pax_global_header00006660000000000000000000000064130414103450014505gustar00rootroot0000000000000052 comment=520698fb248782282916918ffbd4c081f54754a1 libsrtp-520698fb248782282916918ffbd4c081f54754a1/000077500000000000000000000000001304141034500175535ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/.gitignore000066400000000000000000000011511304141034500215410ustar00rootroot00000000000000# Misc crap *~ old old? *.pc # Object files *.o # Libraries *.lib *.a # Shared objects (inc. Windows DLLs) *.dll *.so *.so.* *.dylib # Executables *.exe *.out *.app # srtp things Debug Makefile Root autom4te.cache config.log config.status crypto/include/config.h crypto/test/aes_calc crypto/test/cipher_driver crypto/test/datatypes_driver crypto/test/env crypto/test/kernel_driver crypto/test/rand_gen crypto/test/sha1_driver crypto/test/stat_driver crypto/test/rand_gen_soak tables/aes_tables test/dtls_srtp_driver test/rdbx_driver test/replay_driver test/roc_driver test/rtp_decoder test/rtpw test/srtp_driver libsrtp-520698fb248782282916918ffbd4c081f54754a1/.travis.yml000066400000000000000000000004051304141034500216630ustar00rootroot00000000000000sudo: false language: c osx_image: xcode8.2 compiler: - clang - gcc os: - linux - osx script: - ./configure && make && make runtest - if [ $TRAVIS_OS_NAME != osx ]; then make clean; ./configure --enable-openssl && make && make runtest; fi libsrtp-520698fb248782282916918ffbd4c081f54754a1/CHANGES000066400000000000000000000224641304141034500205560ustar00rootroot00000000000000Changelog 1.5.2 Autoconf checks for libz and libdl for buildroot support. Pull request 96 - Include config.h to get inline on Windows. Pull request 93 - Don't include AES-192 when compiling against BoringSSL. 1.5.1 Pull request 95 - Additional header check from Chromium Pull request 94 - Add missing copyright headers. Pull request 90 - Fix out-of-source tree builds. Pull request 89 - Introduce little endian RISC support Pull request 86 - Add support for cross-compiling the shared library for Windows and OS X Pull request 85 - Add -f option to rtp_decoder Pull request 84 - Avoid problems due to unsafe macros Pull request 82 - Align the AES ICM nonce Pull request 80 - Take advantage of base64 conversion in testapps Pull request 75 - Cleanup: miscellaneous cleanup of initial OpenSSL AES support Pull request 74 - Allow testing with pcap file or capture - Issue #45 Other trivial fixes are included as well. Please see github for details. 1.5.0 Add support for using OpenSSL crypto using the --enable-openssl option. Add support for AES-GCM crypto suites. Add support for pkg_config. Add user data API to allow user to associate additional data with a SRTP context. This release also includes a variety of bug fixes, which can be viewed at: https://github.com/cisco/libsrtp/commits/master Note: The change log was not maintained between versions 1.3.20 and 1.4.5. 1.3.20 Lots of changes. Thanks to Jeff Chan for catching a memory leak and helping track down the endian issues with the SSRCs. 1.3.8 This is an interim release. Several little-endian bugs were identified and fixed; this means that we can use intel/linux for development again. Cleaned up sha1 and hmac code significantly, got rid of some excess functions and properly documented the fuctions in the .h files. Eliminated some vestigial files. There is a SIGBUS error in the AES encrypt function on sparc (observed on both solaris and openbsd) with gcc 2.95. Was unable to find bad pointer anywhere, so I'm wondering if it isn't a compiler problem (there's a known problem whose profile it fits). It doesn't appear on any other platform, even in the cipher_driver stress tests. Planned changes Change interface to nonces (xtd_seq_num_t) so that it uses network byte ordering, and is consistent with other arguments. 1.3.6 Changed /dev/random (in configure.in and crypto/rng/rand_source.c) to /dev/urandom; the latter is non-blocking on all known platforms (which corrects some programs that seem to hang) and is actually present on Open BSD (unlike /dev/random, which only works in the presence of hardware supported random number generation). Added machine/types.h case in include/integers.h. 1.3.5 Removing srtp_t::template and stream_clone(). Adding a new policy structure, which will reflect a complete SRTP policy (including SRTCP). This version is *incomplete* and will undergo more changes. It is provided only as a basis for discussion. 1.3.4 Removed tmmh.c and tmmh.h, which implemented version one of TMMH. Changed srtp_get_trailer_length() to act on streams rather than sessions, and documented the macro SRTP_MAX_TRAILER_LEN, which should usually be used rather than that function. Removed 'salt' from cipher input. Changed rdbx to use err.h error codes. Changed malloc() and free() to xalloc() and xfree; these functions are defined in crypto/kernel/alloc.c and declared in include/alloc.h. Added 'output' functions to cipher, in addition to 'encrypt' functions. It is no longer necessary to zeroize a buffer before encrypting in order to get keystream. Changed octet_string_hex_string() so that "times two" isn't needed in its input. Added crypto_kernel_init() prior to command-line parsing, so that kernel can be passed command-line arguments, such as "-d debug_module". This was done to for the applications test/srtp-driver, test/kernel-driver, and test/ust-driver. Improved srtp_init_aes_128_prf - wrote key derivation function (srtp_kdf_t). Add the tag_len as an argument to the auth_compute() function, but not the corresponding macro. This change allows the tag length for a given auth func to be set to different values at initialization time. Previously, the structure auth_t contained the output_length, but that value was inaccessible from hmac_compute() and other functions. Re-named files from a-b.c to a_b.c. in order to help portability. Re-named rijndael to aes (or aes_128 as appropriate). 1.2.1 Changes so that 1.2.0 compiles on cygwin-win2k. Added better error reporting system. If syslog is present on the OS, then it is used. 1.2.0 Many improvements and additions, and a fex fixes Fixed endian issues in RTP header construction in the function rtp_sendto() in srtp/rtp.c. Implemented RIJNDAEL decryption operation, adding the functions rijndael_decrypt() and rijndael_expand_decryption_key(). Also re-named rijndael_expand_key() to rijndael_expand_encryption_key() for consistency. Implemented random number source using /dev/random, in the files crypto/rng/rand_source.c and include/rand_source.h. Added index check to SEAL cipher (only values less than 2^32 are allowed) Added test case for null_auth authentication function. Added a timing test which tests the effect of CPU cache thrash on cipher throughput. The test is done by the function cipher_test_throughput_array(); the function cipher_array_alloc_init() creates an array of ciphers for use in this test. This test can be accessed by using the -a flag to the application cipher-driver in the test subdirectory. Added argument processing to ust-driver.c, and added that app to the 'runtest' target in Makefile.in. A minor auth_t API change: last argument of auth_init() eliminated. 1.0.6 A small but important fix Fixed srtp_init_aes_128_prf() by adding octet_string_set_to_zero() after buffer allocation. Eliminated references to no-longer-existing variables in debugging code in srtp/srtp.c. This fixes the compilation failure that occured when using PRINT_DEBUG in that file. Corrected spelling of Richard Priestley's name in credits. Sorry Richard! 1.0.5 Many little fixes Fixed octet_string_set_to_zero(), which was writing one more zero octet than it should. This bug caused srtp_protect() and srtp_unprotect() to overwrite the byte that followed the srtp packet. Changed sizeof(uint32_t) to srtp_get_trailer_length() in srtp-driver.c. This is just defensive coding. Added NULL check to malloc in srtp_alloc(). 1.0.4 Many minor fixes and two big ones (thanks for the bug reports!) Removed 'ssrc' from the srtp_init_aes_128_prf() function argument list. This is so that applications which do not a priori know the ssrc which they will be receiving can still use libsrtp. Now the SSRC value is gleaned from the rtp header and exored into the counter mode offset in the srtp_protect() and srtp_unprotect() functions, if that cipher is used. This change cascaed through many other functions, including srtp_init_from_hex(), srtp_sender_init() and srtp_receiver_init() in rtp.c, and also changing the CLI to test/rtpw. In the future, another function call will be added to the library that enables multiple ssrc/key pairs to be installed into the same srtp session, so that libsrtp works with multiple srtp senders. For now, this functionality is lacking. Removed the GDOI interface to the rtpw demo program. This will be added again at a later date, after the SRTP and GDOI distributions stabilize. For now, I've left in the GDOI #defines and autoconf definitions so that they'll be in place when needed. Updated tmmhv2_compute() so that it didn't assume any particular alginment of the output tag. Changed bit field variables in srtp.h to unsigned char from unsigned int in order to avoid a potential endianness issue. Fixed rdbx_estimate_index() to handle all input cases. This solves the now notorious "abaft" bug in the rtpw demo app on linux/intel, in which spurious replay protection failures happen after that word is received. Added ntohs(hdr->seq) to srtp_protect and srtp_unprotect, removed from rijndael_icm_set_segment(). Added error checking and handling to srtp_sender_init() and srtp_receiver_init(). Changed srtp_alloc() so that it does what you'd expect: allocate an srtp_ctx_t structure. This hides the library internals. 1.0.1 Many minor fixes Added cipher_driver_buffer_test(...) to test/cipher-driver.c. This function checks that the byte-buffering functions used by a cipher are correct. Fixed SunOS/Solaris build problems: added HAVE_SYS_INT_TYPES_H and changed index_t to xtd_seq_num_t (see include/rdbx.h). Fixed SEAL3.0 output byte buffering, added byte-buffering test to cipher/cipher-driver.c. Fixed roc-driver so that the non-sequential insertion test automatically recovers from bad estimates. This was required to prevent spurious failures. Made rdbx_estimate_index(...) function smarter, so that initial RTP sequence numbers greater than 32,768 don't cause it to estimate the rollover counter of 0xffffffff. 1.0.0 Initial release libsrtp-520698fb248782282916918ffbd4c081f54754a1/LICENSE000066400000000000000000000031161304141034500205610ustar00rootroot00000000000000/* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/Makefile.in000066400000000000000000000221031304141034500216160ustar00rootroot00000000000000# Makefile for secure rtp # # David A. McGrew # Cisco Systems, Inc. # targets: # # runtest runs test applications # test builds test applications # libsrtp2.a static library implementing srtp # libsrtp2.so shared library implementing srtp # clean removes objects, libs, and executables # distribution cleans and builds a .tgz # tags builds etags file from all .c and .h files USE_OPENSSL = @USE_OPENSSL@ HAVE_PCAP = @HAVE_PCAP@ HAVE_PKG_CONFIG = @HAVE_PKG_CONFIG@ .PHONY: all shared_library test all: test runtest: test @echo "running libsrtp2 test applications..." crypto/test/cipher_driver$(EXE) -v >/dev/null crypto/test/kernel_driver$(EXE) -v >/dev/null test/rdbx_driver$(EXE) -v >/dev/null test/srtp_driver$(EXE) -v >/dev/null test/roc_driver$(EXE) -v >/dev/null test/replay_driver$(EXE) -v >/dev/null test/dtls_srtp_driver$(EXE) >/dev/null cd test; $(abspath $(srcdir))/test/rtpw_test.sh >/dev/null ifeq (1, $(USE_OPENSSL)) cd test; $(abspath $(srcdir))/test/rtpw_test_gcm.sh >/dev/null endif @echo "libsrtp2 test applications passed." $(MAKE) -C crypto runtest # makefile variables CC = @CC@ INCDIR = -Icrypto/include -I$(srcdir)/include -I$(srcdir)/crypto/include DEFS = @DEFS@ CPPFLAGS= -fPIC @CPPFLAGS@ CFLAGS = @CFLAGS@ LIBS = @LIBS@ LDFLAGS = -L. @LDFLAGS@ COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS) SRTPLIB = -lsrtp2 AR = @AR@ RANLIB = @RANLIB@ INSTALL = @INSTALL@ # EXE defines the suffix on executables - it's .exe for Windows, and # null on linux, bsd, and OS X and other OSes. EXE = @EXE@ HMAC_OBJS = @HMAC_OBJS@ AES_ICM_OBJS = @AES_ICM_OBJS@ srcdir = @srcdir@ top_srcdir = @top_srcdir@ top_builddir = @top_builddir@ VPATH = @srcdir@ prefix = @prefix@ exec_prefix = @exec_prefix@ includedir = @includedir@ libdir = @libdir@ bindir = @bindir@ ifeq (1, $(HAVE_PKG_CONFIG)) pkgconfigdir = $(libdir)/pkgconfig pkgconfig_DATA = libsrtp2.pc endif SHAREDLIBVERSION = 1 ifeq (linux,$(findstring linux,@host@)) SHAREDLIB_DIR = $(libdir) SHAREDLIB_LDFLAGS = -shared -Wl,-soname,$@ SHAREDLIBSUFFIXNOVER = so SHAREDLIBSUFFIX = $(SHAREDLIBSUFFIXNOVER).$(SHAREDLIBVERSION) else ifeq (mingw,$(findstring mingw,@host@)) SHAREDLIB_DIR = $(bindir) SHAREDLIB_LDFLAGS = -shared -Wl,--out-implib,libsrtp2.dll.a SHAREDLIBVERSION = SHAREDLIBSUFFIXNOVER = dll SHAREDLIBSUFFIX = $(SHAREDLIBSUFFIXNOVER) else ifeq (darwin,$(findstring darwin,@host@)) SHAREDLIB_DIR = $(libdir) SHAREDLIB_LDFLAGS = -dynamiclib -twolevel_namespace -undefined dynamic_lookup \ -fno-common -headerpad_max_install_names -install_name $(libdir)/$@ SHAREDLIBSUFFIXNOVER = dylib SHAREDLIBSUFFIX = $(SHAREDLIBVERSION).$(SHAREDLIBSUFFIXNOVER) endif # implicit rules for object files and test apps %.o: %.c $(COMPILE) -c $< -o $@ %$(EXE): %.c $(COMPILE) $(LDFLAGS) $< -o $@ $(SRTPLIB) $(LIBS) ciphers = crypto/cipher/cipher.o crypto/cipher/null_cipher.o \ $(AES_ICM_OBJS) hashes = crypto/hash/null_auth.o crypto/hash/auth.o \ $(HMAC_OBJS) replay = crypto/replay/rdb.o crypto/replay/rdbx.o \ crypto/replay/ut_sim.o math = crypto/math/datatypes.o crypto/math/stat.o ust = crypto/ust/ust.o err = crypto/kernel/err.o kernel = crypto/kernel/crypto_kernel.o crypto/kernel/alloc.o \ crypto/kernel/key.o $(err) # $(ust) cryptobj = $(ciphers) $(hashes) $(math) $(kernel) $(replay) # libsrtp2.a (implements srtp processing) srtpobj = srtp/srtp.o srtp/ekt.o libsrtp2.a: $(srtpobj) $(cryptobj) $(gdoi) $(AR) cr libsrtp2.a $^ $(RANLIB) libsrtp2.a libsrtp2.$(SHAREDLIBSUFFIX): $(srtpobj) $(cryptobj) $(gdoi) $(CC) -shared -o $@ $(SHAREDLIB_LDFLAGS) \ $^ $(LDFLAGS) $(LIBS) if [ -n "$(SHAREDLIBVERSION)" ]; then \ ln -sfn $@ libsrtp2.$(SHAREDLIBSUFFIXNOVER); \ fi shared_library: libsrtp2.$(SHAREDLIBSUFFIX) libsrtp2.so: $(srtpobj) $(cryptobj) $(CC) -shared -Wl,-soname,libsrtp2.so \ -o libsrtp2.so $^ $(LDFLAGS) # test applications ifneq (1, $(USE_OPENSSL)) AES_CALC = crypto/test/aes_calc$(EXE) endif crypto_testapp = $(AES_CALC) crypto/test/cipher_driver$(EXE) \ crypto/test/datatypes_driver$(EXE) crypto/test/kernel_driver$(EXE) \ crypto/test/sha1_driver$(EXE) \ crypto/test/stat_driver$(EXE) testapp = $(crypto_testapp) test/srtp_driver$(EXE) test/replay_driver$(EXE) \ test/roc_driver$(EXE) test/rdbx_driver$(EXE) test/rtpw$(EXE) \ test/dtls_srtp_driver$(EXE) ifeq (1, $(HAVE_PCAP)) testapp += test/rtp_decoder$(EXE) endif $(testapp): libsrtp2.a test/rtpw$(EXE): test/rtpw.c test/rtp.c test/util.c test/getopt_s.c \ crypto/math/datatypes.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) ifeq (1, $(HAVE_PCAP)) test/rtp_decoder$(EXE): test/rtp_decoder.c test/rtp.c test/util.c test/getopt_s.c \ crypto/math/datatypes.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) endif crypto/test/aes_calc$(EXE): crypto/test/aes_calc.c test/util.c $(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) crypto/test/datatypes_driver$(EXE): crypto/test/datatypes_driver.c test/util.c $(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) crypto/test/sha1_driver$(EXE): crypto/test/sha1_driver.c test/util.c $(COMPILE) -I$(srcdir)/test $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) test/srtp_driver$(EXE): test/srtp_driver.c test/util.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) test/rdbx_driver$(EXE): test/rdbx_driver.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) test/dtls_srtp_driver$(EXE): test/dtls_srtp_driver.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) crypto/test/cipher_driver$(EXE): crypto/test/cipher_driver.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) crypto/test/kernel_driver$(EXE): crypto/test/kernel_driver.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) crypto/test/rand_gen$(EXE): crypto/test/rand_gen.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) crypto/test/rand_gen_soak$(EXE): crypto/test/rand_gen_soak.c test/getopt_s.c $(COMPILE) $(LDFLAGS) -o $@ $^ $(LIBS) $(SRTPLIB) test: $(testapp) @echo "Build done. Please run '$(MAKE) runtest' to run self tests." memtest: test/srtp_driver @test/srtp_driver -v -d "alloc" > tmp @grep freed tmp | wc -l > freed @grep allocated tmp | wc -l > allocated @echo "checking for memory leaks (only works with --enable-stdout)" cmp -s allocated freed @echo "passed (same number of alloc() and dealloc() calls found)" @rm freed allocated tmp # the target 'plot' runs the timing test (test/srtp_driver -t) then # uses gnuplot to produce plots of the results - see the script file # 'timing' plot: test/srtp_driver test/srtp_driver -t > timing.dat # bookkeeping: tags, clean, and distribution tags: etags */*.[ch] */*/*.[ch] # documentation - the target libsrtpdoc builds a PDF file documenting # libsrtp2 libsrtp2doc: $(MAKE) -C doc .PHONY: clean superclean distclean install install: $(INSTALL) -d $(DESTDIR)$(includedir)/srtp2 $(INSTALL) -d $(DESTDIR)$(libdir) cp $(srcdir)/include/srtp.h $(DESTDIR)$(includedir)/srtp2 cp $(srcdir)/include/ekt.h $(DESTDIR)$(includedir)/srtp2 cp $(srcdir)/include/rtp.h $(DESTDIR)$(includedir)/srtp2 cp $(srcdir)/crypto/include/cipher.h $(DESTDIR)$(includedir)/srtp2 cp $(srcdir)/crypto/include/auth.h $(DESTDIR)$(includedir)/srtp2 cp $(srcdir)/crypto/include/crypto_types.h $(DESTDIR)$(includedir)/srtp2 if [ -f libsrtp2.a ]; then cp libsrtp2.a $(DESTDIR)$(libdir)/; fi if [ -f libsrtp2.dll.a ]; then cp libsrtp2.dll.a $(DESTDIR)$(libdir)/; fi if [ -f libsrtp2.$(SHAREDLIBSUFFIX) ]; then \ $(INSTALL) -d $(DESTDIR)$(SHAREDLIB_DIR); \ cp libsrtp2.$(SHAREDLIBSUFFIX) $(DESTDIR)$(SHAREDLIB_DIR)/; \ cp libsrtp2.$(SHAREDLIBSUFFIXNOVER) $(DESTDIR)$(SHAREDLIB_DIR)/; \ if [ -n "$(SHAREDLIBVERSION)" ]; then \ ln -sfn libsrtp2.$(SHAREDLIBSUFFIX) $(DESTDIR)$(SHAREDLIB_DIR)/libsrtp2.$(SHAREDLIBSUFFIXNOVER); \ fi; \ fi if [ "$(pkgconfig_DATA)" != "" ]; then \ $(INSTALL) -d $(DESTDIR)$(pkgconfigdir); \ cp $(top_builddir)/$(pkgconfig_DATA) $(DESTDIR)$(pkgconfigdir)/; \ fi uninstall: rm -f $(DESTDIR)$(includedir)/srtp2/*.h rm -f $(DESTDIR)$(libdir)/libsrtp2.* -rmdir $(DESTDIR)$(includedir)/srtp2 if [ "$(pkgconfig_DATA)" != "" ]; then \ rm -f $(DESTDIR)$(pkgconfigdir)/$(pkgconfig_DATA); \ fi clean: rm -rf $(cryptobj) $(srtpobj) TAGS \ libsrtp2.a libsrtp2.so libsrtp2.dll.a core *.core test/core for a in * */* */*/*; do \ if [ -f "$$a~" ] ; then rm -f $$a~; fi; \ done; for a in $(testapp); do rm -rf $$a$(EXE); done rm -rf *.pict *.jpg *.dat rm -rf freed allocated tmp $(MAKE) -C doc clean superclean: clean rm -rf crypto/include/config.h config.log config.cache config.status \ Makefile crypto/Makefile doc/Makefile \ .gdb_history test/.gdb_history .DS_Store rm -rf autom4te.cache distclean: superclean distname = libsrtp-$(shell cat VERSION) distribution: runtest superclean if ! [ -f VERSION ]; then exit 1; fi if [ -f ../$(distname).tgz ]; then \ mv ../$(distname).tgz ../$(distname).tgz.bak; \ fi cd ..; tar cvzf $(distname).tgz libsrtp # EOF libsrtp-520698fb248782282916918ffbd4c081f54754a1/README000066400000000000000000000155561304141034500204470ustar00rootroot00000000000000Secure RTP (SRTP) Reference Implementation David A. McGrew Cisco Systems, Inc. mcgrew@cisco.com This package provides an implementation of the Secure Real-time Transport Protocol (SRTP), the Universal Security Transform (UST), and a supporting cryptographic kernel. These mechanisms are documented in the Internet Drafts in the doc/ subdirectory. The SRTP API is documented in include/srtp.h, and the library is in libsrtp.a (after compilation). An overview and reference manual is available in doc/libsrtp.pdf. The PDF documentation is more up to date than this file. Installation: ./configure [ options ] # GNU autoconf script make # or gmake if needed; use GNU make The configure script accepts the following options: --help provides a usage summary --disable-debug compile without the runtime debugging system --enable-syslog use syslog for error reporting --disable-stdout use stdout for error reporting --enable-console use /dev/console for error reporting --enable-openssl use OpenSSL crypto primitives --with-openssl-dir Specify location of OpenSSL installation --enable-openssl-kdf use OpenSSL SRTP KDF algorithm --gdoi use GDOI key management (disabled at present) By default, debugging is enabled and stdout is used for debugging. You can use the above configure options to have the debugging output sent to syslog or the system console. Alternatively, you can define ERR_REPORTING_FILE in include/conf.h to be any other file that can be opened by libSRTP, and debug messages will be sent to it. This package has been tested on Mac OS X (powerpc-apple-darwin1.4), Cygwin (i686-pc-cygwin), and Sparc (sparc-sun-solaris2.6). Previous versions have been tested on Linux and OpenBSD on both x86 and sparc platforms. A quick tour of this package: Makefile targets: all, clean, ... README this file CHANGES change log VERSION version number of this package LICENSE legal details (it's a BSD-like license) crypto/ciphers/ ciphers (null, aes_icm, ...) crypto/math/ crypto math routines crypto/hash/ crypto hashing (hmac, tmmhv2, ...) crypto/replay/ replay protection doc/ documentation: rfcs, apis, and suchlike include/ include files for all code in distribution srtp/ secure real-time transport protocol implementation tables/ apps for generating tables (useful in porting) test/ test drivers Applications Several test drivers and a simple and portable srtp application are included in the test/ subdirectory. test driver function tested ------------------------------------------------------------- kernel_driver crypto kernel (ciphers, auth funcs, rng) srtp_driver srtp in-memory tests (does not use the network) rdbx_driver rdbx (extended replay database) roc_driver extended sequence number functions replay_driver replay database (n.b. not used in libsrtp) cipher_driver ciphers auth_driver hash functions The app rtpw is a simple rtp application which reads words from /usr/dict/words and then sends them out one at a time using [s]rtp. Manual srtp keying uses the -k option; automated key management using gdoi will be added later. usage: rtpw [-d ]* [-k|b [-a][-e ][-g]] [-s | -r] dest_ip dest_port or rtpw -l Either the -s (sender) or -r (receiver) option must be chosen. The values dest_ip, dest_port are the ip address and udp port to which the dictionary will be sent, respectively. options: -s (s)rtp sender - causes app to send words -r (s)rtp receive - causes app to receive words -k use srtp master key , where the key is a hexadecimal value (without the leading "0x") -b same as -k but with base64 encoded key -e encrypt/decrypt (for data confidentiality) (requires use of -k option as well) (use 128, 192, or 256 for keysize) -g use AES-GCM mode (must be used with -e) -a message authentication (requires use of -k option as well) -l list debug modules -d turn on debugging for module -i specify input/output file (instead of using dictionary file) In order to get random 30-byte values for use as key/salt pairs , you can use the following bash function to format the output of /dev/random (where that device is available). function randhex() { cat /dev/random | od --read-bytes=32 --width=32 -x | awk '{ print $2 $3 $4 $5 $6 $7 $8 $9 $10 $11 $12 $13 $14 $15 $16 }' } An example of an SRTP session using two rtpw programs follows: set k=c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451 [sh1]$ test/rtpw -s -k $k -e 128 -a 0.0.0.0 9999 Security services: confidentiality message authentication set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451 setting SSRC to 2078917053 sending word: A sending word: a sending word: aa sending word: aal ... [sh2]$ test/rtpw -r -k $k -e 128 -a 0.0.0.0 9999 security services: confidentiality message authentication set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451 19 octets received from SSRC 2078917053 word: A 19 octets received from SSRC 2078917053 word: a 20 octets received from SSRC 2078917053 word: aa 21 octets received from SSRC 2078917053 word: aal ... Implementation Notes * The srtp_protect() function assumes that the buffer holding the rtp packet has enough storage allocated that the authentication tag can be written to the end of that packet. If this assumption is not valid, memory corruption will ensue. * Automated tests for the crypto functions are provided through the cipher_type_self_test() and auth_type_self_test() functions. These functions should be used to test each port of this code to a new platform. * Replay protection is contained in the crypto engine, and tests for it are provided. * This implementation provides calls to initialize, protect, and unprotect RTP packets, and makes as few as possible assumptions about how these functions will be called. For example, the caller is not expected to provide packets in order (though if they're called more than 65k out of sequence, synchronization will be lost). * The sequence number in the rtp packet is used as the low 16 bits of the sender's local packet index. Note that RTP will start its sequence number in a random place, and the SRTP layer just jumps forward to that number at its first invocation. An earlier version of this library used initial sequence numbers that are less than 32,768; this trick is no longer required as the rdbx_estimate_index(...) function has been made smarter. * The replay window is 128 bits in length, and is hard-coded to this value for now. libsrtp-520698fb248782282916918ffbd4c081f54754a1/TODO000066400000000000000000000032471304141034500202510ustar00rootroot00000000000000TODO List 1.4.1 - document which fields are in NBO/HBO, and check for consistency. - move HAVE_U_LONG_LONG inside of datatypes.c, or some other separate file - re-write configure.in to make cross-compilation easier - eliminate GENERIC_AESICM by generalizing the code a bit Older comments - add tests for key_limit_t datatype - move octet_get_weight() from datatypes.c to math.c (any other funcs?) Changes and additions planned Make cipher and auth dealloc() functions zeroize the key-storage areas before calling free(). Eliminate key_len from auth_init() Doucument internal APIs (cipher, auth, srtp_protect, ...) SRTP options not (yet) included in this libaray: - the aes-f8-mode cipher - the Master Key Index - re-keying using the key derivation function (only the initial use of the PRF has been implemented, as it's sufficient for most uses) (OLD) PLANNED CHANGES strip out test/lfsr.c Write new documentation!!! Fix the x86 assembly code in aes.c. Eliminate /* DAM */ - there's one in srtp.c Change debugging so that it can print more than one line. Or perhaps just change it so that a single check of the debug-enabled flag is needed. Improve interface between cipher and rdbx - perhaps generalize rdbx into 'nonce' datatype. Make rijndael_icm accept variable sized keys. Add rdbx functions that allow different-sized explicit sequence numbers to be used. Write uniform byte-buffering code for PRFs, preferably as macros. Consider eliminating low-level alloc functions in favor of len() functions, so that there need not be multiple allocations within a particular alloc() function. libsrtp-520698fb248782282916918ffbd4c081f54754a1/VERSION000066400000000000000000000000121304141034500206140ustar00rootroot000000000000002.1.0-pre libsrtp-520698fb248782282916918ffbd4c081f54754a1/config.guess000077500000000000000000001253651304141034500221070ustar00rootroot00000000000000#! /bin/sh # Attempt to guess a canonical system name. # Copyright 1992-2016 Free Software Foundation, Inc. timestamp='2016-05-15' # This file is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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Hard to guess exactly what SunOS6 will be like, but # it's likely to be more like Solaris than SunOS4. echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; sun4*:SunOS:*:*) case "`/usr/bin/arch -k`" in Series*|S4*) UNAME_RELEASE=`uname -v` ;; esac # Japanese Language versions have a version number like `4.1.3-JL'. echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'` exit ;; sun3*:SunOS:*:*) echo m68k-sun-sunos${UNAME_RELEASE} exit ;; sun*:*:4.2BSD:*) UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` test "x${UNAME_RELEASE}" = x && UNAME_RELEASE=3 case "`/bin/arch`" in sun3) echo m68k-sun-sunos${UNAME_RELEASE} ;; sun4) echo sparc-sun-sunos${UNAME_RELEASE} ;; esac exit ;; aushp:SunOS:*:*) echo sparc-auspex-sunos${UNAME_RELEASE} exit ;; # The situation for MiNT is a little confusing. The machine name # can be virtually everything (everything which is not # "atarist" or "atariste" at least should have a processor # > m68000). The system name ranges from "MiNT" over "FreeMiNT" # to the lowercase version "mint" (or "freemint"). Finally # the system name "TOS" denotes a system which is actually not # MiNT. But MiNT is downward compatible to TOS, so this should # be no problem. atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) echo m68k-milan-mint${UNAME_RELEASE} exit ;; hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) echo m68k-hades-mint${UNAME_RELEASE} exit ;; *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) echo m68k-unknown-mint${UNAME_RELEASE} exit ;; m68k:machten:*:*) echo m68k-apple-machten${UNAME_RELEASE} exit ;; powerpc:machten:*:*) echo powerpc-apple-machten${UNAME_RELEASE} exit ;; RISC*:Mach:*:*) echo mips-dec-mach_bsd4.3 exit ;; RISC*:ULTRIX:*:*) echo mips-dec-ultrix${UNAME_RELEASE} exit ;; VAX*:ULTRIX*:*:*) echo vax-dec-ultrix${UNAME_RELEASE} exit ;; 2020:CLIX:*:* | 2430:CLIX:*:*) echo clipper-intergraph-clix${UNAME_RELEASE} exit ;; mips:*:*:UMIPS | mips:*:*:RISCos) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #ifdef __cplusplus #include /* for printf() prototype */ int main (int argc, char *argv[]) { #else int main (argc, argv) int argc; char *argv[]; { #endif #if defined (host_mips) && defined (MIPSEB) #if defined (SYSTYPE_SYSV) printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_SVR4) printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); #endif #endif exit (-1); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && SYSTEM_NAME=`$dummy $dummyarg` && { echo "$SYSTEM_NAME"; exit; } echo mips-mips-riscos${UNAME_RELEASE} exit ;; Motorola:PowerMAX_OS:*:*) echo powerpc-motorola-powermax exit ;; Motorola:*:4.3:PL8-*) echo powerpc-harris-powermax exit ;; Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) echo powerpc-harris-powermax exit ;; Night_Hawk:Power_UNIX:*:*) echo powerpc-harris-powerunix exit ;; m88k:CX/UX:7*:*) echo m88k-harris-cxux7 exit ;; m88k:*:4*:R4*) echo m88k-motorola-sysv4 exit ;; m88k:*:3*:R3*) echo m88k-motorola-sysv3 exit ;; AViiON:dgux:*:*) # DG/UX returns AViiON for all architectures UNAME_PROCESSOR=`/usr/bin/uname -p` if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] then if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ [ ${TARGET_BINARY_INTERFACE}x = x ] then echo m88k-dg-dgux${UNAME_RELEASE} else echo m88k-dg-dguxbcs${UNAME_RELEASE} fi else echo i586-dg-dgux${UNAME_RELEASE} fi exit ;; M88*:DolphinOS:*:*) # DolphinOS (SVR3) echo m88k-dolphin-sysv3 exit ;; M88*:*:R3*:*) # Delta 88k system running SVR3 echo m88k-motorola-sysv3 exit ;; XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) echo m88k-tektronix-sysv3 exit ;; Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) echo m68k-tektronix-bsd exit ;; *:IRIX*:*:*) echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` exit ;; ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' i*86:AIX:*:*) echo i386-ibm-aix exit ;; ia64:AIX:*:*) if [ -x /usr/bin/oslevel ] ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} exit ;; *:AIX:2:3) if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include main() { if (!__power_pc()) exit(1); puts("powerpc-ibm-aix3.2.5"); exit(0); } EOF if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` then echo "$SYSTEM_NAME" else echo rs6000-ibm-aix3.2.5 fi elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then echo rs6000-ibm-aix3.2.4 else echo rs6000-ibm-aix3.2 fi exit ;; *:AIX:*:[4567]) IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then IBM_ARCH=rs6000 else IBM_ARCH=powerpc fi if [ -x /usr/bin/lslpp ] ; then IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${IBM_ARCH}-ibm-aix${IBM_REV} exit ;; *:AIX:*:*) echo rs6000-ibm-aix exit ;; ibmrt:4.4BSD:*|romp-ibm:BSD:*) echo romp-ibm-bsd4.4 exit ;; ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to exit ;; # report: romp-ibm BSD 4.3 *:BOSX:*:*) echo rs6000-bull-bosx exit ;; DPX/2?00:B.O.S.:*:*) echo m68k-bull-sysv3 exit ;; 9000/[34]??:4.3bsd:1.*:*) echo m68k-hp-bsd exit ;; hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) echo m68k-hp-bsd4.4 exit ;; 9000/[34678]??:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` case "${UNAME_MACHINE}" in 9000/31? ) HP_ARCH=m68000 ;; 9000/[34]?? ) HP_ARCH=m68k ;; 9000/[678][0-9][0-9]) if [ -x /usr/bin/getconf ]; then sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` case "${sc_cpu_version}" in 523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0 528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1 532) # CPU_PA_RISC2_0 case "${sc_kernel_bits}" in 32) HP_ARCH=hppa2.0n ;; 64) HP_ARCH=hppa2.0w ;; '') HP_ARCH=hppa2.0 ;; # HP-UX 10.20 esac ;; esac fi if [ "${HP_ARCH}" = "" ]; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #define _HPUX_SOURCE #include #include int main () { #if defined(_SC_KERNEL_BITS) long bits = sysconf(_SC_KERNEL_BITS); #endif long cpu = sysconf (_SC_CPU_VERSION); switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0"); break; case CPU_PA_RISC1_1: puts ("hppa1.1"); break; case CPU_PA_RISC2_0: #if defined(_SC_KERNEL_BITS) switch (bits) { case 64: puts ("hppa2.0w"); break; case 32: puts ("hppa2.0n"); break; default: puts ("hppa2.0"); break; } break; #else /* !defined(_SC_KERNEL_BITS) */ puts ("hppa2.0"); break; #endif default: puts ("hppa1.0"); break; } exit (0); } EOF (CCOPTS="" $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` test -z "$HP_ARCH" && HP_ARCH=hppa fi ;; esac if [ ${HP_ARCH} = hppa2.0w ] then eval $set_cc_for_build # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler # generating 64-bit code. GNU and HP use different nomenclature: # # $ CC_FOR_BUILD=cc ./config.guess # => hppa2.0w-hp-hpux11.23 # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess # => hppa64-hp-hpux11.23 if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | grep -q __LP64__ then HP_ARCH=hppa2.0w else HP_ARCH=hppa64 fi fi echo ${HP_ARCH}-hp-hpux${HPUX_REV} exit ;; ia64:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` echo ia64-hp-hpux${HPUX_REV} exit ;; 3050*:HI-UX:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include int main () { long cpu = sysconf (_SC_CPU_VERSION); /* The order matters, because CPU_IS_HP_MC68K erroneously returns true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct results, however. */ if (CPU_IS_PA_RISC (cpu)) { switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; default: puts ("hppa-hitachi-hiuxwe2"); break; } } else if (CPU_IS_HP_MC68K (cpu)) puts ("m68k-hitachi-hiuxwe2"); else puts ("unknown-hitachi-hiuxwe2"); exit (0); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && { echo "$SYSTEM_NAME"; exit; } echo unknown-hitachi-hiuxwe2 exit ;; 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) echo hppa1.1-hp-bsd exit ;; 9000/8??:4.3bsd:*:*) echo hppa1.0-hp-bsd exit ;; *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) echo hppa1.0-hp-mpeix exit ;; hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) echo hppa1.1-hp-osf exit ;; hp8??:OSF1:*:*) echo hppa1.0-hp-osf exit ;; i*86:OSF1:*:*) if [ -x /usr/sbin/sysversion ] ; then echo ${UNAME_MACHINE}-unknown-osf1mk else echo ${UNAME_MACHINE}-unknown-osf1 fi exit ;; parisc*:Lites*:*:*) echo hppa1.1-hp-lites exit ;; C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) echo c1-convex-bsd exit ;; C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) echo c34-convex-bsd exit ;; C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) echo c38-convex-bsd exit ;; C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) echo c4-convex-bsd exit ;; CRAY*Y-MP:*:*:*) echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*[A-Z]90:*:*:*) echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ -e 's/\.[^.]*$/.X/' exit ;; CRAY*TS:*:*:*) echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*T3E:*:*:*) echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*SV1:*:*:*) echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; *:UNICOS/mp:*:*) echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; 5000:UNIX_System_V:4.*:*) FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'` echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} exit ;; sparc*:BSD/OS:*:*) echo sparc-unknown-bsdi${UNAME_RELEASE} exit ;; *:BSD/OS:*:*) echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} exit ;; *:FreeBSD:*:*) UNAME_PROCESSOR=`/usr/bin/uname -p` case ${UNAME_PROCESSOR} in amd64) echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; *) echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; esac exit ;; i*:CYGWIN*:*) echo ${UNAME_MACHINE}-pc-cygwin exit ;; *:MINGW64*:*) echo ${UNAME_MACHINE}-pc-mingw64 exit ;; *:MINGW*:*) echo ${UNAME_MACHINE}-pc-mingw32 exit ;; *:MSYS*:*) echo ${UNAME_MACHINE}-pc-msys exit ;; i*:windows32*:*) # uname -m includes "-pc" on this system. echo ${UNAME_MACHINE}-mingw32 exit ;; i*:PW*:*) echo ${UNAME_MACHINE}-pc-pw32 exit ;; *:Interix*:*) case ${UNAME_MACHINE} in x86) echo i586-pc-interix${UNAME_RELEASE} exit ;; authenticamd | genuineintel | EM64T) echo x86_64-unknown-interix${UNAME_RELEASE} exit ;; IA64) echo ia64-unknown-interix${UNAME_RELEASE} exit ;; esac ;; [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) echo i${UNAME_MACHINE}-pc-mks exit ;; 8664:Windows_NT:*) echo x86_64-pc-mks exit ;; i*:Windows_NT*:* | Pentium*:Windows_NT*:*) # How do we know it's Interix rather than the generic POSIX subsystem? # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we # UNAME_MACHINE based on the output of uname instead of i386? echo i586-pc-interix exit ;; i*:UWIN*:*) echo ${UNAME_MACHINE}-pc-uwin exit ;; amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) echo x86_64-unknown-cygwin exit ;; p*:CYGWIN*:*) echo powerpcle-unknown-cygwin exit ;; prep*:SunOS:5.*:*) echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; *:GNU:*:*) # the GNU system echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-${LIBC}`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` exit ;; *:GNU/*:*:*) # other systems with GNU libc and userland echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC} exit ;; i*86:Minix:*:*) echo ${UNAME_MACHINE}-pc-minix exit ;; aarch64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; aarch64_be:Linux:*:*) UNAME_MACHINE=aarch64_be echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; alpha:Linux:*:*) case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in EV5) UNAME_MACHINE=alphaev5 ;; EV56) UNAME_MACHINE=alphaev56 ;; PCA56) UNAME_MACHINE=alphapca56 ;; PCA57) UNAME_MACHINE=alphapca56 ;; EV6) UNAME_MACHINE=alphaev6 ;; EV67) UNAME_MACHINE=alphaev67 ;; EV68*) UNAME_MACHINE=alphaev68 ;; esac objdump --private-headers /bin/sh | grep -q ld.so.1 if test "$?" = 0 ; then LIBC=gnulibc1 ; fi echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; arc:Linux:*:* | arceb:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; arm*:Linux:*:*) eval $set_cc_for_build if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_EABI__ then echo ${UNAME_MACHINE}-unknown-linux-${LIBC} else if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabi else echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabihf fi fi exit ;; avr32*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; cris:Linux:*:*) echo ${UNAME_MACHINE}-axis-linux-${LIBC} exit ;; crisv32:Linux:*:*) echo ${UNAME_MACHINE}-axis-linux-${LIBC} exit ;; e2k:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; frv:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; hexagon:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; i*86:Linux:*:*) echo ${UNAME_MACHINE}-pc-linux-${LIBC} exit ;; ia64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; k1om:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; m32r*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; m68*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; mips:Linux:*:* | mips64:Linux:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #undef CPU #undef ${UNAME_MACHINE} #undef ${UNAME_MACHINE}el #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) CPU=${UNAME_MACHINE}el #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) CPU=${UNAME_MACHINE} #else CPU= #endif #endif EOF eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'` test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; } ;; openrisc*:Linux:*:*) echo or1k-unknown-linux-${LIBC} exit ;; or32:Linux:*:* | or1k*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; padre:Linux:*:*) echo sparc-unknown-linux-${LIBC} exit ;; parisc64:Linux:*:* | hppa64:Linux:*:*) echo hppa64-unknown-linux-${LIBC} exit ;; parisc:Linux:*:* | hppa:Linux:*:*) # Look for CPU level case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in PA7*) echo hppa1.1-unknown-linux-${LIBC} ;; PA8*) echo hppa2.0-unknown-linux-${LIBC} ;; *) echo hppa-unknown-linux-${LIBC} ;; esac exit ;; ppc64:Linux:*:*) echo powerpc64-unknown-linux-${LIBC} exit ;; ppc:Linux:*:*) echo powerpc-unknown-linux-${LIBC} exit ;; ppc64le:Linux:*:*) echo powerpc64le-unknown-linux-${LIBC} exit ;; ppcle:Linux:*:*) echo powerpcle-unknown-linux-${LIBC} exit ;; s390:Linux:*:* | s390x:Linux:*:*) echo ${UNAME_MACHINE}-ibm-linux-${LIBC} exit ;; sh64*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; sh*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; sparc:Linux:*:* | sparc64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; tile*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; vax:Linux:*:*) echo ${UNAME_MACHINE}-dec-linux-${LIBC} exit ;; x86_64:Linux:*:*) echo ${UNAME_MACHINE}-pc-linux-${LIBC} exit ;; xtensa*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; i*86:DYNIX/ptx:4*:*) # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. # earlier versions are messed up and put the nodename in both # sysname and nodename. echo i386-sequent-sysv4 exit ;; i*86:UNIX_SV:4.2MP:2.*) # Unixware is an offshoot of SVR4, but it has its own version # number series starting with 2... # I am not positive that other SVR4 systems won't match this, # I just have to hope. -- rms. # Use sysv4.2uw... so that sysv4* matches it. echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} exit ;; i*86:OS/2:*:*) # If we were able to find `uname', then EMX Unix compatibility # is probably installed. echo ${UNAME_MACHINE}-pc-os2-emx exit ;; i*86:XTS-300:*:STOP) echo ${UNAME_MACHINE}-unknown-stop exit ;; i*86:atheos:*:*) echo ${UNAME_MACHINE}-unknown-atheos exit ;; i*86:syllable:*:*) echo ${UNAME_MACHINE}-pc-syllable exit ;; i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) echo i386-unknown-lynxos${UNAME_RELEASE} exit ;; i*86:*DOS:*:*) echo ${UNAME_MACHINE}-pc-msdosdjgpp exit ;; i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} else echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} fi exit ;; i*86:*:5:[678]*) # UnixWare 7.x, OpenUNIX and OpenServer 6. case `/bin/uname -X | grep "^Machine"` in *486*) UNAME_MACHINE=i486 ;; *Pentium) UNAME_MACHINE=i586 ;; *Pent*|*Celeron) UNAME_MACHINE=i686 ;; esac echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} exit ;; i*86:*:3.2:*) if test -f /usr/options/cb.name; then UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ && UNAME_MACHINE=i586 (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ && UNAME_MACHINE=i686 (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ && UNAME_MACHINE=i686 echo ${UNAME_MACHINE}-pc-sco$UNAME_REL else echo ${UNAME_MACHINE}-pc-sysv32 fi exit ;; pc:*:*:*) # Left here for compatibility: # uname -m prints for DJGPP always 'pc', but it prints nothing about # the processor, so we play safe by assuming i586. # Note: whatever this is, it MUST be the same as what config.sub # prints for the "djgpp" host, or else GDB configure will decide that # this is a cross-build. echo i586-pc-msdosdjgpp exit ;; Intel:Mach:3*:*) echo i386-pc-mach3 exit ;; paragon:*:*:*) echo i860-intel-osf1 exit ;; i860:*:4.*:*) # i860-SVR4 if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 else # Add other i860-SVR4 vendors below as they are discovered. echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 fi exit ;; mini*:CTIX:SYS*5:*) # "miniframe" echo m68010-convergent-sysv exit ;; mc68k:UNIX:SYSTEM5:3.51m) echo m68k-convergent-sysv exit ;; M680?0:D-NIX:5.3:*) echo m68k-diab-dnix exit ;; M68*:*:R3V[5678]*:*) test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) OS_REL='' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4; exit; } ;; NCR*:*:4.2:* | MPRAS*:*:4.2:*) OS_REL='.3' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) echo m68k-unknown-lynxos${UNAME_RELEASE} exit ;; mc68030:UNIX_System_V:4.*:*) echo m68k-atari-sysv4 exit ;; TSUNAMI:LynxOS:2.*:*) echo sparc-unknown-lynxos${UNAME_RELEASE} exit ;; rs6000:LynxOS:2.*:*) echo rs6000-unknown-lynxos${UNAME_RELEASE} exit ;; PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) echo powerpc-unknown-lynxos${UNAME_RELEASE} exit ;; SM[BE]S:UNIX_SV:*:*) echo mips-dde-sysv${UNAME_RELEASE} exit ;; RM*:ReliantUNIX-*:*:*) echo mips-sni-sysv4 exit ;; RM*:SINIX-*:*:*) echo mips-sni-sysv4 exit ;; *:SINIX-*:*:*) if uname -p 2>/dev/null >/dev/null ; then UNAME_MACHINE=`(uname -p) 2>/dev/null` echo ${UNAME_MACHINE}-sni-sysv4 else echo ns32k-sni-sysv fi exit ;; PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort # says echo i586-unisys-sysv4 exit ;; *:UNIX_System_V:4*:FTX*) # From Gerald Hewes . # How about differentiating between stratus architectures? -djm echo hppa1.1-stratus-sysv4 exit ;; *:*:*:FTX*) # From seanf@swdc.stratus.com. echo i860-stratus-sysv4 exit ;; i*86:VOS:*:*) # From Paul.Green@stratus.com. echo ${UNAME_MACHINE}-stratus-vos exit ;; *:VOS:*:*) # From Paul.Green@stratus.com. echo hppa1.1-stratus-vos exit ;; mc68*:A/UX:*:*) echo m68k-apple-aux${UNAME_RELEASE} exit ;; news*:NEWS-OS:6*:*) echo mips-sony-newsos6 exit ;; R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) if [ -d /usr/nec ]; then echo mips-nec-sysv${UNAME_RELEASE} else echo mips-unknown-sysv${UNAME_RELEASE} fi exit ;; BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. echo powerpc-be-beos exit ;; BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. echo powerpc-apple-beos exit ;; BePC:BeOS:*:*) # BeOS running on Intel PC compatible. echo i586-pc-beos exit ;; BePC:Haiku:*:*) # Haiku running on Intel PC compatible. echo i586-pc-haiku exit ;; x86_64:Haiku:*:*) echo x86_64-unknown-haiku exit ;; SX-4:SUPER-UX:*:*) echo sx4-nec-superux${UNAME_RELEASE} exit ;; SX-5:SUPER-UX:*:*) echo sx5-nec-superux${UNAME_RELEASE} exit ;; SX-6:SUPER-UX:*:*) echo sx6-nec-superux${UNAME_RELEASE} exit ;; SX-7:SUPER-UX:*:*) echo sx7-nec-superux${UNAME_RELEASE} exit ;; SX-8:SUPER-UX:*:*) echo sx8-nec-superux${UNAME_RELEASE} exit ;; SX-8R:SUPER-UX:*:*) echo sx8r-nec-superux${UNAME_RELEASE} exit ;; SX-ACE:SUPER-UX:*:*) echo sxace-nec-superux${UNAME_RELEASE} exit ;; Power*:Rhapsody:*:*) echo powerpc-apple-rhapsody${UNAME_RELEASE} exit ;; *:Rhapsody:*:*) echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} exit ;; *:Darwin:*:*) UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown eval $set_cc_for_build if test "$UNAME_PROCESSOR" = unknown ; then UNAME_PROCESSOR=powerpc fi if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then if [ "$CC_FOR_BUILD" != no_compiler_found ]; then if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_64BIT_ARCH >/dev/null then case $UNAME_PROCESSOR in i386) UNAME_PROCESSOR=x86_64 ;; powerpc) UNAME_PROCESSOR=powerpc64 ;; esac fi fi elif test "$UNAME_PROCESSOR" = i386 ; then # Avoid executing cc on OS X 10.9, as it ships with a stub # that puts up a graphical alert prompting to install # developer tools. Any system running Mac OS X 10.7 or # later (Darwin 11 and later) is required to have a 64-bit # processor. This is not true of the ARM version of Darwin # that Apple uses in portable devices. UNAME_PROCESSOR=x86_64 fi echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} exit ;; *:procnto*:*:* | *:QNX:[0123456789]*:*) UNAME_PROCESSOR=`uname -p` if test "$UNAME_PROCESSOR" = x86; then UNAME_PROCESSOR=i386 UNAME_MACHINE=pc fi echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} exit ;; *:QNX:*:4*) echo i386-pc-qnx exit ;; NEO-?:NONSTOP_KERNEL:*:*) echo neo-tandem-nsk${UNAME_RELEASE} exit ;; NSE-*:NONSTOP_KERNEL:*:*) echo nse-tandem-nsk${UNAME_RELEASE} exit ;; NSR-?:NONSTOP_KERNEL:*:*) echo nsr-tandem-nsk${UNAME_RELEASE} exit ;; *:NonStop-UX:*:*) echo mips-compaq-nonstopux exit ;; BS2000:POSIX*:*:*) echo bs2000-siemens-sysv exit ;; DS/*:UNIX_System_V:*:*) echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} exit ;; *:Plan9:*:*) # "uname -m" is not consistent, so use $cputype instead. 386 # is converted to i386 for consistency with other x86 # operating systems. if test "$cputype" = 386; then UNAME_MACHINE=i386 else UNAME_MACHINE="$cputype" fi echo ${UNAME_MACHINE}-unknown-plan9 exit ;; *:TOPS-10:*:*) echo pdp10-unknown-tops10 exit ;; *:TENEX:*:*) echo pdp10-unknown-tenex exit ;; KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) echo pdp10-dec-tops20 exit ;; XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) echo pdp10-xkl-tops20 exit ;; *:TOPS-20:*:*) echo pdp10-unknown-tops20 exit ;; *:ITS:*:*) echo pdp10-unknown-its exit ;; SEI:*:*:SEIUX) echo mips-sei-seiux${UNAME_RELEASE} exit ;; *:DragonFly:*:*) echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` exit ;; *:*VMS:*:*) UNAME_MACHINE=`(uname -p) 2>/dev/null` case "${UNAME_MACHINE}" in A*) echo alpha-dec-vms ; exit ;; I*) echo ia64-dec-vms ; exit ;; V*) echo vax-dec-vms ; exit ;; esac ;; *:XENIX:*:SysV) echo i386-pc-xenix exit ;; i*86:skyos:*:*) echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE} | sed -e 's/ .*$//'` exit ;; i*86:rdos:*:*) echo ${UNAME_MACHINE}-pc-rdos exit ;; i*86:AROS:*:*) echo ${UNAME_MACHINE}-pc-aros exit ;; x86_64:VMkernel:*:*) echo ${UNAME_MACHINE}-unknown-esx exit ;; amd64:Isilon\ OneFS:*:*) echo x86_64-unknown-onefs exit ;; esac cat >&2 </dev/null || echo unknown` uname -r = `(uname -r) 2>/dev/null || echo unknown` uname -s = `(uname -s) 2>/dev/null || echo unknown` uname -v = `(uname -v) 2>/dev/null || echo unknown` /usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` /bin/uname -X = `(/bin/uname -X) 2>/dev/null` hostinfo = `(hostinfo) 2>/dev/null` /bin/universe = `(/bin/universe) 2>/dev/null` /usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` /bin/arch = `(/bin/arch) 2>/dev/null` /usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` UNAME_MACHINE = ${UNAME_MACHINE} UNAME_RELEASE = ${UNAME_RELEASE} UNAME_SYSTEM = ${UNAME_SYSTEM} UNAME_VERSION = ${UNAME_VERSION} EOF exit 1 # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: libsrtp-520698fb248782282916918ffbd4c081f54754a1/config.h_win32vc7000066400000000000000000000110541304141034500226340ustar00rootroot00000000000000/* Hacked config.h for Windows XP 32-bit & VC7 */ #ifdef (_MSC_VER >= 1400) # define HAVE_RAND_S 1 #endif /* Define if building for a CISC machine (e.g. Intel). */ #define CPU_CISC 1 /* Define if building for a RISC machine (assume slow byte access). */ #undef CPU_RISC /* Path to random device */ #undef DEV_URANDOM /* Define to compile in dynamic debugging system. */ #undef ENABLE_DEBUGGING /* Report errors to this file. */ #undef ERR_REPORTING_FILE /* Define to use logging to stdout. */ #undef ERR_REPORTING_STDOUT /* Define this to use ISMAcryp code. */ #undef GENERIC_AESICM /* Define to 1 if you have the header file. */ #undef HAVE_ARPA_INET_H /* Define to 1 if you have the header file. */ #undef HAVE_BYTESWAP_H /* Define to 1 if you have the `inet_aton' function. */ #define HAVE_INET_ATON 1 /* Define to 1 if the system has the type `int16_t'. */ #undef HAVE_INT16_T /* Define to 1 if the system has the type `int32_t'. */ #undef HAVE_INT32_T /* Define to 1 if the system has the type `int8_t'. */ #undef HAVE_INT8_T /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H /* Define to 1 if you have the `socket' library (-lsocket). */ #undef HAVE_LIBSOCKET /* Define to 1 if you have the header file. */ #undef HAVE_MACHINE_TYPES_H /* Define to 1 if you have the header file. */ #define HAVE_MEMORY_H 1 /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IN_H /* Define to 1 if you have the `socket' function. */ #define HAVE_SOCKET 1 /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #define HAVE_STDLIB_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRINGS_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRING_H 1 /* Define to 1 if you have the header file. */ #undef HAVE_SYSLOG_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_INT_TYPES_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SOCKET_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_STAT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TYPES_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_UIO_H /* Define to 1 if the system has the type `uint16_t'. */ #undef HAVE_UINT16_T /* Define to 1 if the system has the type `uint32_t'. */ #undef HAVE_UINT32_T /* Define to 1 if the system has the type `uint64_t'. */ #undef HAVE_UINT64_T /* Define to 1 if the system has the type `uint8_t'. */ #undef HAVE_UINT8_T /* Define to 1 if you have the header file. */ #define HAVE_UNISTD_H 1 /* Define to 1 if you have the `usleep' function. */ #define HAVE_USLEEP 1 /* Define to 1 if you have the header file. */ #define HAVE_WINDOWS_H 1 /* Define to 1 if you have the header file. */ #define HAVE_WINSOCK2_H 1 /* Define to use X86 inlined assembly code */ #undef HAVE_X86 /* Define to the address where bug reports for this package should be sent. */ #undef PACKAGE_BUGREPORT /* Define to the full name of this package. */ #undef PACKAGE_NAME /* Define to the full name and version of this package. */ #undef PACKAGE_STRING /* Define to the one symbol short name of this package. */ #undef PACKAGE_TARNAME /* Define to the version of this package. */ #undef PACKAGE_VERSION /* The size of a `unsigned long', as computed by sizeof. */ #define SIZEOF_UNSIGNED_LONG 4 /* The size of a `unsigned long long', as computed by sizeof. */ #define SIZEOF_UNSIGNED_LONG_LONG 8 /* Define to use GDOI. */ #undef SRTP_GDOI /* Define to compile for kernel contexts. */ #undef SRTP_KERNEL /* Define to compile for Linux kernel context. */ #undef SRTP_KERNEL_LINUX /* Define to 1 if you have the ANSI C header files. */ #undef STDC_HEADERS /* Write errors to this file */ #undef USE_ERR_REPORTING_FILE /* Define to use syslog logging. */ #undef USE_SYSLOG /* Define to 1 if your processor stores words with the most significant byte first (like Motorola and SPARC, unlike Intel and VAX). */ #undef WORDS_BIGENDIAN /* Define to empty if `const' does not conform to ANSI C. */ //#undef const /* Define to `__inline__' or `__inline' if that's what the C compiler calls it, or to nothing if 'inline' is not supported under any name. */ //#ifndef __cplusplus //#undef inline //#endif #define inline __inline /* Define to `unsigned' if does not define. */ //#undef size_t libsrtp-520698fb248782282916918ffbd4c081f54754a1/config.hw000066400000000000000000000122521304141034500213620ustar00rootroot00000000000000/* crypto/include/config.h. Generated by configure. */ /* config_in.h. Generated from configure.in by autoheader. */ #if (_MSC_VER >= 1400) # define HAVE_RAND_S 1 # define _CRT_RAND_S #endif /* Define if building for a CISC machine (e.g. Intel). */ #define CPU_CISC 1 /* Define if building for a RISC machine (assume slow byte access). */ /* #undef CPU_RISC */ /* Define to compile in dynamic debugging system. */ #define ENABLE_DEBUGGING 1 /* Report errors to this file. */ /* #undef ERR_REPORTING_FILE */ /* Define to use logging to stdout. */ #define ERR_REPORTING_STDOUT 1 /* Define this to use ISMAcryp code. */ /* #undef GENERIC_AESICM */ /* Define to 1 if you have the header file. */ /* #undef HAVE_ARPA_INET_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_BYTESWAP_H */ /* Define to 1 if you have the `inet_aton' function. */ /* #undef HAVE_INET_ATON */ /* Define to 1 if the system has the type `int16_t'. */ #define HAVE_INT16_T 1 /* Define to 1 if the system has the type `int32_t'. */ #define HAVE_INT32_T 1 /* Define to 1 if the system has the type `int8_t'. */ #define HAVE_INT8_T 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_INTTYPES_H */ /* Define to 1 if you have the `socket' library (-lsocket). */ /* #undef HAVE_LIBSOCKET */ /* Define to 1 if you have the header file. */ /* #undef HAVE_MACHINE_TYPES_H */ /* Define to 1 if you have the header file. */ #define HAVE_MEMORY_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_NETINET_IN_H */ /* Define to 1 if you have the `socket' function. */ /* #undef HAVE_SOCKET */ /* Define to 1 if you have the header file. */ /* #undef HAVE_STDINT_H */ /* Define to 1 if you have the header file. */ #define HAVE_STDLIB_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRINGS_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRING_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_SYSLOG_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_INT_TYPES_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_SOCKET_H */ /* Define to 1 if you have the header file. */ #define HAVE_SYS_STAT_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SYS_TYPES_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_UIO_H */ /* Define to 1 if the system has the type `uint16_t'. */ #define HAVE_UINT16_T 1 /* Define to 1 if the system has the type `uint32_t'. */ #define HAVE_UINT32_T 1 /* Define to 1 if the system has the type `uint64_t'. */ #define HAVE_UINT64_T 1 /* Define to 1 if the system has the type `uint8_t'. */ #define HAVE_UINT8_T 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_UNISTD_H */ /* Define to 1 if you have the `usleep' function. */ /* #undef HAVE_USLEEP */ /* Define to 1 if you have the header file. */ #define HAVE_WINDOWS_H 1 /* Define to 1 if you have the header file. */ #define HAVE_WINSOCK2_H 1 /* Define to use X86 inlined assembly code */ /* #undef HAVE_X86 */ /* Define to the address where bug reports for this package should be sent. */ #define PACKAGE_BUGREPORT "" /* Define to the full name of this package. */ #define PACKAGE_NAME "" /* Define to the full name and version of this package. */ #define PACKAGE_STRING "" /* Define to the one symbol short name of this package. */ #define PACKAGE_TARNAME "" /* Define to the version of this package. */ #define PACKAGE_VERSION "" /* The size of a `unsigned long', as computed by sizeof. */ #define SIZEOF_UNSIGNED_LONG 4 /* The size of a `unsigned long long', as computed by sizeof. */ #define SIZEOF_UNSIGNED_LONG_LONG 8 /* Define to use GDOI. */ /* #undef SRTP_GDOI */ /* Define to compile for kernel contexts. */ /* #undef SRTP_KERNEL */ /* Define to compile for Linux kernel context. */ /* #undef SRTP_KERNEL_LINUX */ /* Define to 1 if you have the ANSI C header files. */ #define STDC_HEADERS 1 /* Write errors to this file */ /* #undef USE_ERR_REPORTING_FILE */ /* Define to use syslog logging. */ /* #undef USE_SYSLOG */ /* Define to 1 if your processor stores words with the most significant byte first (like Motorola and SPARC, unlike Intel and VAX). */ /* #undef WORDS_BIGENDIAN */ /* Define to empty if `const' does not conform to ANSI C. */ /* #undef const */ /* Define 'inline' to nothing, since the MSVC compiler doesn't support it. */ #define inline /* Define to `unsigned' if does not define. */ /* #undef size_t */ #if (_MSC_VER >= 1400) // VC8+ #ifndef _CRT_SECURE_NO_DEPRECATE #define _CRT_SECURE_NO_DEPRECATE #endif #ifndef _CRT_NONSTDC_NO_DEPRECATE #define _CRT_NONSTDC_NO_DEPRECATE #endif #endif // VC8+ #ifndef uint32_t typedef unsigned __int8 uint8_t; typedef unsigned __int16 uint16_t; typedef unsigned __int32 uint32_t; typedef unsigned __int64 uint64_t; typedef __int8 int8_t; typedef __int16 int16_t; typedef __int32 int32_t; typedef __int64 int64_t; #endif #ifdef _MSC_VER #pragma warning(disable:4311) #endif libsrtp-520698fb248782282916918ffbd4c081f54754a1/config.sub000077500000000000000000001065131304141034500215440ustar00rootroot00000000000000#! /bin/sh # Configuration validation subroutine script. # Copyright 1992-2016 Free Software Foundation, Inc. timestamp='2016-05-10' # This file is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, see . # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that # program. This Exception is an additional permission under section 7 # of the GNU General Public License, version 3 ("GPLv3"). # Please send patches to . # # Configuration subroutine to validate and canonicalize a configuration type. # Supply the specified configuration type as an argument. # If it is invalid, we print an error message on stderr and exit with code 1. # Otherwise, we print the canonical config type on stdout and succeed. # You can get the latest version of this script from: # http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub # This file is supposed to be the same for all GNU packages # and recognize all the CPU types, system types and aliases # that are meaningful with *any* GNU software. # Each package is responsible for reporting which valid configurations # it does not support. The user should be able to distinguish # a failure to support a valid configuration from a meaningless # configuration. # The goal of this file is to map all the various variations of a given # machine specification into a single specification in the form: # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM # or in some cases, the newer four-part form: # CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM # It is wrong to echo any other type of specification. me=`echo "$0" | sed -e 's,.*/,,'` usage="\ Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS Canonicalize a configuration name. Operation modes: -h, --help print this help, then exit -t, --time-stamp print date of last modification, then exit -v, --version print version number, then exit Report bugs and patches to ." version="\ GNU config.sub ($timestamp) Copyright 1992-2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." help=" Try \`$me --help' for more information." # Parse command line while test $# -gt 0 ; do case $1 in --time-stamp | --time* | -t ) echo "$timestamp" ; exit ;; --version | -v ) echo "$version" ; exit ;; --help | --h* | -h ) echo "$usage"; exit ;; -- ) # Stop option processing shift; break ;; - ) # Use stdin as input. break ;; -* ) echo "$me: invalid option $1$help" exit 1 ;; *local*) # First pass through any local machine types. echo $1 exit ;; * ) break ;; esac done case $# in 0) echo "$me: missing argument$help" >&2 exit 1;; 1) ;; *) echo "$me: too many arguments$help" >&2 exit 1;; esac # Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). # Here we must recognize all the valid KERNEL-OS combinations. maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` case $maybe_os in nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \ linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \ knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \ kopensolaris*-gnu* | \ storm-chaos* | os2-emx* | rtmk-nova*) os=-$maybe_os basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` ;; android-linux) os=-linux-android basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown ;; *) basic_machine=`echo $1 | sed 's/-[^-]*$//'` if [ $basic_machine != $1 ] then os=`echo $1 | sed 's/.*-/-/'` else os=; fi ;; esac ### Let's recognize common machines as not being operating systems so ### that things like config.sub decstation-3100 work. We also ### recognize some manufacturers as not being operating systems, so we ### can provide default operating systems below. case $os in -sun*os*) # Prevent following clause from handling this invalid input. ;; -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \ -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \ -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \ -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\ -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \ -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \ -apple | -axis | -knuth | -cray | -microblaze*) os= basic_machine=$1 ;; -bluegene*) os=-cnk ;; -sim | -cisco | -oki | -wec | -winbond) os= basic_machine=$1 ;; -scout) ;; -wrs) os=-vxworks basic_machine=$1 ;; -chorusos*) os=-chorusos basic_machine=$1 ;; -chorusrdb) os=-chorusrdb basic_machine=$1 ;; -hiux*) os=-hiuxwe2 ;; -sco6) os=-sco5v6 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5) os=-sco3.2v5 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco4) os=-sco3.2v4 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2.[4-9]*) os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2v[4-9]*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5v6*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco*) os=-sco3.2v2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -udk*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -isc) os=-isc2.2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -clix*) basic_machine=clipper-intergraph ;; -isc*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -lynx*178) os=-lynxos178 ;; -lynx*5) os=-lynxos5 ;; -lynx*) os=-lynxos ;; -ptx*) basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` ;; -windowsnt*) os=`echo $os | sed -e 's/windowsnt/winnt/'` ;; -psos*) os=-psos ;; -mint | -mint[0-9]*) basic_machine=m68k-atari os=-mint ;; esac # Decode aliases for certain CPU-COMPANY combinations. case $basic_machine in # Recognize the basic CPU types without company name. # Some are omitted here because they have special meanings below. 1750a | 580 \ | a29k \ | aarch64 | aarch64_be \ | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ | am33_2.0 \ | arc | arceb \ | arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \ | avr | avr32 \ | ba \ | be32 | be64 \ | bfin \ | c4x | c8051 | clipper \ | d10v | d30v | dlx | dsp16xx \ | e2k | epiphany \ | fido | fr30 | frv | ft32 \ | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ | hexagon \ | i370 | i860 | i960 | ia64 \ | ip2k | iq2000 \ | k1om \ | le32 | le64 \ | lm32 \ | m32c | m32r | m32rle | m68000 | m68k | m88k \ | maxq | mb | microblaze | microblazeel | mcore | mep | metag \ | mips | mipsbe | mipseb | mipsel | mipsle \ | mips16 \ | mips64 | mips64el \ | mips64octeon | mips64octeonel \ | mips64orion | mips64orionel \ | mips64r5900 | mips64r5900el \ | mips64vr | mips64vrel \ | mips64vr4100 | mips64vr4100el \ | mips64vr4300 | mips64vr4300el \ | mips64vr5000 | mips64vr5000el \ | mips64vr5900 | mips64vr5900el \ | mipsisa32 | mipsisa32el \ | mipsisa32r2 | mipsisa32r2el \ | mipsisa32r6 | mipsisa32r6el \ | mipsisa64 | mipsisa64el \ | mipsisa64r2 | mipsisa64r2el \ | mipsisa64r6 | mipsisa64r6el \ | mipsisa64sb1 | mipsisa64sb1el \ | mipsisa64sr71k | mipsisa64sr71kel \ | mipsr5900 | mipsr5900el \ | mipstx39 | mipstx39el \ | mn10200 | mn10300 \ | moxie \ | mt \ | msp430 \ | nds32 | nds32le | nds32be \ | nios | nios2 | nios2eb | nios2el \ | ns16k | ns32k \ | open8 | or1k | or1knd | or32 \ | pdp10 | pdp11 | pj | pjl \ | powerpc | powerpc64 | powerpc64le | powerpcle \ | pyramid \ | riscv32 | riscv64 \ | rl78 | rx \ | score \ | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[234]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ | sh64 | sh64le \ | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ | spu \ | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \ | ubicom32 \ | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \ | visium \ | we32k \ | x86 | xc16x | xstormy16 | xtensa \ | z8k | z80) basic_machine=$basic_machine-unknown ;; c54x) basic_machine=tic54x-unknown ;; c55x) basic_machine=tic55x-unknown ;; c6x) basic_machine=tic6x-unknown ;; leon|leon[3-9]) basic_machine=sparc-$basic_machine ;; m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip) basic_machine=$basic_machine-unknown os=-none ;; m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) ;; ms1) basic_machine=mt-unknown ;; strongarm | thumb | xscale) basic_machine=arm-unknown ;; xgate) basic_machine=$basic_machine-unknown os=-none ;; xscaleeb) basic_machine=armeb-unknown ;; xscaleel) basic_machine=armel-unknown ;; # We use `pc' rather than `unknown' # because (1) that's what they normally are, and # (2) the word "unknown" tends to confuse beginning users. i*86 | x86_64) basic_machine=$basic_machine-pc ;; # Object if more than one company name word. *-*-*) echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 exit 1 ;; # Recognize the basic CPU types with company name. 580-* \ | a29k-* \ | aarch64-* | aarch64_be-* \ | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ | alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \ | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ | avr-* | avr32-* \ | ba-* \ | be32-* | be64-* \ | bfin-* | bs2000-* \ | c[123]* | c30-* | [cjt]90-* | c4x-* \ | c8051-* | clipper-* | craynv-* | cydra-* \ | d10v-* | d30v-* | dlx-* \ | e2k-* | elxsi-* \ | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ | h8300-* | h8500-* \ | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ | hexagon-* \ | i*86-* | i860-* | i960-* | ia64-* \ | ip2k-* | iq2000-* \ | k1om-* \ | le32-* | le64-* \ | lm32-* \ | m32c-* | m32r-* | m32rle-* \ | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ | m88110-* | m88k-* | maxq-* | mcore-* | metag-* \ | microblaze-* | microblazeel-* \ | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ | mips16-* \ | mips64-* | mips64el-* \ | mips64octeon-* | mips64octeonel-* \ | mips64orion-* | mips64orionel-* \ | mips64r5900-* | mips64r5900el-* \ | mips64vr-* | mips64vrel-* \ | mips64vr4100-* | mips64vr4100el-* \ | mips64vr4300-* | mips64vr4300el-* \ | mips64vr5000-* | mips64vr5000el-* \ | mips64vr5900-* | mips64vr5900el-* \ | mipsisa32-* | mipsisa32el-* \ | mipsisa32r2-* | mipsisa32r2el-* \ | mipsisa32r6-* | mipsisa32r6el-* \ | mipsisa64-* | mipsisa64el-* \ | mipsisa64r2-* | mipsisa64r2el-* \ | mipsisa64r6-* | mipsisa64r6el-* \ | mipsisa64sb1-* | mipsisa64sb1el-* \ | mipsisa64sr71k-* | mipsisa64sr71kel-* \ | mipsr5900-* | mipsr5900el-* \ | mipstx39-* | mipstx39el-* \ | mmix-* \ | mt-* \ | msp430-* \ | nds32-* | nds32le-* | nds32be-* \ | nios-* | nios2-* | nios2eb-* | nios2el-* \ | none-* | np1-* | ns16k-* | ns32k-* \ | open8-* \ | or1k*-* \ | orion-* \ | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \ | pyramid-* \ | riscv32-* | riscv64-* \ | rl78-* | romp-* | rs6000-* | rx-* \ | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ | sparclite-* \ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx*-* \ | tahoe-* \ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ | tile*-* \ | tron-* \ | ubicom32-* \ | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \ | vax-* \ | visium-* \ | we32k-* \ | x86-* | x86_64-* | xc16x-* | xps100-* \ | xstormy16-* | xtensa*-* \ | ymp-* \ | z8k-* | z80-*) ;; # Recognize the basic CPU types without company name, with glob match. xtensa*) basic_machine=$basic_machine-unknown ;; # Recognize the various machine names and aliases which stand # for a CPU type and a company and sometimes even an OS. 386bsd) basic_machine=i386-unknown os=-bsd ;; 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) basic_machine=m68000-att ;; 3b*) basic_machine=we32k-att ;; a29khif) basic_machine=a29k-amd os=-udi ;; abacus) basic_machine=abacus-unknown ;; adobe68k) basic_machine=m68010-adobe os=-scout ;; alliant | fx80) basic_machine=fx80-alliant ;; altos | altos3068) basic_machine=m68k-altos ;; am29k) basic_machine=a29k-none os=-bsd ;; amd64) basic_machine=x86_64-pc ;; amd64-*) basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` ;; amdahl) basic_machine=580-amdahl os=-sysv ;; amiga | amiga-*) basic_machine=m68k-unknown ;; amigaos | amigados) basic_machine=m68k-unknown os=-amigaos ;; amigaunix | amix) basic_machine=m68k-unknown os=-sysv4 ;; apollo68) basic_machine=m68k-apollo os=-sysv ;; apollo68bsd) basic_machine=m68k-apollo os=-bsd ;; aros) basic_machine=i386-pc os=-aros ;; asmjs) basic_machine=asmjs-unknown ;; aux) basic_machine=m68k-apple os=-aux ;; balance) basic_machine=ns32k-sequent os=-dynix ;; blackfin) basic_machine=bfin-unknown os=-linux ;; blackfin-*) basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; bluegene*) basic_machine=powerpc-ibm os=-cnk ;; c54x-*) basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c55x-*) basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c6x-*) basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c90) basic_machine=c90-cray os=-unicos ;; cegcc) basic_machine=arm-unknown os=-cegcc ;; convex-c1) basic_machine=c1-convex os=-bsd ;; convex-c2) basic_machine=c2-convex os=-bsd ;; convex-c32) basic_machine=c32-convex os=-bsd ;; convex-c34) basic_machine=c34-convex os=-bsd ;; convex-c38) basic_machine=c38-convex os=-bsd ;; cray | j90) basic_machine=j90-cray os=-unicos ;; craynv) basic_machine=craynv-cray os=-unicosmp ;; cr16 | cr16-*) basic_machine=cr16-unknown os=-elf ;; crds | unos) basic_machine=m68k-crds ;; crisv32 | crisv32-* | etraxfs*) basic_machine=crisv32-axis ;; cris | cris-* | etrax*) basic_machine=cris-axis ;; crx) basic_machine=crx-unknown os=-elf ;; da30 | da30-*) basic_machine=m68k-da30 ;; decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) basic_machine=mips-dec ;; decsystem10* | dec10*) basic_machine=pdp10-dec os=-tops10 ;; decsystem20* | dec20*) basic_machine=pdp10-dec os=-tops20 ;; delta | 3300 | motorola-3300 | motorola-delta \ | 3300-motorola | delta-motorola) basic_machine=m68k-motorola ;; delta88) basic_machine=m88k-motorola os=-sysv3 ;; dicos) basic_machine=i686-pc os=-dicos ;; djgpp) basic_machine=i586-pc os=-msdosdjgpp ;; dpx20 | dpx20-*) basic_machine=rs6000-bull os=-bosx ;; dpx2* | dpx2*-bull) basic_machine=m68k-bull os=-sysv3 ;; ebmon29k) basic_machine=a29k-amd os=-ebmon ;; elxsi) basic_machine=elxsi-elxsi os=-bsd ;; encore | umax | mmax) basic_machine=ns32k-encore ;; es1800 | OSE68k | ose68k | ose | OSE) basic_machine=m68k-ericsson os=-ose ;; fx2800) basic_machine=i860-alliant ;; genix) basic_machine=ns32k-ns ;; gmicro) basic_machine=tron-gmicro os=-sysv ;; go32) basic_machine=i386-pc os=-go32 ;; h3050r* | hiux*) basic_machine=hppa1.1-hitachi os=-hiuxwe2 ;; h8300hms) basic_machine=h8300-hitachi os=-hms ;; h8300xray) basic_machine=h8300-hitachi os=-xray ;; h8500hms) basic_machine=h8500-hitachi os=-hms ;; harris) basic_machine=m88k-harris os=-sysv3 ;; hp300-*) basic_machine=m68k-hp ;; hp300bsd) basic_machine=m68k-hp os=-bsd ;; hp300hpux) basic_machine=m68k-hp os=-hpux ;; hp3k9[0-9][0-9] | hp9[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k2[0-9][0-9] | hp9k31[0-9]) basic_machine=m68000-hp ;; hp9k3[2-9][0-9]) basic_machine=m68k-hp ;; hp9k6[0-9][0-9] | hp6[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k7[0-79][0-9] | hp7[0-79][0-9]) basic_machine=hppa1.1-hp ;; hp9k78[0-9] | hp78[0-9]) # FIXME: really hppa2.0-hp basic_machine=hppa1.1-hp ;; hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) # FIXME: really hppa2.0-hp basic_machine=hppa1.1-hp ;; hp9k8[0-9][13679] | hp8[0-9][13679]) basic_machine=hppa1.1-hp ;; hp9k8[0-9][0-9] | hp8[0-9][0-9]) basic_machine=hppa1.0-hp ;; hppa-next) os=-nextstep3 ;; hppaosf) basic_machine=hppa1.1-hp os=-osf ;; hppro) basic_machine=hppa1.1-hp os=-proelf ;; i370-ibm* | ibm*) basic_machine=i370-ibm ;; i*86v32) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-sysv32 ;; i*86v4*) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-sysv4 ;; i*86v) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-sysv ;; i*86sol2) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-solaris2 ;; i386mach) basic_machine=i386-mach os=-mach ;; i386-vsta | vsta) basic_machine=i386-unknown os=-vsta ;; iris | iris4d) basic_machine=mips-sgi case $os in -irix*) ;; *) os=-irix4 ;; esac ;; isi68 | isi) basic_machine=m68k-isi os=-sysv ;; leon-*|leon[3-9]-*) basic_machine=sparc-`echo $basic_machine | sed 's/-.*//'` ;; m68knommu) basic_machine=m68k-unknown os=-linux ;; m68knommu-*) basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; m88k-omron*) basic_machine=m88k-omron ;; magnum | m3230) basic_machine=mips-mips os=-sysv ;; merlin) basic_machine=ns32k-utek os=-sysv ;; microblaze*) basic_machine=microblaze-xilinx ;; mingw64) basic_machine=x86_64-pc os=-mingw64 ;; mingw32) basic_machine=i686-pc os=-mingw32 ;; mingw32ce) basic_machine=arm-unknown os=-mingw32ce ;; miniframe) basic_machine=m68000-convergent ;; *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*) basic_machine=m68k-atari os=-mint ;; mips3*-*) basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'` ;; mips3*) basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown ;; monitor) basic_machine=m68k-rom68k os=-coff ;; morphos) basic_machine=powerpc-unknown os=-morphos ;; moxiebox) basic_machine=moxie-unknown os=-moxiebox ;; msdos) basic_machine=i386-pc os=-msdos ;; ms1-*) basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'` ;; msys) basic_machine=i686-pc os=-msys ;; mvs) basic_machine=i370-ibm os=-mvs ;; nacl) basic_machine=le32-unknown os=-nacl ;; 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AS_MKDIR_P(crypto/cipher) AS_MKDIR_P(crypto/hash) AS_MKDIR_P(crypto/kernel) AS_MKDIR_P(crypto/math) AS_MKDIR_P(crypto/replay) AS_MKDIR_P(crypto/test) AS_MKDIR_P(doc) AS_MKDIR_P(srtp) AS_MKDIR_P(test) libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/000077500000000000000000000000001304141034500210735ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/Makefile.in000066400000000000000000000046071304141034500231470ustar00rootroot00000000000000# Makefile for crypto test suite # # David A. McGrew # Cisco Systems, Inc. srcdir = @srcdir@ top_srcdir = @top_srcdir@ top_builddir = @top_builddir@ VPATH = @srcdir@ CC = @CC@ INCDIR = -Iinclude -I$(srcdir)/include -I$(top_srcdir)/include DEFS = @DEFS@ CPPFLAGS= @CPPFLAGS@ CFLAGS = @CFLAGS@ LIBS = @LIBS@ LDFLAGS = @LDFLAGS@ -L. -L.. COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS) CRYPTOLIB = -lsrtp2 RANLIB = @RANLIB@ # EXE defines the suffix on executables - it's .exe for cygwin, and # null on linux, bsd, and OS X and other OSes. we define this so that # `make clean` will work on the cygwin platform EXE = @EXE@ # Random source. USE_OPENSSL = @USE_OPENSSL@ ifdef ARCH DEFS += -D$(ARCH)=1 endif ifdef sysname DEFS += -D$(sysname)=1 endif .PHONY: dummy all runtest clean superclean dummy : all runtest # test applications ifneq (1, $(USE_OPENSSL)) AES_CALC = test/aes_calc$(EXE) endif testapp = test/cipher_driver$(EXE) test/datatypes_driver$(EXE) \ test/stat_driver$(EXE) test/sha1_driver$(EXE) \ test/kernel_driver$(EXE) $(AES_CALC) \ test/env$(EXE) # data values used to test the aes_calc application for AES-128 k128=000102030405060708090a0b0c0d0e0f p128=00112233445566778899aabbccddeeff c128=69c4e0d86a7b0430d8cdb78070b4c55a # data values used to test the aes_calc application for AES-256 k256=000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f p256=00112233445566778899aabbccddeeff c256=8ea2b7ca516745bfeafc49904b496089 runtest: $(testapp) test/env$(EXE) # print out information on the build environment @echo "running crypto test applications..." ifneq (1, $(USE_OPENSSL)) test `test/aes_calc $(k128) $(p128)` = $(c128) test `test/aes_calc $(k256) $(p256)` = $(c256) endif test/cipher_driver$(EXE) -v >/dev/null test/datatypes_driver$(EXE) -v >/dev/null test/stat_driver$(EXE) >/dev/null test/sha1_driver$(EXE) -v >/dev/null test/kernel_driver$(EXE) -v >/dev/null @echo "crypto test applications passed." # the rule for making object files and test apps %.o: %.c $(COMPILE) -c $< -o $@ %$(EXE): %.c $(srcdir)/../test/getopt_s.c $(COMPILE) $(LDFLAGS) $< $(srcdir)/../test/getopt_s.c -o $@ $(CRYPTOLIB) $(LIBS) all: $(testapp) # housekeeping functions clean: rm -f $(testapp) *.o */*.o for a in * .* */*; do if [ -f "$$a~" ] ; then rm $$a~; fi; done; rm -f `find . -name "*.[ch]~*~"` rm -rf latex superclean: clean rm -f *core TAGS ktrace.out # EOF libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/000077500000000000000000000000001304141034500223455ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/aes.c000066400000000000000000002756651304141034500233060ustar00rootroot00000000000000/* * aes.c * * An implemnetation of the AES block cipher. * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "aes.h" #include "err.h" /* * we use the tables T0, T1, T2, T3, and T4 to compute AES, and * the tables U0, U1, U2, and U4 to compute its inverse * * different tables are used on little-endian (Intel, VMS) and * big-endian processors (everything else) * * these tables are computed using the program tables/aes_tables; use * this program to generate different tables for porting or * optimization on a different platform */ #ifndef WORDS_BIGENDIAN static const uint32_t T0[256] = { 0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 0xdf2f2ff, 0xbd6b6bd6, 0xb16f6fde, 0x54c5c591, 0x50303060, 0x3010102, 0xa96767ce, 0x7d2b2b56, 0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec, 0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, 0x15fafaef, 0xeb5959b2, 0xc947478e, 0xbf0f0fb, 0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b, 0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c, 0x5a36366c, 0x413f3f7e, 0x2f7f7f5, 0x4fcccc83, 0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x8f1f1f9, 0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a, 0xc040408, 0x52c7c795, 0x65232346, 0x5ec3c39d, 0x28181830, 0xa1969637, 0xf05050a, 0xb59a9a2f, 0x907070e, 0x36121224, 0x9b80801b, 0x3de2e2df, 0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, 0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, 0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b, 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413, 0xf55353a6, 0x68d1d1b9, 0x0, 0x2cededc1, 0x60202040, 0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6, 0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85, 0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, 0xcf45458a, 0x10f9f9e9, 0x6020204, 0x817f7ffe, 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b, 0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05, 0xad92923f, 0xbc9d9d21, 0x48383870, 0x4f5f5f1, 0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142, 0x30101020, 0x1affffe5, 0xef3f3fd, 0x6dd2d2bf, 0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3, 0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, 0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6, 0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, 0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b, 0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad, 0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 0xdb494992, 0xa06060c, 0x6c242448, 0xe45c5cb8, 0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, 0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda, 0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, 0xb46c6cd8, 0xfa5656ac, 0x7f4f4f3, 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810, 0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c, 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697, 0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e, 0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, 0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, 0xd8484890, 0x5030306, 0x1f6f6f7, 0x120e0e1c, 0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, 0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27, 0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, 0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433, 0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5, 0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0, 0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e, 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c, }; static const uint32_t T1[256] = { 0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, 0xf2f2ff0d, 0x6b6bd6bd, 0x6f6fdeb1, 0xc5c59154, 0x30306050, 0x1010203, 0x6767cea9, 0x2b2b567d, 0xfefee719, 0xd7d7b562, 0xabab4de6, 0x7676ec9a, 0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87, 0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b, 0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, 0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b, 0xb7b775c2, 0xfdfde11c, 0x93933dae, 0x26264c6a, 0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, 0x3434685c, 0xa5a551f4, 0xe5e5d134, 0xf1f1f908, 0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f, 0x404080c, 0xc7c79552, 0x23234665, 0xc3c39d5e, 0x18183028, 0x969637a1, 0x5050a0f, 0x9a9a2fb5, 0x7070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d, 0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, 0x909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e, 0x1b1b362d, 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb, 0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, 0x2929527b, 0xe3e3dd3e, 0x2f2f5e71, 0x84841397, 0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, 0x20204060, 0xfcfce31f, 0xb1b179c8, 0x5b5bb6ed, 0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b, 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a, 0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, 0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, 0x45458acf, 0xf9f9e910, 0x2020406, 0x7f7ffe81, 0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3, 0x5151a2f3, 0xa3a35dfe, 0x404080c0, 0x8f8f058a, 0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104, 0xbcbc63df, 0xb6b677c1, 0xdadaaf75, 0x21214263, 0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, 0xcdcd814c, 0xc0c1814, 0x13132635, 0xececc32f, 0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, 0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, 0x6464c8ac, 0x5d5dbae7, 0x1919322b, 0x7373e695, 0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f, 0x22224466, 0x2a2a547e, 0x90903bab, 0x88880b83, 0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, 0xdedea779, 0x5e5ebce2, 0xb0b161d, 0xdbdbad76, 0xe0e0db3b, 0x32326456, 0x3a3a744e, 0xa0a141e, 0x494992db, 0x6060c0a, 0x2424486c, 0x5c5cb8e4, 0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6, 0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, 0xe7e7d532, 0xc8c88b43, 0x37376e59, 0x6d6ddab7, 0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, 0x6c6cd8b4, 0x5656acfa, 0xf4f4f307, 0xeaeacf25, 0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x8081018, 0xbaba6fd5, 0x7878f088, 0x25254a6f, 0x2e2e5c72, 0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751, 0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21, 0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, 0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa, 0x484890d8, 0x3030605, 0xf6f6f701, 0xe0e1c12, 0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0, 0x86861791, 0xc1c19958, 0x1d1d3a27, 0x9e9e27b9, 0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233, 0x6969d2bb, 0xd9d9a970, 0x8e8e0789, 0x949433a7, 0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, 0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a, 0x8c8c038f, 0xa1a159f8, 0x89890980, 0xd0d1a17, 0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8, 0x414182c3, 0x999929b0, 0x2d2d5a77, 0xf0f1e11, 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a, }; static const uint32_t T2[256] = { 0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, 0xf2ff0df2, 0x6bd6bd6b, 0x6fdeb16f, 0xc59154c5, 0x30605030, 0x1020301, 0x67cea967, 0x2b567d2b, 0xfee719fe, 0xd7b562d7, 0xab4de6ab, 0x76ec9a76, 0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d, 0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0, 0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, 0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0, 0xb775c2b7, 0xfde11cfd, 0x933dae93, 0x264c6a26, 0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, 0x34685c34, 0xa551f4a5, 0xe5d134e5, 0xf1f908f1, 0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15, 0x4080c04, 0xc79552c7, 0x23466523, 0xc39d5ec3, 0x18302818, 0x9637a196, 0x50a0f05, 0x9a2fb59a, 0x70e0907, 0x12243612, 0x801b9b80, 0xe2df3de2, 0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, 0x9121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a, 0x1b362d1b, 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0, 0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, 0x29527b29, 0xe3dd3ee3, 0x2f5e712f, 0x84139784, 0x53a6f553, 0xd1b968d1, 0x0, 0xedc12ced, 0x20406020, 0xfce31ffc, 0xb179c8b1, 0x5bb6ed5b, 0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39, 0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf, 0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, 0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, 0x458acf45, 0xf9e910f9, 0x2040602, 0x7ffe817f, 0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8, 0x51a2f351, 0xa35dfea3, 0x4080c040, 0x8f058a8f, 0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5, 0xbc63dfbc, 0xb677c1b6, 0xdaaf75da, 0x21426321, 0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, 0xcd814ccd, 0xc18140c, 0x13263513, 0xecc32fec, 0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, 0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d, 0x64c8ac64, 0x5dbae75d, 0x19322b19, 0x73e69573, 0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc, 0x22446622, 0x2a547e2a, 0x903bab90, 0x880b8388, 0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, 0xdea779de, 0x5ebce25e, 0xb161d0b, 0xdbad76db, 0xe0db3be0, 0x32645632, 0x3a744e3a, 0xa141e0a, 0x4992db49, 0x60c0a06, 0x24486c24, 0x5cb8e45c, 0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662, 0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, 0xe7d532e7, 0xc88b43c8, 0x376e5937, 0x6ddab76d, 0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, 0x6cd8b46c, 0x56acfa56, 0xf4f307f4, 0xeacf25ea, 0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x8101808, 0xba6fd5ba, 0x78f08878, 0x254a6f25, 0x2e5c722e, 0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6, 0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f, 0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, 0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66, 0x4890d848, 0x3060503, 0xf6f701f6, 0xe1c120e, 0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9, 0x86179186, 0xc19958c1, 0x1d3a271d, 0x9e27b99e, 0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311, 0x69d2bb69, 0xd9a970d9, 0x8e07898e, 0x9433a794, 0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, 0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf, 0x8c038f8c, 0xa159f8a1, 0x89098089, 0xd1a170d, 0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868, 0x4182c341, 0x9929b099, 0x2d5a772d, 0xf1e110f, 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16, }; static const uint32_t T3[256] = { 0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, 0xff0df2f2, 0xd6bd6b6b, 0xdeb16f6f, 0x9154c5c5, 0x60503030, 0x2030101, 0xcea96767, 0x567d2b2b, 0xe719fefe, 0xb562d7d7, 0x4de6abab, 0xec9a7676, 0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, 0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0, 0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, 0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0, 0x75c2b7b7, 0xe11cfdfd, 0x3dae9393, 0x4c6a2626, 0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc, 0x685c3434, 0x51f4a5a5, 0xd134e5e5, 0xf908f1f1, 0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515, 0x80c0404, 0x9552c7c7, 0x46652323, 0x9d5ec3c3, 0x30281818, 0x37a19696, 0xa0f0505, 0x2fb59a9a, 0xe090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2, 0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, 0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a, 0x362d1b1b, 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0, 0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, 0x527b2929, 0xdd3ee3e3, 0x5e712f2f, 0x13978484, 0xa6f55353, 0xb968d1d1, 0x0, 0xc12ceded, 0x40602020, 0xe31ffcfc, 0x79c8b1b1, 0xb6ed5b5b, 0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939, 0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf, 0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, 0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, 0x8acf4545, 0xe910f9f9, 0x4060202, 0xfe817f7f, 0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8, 0xa2f35151, 0x5dfea3a3, 0x80c04040, 0x58a8f8f, 0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5, 0x63dfbcbc, 0x77c1b6b6, 0xaf75dada, 0x42632121, 0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, 0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec, 0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, 0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, 0xc8ac6464, 0xbae75d5d, 0x322b1919, 0xe6957373, 0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc, 0x44662222, 0x547e2a2a, 0x3bab9090, 0xb838888, 0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, 0xa779dede, 0xbce25e5e, 0x161d0b0b, 0xad76dbdb, 0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, 0x92db4949, 0xc0a0606, 0x486c2424, 0xb8e45c5c, 0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262, 0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, 0xd532e7e7, 0x8b43c8c8, 0x6e593737, 0xdab76d6d, 0x18c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, 0xd8b46c6c, 0xacfa5656, 0xf307f4f4, 0xcf25eaea, 0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808, 0x6fd5baba, 0xf0887878, 0x4a6f2525, 0x5c722e2e, 0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, 0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f, 0x96dd4b4b, 0x61dcbdbd, 0xd868b8b, 0xf858a8a, 0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666, 0x90d84848, 0x6050303, 0xf701f6f6, 0x1c120e0e, 0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9, 0x17918686, 0x9958c1c1, 0x3a271d1d, 0x27b99e9e, 0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111, 0xd2bb6969, 0xa970d9d9, 0x7898e8e, 0x33a79494, 0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, 0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf, 0x38f8c8c, 0x59f8a1a1, 0x9808989, 0x1a170d0d, 0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868, 0x82c34141, 0x29b09999, 0x5a772d2d, 0x1e110f0f, 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616, }; static const uint32_t U0[256] = { 0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, 0xcb6bab3b, 0xf1459d1f, 0xab58faac, 0x9303e34b, 0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5, 0xfcd7e54f, 0xd7cb2ac5, 0x80443526, 0x8fa362b5, 0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d, 0x2752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b, 0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295, 0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e, 0x6a89c275, 0x78798ef4, 0x6b3e5899, 0xdd71b927, 0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, 0x184adf63, 0x82311ae5, 0x60335197, 0x457f5362, 0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9, 0x58684870, 0x19fd458f, 0x876cde94, 0xb7f87b52, 0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, 0x728ebb2, 0x3c2b52f, 0x9a7bc586, 0xa50837d3, 0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, 0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e, 0xcdf4da65, 0xd5be0506, 0x1f6234d1, 0x8afea6c4, 0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, 0x39ec830b, 0xaaef6040, 0x69f715e, 0x51106ebd, 0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, 0xb58d5491, 0x55dc471, 0x6fd40604, 0xff155060, 0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967, 0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879, 0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x0, 0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, 0xfbff0efd, 0x5638850f, 0x1ed5ae3d, 0x27392d36, 0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624, 0xb1670a0c, 0xfe75793, 0xd296eeb4, 0x9e919b1b, 0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c, 0xaba93e2, 0xe52aa0c0, 0x43e0223c, 0x1d171b12, 0xb0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, 0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3, 0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, 0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, 0xcadc31d7, 0x10856342, 0x40229713, 0x2011c684, 0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7, 0x4b2f9e1d, 0xf330b2dc, 0xec52860d, 0xd0e3c177, 0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, 0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, 0xef903322, 0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, 0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f, 0xe49d3a2c, 0xd927850, 0x9bcc5f6a, 0x62467e54, 0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, 0xbe805d9f, 0x7c93d069, 0xa92dd56f, 0xb31225cf, 0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, 0x97826cd, 0xf418596e, 0x1b79aec, 0xa89a4f83, 0x656e95e6, 0x7ee6ffaa, 0x8cfbc21, 0xe6e815ef, 0xd99be7ba, 0xce366f4a, 0xd4099fea, 0xd67cb029, 0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235, 0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733, 0x4a9804f1, 0xf7daec41, 0xe50cd7f, 0x2ff69117, 0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4, 0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1, 0x7f516546, 0x4ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb, 0x5a1d67b3, 0x52d2db92, 0x335610e9, 0x1347d66d, 0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb, 0xee27a9ce, 0x35c961b7, 0xede51ce1, 0x3cb1477a, 0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, 0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478, 0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, 0x72c31d16, 0xc25e2bc, 0x8b493c28, 0x41950dff, 0x7101a839, 0xdeb30c08, 0x9ce4b4d8, 0x90c15664, 0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0, }; static const uint32_t U1[256] = { 0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, 0x6bab3bcb, 0x459d1ff1, 0x58faacab, 0x3e34b93, 0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525, 0xd7e54ffc, 0xcb2ac5d7, 0x44352680, 0xa362b58f, 0x5ab1de49, 0x1bba2567, 0xeea4598, 0xc0fe5de1, 0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6, 0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da, 0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44, 0x89c2756a, 0x798ef478, 0x3e58996b, 0x71b927dd, 0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4, 0x4adf6318, 0x311ae582, 0x33519760, 0x7f536245, 0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994, 0x68487058, 0xfd458f19, 0x6cde9487, 0xf87b52b7, 0xd373ab23, 0x24b72e2, 0x8f1fe357, 0xab55662a, 0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x837d3a5, 0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, 0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1, 0xf4da65cd, 0xbe0506d5, 0x6234d11f, 0xfea6c48a, 0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, 0xec830b39, 0xef6040aa, 0x9f715e06, 0x106ebd51, 0x8a213ef9, 0x6dd963d, 0x53eddae, 0xbde64d46, 0x8d5491b5, 0x5dc47105, 0xd406046f, 0x155060ff, 0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777, 0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db, 0xa7ca147, 0xf427ce9, 0x1e84f8c9, 0x0, 0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, 0xff0efdfb, 0x38850f56, 0xd5ae3d1e, 0x392d3627, 0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a, 0x670a0cb1, 0xe757930f, 0x96eeb4d2, 0x919b1b9e, 0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16, 0xba93e20a, 0x2aa0c0e5, 0xe0223c43, 0x171b121d, 0xd090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, 0x19f15785, 0x775af4c, 0xdd99eebb, 0x607fa3fd, 0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, 0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863, 0xdc31d7ca, 0x85634210, 0x22971340, 0x11c68420, 0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, 0x2f9e1d4b, 0x30b2dcf3, 0x52860dec, 0xe3c177d0, 0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, 0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8, 0x903322ef, 0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0xbd49836, 0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4, 0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462, 0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, 0x805d9fbe, 0x93d0697c, 0x2dd56fa9, 0x1225cfb3, 0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, 0x7826cd09, 0x18596ef4, 0xb79aec01, 0x9a4f83a8, 0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6, 0x9be7bad9, 0x366f4ace, 0x99fead4, 0x7cb029d6, 0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0, 0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315, 0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f, 0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x496e4df, 0xb5d19ee3, 0x886a4c1b, 0x1f2cc1b8, 0x5165467f, 0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e, 0x1d67b35a, 0xd2db9252, 0x5610e933, 0x47d66d13, 0x61d79a8c, 0xca1377a, 0x14f8598e, 0x3c13eb89, 0x27a9ceee, 0xc961b735, 0xe51ce1ed, 0xb1477a3c, 0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, 0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886, 0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, 0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41, 0x1a83971, 0xb30c08de, 0xe4b4d89c, 0xc1566490, 0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042, }; static const uint32_t U2[256] = { 0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, 0xab3bcb6b, 0x9d1ff145, 0xfaacab58, 0xe34b9303, 0x302055fa, 0x76adf66d, 0xcc889176, 0x2f5254c, 0xe54ffcd7, 0x2ac5d7cb, 0x35268044, 0x62b58fa3, 0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0, 0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9, 0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59, 0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8, 0xc2756a89, 0x8ef47879, 0x58996b3e, 0xb927dd71, 0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a, 0xdf63184a, 0x1ae58231, 0x51976033, 0x5362457f, 0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x8f9942b, 0x48705868, 0x458f19fd, 0xde94876c, 0x7b52b7f8, 0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, 0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508, 0x2830f287, 0xbf23b2a5, 0x302ba6a, 0x16ed5c82, 0xcf8a2b1c, 0x79a792b4, 0x7f3f0f2, 0x694ea1e2, 0xda65cdf4, 0x506d5be, 0x34d11f62, 0xa6c48afe, 0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, 0x830b39ec, 0x6040aaef, 0x715e069f, 0x6ebd5110, 0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, 0x5491b58d, 0xc471055d, 0x6046fd4, 0x5060ff15, 0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e, 0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee, 0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x0, 0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, 0xefdfbff, 0x850f5638, 0xae3d1ed5, 0x2d362739, 0xf0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e, 0xa0cb167, 0x57930fe7, 0xeeb4d296, 0x9b1b9e91, 0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a, 0x93e20aba, 0xa0c0e52a, 0x223c43e0, 0x1b121d17, 0x90e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, 0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60, 0x1f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, 0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, 0x31d7cadc, 0x63421085, 0x97134022, 0xc6842011, 0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1, 0x9e1d4b2f, 0xb2dcf330, 0x860dec52, 0xc177d0e3, 0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, 0xfca8c48c, 0xf0a01a3f, 0x7d56d82c, 0x3322ef90, 0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, 0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf, 0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246, 0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, 0x5d9fbe80, 0xd0697c93, 0xd56fa92d, 0x25cfb312, 0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, 0x26cd0978, 0x596ef418, 0x9aec01b7, 0x4f83a89a, 0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8, 0xe7bad99b, 0x6f4ace36, 0x9fead409, 0xb029d67c, 0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066, 0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8, 0x4f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6, 0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04, 0xd19ee3b5, 0x6a4c1b88, 0x2cc1b81f, 0x65467f51, 0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0xbfb2e41, 0x67b35a1d, 0xdb9252d2, 0x10e93356, 0xd66d1347, 0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c, 0xa9ceee27, 0x61b735c9, 0x1ce1ede5, 0x477a3cb1, 0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, 0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db, 0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, 0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0xdff4195, 0xa8397101, 0xc08deb3, 0xb4d89ce4, 0x566490c1, 0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257, }; static const uint32_t U3[256] = { 0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, 0x3bcb6bab, 0x1ff1459d, 0xacab58fa, 0x4b9303e3, 0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02, 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435, 0xb58fa362, 0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe, 0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3, 0x3e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952, 0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9, 0x756a89c2, 0xf478798e, 0x996b3e58, 0x27dd71b9, 0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace, 0x63184adf, 0xe582311a, 0x97603351, 0x62457f53, 0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08, 0x70586848, 0x8f19fd45, 0x94876cde, 0x52b7f87b, 0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, 0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837, 0x30f28728, 0x23b2a5bf, 0x2ba6a03, 0xed5c8216, 0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269, 0x65cdf4da, 0x6d5be05, 0xd11f6234, 0xc48afea6, 0x349d532e, 0xa2a055f3, 0x532e18a, 0xa475ebf6, 0xb39ec83, 0x40aaef60, 0x5e069f71, 0xbd51106e, 0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, 0x91b58d54, 0x71055dc4, 0x46fd406, 0x60ff1550, 0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9, 0xb0bd42e8, 0x7888b89, 0xe7385b19, 0x79dbeec8, 0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x0, 0x9838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, 0xfdfbff0e, 0xf563885, 0x3d1ed5ae, 0x3627392d, 0xa64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36, 0xcb1670a, 0x930fe757, 0xb4d296ee, 0x1b9e919b, 0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12, 0xe20aba93, 0xc0e52aa0, 0x3c43e022, 0x121d171b, 0xe0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, 0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f, 0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, 0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4, 0xd7cadc31, 0x42108563, 0x13402297, 0x842011c6, 0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129, 0x1d4b2f9e, 0xdcf330b2, 0xdec5286, 0x77d0e3c1, 0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, 0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d, 0x22ef9033, 0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, 0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad, 0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e, 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, 0x9fbe805d, 0x697c93d0, 0x6fa92dd5, 0xcfb31225, 0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, 0xcd097826, 0x6ef41859, 0xec01b79a, 0x83a89a4f, 0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815, 0xbad99be7, 0x4ace366f, 0xead4099f, 0x29d67cb0, 0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2, 0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7, 0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691, 0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496, 0x9ee3b5d1, 0x4c1b886a, 0xc1b81f2c, 0x467f5165, 0x9d04ea5e, 0x15d358c, 0xfa737487, 0xfb2e410b, 0xb35a1d67, 0x9252d2db, 0xe9335610, 0x6d1347d6, 0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13, 0xceee27a9, 0xb735c961, 0xe1ede51c, 0x7a3cb147, 0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, 0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44, 0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, 0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d, 0x397101a8, 0x8deb30c, 0xd89ce4b4, 0x6490c156, 0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8, }; #else /* assume big endian */ static const uint32_t T0[256] = { 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, 0x60303050, 0x2010103, 0xce6767a9, 0x562b2b7d, 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, 0x804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 0x30181828, 0x379696a1, 0xa05050f, 0x2f9a9ab5, 0xe070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, 0xa65353f5, 0xb9d1d168, 0x0, 0xc1eded2c, 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, 0x8a4545cf, 0xe9f9f910, 0x4020206, 0xfe7f7f81, 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x58f8f8a, 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 0x44222266, 0x542a2a7e, 0x3b9090ab, 0xb888883, 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, 0x924949db, 0xc06060a, 0x4824246c, 0xb85c5ce4, 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, 0x18d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, 0x964b4bdd, 0x61bdbddc, 0xd8b8b86, 0xf8a8a85, 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, 0x904848d8, 0x6030305, 0xf7f6f601, 0x1c0e0e12, 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, 0xd26969bb, 0xa9d9d970, 0x78e8e89, 0x339494a7, 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, 0x38c8c8f, 0x59a1a1f8, 0x9898980, 0x1a0d0d17, 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a, }; static const uint32_t T1[256] = { 0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, 0xdfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, 0x50603030, 0x3020101, 0xa9ce6767, 0x7d562b2b, 0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, 0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, 0x15effafa, 0xebb25959, 0xc98e4747, 0xbfbf0f0, 0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, 0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, 0x5a6c3636, 0x417e3f3f, 0x2f5f7f7, 0x4f83cccc, 0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x8f9f1f1, 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, 0xc080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, 0x28301818, 0xa1379696, 0xf0a0505, 0xb52f9a9a, 0x90e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, 0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, 0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, 0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, 0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, 0xf5a65353, 0x68b9d1d1, 0x0, 0x2cc1eded, 0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, 0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, 0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, 0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, 0xcf8a4545, 0x10e9f9f9, 0x6040202, 0x81fe7f7f, 0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, 0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, 0xad3f9292, 0xbc219d9d, 0x48703838, 0x4f1f5f5, 0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, 0x30201010, 0x1ae5ffff, 0xefdf3f3, 0x6dbfd2d2, 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, 0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, 0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, 0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, 0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, 0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, 0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, 0xdb924949, 0xa0c0606, 0x6c482424, 0xe4b85c5c, 0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, 0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, 0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, 0xb4d86c6c, 0xfaac5656, 0x7f3f4f4, 0x25cfeaea, 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, 0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, 0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, 0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, 0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, 0xd8904848, 0x5060303, 0x1f7f6f6, 0x121c0e0e, 0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, 0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, 0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, 0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, 0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, 0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, 0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616, }; static const uint32_t T2[256] = { 0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, 0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, 0x30506030, 0x1030201, 0x67a9ce67, 0x2b7d562b, 0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, 0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, 0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, 0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, 0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, 0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, 0x40c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, 0x18283018, 0x96a13796, 0x50f0a05, 0x9ab52f9a, 0x7090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, 0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, 0x91b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, 0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, 0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, 0x53f5a653, 0xd168b9d1, 0x0, 0xed2cc1ed, 0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, 0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, 0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, 0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, 0x45cf8a45, 0xf910e9f9, 0x2060402, 0x7f81fe7f, 0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, 0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, 0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, 0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, 0xcd4c81cd, 0xc14180c, 0x13352613, 0xec2fc3ec, 0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, 0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, 0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, 0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, 0xde79a7de, 0x5ee2bc5e, 0xb1d160b, 0xdb76addb, 0xe03bdbe0, 0x32566432, 0x3a4e743a, 0xa1e140a, 0x49db9249, 0x60a0c06, 0x246c4824, 0x5ce4b85c, 0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, 0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, 0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, 0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x8181008, 0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, 0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, 0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, 0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, 0x48d89048, 0x3050603, 0xf601f7f6, 0xe121c0e, 0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, 0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, 0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, 0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, 0x8c8f038c, 0xa1f859a1, 0x89800989, 0xd171a0d, 0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, 0x41c38241, 0x99b02999, 0x2d775a2d, 0xf111e0f, 0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16, }; static const uint32_t T3[256] = { 0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, 0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, 0x30305060, 0x1010302, 0x6767a9ce, 0x2b2b7d56, 0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, 0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, 0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, 0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, 0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, 0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, 0x4040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, 0x18182830, 0x9696a137, 0x5050f0a, 0x9a9ab52f, 0x707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, 0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, 0x9091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, 0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, 0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, 0x5353f5a6, 0xd1d168b9, 0x0, 0xeded2cc1, 0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, 0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, 0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, 0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, 0x4545cf8a, 0xf9f910e9, 0x2020604, 0x7f7f81fe, 0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, 0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, 0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, 0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, 0xcdcd4c81, 0xc0c1418, 0x13133526, 0xecec2fc3, 0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, 0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, 0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, 0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, 0xdede79a7, 0x5e5ee2bc, 0xb0b1d16, 0xdbdb76ad, 0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0xa0a1e14, 0x4949db92, 0x6060a0c, 0x24246c48, 0x5c5ce4b8, 0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, 0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, 0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, 0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x8081810, 0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, 0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, 0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, 0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, 0x4848d890, 0x3030506, 0xf6f601f7, 0xe0e121c, 0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, 0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, 0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, 0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, 0x8c8c8f03, 0xa1a1f859, 0x89898009, 0xd0d171a, 0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, 0x4141c382, 0x9999b029, 0x2d2d775a, 0xf0f111e, 0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c, }; static const uint32_t U0[256] = { 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, 0x38f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, 0x302887f2, 0x23bfa5b2, 0x2036aba, 0xed16825c, 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, 0x65daf4cd, 0x605bed5, 0xd134621f, 0xc4a6fe8a, 0x342e539d, 0xa2f355a0, 0x58ae132, 0xa4f6eb75, 0xb83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, 0x91548db5, 0x71c45d05, 0x406d46f, 0x605015ff, 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, 0xb0e842bd, 0x7898b88, 0xe7195b38, 0x79c8eedb, 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x0, 0x9808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, 0xfd0efffb, 0xf853856, 0x3daed51e, 0x362d3927, 0xa0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 0xc0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 0xe090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 0x1d9e2f4b, 0xdcb230f3, 0xd8652ec, 0x77c1e3d0, 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, 0x9d5eea04, 0x18c355d, 0xfa877473, 0xfb0b412e, 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, 0x39a80171, 0x80cb3de, 0xd8b4e49c, 0x6456c190, 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742 }; static const uint32_t U1[256] = { 0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, 0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, 0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, 0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, 0x2c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, 0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, 0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, 0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, 0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, 0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, 0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, 0x7b2eb28, 0x32fb5c2, 0x9a86c57b, 0xa5d33708, 0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, 0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, 0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, 0x390b83ec, 0xaa4060ef, 0x65e719f, 0x51bd6e10, 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, 0xb591548d, 0x571c45d, 0x6f0406d4, 0xff605015, 0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, 0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x0, 0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, 0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, 0xb10c0a67, 0xf9357e7, 0xd2b4ee96, 0x9e1b9b91, 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, 0xae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, 0xb0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, 0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, 0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, 0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, 0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, 0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, 0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, 0xe42c3a9d, 0xd507892, 0x9b6a5fcc, 0x62547e46, 0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, 0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, 0x9cd2678, 0xf46e5918, 0x1ec9ab7, 0xa8834f9a, 0x65e6956e, 0x7eaaffe6, 0x821bccf, 0xe6ef15e8, 0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, 0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, 0x4af10498, 0xf741ecda, 0xe7fcd50, 0x2f1791f6, 0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, 0x49d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, 0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, 0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, 0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, 0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, 0x72161dc3, 0xcbce225, 0x8b283c49, 0x41ff0d95, 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, 0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857 }; static const uint32_t U2[256] = { 0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, 0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x3934be3, 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, 0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, 0x5a49deb1, 0x1b6725ba, 0xe9845ea, 0xc0e15dfe, 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, 0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, 0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, 0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, 0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, 0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, 0xd323ab73, 0x2e2724b, 0x8f57e31f, 0xab2a6655, 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x8a5d337, 0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, 0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, 0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, 0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, 0x8af93e21, 0x63d96dd, 0x5aedd3e, 0xbd464de6, 0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, 0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, 0xa47a17c, 0xfe97c42, 0x1ec9f884, 0x0, 0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, 0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, 0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, 0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, 0xd0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, 0x198557f1, 0x74caf75, 0xddbbee99, 0x60fda37f, 0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, 0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, 0xdccad731, 0x85104263, 0x22401397, 0x112084c6, 0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, 0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, 0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, 0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0xb3698d4, 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, 0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, 0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, 0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, 0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, 0x9bd9bae7, 0x36ce4a6f, 0x9d4ea9f, 0x7cd629b0, 0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, 0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, 0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x4dfe496, 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, 0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, 0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, 0x618c9ad7, 0xc7a37a1, 0x148e59f8, 0x3c89eb13, 0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, 0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, 0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, 0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, 0x17139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, 0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8 }; static const uint32_t U3[256] = { 0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, 0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, 0x30fa5520, 0x766df6ad, 0xcc769188, 0x24c25f5, 0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, 0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, 0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, 0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, 0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, 0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x82b94f9, 0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, 0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, 0x2887f230, 0xbfa5b223, 0x36aba02, 0x16825ced, 0xcf1c2b8a, 0x79b492a7, 0x7f2f0f3, 0x69e2a14e, 0xdaf4cd65, 0x5bed506, 0x34621fd1, 0xa6fe8ac4, 0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, 0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, 0x548db591, 0xc45d0571, 0x6d46f04, 0x5015ff60, 0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, 0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x0, 0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, 0xefffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, 0xfd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, 0xa67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, 0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, 0x90d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, 0x1269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, 0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, 0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, 0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, 0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, 0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, 0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, 0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, 0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, 0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, 0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, 0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, 0x4984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, 0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, 0x5eea049d, 0x8c355d01, 0x877473fa, 0xb412efb, 0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, 0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, 0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, 0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, 0x1dc37216, 0xe2250cbc, 0x3c498b28, 0xd9541ff, 0xa8017139, 0xcb3de08, 0xb4e49cd8, 0x56c19064, 0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0 }; #endif /* * the following tables (aes_sbox, aes_inv_sbox, T4, U4) are * endian-neutral */ static const uint8_t aes_sbox[256] = { 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 }; #ifndef CPU_RISC static const uint8_t aes_inv_sbox[256] = { 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d }; #endif /* ! CPU_RISC */ #ifdef CPU_RISC static const uint32_t T4[256] = { 0x63636363, 0x7c7c7c7c, 0x77777777, 0x7b7b7b7b, 0xf2f2f2f2, 0x6b6b6b6b, 0x6f6f6f6f, 0xc5c5c5c5, 0x30303030, 0x01010101, 0x67676767, 0x2b2b2b2b, 0xfefefefe, 0xd7d7d7d7, 0xabababab, 0x76767676, 0xcacacaca, 0x82828282, 0xc9c9c9c9, 0x7d7d7d7d, 0xfafafafa, 0x59595959, 0x47474747, 0xf0f0f0f0, 0xadadadad, 0xd4d4d4d4, 0xa2a2a2a2, 0xafafafaf, 0x9c9c9c9c, 0xa4a4a4a4, 0x72727272, 0xc0c0c0c0, 0xb7b7b7b7, 0xfdfdfdfd, 0x93939393, 0x26262626, 0x36363636, 0x3f3f3f3f, 0xf7f7f7f7, 0xcccccccc, 0x34343434, 0xa5a5a5a5, 0xe5e5e5e5, 0xf1f1f1f1, 0x71717171, 0xd8d8d8d8, 0x31313131, 0x15151515, 0x04040404, 0xc7c7c7c7, 0x23232323, 0xc3c3c3c3, 0x18181818, 0x96969696, 0x05050505, 0x9a9a9a9a, 0x07070707, 0x12121212, 0x80808080, 0xe2e2e2e2, 0xebebebeb, 0x27272727, 0xb2b2b2b2, 0x75757575, 0x09090909, 0x83838383, 0x2c2c2c2c, 0x1a1a1a1a, 0x1b1b1b1b, 0x6e6e6e6e, 0x5a5a5a5a, 0xa0a0a0a0, 0x52525252, 0x3b3b3b3b, 0xd6d6d6d6, 0xb3b3b3b3, 0x29292929, 0xe3e3e3e3, 0x2f2f2f2f, 0x84848484, 0x53535353, 0xd1d1d1d1, 0x00000000, 0xedededed, 0x20202020, 0xfcfcfcfc, 0xb1b1b1b1, 0x5b5b5b5b, 0x6a6a6a6a, 0xcbcbcbcb, 0xbebebebe, 0x39393939, 0x4a4a4a4a, 0x4c4c4c4c, 0x58585858, 0xcfcfcfcf, 0xd0d0d0d0, 0xefefefef, 0xaaaaaaaa, 0xfbfbfbfb, 0x43434343, 0x4d4d4d4d, 0x33333333, 0x85858585, 0x45454545, 0xf9f9f9f9, 0x02020202, 0x7f7f7f7f, 0x50505050, 0x3c3c3c3c, 0x9f9f9f9f, 0xa8a8a8a8, 0x51515151, 0xa3a3a3a3, 0x40404040, 0x8f8f8f8f, 0x92929292, 0x9d9d9d9d, 0x38383838, 0xf5f5f5f5, 0xbcbcbcbc, 0xb6b6b6b6, 0xdadadada, 0x21212121, 0x10101010, 0xffffffff, 0xf3f3f3f3, 0xd2d2d2d2, 0xcdcdcdcd, 0x0c0c0c0c, 0x13131313, 0xecececec, 0x5f5f5f5f, 0x97979797, 0x44444444, 0x17171717, 0xc4c4c4c4, 0xa7a7a7a7, 0x7e7e7e7e, 0x3d3d3d3d, 0x64646464, 0x5d5d5d5d, 0x19191919, 0x73737373, 0x60606060, 0x81818181, 0x4f4f4f4f, 0xdcdcdcdc, 0x22222222, 0x2a2a2a2a, 0x90909090, 0x88888888, 0x46464646, 0xeeeeeeee, 0xb8b8b8b8, 0x14141414, 0xdededede, 0x5e5e5e5e, 0x0b0b0b0b, 0xdbdbdbdb, 0xe0e0e0e0, 0x32323232, 0x3a3a3a3a, 0x0a0a0a0a, 0x49494949, 0x06060606, 0x24242424, 0x5c5c5c5c, 0xc2c2c2c2, 0xd3d3d3d3, 0xacacacac, 0x62626262, 0x91919191, 0x95959595, 0xe4e4e4e4, 0x79797979, 0xe7e7e7e7, 0xc8c8c8c8, 0x37373737, 0x6d6d6d6d, 0x8d8d8d8d, 0xd5d5d5d5, 0x4e4e4e4e, 0xa9a9a9a9, 0x6c6c6c6c, 0x56565656, 0xf4f4f4f4, 0xeaeaeaea, 0x65656565, 0x7a7a7a7a, 0xaeaeaeae, 0x08080808, 0xbabababa, 0x78787878, 0x25252525, 0x2e2e2e2e, 0x1c1c1c1c, 0xa6a6a6a6, 0xb4b4b4b4, 0xc6c6c6c6, 0xe8e8e8e8, 0xdddddddd, 0x74747474, 0x1f1f1f1f, 0x4b4b4b4b, 0xbdbdbdbd, 0x8b8b8b8b, 0x8a8a8a8a, 0x70707070, 0x3e3e3e3e, 0xb5b5b5b5, 0x66666666, 0x48484848, 0x03030303, 0xf6f6f6f6, 0x0e0e0e0e, 0x61616161, 0x35353535, 0x57575757, 0xb9b9b9b9, 0x86868686, 0xc1c1c1c1, 0x1d1d1d1d, 0x9e9e9e9e, 0xe1e1e1e1, 0xf8f8f8f8, 0x98989898, 0x11111111, 0x69696969, 0xd9d9d9d9, 0x8e8e8e8e, 0x94949494, 0x9b9b9b9b, 0x1e1e1e1e, 0x87878787, 0xe9e9e9e9, 0xcececece, 0x55555555, 0x28282828, 0xdfdfdfdf, 0x8c8c8c8c, 0xa1a1a1a1, 0x89898989, 0x0d0d0d0d, 0xbfbfbfbf, 0xe6e6e6e6, 0x42424242, 0x68686868, 0x41414141, 0x99999999, 0x2d2d2d2d, 0x0f0f0f0f, 0xb0b0b0b0, 0x54545454, 0xbbbbbbbb, 0x16161616 }; static const uint32_t U4[256] = { 0x52525252, 0x9090909, 0x6a6a6a6a, 0xd5d5d5d5, 0x30303030, 0x36363636, 0xa5a5a5a5, 0x38383838, 0xbfbfbfbf, 0x40404040, 0xa3a3a3a3, 0x9e9e9e9e, 0x81818181, 0xf3f3f3f3, 0xd7d7d7d7, 0xfbfbfbfb, 0x7c7c7c7c, 0xe3e3e3e3, 0x39393939, 0x82828282, 0x9b9b9b9b, 0x2f2f2f2f, 0xffffffff, 0x87878787, 0x34343434, 0x8e8e8e8e, 0x43434343, 0x44444444, 0xc4c4c4c4, 0xdededede, 0xe9e9e9e9, 0xcbcbcbcb, 0x54545454, 0x7b7b7b7b, 0x94949494, 0x32323232, 0xa6a6a6a6, 0xc2c2c2c2, 0x23232323, 0x3d3d3d3d, 0xeeeeeeee, 0x4c4c4c4c, 0x95959595, 0xb0b0b0b, 0x42424242, 0xfafafafa, 0xc3c3c3c3, 0x4e4e4e4e, 0x8080808, 0x2e2e2e2e, 0xa1a1a1a1, 0x66666666, 0x28282828, 0xd9d9d9d9, 0x24242424, 0xb2b2b2b2, 0x76767676, 0x5b5b5b5b, 0xa2a2a2a2, 0x49494949, 0x6d6d6d6d, 0x8b8b8b8b, 0xd1d1d1d1, 0x25252525, 0x72727272, 0xf8f8f8f8, 0xf6f6f6f6, 0x64646464, 0x86868686, 0x68686868, 0x98989898, 0x16161616, 0xd4d4d4d4, 0xa4a4a4a4, 0x5c5c5c5c, 0xcccccccc, 0x5d5d5d5d, 0x65656565, 0xb6b6b6b6, 0x92929292, 0x6c6c6c6c, 0x70707070, 0x48484848, 0x50505050, 0xfdfdfdfd, 0xedededed, 0xb9b9b9b9, 0xdadadada, 0x5e5e5e5e, 0x15151515, 0x46464646, 0x57575757, 0xa7a7a7a7, 0x8d8d8d8d, 0x9d9d9d9d, 0x84848484, 0x90909090, 0xd8d8d8d8, 0xabababab, 0x0, 0x8c8c8c8c, 0xbcbcbcbc, 0xd3d3d3d3, 0xa0a0a0a, 0xf7f7f7f7, 0xe4e4e4e4, 0x58585858, 0x5050505, 0xb8b8b8b8, 0xb3b3b3b3, 0x45454545, 0x6060606, 0xd0d0d0d0, 0x2c2c2c2c, 0x1e1e1e1e, 0x8f8f8f8f, 0xcacacaca, 0x3f3f3f3f, 0xf0f0f0f, 0x2020202, 0xc1c1c1c1, 0xafafafaf, 0xbdbdbdbd, 0x3030303, 0x1010101, 0x13131313, 0x8a8a8a8a, 0x6b6b6b6b, 0x3a3a3a3a, 0x91919191, 0x11111111, 0x41414141, 0x4f4f4f4f, 0x67676767, 0xdcdcdcdc, 0xeaeaeaea, 0x97979797, 0xf2f2f2f2, 0xcfcfcfcf, 0xcececece, 0xf0f0f0f0, 0xb4b4b4b4, 0xe6e6e6e6, 0x73737373, 0x96969696, 0xacacacac, 0x74747474, 0x22222222, 0xe7e7e7e7, 0xadadadad, 0x35353535, 0x85858585, 0xe2e2e2e2, 0xf9f9f9f9, 0x37373737, 0xe8e8e8e8, 0x1c1c1c1c, 0x75757575, 0xdfdfdfdf, 0x6e6e6e6e, 0x47474747, 0xf1f1f1f1, 0x1a1a1a1a, 0x71717171, 0x1d1d1d1d, 0x29292929, 0xc5c5c5c5, 0x89898989, 0x6f6f6f6f, 0xb7b7b7b7, 0x62626262, 0xe0e0e0e, 0xaaaaaaaa, 0x18181818, 0xbebebebe, 0x1b1b1b1b, 0xfcfcfcfc, 0x56565656, 0x3e3e3e3e, 0x4b4b4b4b, 0xc6c6c6c6, 0xd2d2d2d2, 0x79797979, 0x20202020, 0x9a9a9a9a, 0xdbdbdbdb, 0xc0c0c0c0, 0xfefefefe, 0x78787878, 0xcdcdcdcd, 0x5a5a5a5a, 0xf4f4f4f4, 0x1f1f1f1f, 0xdddddddd, 0xa8a8a8a8, 0x33333333, 0x88888888, 0x7070707, 0xc7c7c7c7, 0x31313131, 0xb1b1b1b1, 0x12121212, 0x10101010, 0x59595959, 0x27272727, 0x80808080, 0xecececec, 0x5f5f5f5f, 0x60606060, 0x51515151, 0x7f7f7f7f, 0xa9a9a9a9, 0x19191919, 0xb5b5b5b5, 0x4a4a4a4a, 0xd0d0d0d, 0x2d2d2d2d, 0xe5e5e5e5, 0x7a7a7a7a, 0x9f9f9f9f, 0x93939393, 0xc9c9c9c9, 0x9c9c9c9c, 0xefefefef, 0xa0a0a0a0, 0xe0e0e0e0, 0x3b3b3b3b, 0x4d4d4d4d, 0xaeaeaeae, 0x2a2a2a2a, 0xf5f5f5f5, 0xb0b0b0b0, 0xc8c8c8c8, 0xebebebeb, 0xbbbbbbbb, 0x3c3c3c3c, 0x83838383, 0x53535353, 0x99999999, 0x61616161, 0x17171717, 0x2b2b2b2b, 0x4040404, 0x7e7e7e7e, 0xbabababa, 0x77777777, 0xd6d6d6d6, 0x26262626, 0xe1e1e1e1, 0x69696969, 0x14141414, 0x63636363, 0x55555555, 0x21212121, 0xc0c0c0c, 0x7d7d7d7d }; #endif /* CPU_RISC */ #define gf2_8_field_polynomial 0x1B /* * gf2_8_shift(z) returns the result of the GF(2^8) 'multiply by x' * operation, using the field representation from AES; that is, the * next gf2_8 value in the cyclic representation of that field. The * value z should be an uint8_t. */ #define gf2_8_shift(z) (((z) & 128) ? \ (((z) << 1) ^ gf2_8_field_polynomial) : ((z) << 1)) /* aes internals */ extern srtp_debug_module_t srtp_mod_aes_icm; static void aes_128_expand_encryption_key (const uint8_t *key, srtp_aes_expanded_key_t *expanded_key) { int i; uint8_t rc; /* initialize round constant */ rc = 1; expanded_key->num_rounds = 10; v128_copy_octet_string(&expanded_key->round[0], key); #if 0 debug_print(srtp_mod_aes_icm, "expanded key[0]: %s", v128_hex_string(&expanded_key->round[0])); #endif /* loop over round keys */ for (i = 1; i < 11; i++) { /* munge first word of round key */ expanded_key->round[i].v8[0] = aes_sbox[expanded_key->round[i - 1].v8[13]] ^ rc; expanded_key->round[i].v8[1] = aes_sbox[expanded_key->round[i - 1].v8[14]]; expanded_key->round[i].v8[2] = aes_sbox[expanded_key->round[i - 1].v8[15]]; expanded_key->round[i].v8[3] = aes_sbox[expanded_key->round[i - 1].v8[12]]; expanded_key->round[i].v32[0] ^= expanded_key->round[i - 1].v32[0]; /* set remaining 32 bit words to the exor of the one previous with * the one four words previous */ expanded_key->round[i].v32[1] = expanded_key->round[i].v32[0] ^ expanded_key->round[i - 1].v32[1]; expanded_key->round[i].v32[2] = expanded_key->round[i].v32[1] ^ expanded_key->round[i - 1].v32[2]; expanded_key->round[i].v32[3] = expanded_key->round[i].v32[2] ^ expanded_key->round[i - 1].v32[3]; #if 0 debug_print2(srtp_mod_aes_icm, "expanded key[%d]: %s", i, v128_hex_string(&expanded_key->round[i])); #endif /* modify round constant */ rc = gf2_8_shift(rc); } } static void aes_256_expand_encryption_key (const unsigned char *key, srtp_aes_expanded_key_t *expanded_key) { int i; uint8_t rc; /* initialize round constant */ rc = 1; expanded_key->num_rounds = 14; v128_copy_octet_string(&expanded_key->round[0], key); v128_copy_octet_string(&expanded_key->round[1], key + 16); #if 0 debug_print(srtp_mod_aes_icm, "expanded key[0]: %s", v128_hex_string(&expanded_key->round[0])); debug_print(srtp_mod_aes_icm, "expanded key[1]: %s", v128_hex_string(&expanded_key->round[1])); #endif /* loop over rest of round keys */ for (i = 2; i < 15; i++) { /* munge first word of round key */ if ((i & 1) == 0) { expanded_key->round[i].v8[0] = aes_sbox[expanded_key->round[i - 1].v8[13]] ^ rc; expanded_key->round[i].v8[1] = aes_sbox[expanded_key->round[i - 1].v8[14]]; expanded_key->round[i].v8[2] = aes_sbox[expanded_key->round[i - 1].v8[15]]; expanded_key->round[i].v8[3] = aes_sbox[expanded_key->round[i - 1].v8[12]]; /* modify round constant */ rc = gf2_8_shift(rc); }else { expanded_key->round[i].v8[0] = aes_sbox[expanded_key->round[i - 1].v8[12]]; expanded_key->round[i].v8[1] = aes_sbox[expanded_key->round[i - 1].v8[13]]; expanded_key->round[i].v8[2] = aes_sbox[expanded_key->round[i - 1].v8[14]]; expanded_key->round[i].v8[3] = aes_sbox[expanded_key->round[i - 1].v8[15]]; } expanded_key->round[i].v32[0] ^= expanded_key->round[i - 2].v32[0]; /* set remaining 32 bit words to the exor of the one previous with * the one eight words previous */ expanded_key->round[i].v32[1] = expanded_key->round[i].v32[0] ^ expanded_key->round[i - 2].v32[1]; expanded_key->round[i].v32[2] = expanded_key->round[i].v32[1] ^ expanded_key->round[i - 2].v32[2]; expanded_key->round[i].v32[3] = expanded_key->round[i].v32[2] ^ expanded_key->round[i - 2].v32[3]; #if 0 debug_print2(srtp_mod_aes_icm, "expanded key[%d]: %s", i, v128_hex_string(&expanded_key->round[i])); #endif } } srtp_err_status_t srtp_aes_expand_encryption_key (const uint8_t *key, int key_len, srtp_aes_expanded_key_t *expanded_key) { if (key_len == 16) { aes_128_expand_encryption_key(key, expanded_key); return srtp_err_status_ok; }else if (key_len == 24) { /* AES-192 not yet supported */ return srtp_err_status_bad_param; }else if (key_len == 32) { aes_256_expand_encryption_key(key, expanded_key); return srtp_err_status_ok; }else { return srtp_err_status_bad_param; } } srtp_err_status_t srtp_aes_expand_decryption_key (const uint8_t *key, int key_len, srtp_aes_expanded_key_t *expanded_key) { int i; srtp_err_status_t status; int num_rounds = expanded_key->num_rounds; status = srtp_aes_expand_encryption_key(key, key_len, expanded_key); if (status) { return status; } /* invert the order of the round keys */ for (i = 0; i < num_rounds / 2; i++) { v128_t tmp; v128_copy(&tmp, &expanded_key->round[num_rounds - i]); v128_copy(&expanded_key->round[num_rounds - i], &expanded_key->round[i]); v128_copy(&expanded_key->round[i], &tmp); } /* * apply the inverse mixColumn transform to the round keys (except * for the first and the last) * * mixColumn is implemented by using the tables U0, U1, U2, U3, * followed by the T4 table (which cancels out the use of the sbox * in the U-tables) */ for (i = 1; i < num_rounds; i++) { #ifdef CPU_RISC uint32_t tmp; #ifdef WORDS_BIGENDIAN tmp = expanded_key->round[i].v32[0]; expanded_key->round[i].v32[0] = U0[T4[(tmp >> 24) ] & 0xff] ^ U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ U3[T4[(tmp) & 0xff] & 0xff]; tmp = expanded_key->round[i].v32[1]; expanded_key->round[i].v32[1] = U0[T4[(tmp >> 24) ] & 0xff] ^ U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ U3[T4[(tmp) & 0xff] & 0xff]; tmp = expanded_key->round[i].v32[2]; expanded_key->round[i].v32[2] = U0[T4[(tmp >> 24) ] & 0xff] ^ U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ U3[T4[(tmp) & 0xff] & 0xff]; tmp = expanded_key->round[i].v32[3]; expanded_key->round[i].v32[3] = U0[T4[(tmp >> 24) ] & 0xff] ^ U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ U3[T4[(tmp) & 0xff] & 0xff]; #else tmp = expanded_key->round[i].v32[0]; expanded_key->round[i].v32[0] = U3[T4[(tmp >> 24) ] & 0xff] ^ U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ U0[T4[(tmp) & 0xff] & 0xff]; tmp = expanded_key->round[i].v32[1]; expanded_key->round[i].v32[1] = U3[T4[(tmp >> 24) ] & 0xff] ^ U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ U0[T4[(tmp) & 0xff] & 0xff]; tmp = expanded_key->round[i].v32[2]; expanded_key->round[i].v32[2] = U3[T4[(tmp >> 24) ] & 0xff] ^ U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ U0[T4[(tmp) & 0xff] & 0xff]; tmp = expanded_key->round[i].v32[3]; expanded_key->round[i].v32[3] = U3[T4[(tmp >> 24) ] & 0xff] ^ U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ U0[T4[(tmp) & 0xff] & 0xff]; #endif /* WORDS_BIGENDIAN */ #else /* assume CPU_CISC */ uint32_t c0, c1, c2, c3; c0 = U0[aes_sbox[expanded_key->round[i].v8[0]]] ^ U1[aes_sbox[expanded_key->round[i].v8[1]]] ^ U2[aes_sbox[expanded_key->round[i].v8[2]]] ^ U3[aes_sbox[expanded_key->round[i].v8[3]]]; c1 = U0[aes_sbox[expanded_key->round[i].v8[4]]] ^ U1[aes_sbox[expanded_key->round[i].v8[5]]] ^ U2[aes_sbox[expanded_key->round[i].v8[6]]] ^ U3[aes_sbox[expanded_key->round[i].v8[7]]]; c2 = U0[aes_sbox[expanded_key->round[i].v8[8]]] ^ U1[aes_sbox[expanded_key->round[i].v8[9]]] ^ U2[aes_sbox[expanded_key->round[i].v8[10]]] ^ U3[aes_sbox[expanded_key->round[i].v8[11]]]; c3 = U0[aes_sbox[expanded_key->round[i].v8[12]]] ^ U1[aes_sbox[expanded_key->round[i].v8[13]]] ^ U2[aes_sbox[expanded_key->round[i].v8[14]]] ^ U3[aes_sbox[expanded_key->round[i].v8[15]]]; expanded_key->round[i].v32[0] = c0; expanded_key->round[i].v32[1] = c1; expanded_key->round[i].v32[2] = c2; expanded_key->round[i].v32[3] = c3; #endif } return srtp_err_status_ok; } #ifdef CPU_CISC static inline void aes_round (v128_t *state, const v128_t *round_key) { uint32_t column0, column1, column2, column3; /* compute the columns of the output square in terms of the octets of state, using the tables T0, T1, T2, T3 */ column0 = T0[state->v8[0]] ^ T1[state->v8[5]] ^ T2[state->v8[10]] ^ T3[state->v8[15]]; column1 = T0[state->v8[4]] ^ T1[state->v8[9]] ^ T2[state->v8[14]] ^ T3[state->v8[3]]; column2 = T0[state->v8[8]] ^ T1[state->v8[13]] ^ T2[state->v8[2]] ^ T3[state->v8[7]]; column3 = T0[state->v8[12]] ^ T1[state->v8[1]] ^ T2[state->v8[6]] ^ T3[state->v8[11]]; state->v32[0] = column0 ^ round_key->v32[0]; state->v32[1] = column1 ^ round_key->v32[1]; state->v32[2] = column2 ^ round_key->v32[2]; state->v32[3] = column3 ^ round_key->v32[3]; } static inline void aes_inv_round (v128_t *state, const v128_t *round_key) { uint32_t column0, column1, column2, column3; /* compute the columns of the output square in terms of the octets of state, using the tables U0, U1, U2, U3 */ column0 = U0[state->v8[0]] ^ U1[state->v8[13]] ^ U2[state->v8[10]] ^ U3[state->v8[7]]; column1 = U0[state->v8[4]] ^ U1[state->v8[1]] ^ U2[state->v8[14]] ^ U3[state->v8[11]]; column2 = U0[state->v8[8]] ^ U1[state->v8[5]] ^ U2[state->v8[2]] ^ U3[state->v8[15]]; column3 = U0[state->v8[12]] ^ U1[state->v8[9]] ^ U2[state->v8[6]] ^ U3[state->v8[3]]; state->v32[0] = column0 ^ round_key->v32[0]; state->v32[1] = column1 ^ round_key->v32[1]; state->v32[2] = column2 ^ round_key->v32[2]; state->v32[3] = column3 ^ round_key->v32[3]; } static inline void aes_final_round (v128_t *state, const v128_t *round_key) { uint8_t tmp; /* byte substitutions and row shifts */ /* first row - no shift */ state->v8[0] = aes_sbox[state->v8[0]]; state->v8[4] = aes_sbox[state->v8[4]]; state->v8[8] = aes_sbox[state->v8[8]]; state->v8[12] = aes_sbox[state->v8[12]]; /* second row - shift one left */ tmp = aes_sbox[state->v8[1]]; state->v8[1] = aes_sbox[state->v8[5]]; state->v8[5] = aes_sbox[state->v8[9]]; state->v8[9] = aes_sbox[state->v8[13]]; state->v8[13] = tmp; /* third row - shift two left */ tmp = aes_sbox[state->v8[10]]; state->v8[10] = aes_sbox[state->v8[2]]; state->v8[2] = tmp; tmp = aes_sbox[state->v8[14]]; state->v8[14] = aes_sbox[state->v8[6]]; state->v8[6] = tmp; /* fourth row - shift three left */ tmp = aes_sbox[state->v8[15]]; state->v8[15] = aes_sbox[state->v8[11]]; state->v8[11] = aes_sbox[state->v8[7]]; state->v8[7] = aes_sbox[state->v8[3]]; state->v8[3] = tmp; v128_xor_eq(state, round_key); } static inline void aes_inv_final_round (v128_t *state, const v128_t *round_key) { uint8_t tmp; /* byte substitutions and row shifts */ /* first row - no shift */ state->v8[0] = aes_inv_sbox[state->v8[0]]; state->v8[4] = aes_inv_sbox[state->v8[4]]; state->v8[8] = aes_inv_sbox[state->v8[8]]; state->v8[12] = aes_inv_sbox[state->v8[12]]; /* second row - shift one right */ tmp = aes_inv_sbox[state->v8[13]]; state->v8[13] = aes_inv_sbox[state->v8[9]]; state->v8[9] = aes_inv_sbox[state->v8[5]]; state->v8[5] = aes_inv_sbox[state->v8[1]]; state->v8[1] = tmp; /* third row - shift two right */ tmp = aes_inv_sbox[state->v8[2]]; state->v8[2] = aes_inv_sbox[state->v8[10]]; state->v8[10] = tmp; tmp = aes_inv_sbox[state->v8[6]]; state->v8[6] = aes_inv_sbox[state->v8[14]]; state->v8[14] = tmp; /* fourth row - shift three right */ tmp = aes_inv_sbox[state->v8[3]]; state->v8[3] = aes_inv_sbox[state->v8[7]]; state->v8[7] = aes_inv_sbox[state->v8[11]]; state->v8[11] = aes_inv_sbox[state->v8[15]]; state->v8[15] = tmp; v128_xor_eq(state, round_key); } #elif CPU_RISC static inline void aes_round (v128_t *state, const v128_t *round_key) { uint32_t column0, column1, column2, column3; /* compute the columns of the output square in terms of the octets of state, using the tables T0, T1, T2, T3 */ #ifdef WORDS_BIGENDIAN column0 = T0[state->v32[0] >> 24] ^ T1[(state->v32[1] >> 16) & 0xff] ^ T2[(state->v32[2] >> 8) & 0xff] ^ T3[state->v32[3] & 0xff]; column1 = T0[state->v32[1] >> 24] ^ T1[(state->v32[2] >> 16) & 0xff] ^ T2[(state->v32[3] >> 8) & 0xff] ^ T3[state->v32[0] & 0xff]; column2 = T0[state->v32[2] >> 24] ^ T1[(state->v32[3] >> 16) & 0xff] ^ T2[(state->v32[0] >> 8) & 0xff] ^ T3[state->v32[1] & 0xff]; column3 = T0[state->v32[3] >> 24] ^ T1[(state->v32[0] >> 16) & 0xff] ^ T2[(state->v32[1] >> 8) & 0xff] ^ T3[state->v32[2] & 0xff]; #else column0 = T0[state->v32[0] & 0xff] ^ T1[(state->v32[1] >> 8) & 0xff] ^ T2[(state->v32[2] >> 16) & 0xff] ^ T3[state->v32[3] >> 24]; column1 = T0[state->v32[1] & 0xff] ^ T1[(state->v32[2] >> 8) & 0xff] ^ T2[(state->v32[3] >> 16) & 0xff] ^ T3[state->v32[0] >> 24]; column2 = T0[state->v32[2] & 0xff] ^ T1[(state->v32[3] >> 8) & 0xff] ^ T2[(state->v32[0] >> 16) & 0xff] ^ T3[state->v32[1] >> 24]; column3 = T0[state->v32[3] & 0xff] ^ T1[(state->v32[0] >> 8) & 0xff] ^ T2[(state->v32[1] >> 16) & 0xff] ^ T3[state->v32[2] >> 24]; #endif /* WORDS_BIGENDIAN */ state->v32[0] = column0 ^ round_key->v32[0]; state->v32[1] = column1 ^ round_key->v32[1]; state->v32[2] = column2 ^ round_key->v32[2]; state->v32[3] = column3 ^ round_key->v32[3]; } static inline void aes_inv_round (v128_t *state, const v128_t *round_key) { uint32_t column0, column1, column2, column3; /* compute the columns of the output square in terms of the octets of state, using the tables U0, U1, U2, U3 */ #ifdef WORDS_BIGENDIAN column0 = U0[state->v32[0] >> 24] ^ U1[(state->v32[3] >> 16) & 0xff] ^ U2[(state->v32[2] >> 8) & 0xff] ^ U3[state->v32[1] & 0xff]; column1 = U0[state->v32[1] >> 24] ^ U1[(state->v32[0] >> 16) & 0xff] ^ U2[(state->v32[3] >> 8) & 0xff] ^ U3[state->v32[2] & 0xff]; column2 = U0[state->v32[2] >> 24] ^ U1[(state->v32[1] >> 16) & 0xff] ^ U2[(state->v32[0] >> 8) & 0xff] ^ U3[state->v32[3] & 0xff]; column3 = U0[state->v32[3] >> 24] ^ U1[(state->v32[2] >> 16) & 0xff] ^ U2[(state->v32[1] >> 8) & 0xff] ^ U3[state->v32[0] & 0xff]; #else column0 = U0[state->v32[0] & 0xff] ^ U1[(state->v32[3] >> 8) & 0xff] ^ U2[(state->v32[2] >> 16) & 0xff] ^ U3[(state->v32[1] >> 24) & 0xff]; column1 = U0[state->v32[1] & 0xff] ^ U1[(state->v32[0] >> 8) & 0xff] ^ U2[(state->v32[3] >> 16) & 0xff] ^ U3[(state->v32[2] >> 24) & 0xff]; column2 = U0[state->v32[2] & 0xff] ^ U1[(state->v32[1] >> 8) & 0xff] ^ U2[(state->v32[0] >> 16) & 0xff] ^ U3[(state->v32[3] >> 24) & 0xff]; column3 = U0[state->v32[3] & 0xff] ^ U1[(state->v32[2] >> 8) & 0xff] ^ U2[(state->v32[1] >> 16) & 0xff] ^ U3[(state->v32[0] >> 24) & 0xff]; #endif /* WORDS_BIGENDIAN */ state->v32[0] = column0 ^ round_key->v32[0]; state->v32[1] = column1 ^ round_key->v32[1]; state->v32[2] = column2 ^ round_key->v32[2]; state->v32[3] = column3 ^ round_key->v32[3]; } static inline void aes_final_round (v128_t *state, const v128_t *round_key) { uint32_t tmp0, tmp1, tmp2, tmp3; #ifdef WORDS_BIGENDIAN tmp0 = (T4[(state->v32[0] >> 24)] & 0xff000000) ^ (T4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ round_key->v32[0]; tmp1 = (T4[(state->v32[1] >> 24)] & 0xff000000) ^ (T4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ round_key->v32[1]; tmp2 = (T4[(state->v32[2] >> 24)] & 0xff000000) ^ (T4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ round_key->v32[2]; tmp3 = (T4[(state->v32[3] >> 24)] & 0xff000000) ^ (T4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ round_key->v32[3]; #else tmp0 = (T4[(state->v32[3] >> 24)] & 0xff000000) ^ (T4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ round_key->v32[0]; tmp1 = (T4[(state->v32[0] >> 24)] & 0xff000000) ^ (T4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ round_key->v32[1]; tmp2 = (T4[(state->v32[1] >> 24)] & 0xff000000) ^ (T4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ round_key->v32[2]; tmp3 = (T4[(state->v32[2] >> 24)] & 0xff000000) ^ (T4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ (T4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ (T4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ round_key->v32[3]; #endif /* WORDS_BIGENDIAN */ state->v32[0] = tmp0; state->v32[1] = tmp1; state->v32[2] = tmp2; state->v32[3] = tmp3; } static inline void aes_inv_final_round (v128_t *state, const v128_t *round_key) { uint32_t tmp0, tmp1, tmp2, tmp3; #ifdef WORDS_BIGENDIAN tmp0 = (U4[(state->v32[0] >> 24)] & 0xff000000) ^ (U4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ round_key->v32[0]; tmp1 = (U4[(state->v32[1] >> 24)] & 0xff000000) ^ (U4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ round_key->v32[1]; tmp2 = (U4[(state->v32[2] >> 24)] & 0xff000000) ^ (U4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ round_key->v32[2]; tmp3 = (U4[(state->v32[3] >> 24)] & 0xff000000) ^ (U4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ round_key->v32[3]; #else tmp0 = (U4[(state->v32[1] >> 24)] & 0xff000000) ^ (U4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ round_key->v32[0]; tmp1 = (U4[(state->v32[2] >> 24)] & 0xff000000) ^ (U4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ round_key->v32[1]; tmp2 = (U4[(state->v32[3] >> 24)] & 0xff000000) ^ (U4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ round_key->v32[2]; tmp3 = (U4[(state->v32[0] >> 24)] & 0xff000000) ^ (U4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ (U4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ (U4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ round_key->v32[3]; #endif /* WORDS_BIGENDIAN */ state->v32[0] = tmp0; state->v32[1] = tmp1; state->v32[2] = tmp2; state->v32[3] = tmp3; } #elif CPU_16 /* assume 16-bit word size on processor */ static inline void aes_round (v128_t *state, const v128_t *round_key) { uint32_t column0, column1, column2, column3; uint16_t c /* compute the columns of the output square in terms of the octets of state, using the tables T0, T1, T2, T3 */ column0 = T0[state->v8[0]] ^ T1[state->v8[5]] ^ T2[state->v8[10]] ^ T3[state->v8[15]]; column1 = T0[state->v8[4]] ^ T1[state->v8[9]] ^ T2[state->v8[14]] ^ T3[state->v8[3]]; column2 = T0[state->v8[8]] ^ T1[state->v8[13]] ^ T2[state->v8[2]] ^ T3[state->v8[7]]; column3 = T0[state->v8[12]] ^ T1[state->v8[1]] ^ T2[state->v8[6]] ^ T3[state->v8[11]]; state->v32[0] = column0 ^ round_key->v32[0]; state->v32[1] = column1 ^ round_key->v32[1]; state->v32[2] = column2 ^ round_key->v32[2]; state->v32[3] = column3 ^ round_key->v32[3]; } static inline void aes_inv_round (v128_t *state, const v128_t *round_key) { uint32_t column0, column1, column2, column3; /* compute the columns of the output square in terms of the octets of state, using the tables U0, U1, U2, U3 */ column0 = U0[state->v8[0]] ^ U1[state->v8[5]] ^ U2[state->v8[10]] ^ U3[state->v8[15]]; column1 = U0[state->v8[4]] ^ U1[state->v8[9]] ^ U2[state->v8[14]] ^ U3[state->v8[3]]; column2 = U0[state->v8[8]] ^ U1[state->v8[13]] ^ U2[state->v8[2]] ^ U3[state->v8[7]]; column3 = U0[state->v8[12]] ^ U1[state->v8[1]] ^ U2[state->v8[6]] ^ U3[state->v8[11]]; state->v32[0] = column0 ^ round_key->v32[0]; state->v32[1] = column1 ^ round_key->v32[1]; state->v32[2] = column2 ^ round_key->v32[2]; state->v32[3] = column3 ^ round_key->v32[3]; } static inline void aes_final_round (v128_t *state, const v128_t *round_key) { uint8_t tmp; /* byte substitutions and row shifts */ /* first row - no shift */ state->v8[0] = aes_sbox[state->v8[0]]; state->v8[4] = aes_sbox[state->v8[4]]; state->v8[8] = aes_sbox[state->v8[8]]; state->v8[12] = aes_sbox[state->v8[12]]; /* second row - shift one left */ tmp = aes_sbox[state->v8[1]]; state->v8[1] = aes_sbox[state->v8[5]]; state->v8[5] = aes_sbox[state->v8[9]]; state->v8[9] = aes_sbox[state->v8[13]]; state->v8[13] = tmp; /* third row - shift two left */ tmp = aes_sbox[state->v8[10]]; state->v8[10] = aes_sbox[state->v8[2]]; state->v8[2] = tmp; tmp = aes_sbox[state->v8[14]]; state->v8[14] = aes_sbox[state->v8[6]]; state->v8[6] = tmp; /* fourth row - shift three left */ tmp = aes_sbox[state->v8[15]]; state->v8[15] = aes_sbox[state->v8[11]]; state->v8[11] = aes_sbox[state->v8[7]]; state->v8[7] = aes_sbox[state->v8[3]]; state->v8[3] = tmp; v128_xor_eq(state, round_key); } static inline void aes_inv_final_round (v128_t *state, const v128_t *round_key) { uint8_t tmp; /* byte substitutions and row shifts */ /* first row - no shift */ state->v8[0] = aes_inv_sbox[state->v8[0]]; state->v8[4] = aes_inv_sbox[state->v8[4]]; state->v8[8] = aes_inv_sbox[state->v8[8]]; state->v8[12] = aes_inv_sbox[state->v8[12]]; /* second row - shift one left */ tmp = aes_inv_sbox[state->v8[1]]; state->v8[1] = aes_inv_sbox[state->v8[5]]; state->v8[5] = aes_inv_sbox[state->v8[9]]; state->v8[9] = aes_inv_sbox[state->v8[13]]; state->v8[13] = tmp; /* third row - shift two left */ tmp = aes_inv_sbox[state->v8[10]]; state->v8[10] = aes_inv_sbox[state->v8[2]]; state->v8[2] = tmp; tmp = aes_inv_sbox[state->v8[14]]; state->v8[14] = aes_inv_sbox[state->v8[6]]; state->v8[6] = tmp; /* fourth row - shift three left */ tmp = aes_inv_sbox[state->v8[15]]; state->v8[15] = aes_inv_sbox[state->v8[11]]; state->v8[11] = aes_inv_sbox[state->v8[7]]; state->v8[7] = aes_inv_sbox[state->v8[3]]; state->v8[3] = tmp; v128_xor_eq(state, round_key); } #endif /* CPU type */ void srtp_aes_encrypt (v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key) { /* add in the subkey */ v128_xor_eq(plaintext, &exp_key->round[0]); /* now do the rounds */ aes_round(plaintext, &exp_key->round[1]); aes_round(plaintext, &exp_key->round[2]); aes_round(plaintext, &exp_key->round[3]); aes_round(plaintext, &exp_key->round[4]); aes_round(plaintext, &exp_key->round[5]); aes_round(plaintext, &exp_key->round[6]); aes_round(plaintext, &exp_key->round[7]); aes_round(plaintext, &exp_key->round[8]); aes_round(plaintext, &exp_key->round[9]); if (exp_key->num_rounds == 10) { aes_final_round(plaintext, &exp_key->round[10]); }else if (exp_key->num_rounds == 12) { aes_round(plaintext, &exp_key->round[10]); aes_round(plaintext, &exp_key->round[11]); aes_final_round(plaintext, &exp_key->round[12]); }else if (exp_key->num_rounds == 14) { aes_round(plaintext, &exp_key->round[10]); aes_round(plaintext, &exp_key->round[11]); aes_round(plaintext, &exp_key->round[12]); aes_round(plaintext, &exp_key->round[13]); aes_final_round(plaintext, &exp_key->round[14]); } } void srtp_aes_decrypt (v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key) { /* add in the subkey */ v128_xor_eq(plaintext, &exp_key->round[0]); /* now do the rounds */ aes_inv_round(plaintext, &exp_key->round[1]); aes_inv_round(plaintext, &exp_key->round[2]); aes_inv_round(plaintext, &exp_key->round[3]); aes_inv_round(plaintext, &exp_key->round[4]); aes_inv_round(plaintext, &exp_key->round[5]); aes_inv_round(plaintext, &exp_key->round[6]); aes_inv_round(plaintext, &exp_key->round[7]); aes_inv_round(plaintext, &exp_key->round[8]); aes_inv_round(plaintext, &exp_key->round[9]); if (exp_key->num_rounds == 10) { aes_inv_final_round(plaintext, &exp_key->round[10]); }else if (exp_key->num_rounds == 12) { aes_inv_round(plaintext, &exp_key->round[10]); aes_inv_round(plaintext, &exp_key->round[11]); aes_inv_final_round(plaintext, &exp_key->round[12]); }else if (exp_key->num_rounds == 14) { aes_inv_round(plaintext, &exp_key->round[10]); aes_inv_round(plaintext, &exp_key->round[11]); aes_inv_round(plaintext, &exp_key->round[12]); aes_inv_round(plaintext, &exp_key->round[13]); aes_inv_final_round(plaintext, &exp_key->round[14]); } } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/aes_gcm_ossl.c000066400000000000000000000445121304141034500251550ustar00rootroot00000000000000/* * aes_gcm_ossl.c * * AES Galois Counter Mode * * John A. Foley * Cisco Systems, Inc. * */ /* * * Copyright (c) 2013, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include #include "aes_icm_ossl.h" #include "aes_gcm_ossl.h" #include "alloc.h" #include "err.h" /* for srtp_debug */ #include "crypto_types.h" srtp_debug_module_t srtp_mod_aes_gcm = { 0, /* debugging is off by default */ "aes gcm" /* printable module name */ }; /* * The following are the global singleton instances for the * 128-bit and 256-bit GCM ciphers. */ extern const srtp_cipher_type_t srtp_aes_gcm_128_openssl; extern const srtp_cipher_type_t srtp_aes_gcm_256_openssl; /* * For now we only support 8 and 16 octet tags. The spec allows for * optional 12 byte tag, which may be supported in the future. */ #define GCM_AUTH_TAG_LEN 16 #define GCM_AUTH_TAG_LEN_8 8 /* * This function allocates a new instance of this crypto engine. * The key_len parameter should be one of 28 or 44 for * AES-128-GCM or AES-256-GCM respectively. Note that the * key length includes the 14 byte salt value that is used when * initializing the KDF. */ static srtp_err_status_t srtp_aes_gcm_openssl_alloc (srtp_cipher_t **c, int key_len, int tlen) { srtp_aes_gcm_ctx_t *gcm; debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d", key_len); debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen); /* * Verify the key_len is valid for one of: AES-128/256 */ if (key_len != SRTP_AES_128_GCM_KEYSIZE_WSALT && key_len != SRTP_AES_256_GCM_KEYSIZE_WSALT) { return (srtp_err_status_bad_param); } if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) { return (srtp_err_status_bad_param); } /* allocate memory a cipher of type aes_gcm */ *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); if (*c == NULL) { return (srtp_err_status_alloc_fail); } memset(*c, 0x0, sizeof(srtp_cipher_t)); gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t)); if (gcm == NULL) { srtp_crypto_free(*c); *c = NULL; return (srtp_err_status_alloc_fail); } memset(gcm, 0x0, sizeof(srtp_aes_gcm_ctx_t)); gcm->ctx = EVP_CIPHER_CTX_new(); if (gcm->ctx == NULL) { srtp_crypto_free(gcm); srtp_crypto_free(*c); *c = NULL; return srtp_err_status_alloc_fail; } /* set pointers */ (*c)->state = gcm; /* setup cipher attributes */ switch (key_len) { case SRTP_AES_128_GCM_KEYSIZE_WSALT: (*c)->type = &srtp_aes_gcm_128_openssl; (*c)->algorithm = SRTP_AES_128_GCM; gcm->key_size = SRTP_AES_128_KEYSIZE; gcm->tag_len = tlen; break; case SRTP_AES_256_GCM_KEYSIZE_WSALT: (*c)->type = &srtp_aes_gcm_256_openssl; (*c)->algorithm = SRTP_AES_256_GCM; gcm->key_size = SRTP_AES_256_KEYSIZE; gcm->tag_len = tlen; break; } /* set key size */ (*c)->key_len = key_len; return (srtp_err_status_ok); } /* * This function deallocates a GCM session */ static srtp_err_status_t srtp_aes_gcm_openssl_dealloc (srtp_cipher_t *c) { srtp_aes_gcm_ctx_t *ctx; ctx = (srtp_aes_gcm_ctx_t*)c->state; if (ctx) { EVP_CIPHER_CTX_free(ctx->ctx); /* zeroize the key material */ octet_string_set_to_zero((uint8_t*)ctx, sizeof(srtp_aes_gcm_ctx_t)); srtp_crypto_free(ctx); } /* free memory */ srtp_crypto_free(c); return (srtp_err_status_ok); } /* * aes_gcm_openssl_context_init(...) initializes the aes_gcm_context * using the value in key[]. * * the key is the secret key */ static srtp_err_status_t srtp_aes_gcm_openssl_context_init (void* cv, const uint8_t *key) { srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; const EVP_CIPHER *evp; c->dir = srtp_direction_any; debug_print(srtp_mod_aes_gcm, "key: %s", srtp_octet_string_hex_string(key, c->key_size)); switch (c->key_size) { case SRTP_AES_256_KEYSIZE: evp = EVP_aes_256_gcm(); break; case SRTP_AES_128_KEYSIZE: evp = EVP_aes_128_gcm(); break; default: return (srtp_err_status_bad_param); break; } if (!EVP_CipherInit_ex(c->ctx, evp, NULL, key, NULL, 0)) { return (srtp_err_status_init_fail); } return (srtp_err_status_ok); } /* * aes_gcm_openssl_set_iv(c, iv) sets the counter value to the exor of iv with * the offset */ static srtp_err_status_t srtp_aes_gcm_openssl_set_iv (void *cv, uint8_t *iv, srtp_cipher_direction_t direction) { srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; if (direction != srtp_direction_encrypt && direction != srtp_direction_decrypt) { return (srtp_err_status_bad_param); } c->dir = direction; debug_print(srtp_mod_aes_gcm, "setting iv: %s", v128_hex_string((v128_t*)iv)); if (!EVP_CipherInit_ex(c->ctx, NULL, NULL, NULL, NULL, (c->dir == srtp_direction_encrypt ? 1 : 0))) { return (srtp_err_status_init_fail); } /* set IV len and the IV value, the followiong 3 calls are required */ if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) { return (srtp_err_status_init_fail); } if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IV_FIXED, -1, (void*)iv)) { return (srtp_err_status_init_fail); } if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_IV_GEN, 0, (void*)iv)) { return (srtp_err_status_init_fail); } return (srtp_err_status_ok); } /* * This function processes the AAD * * Parameters: * c Crypto context * aad Additional data to process for AEAD cipher suites * aad_len length of aad buffer */ static srtp_err_status_t srtp_aes_gcm_openssl_set_aad (void *cv, const uint8_t *aad, uint32_t aad_len) { srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; int rv; /* * Set dummy tag, OpenSSL requires the Tag to be set before * processing AAD */ /* * OpenSSL never write to address pointed by the last parameter of * EVP_CIPHER_CTX_ctrl while EVP_CTRL_GCM_SET_TAG (in reality, * OpenSSL copy its content to the context), so we can make * aad read-only in this function and all its wrappers. */ unsigned char dummy_tag[GCM_AUTH_TAG_LEN]; memset(dummy_tag, 0x0, GCM_AUTH_TAG_LEN); EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, &dummy_tag); rv = EVP_Cipher(c->ctx, NULL, aad, aad_len); if (rv != aad_len) { return (srtp_err_status_algo_fail); } else { return (srtp_err_status_ok); } } /* * This function encrypts a buffer using AES GCM mode * * Parameters: * c Crypto context * buf data to encrypt * enc_len length of encrypt buffer */ static srtp_err_status_t srtp_aes_gcm_openssl_encrypt (void *cv, unsigned char *buf, unsigned int *enc_len) { srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) { return (srtp_err_status_bad_param); } /* * Encrypt the data */ EVP_Cipher(c->ctx, buf, buf, *enc_len); return (srtp_err_status_ok); } /* * This function calculates and returns the GCM tag for a given context. * This should be called after encrypting the data. The *len value * is increased by the tag size. The caller must ensure that *buf has * enough room to accept the appended tag. * * Parameters: * c Crypto context * buf data to encrypt * len length of encrypt buffer */ static srtp_err_status_t srtp_aes_gcm_openssl_get_tag (void *cv, uint8_t *buf, uint32_t *len) { srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; /* * Calculate the tag */ EVP_Cipher(c->ctx, NULL, NULL, 0); /* * Retreive the tag */ EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_GET_TAG, c->tag_len, buf); /* * Increase encryption length by desired tag size */ *len = c->tag_len; return (srtp_err_status_ok); } /* * This function decrypts a buffer using AES GCM mode * * Parameters: * c Crypto context * buf data to encrypt * enc_len length of encrypt buffer */ static srtp_err_status_t srtp_aes_gcm_openssl_decrypt (void *cv, unsigned char *buf, unsigned int *enc_len) { srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) { return (srtp_err_status_bad_param); } /* * Set the tag before decrypting */ EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, buf + (*enc_len - c->tag_len)); EVP_Cipher(c->ctx, buf, buf, *enc_len - c->tag_len); /* * Check the tag */ if (EVP_Cipher(c->ctx, NULL, NULL, 0)) { return (srtp_err_status_auth_fail); } /* * Reduce the buffer size by the tag length since the tag * is not part of the original payload */ *enc_len -= c->tag_len; return (srtp_err_status_ok); } /* * Name of this crypto engine */ static const char srtp_aes_gcm_128_openssl_description[] = "AES-128 GCM using openssl"; static const char srtp_aes_gcm_256_openssl_description[] = "AES-256 GCM using openssl"; /* * KAT values for AES self-test. These * values we're derived from independent test code * using OpenSSL. */ static const uint8_t srtp_aes_gcm_test_case_0_key[SRTP_AES_128_GCM_KEYSIZE_WSALT] = { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, }; static uint8_t srtp_aes_gcm_test_case_0_iv[12] = { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, 0xde, 0xca, 0xf8, 0x88 }; static const uint8_t srtp_aes_gcm_test_case_0_plaintext[60] = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, 0xba, 0x63, 0x7b, 0x39 }; static const uint8_t srtp_aes_gcm_test_case_0_aad[20] = { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xab, 0xad, 0xda, 0xd2 }; static const uint8_t srtp_aes_gcm_test_case_0_ciphertext[76] = { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24, 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c, 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0, 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e, 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c, 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05, 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97, 0x3d, 0x58, 0xe0, 0x91, /* the last 16 bytes are the tag */ 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb, 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47, }; static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0a = { SRTP_AES_128_GCM_KEYSIZE_WSALT, /* octets in key */ srtp_aes_gcm_test_case_0_key, /* key */ srtp_aes_gcm_test_case_0_iv, /* packet index */ 60, /* octets in plaintext */ srtp_aes_gcm_test_case_0_plaintext, /* plaintext */ 68, /* octets in ciphertext */ srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */ 20, /* octets in AAD */ srtp_aes_gcm_test_case_0_aad, /* AAD */ GCM_AUTH_TAG_LEN_8, NULL /* pointer to next testcase */ }; static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0 = { SRTP_AES_128_GCM_KEYSIZE_WSALT, /* octets in key */ srtp_aes_gcm_test_case_0_key, /* key */ srtp_aes_gcm_test_case_0_iv, /* packet index */ 60, /* octets in plaintext */ srtp_aes_gcm_test_case_0_plaintext, /* plaintext */ 76, /* octets in ciphertext */ srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */ 20, /* octets in AAD */ srtp_aes_gcm_test_case_0_aad, /* AAD */ GCM_AUTH_TAG_LEN, &srtp_aes_gcm_test_case_0a /* pointer to next testcase */ }; static const uint8_t srtp_aes_gcm_test_case_1_key[SRTP_AES_256_GCM_KEYSIZE_WSALT] = { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, 0xa5, 0x59, 0x09, 0xc5, 0x54, 0x66, 0x93, 0x1c, 0xaf, 0xf5, 0x26, 0x9a, 0x21, 0xd5, 0x14, 0xb2, 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, }; static uint8_t srtp_aes_gcm_test_case_1_iv[12] = { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, 0xde, 0xca, 0xf8, 0x88 }; static const uint8_t srtp_aes_gcm_test_case_1_plaintext[60] = { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, 0xba, 0x63, 0x7b, 0x39 }; static const uint8_t srtp_aes_gcm_test_case_1_aad[20] = { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xab, 0xad, 0xda, 0xd2 }; static const uint8_t srtp_aes_gcm_test_case_1_ciphertext[76] = { 0x0b, 0x11, 0xcf, 0xaf, 0x68, 0x4d, 0xae, 0x46, 0xc7, 0x90, 0xb8, 0x8e, 0xb7, 0x6a, 0x76, 0x2a, 0x94, 0x82, 0xca, 0xab, 0x3e, 0x39, 0xd7, 0x86, 0x1b, 0xc7, 0x93, 0xed, 0x75, 0x7f, 0x23, 0x5a, 0xda, 0xfd, 0xd3, 0xe2, 0x0e, 0x80, 0x87, 0xa9, 0x6d, 0xd7, 0xe2, 0x6a, 0x7d, 0x5f, 0xb4, 0x80, 0xef, 0xef, 0xc5, 0x29, 0x12, 0xd1, 0xaa, 0x10, 0x09, 0xc9, 0x86, 0xc1, /* the last 16 bytes are the tag */ 0x45, 0xbc, 0x03, 0xe6, 0xe1, 0xac, 0x0a, 0x9f, 0x81, 0xcb, 0x8e, 0x5b, 0x46, 0x65, 0x63, 0x1d, }; static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1a = { SRTP_AES_256_GCM_KEYSIZE_WSALT, /* octets in key */ srtp_aes_gcm_test_case_1_key, /* key */ srtp_aes_gcm_test_case_1_iv, /* packet index */ 60, /* octets in plaintext */ srtp_aes_gcm_test_case_1_plaintext, /* plaintext */ 68, /* octets in ciphertext */ srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */ 20, /* octets in AAD */ srtp_aes_gcm_test_case_1_aad, /* AAD */ GCM_AUTH_TAG_LEN_8, NULL /* pointer to next testcase */ }; static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1 = { SRTP_AES_256_GCM_KEYSIZE_WSALT, /* octets in key */ srtp_aes_gcm_test_case_1_key, /* key */ srtp_aes_gcm_test_case_1_iv, /* packet index */ 60, /* octets in plaintext */ srtp_aes_gcm_test_case_1_plaintext, /* plaintext */ 76, /* octets in ciphertext */ srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */ 20, /* octets in AAD */ srtp_aes_gcm_test_case_1_aad, /* AAD */ GCM_AUTH_TAG_LEN, &srtp_aes_gcm_test_case_1a /* pointer to next testcase */ }; /* * This is the vector function table for this crypto engine. */ const srtp_cipher_type_t srtp_aes_gcm_128_openssl = { srtp_aes_gcm_openssl_alloc, srtp_aes_gcm_openssl_dealloc, srtp_aes_gcm_openssl_context_init, srtp_aes_gcm_openssl_set_aad, srtp_aes_gcm_openssl_encrypt, srtp_aes_gcm_openssl_decrypt, srtp_aes_gcm_openssl_set_iv, srtp_aes_gcm_openssl_get_tag, srtp_aes_gcm_128_openssl_description, &srtp_aes_gcm_test_case_0, SRTP_AES_128_GCM }; /* * This is the vector function table for this crypto engine. */ const srtp_cipher_type_t srtp_aes_gcm_256_openssl = { srtp_aes_gcm_openssl_alloc, srtp_aes_gcm_openssl_dealloc, srtp_aes_gcm_openssl_context_init, srtp_aes_gcm_openssl_set_aad, srtp_aes_gcm_openssl_encrypt, srtp_aes_gcm_openssl_decrypt, srtp_aes_gcm_openssl_set_iv, srtp_aes_gcm_openssl_get_tag, srtp_aes_gcm_256_openssl_description, &srtp_aes_gcm_test_case_1, SRTP_AES_256_GCM }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/aes_icm.c000066400000000000000000000416151304141034500241200ustar00rootroot00000000000000/* * aes_icm.c * * AES Integer Counter Mode * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #define ALIGN_32 0 #include "aes_icm.h" #include "alloc.h" srtp_debug_module_t srtp_mod_aes_icm = { 0, /* debugging is off by default */ "aes icm" /* printable module name */ }; /* * integer counter mode works as follows: * * 16 bits * <-----> * +------+------+------+------+------+------+------+------+ * | nonce | pakcet index | ctr |---+ * +------+------+------+------+------+------+------+------+ | * | * +------+------+------+------+------+------+------+------+ v * | salt |000000|->(+) * +------+------+------+------+------+------+------+------+ | * | * +---------+ * | encrypt | * +---------+ * | * +------+------+------+------+------+------+------+------+ | * | keystream block |<--+ * +------+------+------+------+------+------+------+------+ * * All fields are big-endian * * ctr is the block counter, which increments from zero for * each packet (16 bits wide) * * packet index is distinct for each packet (48 bits wide) * * nonce can be distinct across many uses of the same key, or * can be a fixed value per key, or can be per-packet randomness * (64 bits) * */ static srtp_err_status_t srtp_aes_icm_alloc_ismacryp (srtp_cipher_t **c, int key_len, int forIsmacryp) { extern const srtp_cipher_type_t srtp_aes_icm; srtp_aes_icm_ctx_t *icm; debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d", key_len); /* * Ismacryp, for example, uses 16 byte key + 8 byte * salt so this function is called with key_len = 24. * The check for key_len = 30/38/46 does not apply. Our usage * of aes functions with key_len = values other than 30 * has not broken anything. Don't know what would be the * effect of skipping this check for srtp in general. */ if (!(forIsmacryp && key_len > 16 && key_len < 30) && key_len != 30 && key_len != 38 && key_len != 46) { return srtp_err_status_bad_param; } /* allocate memory a cipher of type aes_icm */ *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); if (*c == NULL) { return srtp_err_status_alloc_fail; } memset(*c, 0x0, sizeof(srtp_cipher_t)); icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t)); if (icm == NULL) { srtp_crypto_free(*c); return srtp_err_status_alloc_fail; } memset(icm, 0x0, sizeof(srtp_aes_icm_ctx_t)); /* set pointers */ (*c)->state = icm; (*c)->type = &srtp_aes_icm; switch (key_len) { case 46: (*c)->algorithm = SRTP_AES_256_ICM; break; case 38: (*c)->algorithm = SRTP_AES_192_ICM; break; default: (*c)->algorithm = SRTP_AES_128_ICM; break; } /* set key size */ icm->key_size = key_len; (*c)->key_len = key_len; return srtp_err_status_ok; } static srtp_err_status_t srtp_aes_icm_alloc (srtp_cipher_t **c, int key_len, int forIsmacryp) { return srtp_aes_icm_alloc_ismacryp(c, key_len, 0); } static srtp_err_status_t srtp_aes_icm_dealloc (srtp_cipher_t *c) { srtp_aes_icm_ctx_t *ctx; if (c == NULL) { return srtp_err_status_bad_param; } ctx = (srtp_aes_icm_ctx_t *)c->state; if (ctx) { /* zeroize the key material */ octet_string_set_to_zero((uint8_t*)ctx, sizeof(srtp_aes_icm_ctx_t)); srtp_crypto_free(ctx); } /* free the cipher context */ srtp_crypto_free(c); return srtp_err_status_ok; } /* * aes_icm_context_init(...) initializes the aes_icm_context * using the value in key[]. * * the key is the secret key * * the salt is unpredictable (but not necessarily secret) data which * randomizes the starting point in the keystream */ static srtp_err_status_t srtp_aes_icm_context_init (void *cv, const uint8_t *key) { srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; srtp_err_status_t status; int base_key_len, copy_len; if (c->key_size > 16 && c->key_size < 30) { /* Ismacryp */ base_key_len = 16; } else if (c->key_size == 30 || c->key_size == 38 || c->key_size == 46) { base_key_len = c->key_size - 14; } else{ return srtp_err_status_bad_param; } /* * set counter and initial values to 'offset' value, being careful not to * go past the end of the key buffer */ v128_set_to_zero(&c->counter); v128_set_to_zero(&c->offset); copy_len = c->key_size - base_key_len; /* force last two octets of the offset to be left zero (for srtp compatibility) */ if (copy_len > 14) { copy_len = 14; } memcpy(&c->counter, key + base_key_len, copy_len); memcpy(&c->offset, key + base_key_len, copy_len); debug_print(srtp_mod_aes_icm, "key: %s", srtp_octet_string_hex_string(key, base_key_len)); debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset)); /* expand key */ status = srtp_aes_expand_encryption_key(key, base_key_len, &c->expanded_key); if (status) { v128_set_to_zero(&c->counter); v128_set_to_zero(&c->offset); return status; } /* indicate that the keystream_buffer is empty */ c->bytes_in_buffer = 0; return srtp_err_status_ok; } /* * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with * the offset */ static srtp_err_status_t srtp_aes_icm_set_iv (void *cv, uint8_t *iv, srtp_cipher_direction_t direction) { srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; v128_t nonce; /* set nonce (for alignment) */ v128_copy_octet_string(&nonce, iv); debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce)); v128_xor(&c->counter, &c->offset, &nonce); debug_print(srtp_mod_aes_icm, "set_counter: %s", v128_hex_string(&c->counter)); /* indicate that the keystream_buffer is empty */ c->bytes_in_buffer = 0; return srtp_err_status_ok; } /* * aes_icm_advance(...) refills the keystream_buffer and * advances the block index of the sicm_context forward by one * * this is an internal, hopefully inlined function */ static void srtp_aes_icm_advance_ismacryp (srtp_aes_icm_ctx_t *c, uint8_t forIsmacryp) { /* fill buffer with new keystream */ v128_copy(&c->keystream_buffer, &c->counter); srtp_aes_encrypt(&c->keystream_buffer, &c->expanded_key); c->bytes_in_buffer = sizeof(v128_t); debug_print(srtp_mod_aes_icm, "counter: %s", v128_hex_string(&c->counter)); debug_print(srtp_mod_aes_icm, "ciphertext: %s", v128_hex_string(&c->keystream_buffer)); /* clock counter forward */ if (forIsmacryp) { uint32_t temp; //alex's clock counter forward temp = ntohl(c->counter.v32[3]); ++temp; c->counter.v32[3] = htonl(temp); } else { if (!++(c->counter.v8[15])) { ++(c->counter.v8[14]); } } } /*e * icm_encrypt deals with the following cases: * * bytes_to_encr < bytes_in_buffer * - add keystream into data * * bytes_to_encr > bytes_in_buffer * - add keystream into data until keystream_buffer is depleted * - loop over blocks, filling keystream_buffer and then * adding keystream into data * - fill buffer then add in remaining (< 16) bytes of keystream */ static srtp_err_status_t srtp_aes_icm_encrypt_ismacryp (srtp_aes_icm_ctx_t *c, unsigned char *buf, unsigned int *enc_len, int forIsmacryp) { unsigned int bytes_to_encr = *enc_len; unsigned int i; uint32_t *b; /* check that there's enough segment left but not for ismacryp*/ if (!forIsmacryp && (bytes_to_encr + htons(c->counter.v16[7])) > 0xffff) { return srtp_err_status_terminus; } debug_print(srtp_mod_aes_icm, "block index: %d", htons(c->counter.v16[7])); if (bytes_to_encr <= (unsigned int)c->bytes_in_buffer) { /* deal with odd case of small bytes_to_encr */ for (i = (sizeof(v128_t) - c->bytes_in_buffer); i < (sizeof(v128_t) - c->bytes_in_buffer + bytes_to_encr); i++) { *buf++ ^= c->keystream_buffer.v8[i]; } c->bytes_in_buffer -= bytes_to_encr; /* return now to avoid the main loop */ return srtp_err_status_ok; } else { /* encrypt bytes until the remaining data is 16-byte aligned */ for (i = (sizeof(v128_t) - c->bytes_in_buffer); i < sizeof(v128_t); i++) { *buf++ ^= c->keystream_buffer.v8[i]; } bytes_to_encr -= c->bytes_in_buffer; c->bytes_in_buffer = 0; } /* now loop over entire 16-byte blocks of keystream */ for (i = 0; i < (bytes_to_encr / sizeof(v128_t)); i++) { /* fill buffer with new keystream */ srtp_aes_icm_advance_ismacryp(c, forIsmacryp); /* * add keystream into the data buffer (this would be a lot faster * if we could assume 32-bit alignment!) */ #if ALIGN_32 b = (uint32_t*)buf; *b++ ^= c->keystream_buffer.v32[0]; *b++ ^= c->keystream_buffer.v32[1]; *b++ ^= c->keystream_buffer.v32[2]; *b++ ^= c->keystream_buffer.v32[3]; buf = (uint8_t*)b; #else if ((((unsigned long)buf) & 0x03) != 0) { *buf++ ^= c->keystream_buffer.v8[0]; *buf++ ^= c->keystream_buffer.v8[1]; *buf++ ^= c->keystream_buffer.v8[2]; *buf++ ^= c->keystream_buffer.v8[3]; *buf++ ^= c->keystream_buffer.v8[4]; *buf++ ^= c->keystream_buffer.v8[5]; *buf++ ^= c->keystream_buffer.v8[6]; *buf++ ^= c->keystream_buffer.v8[7]; *buf++ ^= c->keystream_buffer.v8[8]; *buf++ ^= c->keystream_buffer.v8[9]; *buf++ ^= c->keystream_buffer.v8[10]; *buf++ ^= c->keystream_buffer.v8[11]; *buf++ ^= c->keystream_buffer.v8[12]; *buf++ ^= c->keystream_buffer.v8[13]; *buf++ ^= c->keystream_buffer.v8[14]; *buf++ ^= c->keystream_buffer.v8[15]; } else { b = (uint32_t*)buf; *b++ ^= c->keystream_buffer.v32[0]; *b++ ^= c->keystream_buffer.v32[1]; *b++ ^= c->keystream_buffer.v32[2]; *b++ ^= c->keystream_buffer.v32[3]; buf = (uint8_t*)b; } #endif /* #if ALIGN_32 */ } /* if there is a tail end of the data, process it */ if ((bytes_to_encr & 0xf) != 0) { /* fill buffer with new keystream */ srtp_aes_icm_advance_ismacryp(c, forIsmacryp); for (i = 0; i < (bytes_to_encr & 0xf); i++) { *buf++ ^= c->keystream_buffer.v8[i]; } /* reset the keystream buffer size to right value */ c->bytes_in_buffer = sizeof(v128_t) - i; } else { /* no tail, so just reset the keystream buffer size to zero */ c->bytes_in_buffer = 0; } return srtp_err_status_ok; } static srtp_err_status_t srtp_aes_icm_encrypt (void *cv, unsigned char *buf, unsigned int *enc_len) { srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; return srtp_aes_icm_encrypt_ismacryp(c, buf, enc_len, 0); } static const char srtp_aes_icm_description[] = "aes integer counter mode"; static const uint8_t srtp_aes_icm_test_case_0_key[30] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd }; static uint8_t srtp_aes_icm_test_case_0_nonce[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const uint8_t srtp_aes_icm_test_case_0_plaintext[32] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const uint8_t srtp_aes_icm_test_case_0_ciphertext[32] = { 0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80, 0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4, 0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7, 0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab }; static const srtp_cipher_test_case_t srtp_aes_icm_test_case_0 = { 30, /* octets in key */ srtp_aes_icm_test_case_0_key, /* key */ srtp_aes_icm_test_case_0_nonce, /* packet index */ 32, /* octets in plaintext */ srtp_aes_icm_test_case_0_plaintext, /* plaintext */ 32, /* octets in ciphertext */ srtp_aes_icm_test_case_0_ciphertext, /* ciphertext */ 0, NULL, 0, NULL /* pointer to next testcase */ }; static const uint8_t srtp_aes_icm_test_case_1_key[46] = { 0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70, 0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92, 0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82, 0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd }; static uint8_t srtp_aes_icm_test_case_1_nonce[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const uint8_t srtp_aes_icm_test_case_1_plaintext[32] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const uint8_t srtp_aes_icm_test_case_1_ciphertext[32] = { 0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25, 0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4, 0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6, 0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac }; static const srtp_cipher_test_case_t srtp_aes_icm_test_case_1 = { 46, /* octets in key */ srtp_aes_icm_test_case_1_key, /* key */ srtp_aes_icm_test_case_1_nonce, /* packet index */ 32, /* octets in plaintext */ srtp_aes_icm_test_case_1_plaintext, /* plaintext */ 32, /* octets in ciphertext */ srtp_aes_icm_test_case_1_ciphertext, /* ciphertext */ 0, NULL, 0, &srtp_aes_icm_test_case_0 /* pointer to next testcase */ }; /* * note: the encrypt function is identical to the decrypt function */ const srtp_cipher_type_t srtp_aes_icm = { srtp_aes_icm_alloc, srtp_aes_icm_dealloc, srtp_aes_icm_context_init, 0, /* set_aad */ srtp_aes_icm_encrypt, srtp_aes_icm_encrypt, srtp_aes_icm_set_iv, 0, /* get_tag */ srtp_aes_icm_description, &srtp_aes_icm_test_case_1, SRTP_AES_ICM }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/aes_icm_ossl.c000066400000000000000000000422111304141034500251510ustar00rootroot00000000000000/* * aes_icm_ossl.c * * AES Integer Counter Mode * * John A. Foley * Cisco Systems, Inc. * * 2/24/2012: This module was modified to use CiscoSSL for AES counter * mode. Eddy Lem contributed the code to allow this. * * 12/20/2012: Added support for AES-192 and AES-256. */ /* * * Copyright (c) 2013, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include #include "aes_icm_ossl.h" #include "crypto_types.h" #include "err.h" /* for srtp_debug */ #include "alloc.h" srtp_debug_module_t srtp_mod_aes_icm = { 0, /* debugging is off by default */ "aes icm ossl" /* printable module name */ }; extern const srtp_cipher_type_t srtp_aes_icm; #ifndef SRTP_NO_AES192 extern const srtp_cipher_type_t srtp_aes_icm_192; #endif extern const srtp_cipher_type_t srtp_aes_icm_256; /* * integer counter mode works as follows: * * 16 bits * <-----> * +------+------+------+------+------+------+------+------+ * | nonce | packet index | ctr |---+ * +------+------+------+------+------+------+------+------+ | * | * +------+------+------+------+------+------+------+------+ v * | salt |000000|->(+) * +------+------+------+------+------+------+------+------+ | * | * +---------+ * | encrypt | * +---------+ * | * +------+------+------+------+------+------+------+------+ | * | keystream block |<--+ * +------+------+------+------+------+------+------+------+ * * All fields are big-endian * * ctr is the block counter, which increments from zero for * each packet (16 bits wide) * * packet index is distinct for each packet (48 bits wide) * * nonce can be distinct across many uses of the same key, or * can be a fixed value per key, or can be per-packet randomness * (64 bits) * */ /* * This function allocates a new instance of this crypto engine. * The key_len parameter should be one of 30, 38, or 46 for * AES-128, AES-192, and AES-256 respectively. Note, this key_len * value is inflated, as it also accounts for the 112 bit salt * value. The tlen argument is for the AEAD tag length, which * isn't used in counter mode. */ static srtp_err_status_t srtp_aes_icm_openssl_alloc (srtp_cipher_t **c, int key_len, int tlen) { srtp_aes_icm_ctx_t *icm; debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d", key_len); /* * Verify the key_len is valid for one of: AES-128/192/256 */ if (key_len != SRTP_AES_128_KEYSIZE_WSALT && #ifndef SRTP_NO_AES192 key_len != SRTP_AES_192_KEYSIZE_WSALT && #endif key_len != SRTP_AES_256_KEYSIZE_WSALT) { return srtp_err_status_bad_param; } /* allocate memory a cipher of type aes_icm */ *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); if (*c == NULL) { return srtp_err_status_alloc_fail; } memset(*c, 0x0, sizeof(srtp_cipher_t)); icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t)); if (icm == NULL) { srtp_crypto_free(*c); *c = NULL; return srtp_err_status_alloc_fail; } memset(icm, 0x0, sizeof(srtp_aes_icm_ctx_t)); icm->ctx = EVP_CIPHER_CTX_new(); if (icm->ctx == NULL) { srtp_crypto_free(icm); srtp_crypto_free(*c); *c = NULL; return srtp_err_status_alloc_fail; } /* set pointers */ (*c)->state = icm; /* setup cipher parameters */ switch (key_len) { case SRTP_AES_128_KEYSIZE_WSALT: (*c)->algorithm = SRTP_AES_128_ICM; (*c)->type = &srtp_aes_icm; icm->key_size = SRTP_AES_128_KEYSIZE; break; #ifndef SRTP_NO_AES192 case SRTP_AES_192_KEYSIZE_WSALT: (*c)->algorithm = SRTP_AES_192_ICM; (*c)->type = &srtp_aes_icm_192; icm->key_size = SRTP_AES_192_KEYSIZE; break; #endif case SRTP_AES_256_KEYSIZE_WSALT: (*c)->algorithm = SRTP_AES_256_ICM; (*c)->type = &srtp_aes_icm_256; icm->key_size = SRTP_AES_256_KEYSIZE; break; } /* set key size */ (*c)->key_len = key_len; return srtp_err_status_ok; } /* * This function deallocates an instance of this engine */ static srtp_err_status_t srtp_aes_icm_openssl_dealloc (srtp_cipher_t *c) { srtp_aes_icm_ctx_t *ctx; if (c == NULL) { return srtp_err_status_bad_param; } /* * Free the EVP context */ ctx = (srtp_aes_icm_ctx_t*)c->state; if (ctx != NULL) { EVP_CIPHER_CTX_free(ctx->ctx); /* zeroize the key material */ octet_string_set_to_zero((uint8_t*)ctx, sizeof(srtp_aes_icm_ctx_t)); srtp_crypto_free(ctx); } /* free memory */ srtp_crypto_free(c); return srtp_err_status_ok; } /* * aes_icm_openssl_context_init(...) initializes the aes_icm_context * using the value in key[]. * * the key is the secret key * * the salt is unpredictable (but not necessarily secret) data which * randomizes the starting point in the keystream */ static srtp_err_status_t srtp_aes_icm_openssl_context_init (void* cv, const uint8_t *key) { srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; const EVP_CIPHER *evp; /* * set counter and initial values to 'offset' value, being careful not to * go past the end of the key buffer */ v128_set_to_zero(&c->counter); v128_set_to_zero(&c->offset); memcpy(&c->counter, key + c->key_size, SRTP_SALT_SIZE); memcpy(&c->offset, key + c->key_size, SRTP_SALT_SIZE); /* force last two octets of the offset to zero (for srtp compatibility) */ c->offset.v8[SRTP_SALT_SIZE] = c->offset.v8[SRTP_SALT_SIZE + 1] = 0; c->counter.v8[SRTP_SALT_SIZE] = c->counter.v8[SRTP_SALT_SIZE + 1] = 0; debug_print(srtp_mod_aes_icm, "key: %s", srtp_octet_string_hex_string(key, c->key_size)); debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset)); switch (c->key_size) { case SRTP_AES_256_KEYSIZE: evp = EVP_aes_256_ctr(); break; #ifndef SRTP_NO_AES192 case SRTP_AES_192_KEYSIZE: evp = EVP_aes_192_ctr(); break; #endif case SRTP_AES_128_KEYSIZE: evp = EVP_aes_128_ctr(); break; default: return srtp_err_status_bad_param; break; } if (!EVP_EncryptInit_ex(c->ctx, evp, NULL, key, NULL)) { return srtp_err_status_fail; } else { return srtp_err_status_ok; } return srtp_err_status_ok; } /* * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with * the offset */ static srtp_err_status_t srtp_aes_icm_openssl_set_iv (void *cv, uint8_t *iv, srtp_cipher_direction_t dir) { srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; v128_t nonce; /* set nonce (for alignment) */ v128_copy_octet_string(&nonce, iv); debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce)); v128_xor(&c->counter, &c->offset, &nonce); debug_print(srtp_mod_aes_icm, "set_counter: %s", v128_hex_string(&c->counter)); if (!EVP_EncryptInit_ex(c->ctx, NULL, NULL, NULL, c->counter.v8)) { return srtp_err_status_fail; } else { return srtp_err_status_ok; } } /* * This function encrypts a buffer using AES CTR mode * * Parameters: * c Crypto context * buf data to encrypt * enc_len length of encrypt buffer */ static srtp_err_status_t srtp_aes_icm_openssl_encrypt (void *cv, unsigned char *buf, unsigned int *enc_len) { srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; int len = 0; debug_print(srtp_mod_aes_icm, "rs0: %s", v128_hex_string(&c->counter)); if (!EVP_EncryptUpdate(c->ctx, buf, &len, buf, *enc_len)) { return srtp_err_status_cipher_fail; } *enc_len = len; if (!EVP_EncryptFinal_ex(c->ctx, buf, &len)) { return srtp_err_status_cipher_fail; } *enc_len += len; return srtp_err_status_ok; } /* * Name of this crypto engine */ static const char srtp_aes_icm_openssl_description[] = "AES-128 counter mode using openssl"; #ifndef SRTP_NO_AES192 static const char srtp_aes_icm_192_openssl_description[] = "AES-192 counter mode using openssl"; #endif static const char srtp_aes_icm_256_openssl_description[] = "AES-256 counter mode using openssl"; /* * KAT values for AES self-test. These * values came from the legacy libsrtp code. */ static const uint8_t srtp_aes_icm_test_case_0_key[SRTP_AES_128_KEYSIZE_WSALT] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd }; static uint8_t srtp_aes_icm_test_case_0_nonce[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const uint8_t srtp_aes_icm_test_case_0_plaintext[32] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const uint8_t srtp_aes_icm_test_case_0_ciphertext[32] = { 0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80, 0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4, 0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7, 0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab }; static const srtp_cipher_test_case_t srtp_aes_icm_test_case_0 = { SRTP_AES_128_KEYSIZE_WSALT, /* octets in key */ srtp_aes_icm_test_case_0_key, /* key */ srtp_aes_icm_test_case_0_nonce, /* packet index */ 32, /* octets in plaintext */ srtp_aes_icm_test_case_0_plaintext, /* plaintext */ 32, /* octets in ciphertext */ srtp_aes_icm_test_case_0_ciphertext, /* ciphertext */ 0, NULL, 0, NULL /* pointer to next testcase */ }; #ifndef SRTP_NO_AES192 /* * KAT values for AES-192-CTR self-test. These * values came from section 7 of RFC 6188. */ static const uint8_t srtp_aes_icm_192_test_case_1_key[SRTP_AES_192_KEYSIZE_WSALT] = { 0xea, 0xb2, 0x34, 0x76, 0x4e, 0x51, 0x7b, 0x2d, 0x3d, 0x16, 0x0d, 0x58, 0x7d, 0x8c, 0x86, 0x21, 0x97, 0x40, 0xf6, 0x5f, 0x99, 0xb6, 0xbc, 0xf7, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd }; static uint8_t srtp_aes_icm_192_test_case_1_nonce[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const uint8_t srtp_aes_icm_192_test_case_1_plaintext[32] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const uint8_t srtp_aes_icm_192_test_case_1_ciphertext[32] = { 0x35, 0x09, 0x6c, 0xba, 0x46, 0x10, 0x02, 0x8d, 0xc1, 0xb5, 0x75, 0x03, 0x80, 0x4c, 0xe3, 0x7c, 0x5d, 0xe9, 0x86, 0x29, 0x1d, 0xcc, 0xe1, 0x61, 0xd5, 0x16, 0x5e, 0xc4, 0x56, 0x8f, 0x5c, 0x9a }; static const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_1 = { SRTP_AES_192_KEYSIZE_WSALT, /* octets in key */ srtp_aes_icm_192_test_case_1_key, /* key */ srtp_aes_icm_192_test_case_1_nonce, /* packet index */ 32, /* octets in plaintext */ srtp_aes_icm_192_test_case_1_plaintext, /* plaintext */ 32, /* octets in ciphertext */ srtp_aes_icm_192_test_case_1_ciphertext, /* ciphertext */ 0, NULL, 0, NULL /* pointer to next testcase */ }; #endif /* * KAT values for AES-256-CTR self-test. These * values came from section 7 of RFC 6188. */ static const uint8_t srtp_aes_icm_256_test_case_2_key[SRTP_AES_256_KEYSIZE_WSALT] = { 0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70, 0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92, 0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82, 0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd }; static uint8_t srtp_aes_icm_256_test_case_2_nonce[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const uint8_t srtp_aes_icm_256_test_case_2_plaintext[32] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const uint8_t srtp_aes_icm_256_test_case_2_ciphertext[32] = { 0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25, 0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4, 0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6, 0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac }; static const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_2 = { SRTP_AES_256_KEYSIZE_WSALT, /* octets in key */ srtp_aes_icm_256_test_case_2_key, /* key */ srtp_aes_icm_256_test_case_2_nonce, /* packet index */ 32, /* octets in plaintext */ srtp_aes_icm_256_test_case_2_plaintext, /* plaintext */ 32, /* octets in ciphertext */ srtp_aes_icm_256_test_case_2_ciphertext, /* ciphertext */ 0, NULL, 0, NULL /* pointer to next testcase */ }; /* * This is the function table for this crypto engine. * note: the encrypt function is identical to the decrypt function */ const srtp_cipher_type_t srtp_aes_icm = { srtp_aes_icm_openssl_alloc, srtp_aes_icm_openssl_dealloc, srtp_aes_icm_openssl_context_init, 0, /* set_aad */ srtp_aes_icm_openssl_encrypt, srtp_aes_icm_openssl_encrypt, srtp_aes_icm_openssl_set_iv, 0, /* get_tag */ srtp_aes_icm_openssl_description, &srtp_aes_icm_test_case_0, SRTP_AES_ICM }; #ifndef SRTP_NO_AES192 /* * This is the function table for this crypto engine. * note: the encrypt function is identical to the decrypt function */ const srtp_cipher_type_t srtp_aes_icm_192 = { srtp_aes_icm_openssl_alloc, srtp_aes_icm_openssl_dealloc, srtp_aes_icm_openssl_context_init, 0, /* set_aad */ srtp_aes_icm_openssl_encrypt, srtp_aes_icm_openssl_encrypt, srtp_aes_icm_openssl_set_iv, 0, /* get_tag */ srtp_aes_icm_192_openssl_description, &srtp_aes_icm_192_test_case_1, SRTP_AES_192_ICM }; #endif /* * This is the function table for this crypto engine. * note: the encrypt function is identical to the decrypt function */ const srtp_cipher_type_t srtp_aes_icm_256 = { srtp_aes_icm_openssl_alloc, srtp_aes_icm_openssl_dealloc, srtp_aes_icm_openssl_context_init, 0, /* set_aad */ srtp_aes_icm_openssl_encrypt, srtp_aes_icm_openssl_encrypt, srtp_aes_icm_openssl_set_iv, 0, /* get_tag */ srtp_aes_icm_256_openssl_description, &srtp_aes_icm_256_test_case_2, SRTP_AES_256_ICM }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/cipher.c000066400000000000000000000504731304141034500237740ustar00rootroot00000000000000/* * cipher.c * * cipher meta-functions * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "cipher.h" #include "crypto_types.h" #include "err.h" /* for srtp_debug */ #include "alloc.h" /* for crypto_alloc(), crypto_free() */ srtp_debug_module_t srtp_mod_cipher = { 0, /* debugging is off by default */ "cipher" /* printable module name */ }; srtp_err_status_t srtp_cipher_type_alloc (const srtp_cipher_type_t *ct, srtp_cipher_t **c, int key_len, int tlen) { if (!ct || !ct->alloc) { return (srtp_err_status_bad_param); } return ((ct)->alloc((c), (key_len), (tlen))); } srtp_err_status_t srtp_cipher_dealloc (srtp_cipher_t *c) { if (!c || !c->type) { return (srtp_err_status_bad_param); } return (((c)->type)->dealloc(c)); } srtp_err_status_t srtp_cipher_init (srtp_cipher_t *c, const uint8_t *key) { if (!c || !c->type || !c->state) { return (srtp_err_status_bad_param); } return (((c)->type)->init(((c)->state), (key))); } srtp_err_status_t srtp_cipher_set_iv (srtp_cipher_t *c, uint8_t *iv, int direction) { if (!c || !c->type || !c->state) { return (srtp_err_status_bad_param); } return (((c)->type)->set_iv(((c)->state), iv, direction)); } srtp_err_status_t srtp_cipher_output (srtp_cipher_t *c, uint8_t *buffer, uint32_t *num_octets_to_output) { /* zeroize the buffer */ octet_string_set_to_zero(buffer, *num_octets_to_output); /* exor keystream into buffer */ return (((c)->type)->encrypt(((c)->state), buffer, num_octets_to_output)); } srtp_err_status_t srtp_cipher_encrypt (srtp_cipher_t *c, uint8_t *buffer, uint32_t *num_octets_to_output) { if (!c || !c->type || !c->state) { return (srtp_err_status_bad_param); } return (((c)->type)->encrypt(((c)->state), buffer, num_octets_to_output)); } srtp_err_status_t srtp_cipher_decrypt (srtp_cipher_t *c, uint8_t *buffer, uint32_t *num_octets_to_output) { if (!c || !c->type || !c->state) { return (srtp_err_status_bad_param); } return (((c)->type)->decrypt(((c)->state), buffer, num_octets_to_output)); } srtp_err_status_t srtp_cipher_get_tag (srtp_cipher_t *c, uint8_t *buffer, uint32_t *tag_len) { if (!c || !c->type || !c->state) { return (srtp_err_status_bad_param); } if (!((c)->type)->get_tag) { return (srtp_err_status_no_such_op); } return (((c)->type)->get_tag(((c)->state), buffer, tag_len)); } srtp_err_status_t srtp_cipher_set_aad (srtp_cipher_t *c, const uint8_t *aad, uint32_t aad_len) { if (!c || !c->type || !c->state) { return (srtp_err_status_bad_param); } if (!((c)->type)->set_aad) { return (srtp_err_status_no_such_op); } return (((c)->type)->set_aad(((c)->state), aad, aad_len)); } /* some bookkeeping functions */ int srtp_cipher_get_key_length (const srtp_cipher_t *c) { return c->key_len; } /* * A trivial platform independent random source. The random * data is used for some of the cipher self-tests. */ static srtp_err_status_t srtp_cipher_rand (void *dest, uint32_t len) { #if defined(HAVE_RAND_S) uint8_t *dst = (uint8_t *)dest; while (len) { unsigned int val; errno_t err = rand_s(&val); if (err != 0) return srtp_err_status_fail; *dst++ = val & 0xff; len--; } #else /* Generic C-library (rand()) version */ /* This is a random source of last resort */ uint8_t *dst = (uint8_t *)dest; while (len) { int val = rand(); /* rand() returns 0-32767 (ugh) */ /* Is this a good enough way to get random bytes? It is if it passes FIPS-140... */ *dst++ = val & 0xff; len--; } #endif return srtp_err_status_ok; } #define SELF_TEST_BUF_OCTETS 128 #define NUM_RAND_TESTS 128 #define MAX_KEY_LEN 64 /* * srtp_cipher_type_test(ct, test_data) tests a cipher of type ct against * test cases provided in a list test_data of values of key, salt, iv, * plaintext, and ciphertext that is known to be good */ srtp_err_status_t srtp_cipher_type_test (const srtp_cipher_type_t *ct, const srtp_cipher_test_case_t *test_data) { const srtp_cipher_test_case_t *test_case = test_data; srtp_cipher_t *c; srtp_err_status_t status; uint8_t buffer[SELF_TEST_BUF_OCTETS]; uint8_t buffer2[SELF_TEST_BUF_OCTETS]; uint32_t tag_len; unsigned int len; int i, j, case_num = 0; debug_print(srtp_mod_cipher, "running self-test for cipher %s", ct->description); /* * check to make sure that we have at least one test case, and * return an error if we don't - we need to be paranoid here */ if (test_case == NULL) { return srtp_err_status_cant_check; } /* * loop over all test cases, perform known-answer tests of both the * encryption and decryption functions */ while (test_case != NULL) { /* allocate cipher */ status = srtp_cipher_type_alloc(ct, &c, test_case->key_length_octets, test_case->tag_length_octets); if (status) { return status; } /* * test the encrypt function */ debug_print(srtp_mod_cipher, "testing encryption", NULL); /* initialize cipher */ status = srtp_cipher_init(c, test_case->key); if (status) { srtp_cipher_dealloc(c); return status; } /* copy plaintext into test buffer */ if (test_case->ciphertext_length_octets > SELF_TEST_BUF_OCTETS) { srtp_cipher_dealloc(c); return srtp_err_status_bad_param; } for (i = 0; i < test_case->plaintext_length_octets; i++) { buffer[i] = test_case->plaintext[i]; } debug_print(srtp_mod_cipher, "plaintext: %s", srtp_octet_string_hex_string(buffer, test_case->plaintext_length_octets)); /* set the initialization vector */ status = srtp_cipher_set_iv(c, (uint8_t*)test_case->idx, srtp_direction_encrypt); if (status) { srtp_cipher_dealloc(c); return status; } if (c->algorithm == SRTP_AES_128_GCM || c->algorithm == SRTP_AES_256_GCM) { debug_print(srtp_mod_cipher, "IV: %s", srtp_octet_string_hex_string(test_case->idx, 12)); /* * Set the AAD */ status = srtp_cipher_set_aad(c, test_case->aad, test_case->aad_length_octets); if (status) { srtp_cipher_dealloc(c); return status; } debug_print(srtp_mod_cipher, "AAD: %s", srtp_octet_string_hex_string(test_case->aad, test_case->aad_length_octets)); } /* encrypt */ len = test_case->plaintext_length_octets; status = srtp_cipher_encrypt(c, buffer, &len); if (status) { srtp_cipher_dealloc(c); return status; } if (c->algorithm == SRTP_AES_128_GCM || c->algorithm == SRTP_AES_256_GCM) { /* * Get the GCM tag */ status = srtp_cipher_get_tag(c, buffer + len, &tag_len); if (status) { srtp_cipher_dealloc(c); return status; } len += tag_len; } debug_print(srtp_mod_cipher, "ciphertext: %s", srtp_octet_string_hex_string(buffer, test_case->ciphertext_length_octets)); /* compare the resulting ciphertext with that in the test case */ if (len != test_case->ciphertext_length_octets) { return srtp_err_status_algo_fail; } status = srtp_err_status_ok; for (i = 0; i < test_case->ciphertext_length_octets; i++) { if (buffer[i] != test_case->ciphertext[i]) { status = srtp_err_status_algo_fail; debug_print(srtp_mod_cipher, "test case %d failed", case_num); debug_print(srtp_mod_cipher, "(failure at byte %d)", i); break; } } if (status) { debug_print(srtp_mod_cipher, "c computed: %s", srtp_octet_string_hex_string(buffer, 2 * test_case->plaintext_length_octets)); debug_print(srtp_mod_cipher, "c expected: %s", srtp_octet_string_hex_string(test_case->ciphertext, 2 * test_case->plaintext_length_octets)); srtp_cipher_dealloc(c); return srtp_err_status_algo_fail; } /* * test the decrypt function */ debug_print(srtp_mod_cipher, "testing decryption", NULL); /* re-initialize cipher for decryption */ status = srtp_cipher_init(c, test_case->key); if (status) { srtp_cipher_dealloc(c); return status; } /* copy ciphertext into test buffer */ if (test_case->ciphertext_length_octets > SELF_TEST_BUF_OCTETS) { srtp_cipher_dealloc(c); return srtp_err_status_bad_param; } for (i = 0; i < test_case->ciphertext_length_octets; i++) { buffer[i] = test_case->ciphertext[i]; } debug_print(srtp_mod_cipher, "ciphertext: %s", srtp_octet_string_hex_string(buffer, test_case->plaintext_length_octets)); /* set the initialization vector */ status = srtp_cipher_set_iv(c, (uint8_t*)test_case->idx, srtp_direction_decrypt); if (status) { srtp_cipher_dealloc(c); return status; } if (c->algorithm == SRTP_AES_128_GCM || c->algorithm == SRTP_AES_256_GCM) { /* * Set the AAD */ status = srtp_cipher_set_aad(c, test_case->aad, test_case->aad_length_octets); if (status) { srtp_cipher_dealloc(c); return status; } debug_print(srtp_mod_cipher, "AAD: %s", srtp_octet_string_hex_string(test_case->aad, test_case->aad_length_octets)); } /* decrypt */ len = test_case->ciphertext_length_octets; status = srtp_cipher_decrypt(c, buffer, &len); if (status) { srtp_cipher_dealloc(c); return status; } debug_print(srtp_mod_cipher, "plaintext: %s", srtp_octet_string_hex_string(buffer, test_case->plaintext_length_octets)); /* compare the resulting plaintext with that in the test case */ if (len != test_case->plaintext_length_octets) { return srtp_err_status_algo_fail; } status = srtp_err_status_ok; for (i = 0; i < test_case->plaintext_length_octets; i++) { if (buffer[i] != test_case->plaintext[i]) { status = srtp_err_status_algo_fail; debug_print(srtp_mod_cipher, "test case %d failed", case_num); debug_print(srtp_mod_cipher, "(failure at byte %d)", i); } } if (status) { debug_print(srtp_mod_cipher, "p computed: %s", srtp_octet_string_hex_string(buffer, 2 * test_case->plaintext_length_octets)); debug_print(srtp_mod_cipher, "p expected: %s", srtp_octet_string_hex_string(test_case->plaintext, 2 * test_case->plaintext_length_octets)); srtp_cipher_dealloc(c); return srtp_err_status_algo_fail; } /* deallocate the cipher */ status = srtp_cipher_dealloc(c); if (status) { return status; } /* * the cipher passed the test case, so move on to the next test * case in the list; if NULL, we'l proceed to the next test */ test_case = test_case->next_test_case; ++case_num; } /* now run some random invertibility tests */ /* allocate cipher, using paramaters from the first test case */ test_case = test_data; status = srtp_cipher_type_alloc(ct, &c, test_case->key_length_octets, test_case->tag_length_octets); if (status) { return status; } for (j = 0; j < NUM_RAND_TESTS; j++) { unsigned length; int plaintext_len; uint8_t key[MAX_KEY_LEN]; uint8_t iv[MAX_KEY_LEN]; /* choose a length at random (leaving room for IV and padding) */ length = rand() % (SELF_TEST_BUF_OCTETS - 64); debug_print(srtp_mod_cipher, "random plaintext length %d\n", length); status = srtp_cipher_rand(buffer, length); if (status) { return status; } debug_print(srtp_mod_cipher, "plaintext: %s", srtp_octet_string_hex_string(buffer, length)); /* copy plaintext into second buffer */ for (i = 0; (unsigned int)i < length; i++) { buffer2[i] = buffer[i]; } /* choose a key at random */ if (test_case->key_length_octets > MAX_KEY_LEN) { return srtp_err_status_cant_check; } status = srtp_cipher_rand(key, test_case->key_length_octets); if (status) { return status; } /* chose a random initialization vector */ status = srtp_cipher_rand(iv, MAX_KEY_LEN); if (status) { return status; } /* initialize cipher */ status = srtp_cipher_init(c, key); if (status) { srtp_cipher_dealloc(c); return status; } /* set initialization vector */ status = srtp_cipher_set_iv(c, (uint8_t*)test_case->idx, srtp_direction_encrypt); if (status) { srtp_cipher_dealloc(c); return status; } if (c->algorithm == SRTP_AES_128_GCM || c->algorithm == SRTP_AES_256_GCM) { /* * Set the AAD */ status = srtp_cipher_set_aad(c, test_case->aad, test_case->aad_length_octets); if (status) { srtp_cipher_dealloc(c); return status; } debug_print(srtp_mod_cipher, "AAD: %s", srtp_octet_string_hex_string(test_case->aad, test_case->aad_length_octets)); } /* encrypt buffer with cipher */ plaintext_len = length; status = srtp_cipher_encrypt(c, buffer, &length); if (status) { srtp_cipher_dealloc(c); return status; } if (c->algorithm == SRTP_AES_128_GCM || c->algorithm == SRTP_AES_256_GCM) { /* * Get the GCM tag */ status = srtp_cipher_get_tag(c, buffer + length, &tag_len); if (status) { srtp_cipher_dealloc(c); return status; } length += tag_len; } debug_print(srtp_mod_cipher, "ciphertext: %s", srtp_octet_string_hex_string(buffer, length)); /* * re-initialize cipher for decryption, re-set the iv, then * decrypt the ciphertext */ status = srtp_cipher_init(c, key); if (status) { srtp_cipher_dealloc(c); return status; } status = srtp_cipher_set_iv(c, (uint8_t*)test_case->idx, srtp_direction_decrypt); if (status) { srtp_cipher_dealloc(c); return status; } if (c->algorithm == SRTP_AES_128_GCM || c->algorithm == SRTP_AES_256_GCM) { /* * Set the AAD */ status = srtp_cipher_set_aad(c, test_case->aad, test_case->aad_length_octets); if (status) { srtp_cipher_dealloc(c); return status; } debug_print(srtp_mod_cipher, "AAD: %s", srtp_octet_string_hex_string(test_case->aad, test_case->aad_length_octets)); } status = srtp_cipher_decrypt(c, buffer, &length); if (status) { srtp_cipher_dealloc(c); return status; } debug_print(srtp_mod_cipher, "plaintext[2]: %s", srtp_octet_string_hex_string(buffer, length)); /* compare the resulting plaintext with the original one */ if (length != plaintext_len) { return srtp_err_status_algo_fail; } status = srtp_err_status_ok; for (i = 0; i < plaintext_len; i++) { if (buffer[i] != buffer2[i]) { status = srtp_err_status_algo_fail; debug_print(srtp_mod_cipher, "random test case %d failed", case_num); debug_print(srtp_mod_cipher, "(failure at byte %d)", i); } } if (status) { srtp_cipher_dealloc(c); return srtp_err_status_algo_fail; } } status = srtp_cipher_dealloc(c); if (status) { return status; } return srtp_err_status_ok; } /* * srtp_cipher_type_self_test(ct) performs srtp_cipher_type_test on ct's internal * list of test data. */ srtp_err_status_t srtp_cipher_type_self_test (const srtp_cipher_type_t *ct) { return srtp_cipher_type_test(ct, ct->test_data); } /* * cipher_bits_per_second(c, l, t) computes (an estimate of) the * number of bits that a cipher implementation can encrypt in a second * * c is a cipher (which MUST be allocated and initialized already), l * is the length in octets of the test data to be encrypted, and t is * the number of trials * * if an error is encountered, the value 0 is returned */ uint64_t srtp_cipher_bits_per_second (srtp_cipher_t *c, int octets_in_buffer, int num_trials) { int i; v128_t nonce; clock_t timer; unsigned char *enc_buf; unsigned int len = octets_in_buffer; enc_buf = (unsigned char*)srtp_crypto_alloc(octets_in_buffer); if (enc_buf == NULL) { return 0; /* indicate bad parameters by returning null */ } /* time repeated trials */ v128_set_to_zero(&nonce); timer = clock(); for (i = 0; i < num_trials; i++, nonce.v32[3] = i) { srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt); srtp_cipher_encrypt(c, enc_buf, &len); } timer = clock() - timer; srtp_crypto_free(enc_buf); if (timer == 0) { /* Too fast! */ return 0; } return (uint64_t)CLOCKS_PER_SEC * num_trials * 8 * octets_in_buffer / timer; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/cipher/null_cipher.c000066400000000000000000000112671304141034500250240ustar00rootroot00000000000000/* * null_cipher.c * * A null cipher implementation. This cipher leaves the plaintext * unchanged. * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "datatypes.h" #include "null_cipher.h" #include "err.h" /* for srtp_debug */ #include "alloc.h" /* the null_cipher uses the cipher debug module */ extern srtp_debug_module_t srtp_mod_cipher; static srtp_err_status_t srtp_null_cipher_alloc (srtp_cipher_t **c, int key_len, int tlen) { extern const srtp_cipher_type_t srtp_null_cipher; debug_print(srtp_mod_cipher, "allocating cipher with key length %d", key_len); /* allocate memory a cipher of type null_cipher */ *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); if (*c == NULL) { return srtp_err_status_alloc_fail; } memset(*c, 0x0, sizeof(srtp_cipher_t)); /* set pointers */ (*c)->algorithm = SRTP_NULL_CIPHER; (*c)->type = &srtp_null_cipher; (*c)->state = (void *) 0x1; /* The null cipher does not maintain state */ /* set key size */ (*c)->key_len = key_len; return srtp_err_status_ok; } static srtp_err_status_t srtp_null_cipher_dealloc (srtp_cipher_t *c) { extern const srtp_cipher_type_t srtp_null_cipher; /* zeroize entire state*/ octet_string_set_to_zero((uint8_t*)c, sizeof(srtp_cipher_t)); /* free memory of type null_cipher */ srtp_crypto_free(c); return srtp_err_status_ok; } static srtp_err_status_t srtp_null_cipher_init (void *cv, const uint8_t *key) { /* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */ debug_print(srtp_mod_cipher, "initializing null cipher", NULL); return srtp_err_status_ok; } static srtp_err_status_t srtp_null_cipher_set_iv (void *cv, uint8_t *iv, srtp_cipher_direction_t dir) { /* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */ return srtp_err_status_ok; } static srtp_err_status_t srtp_null_cipher_encrypt (void *cv, unsigned char *buf, unsigned int *bytes_to_encr) { /* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */ return srtp_err_status_ok; } static const char srtp_null_cipher_description[] = "null cipher"; static const srtp_cipher_test_case_t srtp_null_cipher_test_0 = { 0, /* octets in key */ NULL, /* key */ 0, /* packet index */ 0, /* octets in plaintext */ NULL, /* plaintext */ 0, /* octets in plaintext */ NULL, /* ciphertext */ 0, NULL, 0, NULL /* pointer to next testcase */ }; /* * note: the decrypt function is idential to the encrypt function */ const srtp_cipher_type_t srtp_null_cipher = { srtp_null_cipher_alloc, srtp_null_cipher_dealloc, srtp_null_cipher_init, 0, /* set_aad */ srtp_null_cipher_encrypt, srtp_null_cipher_encrypt, srtp_null_cipher_set_iv, 0, /* get_tag */ srtp_null_cipher_description, &srtp_null_cipher_test_0, SRTP_NULL_CIPHER }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/hash/000077500000000000000000000000001304141034500220165ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/hash/auth.c000066400000000000000000000137231304141034500231310ustar00rootroot00000000000000/* * auth.c * * some bookkeeping functions for authentication functions * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "auth.h" #include "err.h" /* for srtp_debug */ #include "datatypes.h" /* for octet_string */ /* the debug module for authentiation */ srtp_debug_module_t srtp_mod_auth = { 0, /* debugging is off by default */ "auth func" /* printable name for module */ }; int srtp_auth_get_key_length (const srtp_auth_t *a) { return a->key_len; } int srtp_auth_get_tag_length (const srtp_auth_t *a) { return a->out_len; } int srtp_auth_get_prefix_length (const srtp_auth_t *a) { return a->prefix_len; } /* * srtp_auth_type_test() tests an auth function of type ct against * test cases provided in a list test_data of values of key, data, and tag * that is known to be good */ /* should be big enough for most occasions */ #define SELF_TEST_TAG_BUF_OCTETS 32 srtp_err_status_t srtp_auth_type_test (const srtp_auth_type_t *at, const srtp_auth_test_case_t *test_data) { const srtp_auth_test_case_t *test_case = test_data; srtp_auth_t *a; srtp_err_status_t status; uint8_t tag[SELF_TEST_TAG_BUF_OCTETS]; int i, case_num = 0; debug_print(srtp_mod_auth, "running self-test for auth function %s", at->description); /* * check to make sure that we have at least one test case, and * return an error if we don't - we need to be paranoid here */ if (test_case == NULL) { return srtp_err_status_cant_check; } /* loop over all test cases */ while (test_case != NULL) { /* check test case parameters */ if (test_case->tag_length_octets > SELF_TEST_TAG_BUF_OCTETS) { return srtp_err_status_bad_param; } /* allocate auth */ status = srtp_auth_type_alloc(at, &a, test_case->key_length_octets, test_case->tag_length_octets); if (status) { return status; } /* initialize auth */ status = srtp_auth_init(a, test_case->key); if (status) { srtp_auth_dealloc(a); return status; } /* zeroize tag then compute */ octet_string_set_to_zero(tag, test_case->tag_length_octets); status = srtp_auth_compute(a, test_case->data, test_case->data_length_octets, tag); if (status) { srtp_auth_dealloc(a); return status; } debug_print(srtp_mod_auth, "key: %s", srtp_octet_string_hex_string(test_case->key, test_case->key_length_octets)); debug_print(srtp_mod_auth, "data: %s", srtp_octet_string_hex_string(test_case->data, test_case->data_length_octets)); debug_print(srtp_mod_auth, "tag computed: %s", srtp_octet_string_hex_string(tag, test_case->tag_length_octets)); debug_print(srtp_mod_auth, "tag expected: %s", srtp_octet_string_hex_string(test_case->tag, test_case->tag_length_octets)); /* check the result */ status = srtp_err_status_ok; for (i = 0; i < test_case->tag_length_octets; i++) { if (tag[i] != test_case->tag[i]) { status = srtp_err_status_algo_fail; debug_print(srtp_mod_auth, "test case %d failed", case_num); debug_print(srtp_mod_auth, " (mismatch at octet %d)", i); } } if (status) { srtp_auth_dealloc(a); return srtp_err_status_algo_fail; } /* deallocate the auth function */ status = srtp_auth_dealloc(a); if (status) { return status; } /* * the auth function passed the test case, so move on to the next test * case in the list; if NULL, we'll quit and return an OK */ test_case = test_case->next_test_case; ++case_num; } return srtp_err_status_ok; } /* * auth_type_self_test(at) performs srtp_auth_type_test on at's internal * list of test data. */ srtp_err_status_t srtp_auth_type_self_test (const srtp_auth_type_t *at) { return srtp_auth_type_test(at, at->test_data); } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/hash/hmac.c000066400000000000000000000175561304141034500231100ustar00rootroot00000000000000/* * hmac.c * * implementation of hmac srtp_auth_type_t * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "hmac.h" #include "alloc.h" /* the debug module for authentiation */ srtp_debug_module_t srtp_mod_hmac = { 0, /* debugging is off by default */ "hmac sha-1" /* printable name for module */ }; static srtp_err_status_t srtp_hmac_alloc (srtp_auth_t **a, int key_len, int out_len) { extern const srtp_auth_type_t srtp_hmac; uint8_t *pointer; debug_print(srtp_mod_hmac, "allocating auth func with key length %d", key_len); debug_print(srtp_mod_hmac, " tag length %d", out_len); /* * check key length - note that we don't support keys larger * than 20 bytes yet */ if (key_len > 20) { return srtp_err_status_bad_param; } /* check output length - should be less than 20 bytes */ if (out_len > 20) { return srtp_err_status_bad_param; } /* allocate memory for auth and srtp_hmac_ctx_t structures */ pointer = (uint8_t*)srtp_crypto_alloc(sizeof(srtp_hmac_ctx_t) + sizeof(srtp_auth_t)); if (pointer == NULL) { return srtp_err_status_alloc_fail; } /* set pointers */ *a = (srtp_auth_t*)pointer; (*a)->type = &srtp_hmac; (*a)->state = pointer + sizeof(srtp_auth_t); (*a)->out_len = out_len; (*a)->key_len = key_len; (*a)->prefix_len = 0; return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_dealloc (srtp_auth_t *a) { /* zeroize entire state*/ octet_string_set_to_zero((uint8_t*)a, sizeof(srtp_hmac_ctx_t) + sizeof(srtp_auth_t)); /* free memory */ srtp_crypto_free(a); return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_init (void *statev, const uint8_t *key, int key_len) { srtp_hmac_ctx_t *state = (srtp_hmac_ctx_t *)statev; int i; uint8_t ipad[64]; /* * check key length - note that we don't support keys larger * than 20 bytes yet */ if (key_len > 20) { return srtp_err_status_bad_param; } /* * set values of ipad and opad by exoring the key into the * appropriate constant values */ for (i = 0; i < key_len; i++) { ipad[i] = key[i] ^ 0x36; state->opad[i] = key[i] ^ 0x5c; } /* set the rest of ipad, opad to constant values */ for (; i < 64; i++) { ipad[i] = 0x36; ((uint8_t*)state->opad)[i] = 0x5c; } debug_print(srtp_mod_hmac, "ipad: %s", srtp_octet_string_hex_string(ipad, 64)); /* initialize sha1 context */ srtp_sha1_init(&state->init_ctx); /* hash ipad ^ key */ srtp_sha1_update(&state->init_ctx, ipad, 64); memcpy(&state->ctx, &state->init_ctx, sizeof(srtp_sha1_ctx_t)); return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_start (void *statev) { srtp_hmac_ctx_t *state = (srtp_hmac_ctx_t *)statev; memcpy(&state->ctx, &state->init_ctx, sizeof(srtp_sha1_ctx_t)); return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_update (void *statev, const uint8_t *message, int msg_octets) { srtp_hmac_ctx_t *state = (srtp_hmac_ctx_t *)statev; debug_print(srtp_mod_hmac, "input: %s", srtp_octet_string_hex_string(message, msg_octets)); /* hash message into sha1 context */ srtp_sha1_update(&state->ctx, message, msg_octets); return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_compute (void *statev, const uint8_t *message, int msg_octets, int tag_len, uint8_t *result) { srtp_hmac_ctx_t *state = (srtp_hmac_ctx_t *)statev; uint32_t hash_value[5]; uint32_t H[5]; int i; /* check tag length, return error if we can't provide the value expected */ if (tag_len > 20) { return srtp_err_status_bad_param; } /* hash message, copy output into H */ srtp_hmac_update(state, message, msg_octets); srtp_sha1_final(&state->ctx, H); /* * note that we don't need to debug_print() the input, since the * function hmac_update() already did that for us */ debug_print(srtp_mod_hmac, "intermediate state: %s", srtp_octet_string_hex_string((uint8_t*)H, 20)); /* re-initialize hash context */ srtp_sha1_init(&state->ctx); /* hash opad ^ key */ srtp_sha1_update(&state->ctx, (uint8_t*)state->opad, 64); /* hash the result of the inner hash */ srtp_sha1_update(&state->ctx, (uint8_t*)H, 20); /* the result is returned in the array hash_value[] */ srtp_sha1_final(&state->ctx, hash_value); /* copy hash_value to *result */ for (i = 0; i < tag_len; i++) { result[i] = ((uint8_t*)hash_value)[i]; } debug_print(srtp_mod_hmac, "output: %s", srtp_octet_string_hex_string((uint8_t*)hash_value, tag_len)); return srtp_err_status_ok; } /* begin test case 0 */ static const uint8_t srtp_hmac_test_case_0_key[20] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b }; static const uint8_t srtp_hmac_test_case_0_data[8] = { 0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65 /* "Hi There" */ }; static const uint8_t srtp_hmac_test_case_0_tag[20] = { 0xb6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64, 0xe2, 0x8b, 0xc0, 0xb6, 0xfb, 0x37, 0x8c, 0x8e, 0xf1, 0x46, 0xbe, 0x00 }; static const srtp_auth_test_case_t srtp_hmac_test_case_0 = { 20, /* octets in key */ srtp_hmac_test_case_0_key, /* key */ 8, /* octets in data */ srtp_hmac_test_case_0_data, /* data */ 20, /* octets in tag */ srtp_hmac_test_case_0_tag, /* tag */ NULL /* pointer to next testcase */ }; /* end test case 0 */ static const char srtp_hmac_description[] = "hmac sha-1 authentication function"; /* * srtp_auth_type_t hmac is the hmac metaobject */ const srtp_auth_type_t srtp_hmac = { srtp_hmac_alloc, srtp_hmac_dealloc, srtp_hmac_init, srtp_hmac_compute, srtp_hmac_update, srtp_hmac_start, srtp_hmac_description, &srtp_hmac_test_case_0, SRTP_HMAC_SHA1 }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/hash/hmac_ossl.c000066400000000000000000000171241304141034500241370ustar00rootroot00000000000000/* * hmac_ossl.c * * Implementation of hmac srtp_auth_type_t that leverages OpenSSL * * John A. Foley * Cisco Systems, Inc. */ /* * * Copyright(c) 2013, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "auth.h" #include "alloc.h" #include "err.h" /* for srtp_debug */ #include #include #define SHA1_DIGEST_SIZE 20 /* the debug module for authentiation */ srtp_debug_module_t srtp_mod_hmac = { 0, /* debugging is off by default */ "hmac sha-1 openssl" /* printable name for module */ }; static srtp_err_status_t srtp_hmac_alloc (srtp_auth_t **a, int key_len, int out_len) { extern const srtp_auth_type_t srtp_hmac; debug_print(srtp_mod_hmac, "allocating auth func with key length %d", key_len); debug_print(srtp_mod_hmac, " tag length %d", out_len); /* check output length - should be less than 20 bytes */ if (out_len > SHA1_DIGEST_SIZE) { return srtp_err_status_bad_param; } /* OpenSSL 1.1.0 made HMAC_CTX an opaque structure, which must be allocated using HMAC_CTX_new. But this function doesn't exist in OpenSSL 1.0.x. */ #if OPENSSL_VERSION_NUMBER < 0x10100000L { /* allocate memory for auth and HMAC_CTX structures */ uint8_t* pointer; HMAC_CTX *new_hmac_ctx; pointer = (uint8_t*)srtp_crypto_alloc(sizeof(HMAC_CTX) + sizeof(srtp_auth_t)); if (pointer == NULL) { return srtp_err_status_alloc_fail; } *a = (srtp_auth_t*)pointer; (*a)->state = pointer + sizeof(srtp_auth_t); new_hmac_ctx = (HMAC_CTX*)((*a)->state); HMAC_CTX_init(new_hmac_ctx); } #else *a = (srtp_auth_t*)srtp_crypto_alloc(sizeof(srtp_auth_t)); if (*a == NULL) { return srtp_err_status_alloc_fail; } (*a)->state = HMAC_CTX_new(); if ((*a)->state == NULL) { srtp_crypto_free(*a); *a = NULL; return srtp_err_status_alloc_fail; } #endif /* set pointers */ (*a)->type = &srtp_hmac; (*a)->out_len = out_len; (*a)->key_len = key_len; (*a)->prefix_len = 0; return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_dealloc (srtp_auth_t *a) { HMAC_CTX *hmac_ctx; hmac_ctx = (HMAC_CTX*)a->state; #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_cleanup(hmac_ctx); /* zeroize entire state*/ octet_string_set_to_zero((uint8_t*)a, sizeof(HMAC_CTX) + sizeof(srtp_auth_t)); #else HMAC_CTX_free(hmac_ctx); /* zeroize entire state*/ octet_string_set_to_zero((uint8_t*)a, sizeof(srtp_auth_t)); #endif /* free memory */ srtp_crypto_free(a); return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_start (void *statev) { HMAC_CTX *state = (HMAC_CTX *)statev; if (HMAC_Init_ex(state, NULL, 0, NULL, NULL) == 0) return srtp_err_status_auth_fail; return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_init (void *statev, const uint8_t *key, int key_len) { HMAC_CTX *state = (HMAC_CTX *)statev; if (HMAC_Init_ex(state, key, key_len, EVP_sha1(), NULL) == 0) return srtp_err_status_auth_fail; return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_update (void *statev, const uint8_t *message, int msg_octets) { HMAC_CTX *state = (HMAC_CTX *)statev; debug_print(srtp_mod_hmac, "input: %s", srtp_octet_string_hex_string(message, msg_octets)); if (HMAC_Update(state, message, msg_octets) == 0) return srtp_err_status_auth_fail; return srtp_err_status_ok; } static srtp_err_status_t srtp_hmac_compute (void *statev, const uint8_t *message, int msg_octets, int tag_len, uint8_t *result) { HMAC_CTX *state = (HMAC_CTX *)statev; uint8_t hash_value[SHA1_DIGEST_SIZE]; int i; unsigned int len; /* check tag length, return error if we can't provide the value expected */ if (tag_len > SHA1_DIGEST_SIZE) { return srtp_err_status_bad_param; } /* hash message, copy output into H */ if (HMAC_Update(state, message, msg_octets) == 0) return srtp_err_status_auth_fail; if (HMAC_Final(state, hash_value, &len) == 0) return srtp_err_status_auth_fail; if (len < tag_len) return srtp_err_status_auth_fail; /* copy hash_value to *result */ for (i = 0; i < tag_len; i++) { result[i] = hash_value[i]; } debug_print(srtp_mod_hmac, "output: %s", srtp_octet_string_hex_string(hash_value, tag_len)); return srtp_err_status_ok; } /* begin test case 0 */ static const uint8_t srtp_hmac_test_case_0_key[SHA1_DIGEST_SIZE] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b }; static const uint8_t srtp_hmac_test_case_0_data[8] = { 0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65 /* "Hi There" */ }; static const uint8_t srtp_hmac_test_case_0_tag[SHA1_DIGEST_SIZE] = { 0xb6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64, 0xe2, 0x8b, 0xc0, 0xb6, 0xfb, 0x37, 0x8c, 0x8e, 0xf1, 0x46, 0xbe, 0x00 }; static const srtp_auth_test_case_t srtp_hmac_test_case_0 = { sizeof(srtp_hmac_test_case_0_key), /* octets in key */ srtp_hmac_test_case_0_key, /* key */ sizeof(srtp_hmac_test_case_0_data), /* octets in data */ srtp_hmac_test_case_0_data, /* data */ sizeof(srtp_hmac_test_case_0_tag), /* octets in tag */ srtp_hmac_test_case_0_tag, /* tag */ NULL /* pointer to next testcase */ }; /* end test case 0 */ static const char srtp_hmac_description[] = "hmac sha-1 authentication function"; /* * srtp_auth_type_t hmac is the hmac metaobject */ const srtp_auth_type_t srtp_hmac = { srtp_hmac_alloc, srtp_hmac_dealloc, srtp_hmac_init, srtp_hmac_compute, srtp_hmac_update, srtp_hmac_start, srtp_hmac_description, &srtp_hmac_test_case_0, SRTP_HMAC_SHA1 }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/hash/null_auth.c000066400000000000000000000121411304141034500241540ustar00rootroot00000000000000/* * null_auth.c * * implements the do-nothing auth algorithm * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "null_auth.h" #include "err.h" /* for srtp_debug */ #include "alloc.h" /* null_auth uses the auth debug module */ extern srtp_debug_module_t srtp_mod_auth; static srtp_err_status_t srtp_null_auth_alloc (srtp_auth_t **a, int key_len, int out_len) { extern const srtp_auth_type_t srtp_null_auth; uint8_t *pointer; debug_print(srtp_mod_auth, "allocating auth func with key length %d", key_len); debug_print(srtp_mod_auth, " tag length %d", out_len); /* allocate memory for auth and srtp_null_auth_ctx_t structures */ pointer = (uint8_t*)srtp_crypto_alloc(sizeof(srtp_null_auth_ctx_t) + sizeof(srtp_auth_t)); if (pointer == NULL) { return srtp_err_status_alloc_fail; } /* set pointers */ *a = (srtp_auth_t*)pointer; (*a)->type = &srtp_null_auth; (*a)->state = pointer + sizeof(srtp_auth_t); (*a)->out_len = out_len; (*a)->prefix_len = out_len; (*a)->key_len = key_len; return srtp_err_status_ok; } static srtp_err_status_t srtp_null_auth_dealloc (srtp_auth_t *a) { extern const srtp_auth_type_t srtp_null_auth; /* zeroize entire state*/ octet_string_set_to_zero((uint8_t*)a, sizeof(srtp_null_auth_ctx_t) + sizeof(srtp_auth_t)); /* free memory */ srtp_crypto_free(a); return srtp_err_status_ok; } static srtp_err_status_t srtp_null_auth_init (void *statev, const uint8_t *key, int key_len) { /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */ /* accept any length of key, and do nothing */ return srtp_err_status_ok; } static srtp_err_status_t srtp_null_auth_compute (void *statev, const uint8_t *message, int msg_octets, int tag_len, uint8_t *result) { /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */ return srtp_err_status_ok; } static srtp_err_status_t srtp_null_auth_update (void *statev, const uint8_t *message, int msg_octets) { /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */ return srtp_err_status_ok; } static srtp_err_status_t srtp_null_auth_start (void *statev) { /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */ return srtp_err_status_ok; } /* * srtp_auth_type_t - defines description, test case, and null_auth * metaobject */ /* begin test case 0 */ static const srtp_auth_test_case_t srtp_null_auth_test_case_0 = { 0, /* octets in key */ NULL, /* key */ 0, /* octets in data */ NULL, /* data */ 0, /* octets in tag */ NULL, /* tag */ NULL /* pointer to next testcase */ }; /* end test case 0 */ static const char srtp_null_auth_description[] = "null authentication function"; const srtp_auth_type_t srtp_null_auth = { srtp_null_auth_alloc, srtp_null_auth_dealloc, srtp_null_auth_init, srtp_null_auth_compute, srtp_null_auth_update, srtp_null_auth_start, srtp_null_auth_description, &srtp_null_auth_test_case_0, SRTP_NULL_AUTH }; libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/hash/sha1.c000066400000000000000000000302621304141034500230210ustar00rootroot00000000000000/* * sha1.c * * an implementation of the Secure Hash Algorithm v.1 (SHA-1), * specified in FIPS 180-1 * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "sha1.h" srtp_debug_module_t srtp_mod_sha1 = { 0, /* debugging is off by default */ "sha-1" /* printable module name */ }; /* SN == Rotate left N bits */ #define S1(X) ((X << 1) | (X >> 31)) #define S5(X) ((X << 5) | (X >> 27)) #define S30(X) ((X << 30) | (X >> 2)) #define f0(B, C, D) ((B & C) | (~B & D)) #define f1(B, C, D) (B ^ C ^ D) #define f2(B, C, D) ((B & C) | (B & D) | (C & D)) #define f3(B, C, D) (B ^ C ^ D) /* * nota bene: the variable K0 appears in the curses library, so we * give longer names to these variables to avoid spurious warnings * on systems that uses curses */ uint32_t SHA_K0 = 0x5A827999; /* Kt for 0 <= t <= 19 */ uint32_t SHA_K1 = 0x6ED9EBA1; /* Kt for 20 <= t <= 39 */ uint32_t SHA_K2 = 0x8F1BBCDC; /* Kt for 40 <= t <= 59 */ uint32_t SHA_K3 = 0xCA62C1D6; /* Kt for 60 <= t <= 79 */ void srtp_sha1 (const uint8_t *msg, int octets_in_msg, uint32_t hash_value[5]) { srtp_sha1_ctx_t ctx; srtp_sha1_init(&ctx); srtp_sha1_update(&ctx, msg, octets_in_msg); srtp_sha1_final(&ctx, hash_value); } /* * srtp_sha1_core(M, H) computes the core compression function, where M is * the next part of the message (in network byte order) and H is the * intermediate state { H0, H1, ...} (in host byte order) * * this function does not do any of the padding required in the * complete SHA1 function * * this function is used in the SEAL 3.0 key setup routines * (crypto/cipher/seal.c) */ void srtp_sha1_core (const uint32_t M[16], uint32_t hash_value[5]) { uint32_t H0; uint32_t H1; uint32_t H2; uint32_t H3; uint32_t H4; uint32_t W[80]; uint32_t A, B, C, D, E, TEMP; int t; /* copy hash_value into H0, H1, H2, H3, H4 */ H0 = hash_value[0]; H1 = hash_value[1]; H2 = hash_value[2]; H3 = hash_value[3]; H4 = hash_value[4]; /* copy/xor message into array */ W[0] = be32_to_cpu(M[0]); W[1] = be32_to_cpu(M[1]); W[2] = be32_to_cpu(M[2]); W[3] = be32_to_cpu(M[3]); W[4] = be32_to_cpu(M[4]); W[5] = be32_to_cpu(M[5]); W[6] = be32_to_cpu(M[6]); W[7] = be32_to_cpu(M[7]); W[8] = be32_to_cpu(M[8]); W[9] = be32_to_cpu(M[9]); W[10] = be32_to_cpu(M[10]); W[11] = be32_to_cpu(M[11]); W[12] = be32_to_cpu(M[12]); W[13] = be32_to_cpu(M[13]); W[14] = be32_to_cpu(M[14]); W[15] = be32_to_cpu(M[15]); TEMP = W[13] ^ W[8] ^ W[2] ^ W[0]; W[16] = S1(TEMP); TEMP = W[14] ^ W[9] ^ W[3] ^ W[1]; W[17] = S1(TEMP); TEMP = W[15] ^ W[10] ^ W[4] ^ W[2]; W[18] = S1(TEMP); TEMP = W[16] ^ W[11] ^ W[5] ^ W[3]; W[19] = S1(TEMP); TEMP = W[17] ^ W[12] ^ W[6] ^ W[4]; W[20] = S1(TEMP); TEMP = W[18] ^ W[13] ^ W[7] ^ W[5]; W[21] = S1(TEMP); TEMP = W[19] ^ W[14] ^ W[8] ^ W[6]; W[22] = S1(TEMP); TEMP = W[20] ^ W[15] ^ W[9] ^ W[7]; W[23] = S1(TEMP); TEMP = W[21] ^ W[16] ^ W[10] ^ W[8]; W[24] = S1(TEMP); TEMP = W[22] ^ W[17] ^ W[11] ^ W[9]; W[25] = S1(TEMP); TEMP = W[23] ^ W[18] ^ W[12] ^ W[10]; W[26] = S1(TEMP); TEMP = W[24] ^ W[19] ^ W[13] ^ W[11]; W[27] = S1(TEMP); TEMP = W[25] ^ W[20] ^ W[14] ^ W[12]; W[28] = S1(TEMP); TEMP = W[26] ^ W[21] ^ W[15] ^ W[13]; W[29] = S1(TEMP); TEMP = W[27] ^ W[22] ^ W[16] ^ W[14]; W[30] = S1(TEMP); TEMP = W[28] ^ W[23] ^ W[17] ^ W[15]; W[31] = S1(TEMP); /* process the remainder of the array */ for (t = 32; t < 80; t++) { TEMP = W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16]; W[t] = S1(TEMP); } A = H0; B = H1; C = H2; D = H3; E = H4; for (t = 0; t < 20; t++) { TEMP = S5(A) + f0(B, C, D) + E + W[t] + SHA_K0; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 40; t++) { TEMP = S5(A) + f1(B, C, D) + E + W[t] + SHA_K1; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 60; t++) { TEMP = S5(A) + f2(B, C, D) + E + W[t] + SHA_K2; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 80; t++) { TEMP = S5(A) + f3(B, C, D) + E + W[t] + SHA_K3; E = D; D = C; C = S30(B); B = A; A = TEMP; } hash_value[0] = H0 + A; hash_value[1] = H1 + B; hash_value[2] = H2 + C; hash_value[3] = H3 + D; hash_value[4] = H4 + E; return; } void srtp_sha1_init (srtp_sha1_ctx_t *ctx) { /* initialize state vector */ ctx->H[0] = 0x67452301; ctx->H[1] = 0xefcdab89; ctx->H[2] = 0x98badcfe; ctx->H[3] = 0x10325476; ctx->H[4] = 0xc3d2e1f0; /* indicate that message buffer is empty */ ctx->octets_in_buffer = 0; /* reset message bit-count to zero */ ctx->num_bits_in_msg = 0; } void srtp_sha1_update (srtp_sha1_ctx_t *ctx, const uint8_t *msg, int octets_in_msg) { int i; uint8_t *buf = (uint8_t*)ctx->M; /* update message bit-count */ ctx->num_bits_in_msg += octets_in_msg * 8; /* loop over 16-word blocks of M */ while (octets_in_msg > 0) { if (octets_in_msg + ctx->octets_in_buffer >= 64) { /* * copy words of M into msg buffer until that buffer is full, * converting them into host byte order as needed */ octets_in_msg -= (64 - ctx->octets_in_buffer); for (i = ctx->octets_in_buffer; i < 64; i++) { buf[i] = *msg++; } ctx->octets_in_buffer = 0; /* process a whole block */ debug_print(srtp_mod_sha1, "(update) running srtp_sha1_core()", NULL); srtp_sha1_core(ctx->M, ctx->H); } else { debug_print(srtp_mod_sha1, "(update) not running srtp_sha1_core()", NULL); for (i = ctx->octets_in_buffer; i < (ctx->octets_in_buffer + octets_in_msg); i++) { buf[i] = *msg++; } ctx->octets_in_buffer += octets_in_msg; octets_in_msg = 0; } } } /* * srtp_sha1_final(ctx, output) computes the result for ctx and copies it * into the twenty octets located at *output */ void srtp_sha1_final (srtp_sha1_ctx_t *ctx, uint32_t *output) { uint32_t A, B, C, D, E, TEMP; uint32_t W[80]; int i, t; /* * process the remaining octets_in_buffer, padding and terminating as * necessary */ { int tail = ctx->octets_in_buffer % 4; /* copy/xor message into array */ for (i = 0; i < (ctx->octets_in_buffer + 3) / 4; i++) { W[i] = be32_to_cpu(ctx->M[i]); } /* set the high bit of the octet immediately following the message */ switch (tail) { case (3): W[i - 1] = (be32_to_cpu(ctx->M[i - 1]) & 0xffffff00) | 0x80; W[i] = 0x0; break; case (2): W[i - 1] = (be32_to_cpu(ctx->M[i - 1]) & 0xffff0000) | 0x8000; W[i] = 0x0; break; case (1): W[i - 1] = (be32_to_cpu(ctx->M[i - 1]) & 0xff000000) | 0x800000; W[i] = 0x0; break; case (0): W[i] = 0x80000000; break; } /* zeroize remaining words */ for (i++; i < 15; i++) { W[i] = 0x0; } /* * if there is room at the end of the word array, then set the * last word to the bit-length of the message; otherwise, set that * word to zero and then we need to do one more run of the * compression algo. */ if (ctx->octets_in_buffer < 56) { W[15] = ctx->num_bits_in_msg; } else if (ctx->octets_in_buffer < 60) { W[15] = 0x0; } /* process the word array */ for (t = 16; t < 80; t++) { TEMP = W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16]; W[t] = S1(TEMP); } A = ctx->H[0]; B = ctx->H[1]; C = ctx->H[2]; D = ctx->H[3]; E = ctx->H[4]; for (t = 0; t < 20; t++) { TEMP = S5(A) + f0(B, C, D) + E + W[t] + SHA_K0; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 40; t++) { TEMP = S5(A) + f1(B, C, D) + E + W[t] + SHA_K1; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 60; t++) { TEMP = S5(A) + f2(B, C, D) + E + W[t] + SHA_K2; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 80; t++) { TEMP = S5(A) + f3(B, C, D) + E + W[t] + SHA_K3; E = D; D = C; C = S30(B); B = A; A = TEMP; } ctx->H[0] += A; ctx->H[1] += B; ctx->H[2] += C; ctx->H[3] += D; ctx->H[4] += E; } debug_print(srtp_mod_sha1, "(final) running srtp_sha1_core()", NULL); if (ctx->octets_in_buffer >= 56) { debug_print(srtp_mod_sha1, "(final) running srtp_sha1_core() again", NULL); /* we need to do one final run of the compression algo */ /* * set initial part of word array to zeros, and set the * final part to the number of bits in the message */ for (i = 0; i < 15; i++) { W[i] = 0x0; } W[15] = ctx->num_bits_in_msg; /* process the word array */ for (t = 16; t < 80; t++) { TEMP = W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16]; W[t] = S1(TEMP); } A = ctx->H[0]; B = ctx->H[1]; C = ctx->H[2]; D = ctx->H[3]; E = ctx->H[4]; for (t = 0; t < 20; t++) { TEMP = S5(A) + f0(B, C, D) + E + W[t] + SHA_K0; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 40; t++) { TEMP = S5(A) + f1(B, C, D) + E + W[t] + SHA_K1; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 60; t++) { TEMP = S5(A) + f2(B, C, D) + E + W[t] + SHA_K2; E = D; D = C; C = S30(B); B = A; A = TEMP; } for (; t < 80; t++) { TEMP = S5(A) + f3(B, C, D) + E + W[t] + SHA_K3; E = D; D = C; C = S30(B); B = A; A = TEMP; } ctx->H[0] += A; ctx->H[1] += B; ctx->H[2] += C; ctx->H[3] += D; ctx->H[4] += E; } /* copy result into output buffer */ output[0] = be32_to_cpu(ctx->H[0]); output[1] = be32_to_cpu(ctx->H[1]); output[2] = be32_to_cpu(ctx->H[2]); output[3] = be32_to_cpu(ctx->H[3]); output[4] = be32_to_cpu(ctx->H[4]); /* indicate that message buffer in context is empty */ ctx->octets_in_buffer = 0; return; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/000077500000000000000000000000001304141034500225165ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/aes.h000066400000000000000000000045661304141034500234520ustar00rootroot00000000000000/* * aes.h * * header file for the AES block cipher * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef _AES_H #define _AES_H #include "datatypes.h" #include "err.h" #ifdef __cplusplus extern "C" { #endif /* aes internals */ typedef struct { v128_t round[15]; int num_rounds; } srtp_aes_expanded_key_t; srtp_err_status_t srtp_aes_expand_encryption_key( const uint8_t *key, int key_len, srtp_aes_expanded_key_t *expanded_key); srtp_err_status_t srtp_aes_expand_decryption_key( const uint8_t *key, int key_len, srtp_aes_expanded_key_t *expanded_key); void srtp_aes_encrypt(v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key); void srtp_aes_decrypt(v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key); #ifdef __cplusplus } #endif #endif /* _AES_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/aes_gcm_ossl.h000066400000000000000000000037671304141034500253420ustar00rootroot00000000000000/* * aes_gcm_ossl.h * * Header for AES Galois Counter Mode. * * John A. Foley * Cisco Systems, Inc. * */ /* * * Copyright (c) 2013, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef AES_GCM_OSSL_H #define AES_GCM_OSSL_H #include "cipher.h" #include "srtp.h" #include "datatypes.h" #include #include typedef struct { int key_size; int tag_len; EVP_CIPHER_CTX* ctx; srtp_cipher_direction_t dir; } srtp_aes_gcm_ctx_t; #endif /* AES_GCM_OSSL_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/aes_icm.h000066400000000000000000000044541304141034500242760ustar00rootroot00000000000000/* * aes_icm.h * * Header for AES Integer Counter Mode. * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef AES_ICM_H #define AES_ICM_H #include "aes.h" #include "cipher.h" typedef struct { v128_t counter; /* holds the counter value */ v128_t offset; /* initial offset value */ v128_t keystream_buffer; /* buffers bytes of keystream */ srtp_aes_expanded_key_t expanded_key; /* the cipher key */ int bytes_in_buffer; /* number of unused bytes in buffer */ int key_size; /* AES key size + 14 byte SALT */ } srtp_aes_icm_ctx_t; #endif /* AES_ICM_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/aes_icm_ossl.h000066400000000000000000000052621304141034500253340ustar00rootroot00000000000000/* * aes_icm.h * * Header for AES Integer Counter Mode. * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2005,2012, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef AES_ICM_H #define AES_ICM_H #include "cipher.h" #include "datatypes.h" #include #include #ifdef OPENSSL_IS_BORINGSSL // BoringSSL doesn't support AES-192, cipher will be disabled #define SRTP_NO_AES192 #endif #define SRTP_SALT_SIZE 14 #define SRTP_AES_128_KEYSIZE AES_BLOCK_SIZE #define SRTP_AES_256_KEYSIZE AES_BLOCK_SIZE * 2 #define SRTP_AES_128_KEYSIZE_WSALT SRTP_AES_128_KEYSIZE + SRTP_SALT_SIZE #define SRTP_AES_256_KEYSIZE_WSALT SRTP_AES_256_KEYSIZE + SRTP_SALT_SIZE #ifndef SRTP_NO_AES192 #define SRTP_AES_192_KEYSIZE AES_BLOCK_SIZE + AES_BLOCK_SIZE / 2 #define SRTP_AES_192_KEYSIZE_WSALT SRTP_AES_192_KEYSIZE + SRTP_SALT_SIZE #endif typedef struct { v128_t counter; /* holds the counter value */ v128_t offset; /* initial offset value */ int key_size; EVP_CIPHER_CTX* ctx; } srtp_aes_icm_ctx_t; #endif /* AES_ICM_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/alloc.h000066400000000000000000000037221304141034500237650ustar00rootroot00000000000000/* * alloc.h * * interface to memory allocation and deallocation, with optional debugging * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef CRYPTO_ALLOC_H #define CRYPTO_ALLOC_H #include "datatypes.h" #ifdef __cplusplus extern "C" { #endif void * srtp_crypto_alloc(size_t size); void srtp_crypto_free(void *ptr); #ifdef __cplusplus } #endif #endif /* CRYPTO_ALLOC_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/auth.h000066400000000000000000000137521304141034500236400ustar00rootroot00000000000000/* * auth.h * * common interface to authentication functions * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef AUTH_H #define AUTH_H #include "srtp.h" #include "crypto_types.h" /* for values of auth_type_id_t */ #ifdef __cplusplus extern "C" { #endif typedef const struct srtp_auth_type_t *srtp_auth_type_pointer; typedef struct srtp_auth_t *srtp_auth_pointer_t; typedef srtp_err_status_t (*srtp_auth_alloc_func) (srtp_auth_pointer_t *ap, int key_len, int out_len); typedef srtp_err_status_t (*srtp_auth_init_func) (void *state, const uint8_t *key, int key_len); typedef srtp_err_status_t (*srtp_auth_dealloc_func)(srtp_auth_pointer_t ap); typedef srtp_err_status_t (*srtp_auth_compute_func) (void *state, const uint8_t *buffer, int octets_to_auth, int tag_len, uint8_t *tag); typedef srtp_err_status_t (*srtp_auth_update_func) (void *state, const uint8_t *buffer, int octets_to_auth); typedef srtp_err_status_t (*srtp_auth_start_func)(void *state); /* some syntactic sugar on these function types */ #define srtp_auth_type_alloc(at, a, klen, outlen) \ ((at)->alloc((a), (klen), (outlen))) #define srtp_auth_init(a, key) \ (((a)->type)->init((a)->state, (key), ((a)->key_len))) #define srtp_auth_compute(a, buf, len, res) \ (((a)->type)->compute((a)->state, (buf), (len), (a)->out_len, (res))) #define srtp_auth_update(a, buf, len) \ (((a)->type)->update((a)->state, (buf), (len))) #define srtp_auth_start(a)(((a)->type)->start((a)->state)) #define srtp_auth_dealloc(c) (((c)->type)->dealloc(c)) /* functions to get information about a particular auth_t */ int srtp_auth_get_key_length(const struct srtp_auth_t *a); int srtp_auth_get_tag_length(const struct srtp_auth_t *a); int srtp_auth_get_prefix_length(const struct srtp_auth_t *a); /* * srtp_auth_test_case_t is a (list of) key/message/tag values that are * known to be correct for a particular cipher. this data can be used * to test an implementation in an on-the-fly self test of the * correctness of the implementation. (see the srtp_auth_type_self_test() * function below) */ typedef struct srtp_auth_test_case_t { int key_length_octets; /* octets in key */ const uint8_t *key; /* key */ int data_length_octets; /* octets in data */ const uint8_t *data; /* data */ int tag_length_octets; /* octets in tag */ const uint8_t *tag; /* tag */ const struct srtp_auth_test_case_t *next_test_case; /* pointer to next testcase */ } srtp_auth_test_case_t; /* srtp_auth_type_t */ typedef struct srtp_auth_type_t { srtp_auth_alloc_func alloc; srtp_auth_dealloc_func dealloc; srtp_auth_init_func init; srtp_auth_compute_func compute; srtp_auth_update_func update; srtp_auth_start_func start; const char *description; const srtp_auth_test_case_t *test_data; srtp_auth_type_id_t id; } srtp_auth_type_t; typedef struct srtp_auth_t { const srtp_auth_type_t *type; void *state; int out_len; /* length of output tag in octets */ int key_len; /* length of key in octets */ int prefix_len; /* length of keystream prefix */ } srtp_auth_t; /* * srtp_auth_type_self_test() tests an auth_type against test cases * provided in an array of values of key/message/tag that is known to * be good */ srtp_err_status_t srtp_auth_type_self_test(const srtp_auth_type_t *at); /* * srtp_auth_type_test() tests an auth_type against external test cases * provided in an array of values of key/message/tag that is known to * be good */ srtp_err_status_t srtp_auth_type_test(const srtp_auth_type_t *at, const srtp_auth_test_case_t *test_data); /* * srtp_replace_auth_type(ct, id) * * replaces srtp's kernel's auth type implementation for the auth_type id * with a new one passed in externally. The new auth type must pass all the * existing auth_type's self tests as well as its own. */ srtp_err_status_t srtp_replace_auth_type(const srtp_auth_type_t *ct, srtp_auth_type_id_t id); #ifdef __cplusplus } #endif #endif /* AUTH_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/cipher.h000066400000000000000000000207521304141034500241470ustar00rootroot00000000000000/* * cipher.h * * common interface to ciphers * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef CIPHER_H #define CIPHER_H #include "srtp.h" #include "crypto_types.h" /* for values of cipher_type_id_t */ #ifdef __cplusplus extern "C" { #endif /* * srtp_cipher_direction_t defines a particular cipher operation. * * A srtp_cipher_direction_t is an enum that describes a particular cipher * operation, i.e. encryption or decryption. For some ciphers, this * distinction does not matter, but for others, it is essential. */ typedef enum { srtp_direction_encrypt, /**< encryption (convert plaintext to ciphertext) */ srtp_direction_decrypt, /**< decryption (convert ciphertext to plaintext) */ srtp_direction_any /**< encryption or decryption */ } srtp_cipher_direction_t; /* * the srtp_cipher_pointer_t definition is needed * as srtp_cipher_t is not yet defined */ typedef struct srtp_cipher_t *srtp_cipher_pointer_t; /* * a srtp_cipher_alloc_func_t allocates (but does not initialize) a srtp_cipher_t */ typedef srtp_err_status_t (*srtp_cipher_alloc_func_t) (srtp_cipher_pointer_t *cp, int key_len, int tag_len); /* * a srtp_cipher_init_func_t [re-]initializes a cipher_t with a given key */ typedef srtp_err_status_t (*srtp_cipher_init_func_t) (void *state, const uint8_t *key); /* a srtp_cipher_dealloc_func_t de-allocates a cipher_t */ typedef srtp_err_status_t (*srtp_cipher_dealloc_func_t)(srtp_cipher_pointer_t cp); /* * a srtp_cipher_set_aad_func_t processes the AAD data for AEAD ciphers */ typedef srtp_err_status_t (*srtp_cipher_set_aad_func_t) (void *state, const uint8_t *aad, uint32_t aad_len); /* a srtp_cipher_encrypt_func_t encrypts data in-place */ typedef srtp_err_status_t (*srtp_cipher_encrypt_func_t) (void *state, uint8_t *buffer, unsigned int *octets_to_encrypt); /* a srtp_cipher_decrypt_func_t decrypts data in-place */ typedef srtp_err_status_t (*srtp_cipher_decrypt_func_t) (void *state, uint8_t *buffer, unsigned int *octets_to_decrypt); /* * a srtp_cipher_set_iv_func_t function sets the current initialization vector */ typedef srtp_err_status_t (*srtp_cipher_set_iv_func_t) (void *state, uint8_t *iv, srtp_cipher_direction_t direction); /* * a cipher_get_tag_func_t function is used to get the authentication * tag that was calculated by an AEAD cipher. */ typedef srtp_err_status_t (*srtp_cipher_get_tag_func_t) (void *state, uint8_t *tag, uint32_t *len); /* * srtp_cipher_test_case_t is a (list of) key, salt, plaintext, ciphertext, * and aad values that are known to be correct for a * particular cipher. this data can be used to test an implementation * in an on-the-fly self test of the correctness of the implementation. * (see the srtp_cipher_type_self_test() function below) */ typedef struct srtp_cipher_test_case_t { int key_length_octets; /* octets in key */ const uint8_t *key; /* key */ uint8_t *idx; /* packet index */ int plaintext_length_octets; /* octets in plaintext */ const uint8_t *plaintext; /* plaintext */ int ciphertext_length_octets; /* octets in plaintext */ const uint8_t *ciphertext; /* ciphertext */ int aad_length_octets; /* octets in AAD */ const uint8_t *aad; /* AAD */ int tag_length_octets; /* Length of AEAD tag */ const struct srtp_cipher_test_case_t *next_test_case; /* pointer to next testcase */ } srtp_cipher_test_case_t; /* srtp_cipher_type_t defines the 'metadata' for a particular cipher type */ typedef struct srtp_cipher_type_t { srtp_cipher_alloc_func_t alloc; srtp_cipher_dealloc_func_t dealloc; srtp_cipher_init_func_t init; srtp_cipher_set_aad_func_t set_aad; srtp_cipher_encrypt_func_t encrypt; srtp_cipher_encrypt_func_t decrypt; srtp_cipher_set_iv_func_t set_iv; srtp_cipher_get_tag_func_t get_tag; const char *description; const srtp_cipher_test_case_t *test_data; srtp_cipher_type_id_t id; } srtp_cipher_type_t; /* * srtp_cipher_t defines an instantiation of a particular cipher, with fixed * key length, key and salt values */ typedef struct srtp_cipher_t { const srtp_cipher_type_t *type; void *state; int key_len; int algorithm; } srtp_cipher_t; /* some bookkeeping functions */ int srtp_cipher_get_key_length(const srtp_cipher_t *c); /* * srtp_cipher_type_self_test() tests a cipher against test cases provided in * an array of values of key/srtp_xtd_seq_num_t/plaintext/ciphertext * that is known to be good */ srtp_err_status_t srtp_cipher_type_self_test(const srtp_cipher_type_t *ct); /* * srtp_cipher_type_test() tests a cipher against external test cases provided in * an array of values of key/srtp_xtd_seq_num_t/plaintext/ciphertext * that is known to be good */ srtp_err_status_t srtp_cipher_type_test(const srtp_cipher_type_t *ct, const srtp_cipher_test_case_t *test_data); /* * srtp_cipher_bits_per_second(c, l, t) computes (an estimate of) the * number of bits that a cipher implementation can encrypt in a second * * c is a cipher (which MUST be allocated and initialized already), l * is the length in octets of the test data to be encrypted, and t is * the number of trials * * if an error is encountered, then the value 0 is returned */ uint64_t srtp_cipher_bits_per_second(srtp_cipher_t *c, int octets_in_buffer, int num_trials); srtp_err_status_t srtp_cipher_type_alloc(const srtp_cipher_type_t *ct, srtp_cipher_t **c, int key_len, int tlen); srtp_err_status_t srtp_cipher_dealloc(srtp_cipher_t *c); srtp_err_status_t srtp_cipher_init(srtp_cipher_t *c, const uint8_t *key); srtp_err_status_t srtp_cipher_set_iv(srtp_cipher_t *c, uint8_t *iv, int direction); srtp_err_status_t srtp_cipher_output(srtp_cipher_t *c, uint8_t *buffer, uint32_t *num_octets_to_output); srtp_err_status_t srtp_cipher_encrypt(srtp_cipher_t *c, uint8_t *buffer, uint32_t *num_octets_to_output); srtp_err_status_t srtp_cipher_decrypt(srtp_cipher_t *c, uint8_t *buffer, uint32_t *num_octets_to_output); srtp_err_status_t srtp_cipher_get_tag(srtp_cipher_t *c, uint8_t *buffer, uint32_t *tag_len); srtp_err_status_t srtp_cipher_set_aad(srtp_cipher_t *c, const uint8_t *aad, uint32_t aad_len); /* * srtp_replace_cipher_type(ct, id) * * replaces srtp's existing cipher implementation for the cipher_type id * with a new one passed in externally. The new cipher must pass all the * existing cipher_type's self tests as well as its own. */ srtp_err_status_t srtp_replace_cipher_type(const srtp_cipher_type_t *ct, srtp_cipher_type_id_t id); #ifdef __cplusplus } #endif #endif /* CIPHER_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/crypto_kernel.h000066400000000000000000000145661304141034500255630ustar00rootroot00000000000000/* * crypto_kernel.h * * header for the cryptographic kernel * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef CRYPTO_KERNEL #define CRYPTO_KERNEL #include "cipher.h" #include "auth.h" #include "err.h" #include "crypto_types.h" #include "key.h" #ifdef __cplusplus extern "C" { #endif /* * crypto_kernel_state_t defines the possible states: * * insecure - not yet initialized * secure - initialized and passed self-tests */ typedef enum { srtp_crypto_kernel_state_insecure, srtp_crypto_kernel_state_secure } srtp_crypto_kernel_state_t; /* * linked list of cipher types */ typedef struct srtp_kernel_cipher_type { srtp_cipher_type_id_t id; const srtp_cipher_type_t *cipher_type; struct srtp_kernel_cipher_type *next; } srtp_kernel_cipher_type_t; /* * linked list of auth types */ typedef struct srtp_kernel_auth_type { srtp_auth_type_id_t id; const srtp_auth_type_t *auth_type; struct srtp_kernel_auth_type *next; } srtp_kernel_auth_type_t; /* * linked list of debug modules */ typedef struct srtp_kernel_debug_module { srtp_debug_module_t *mod; struct srtp_kernel_debug_module *next; } srtp_kernel_debug_module_t; /* * crypto_kernel_t is the data structure for the crypto kernel * * note that there is *exactly one* instance of this data type, * a global variable defined in crypto_kernel.c */ typedef struct { srtp_crypto_kernel_state_t state; /* current state of kernel */ srtp_kernel_cipher_type_t *cipher_type_list; /* list of all cipher types */ srtp_kernel_auth_type_t *auth_type_list; /* list of all auth func types */ srtp_kernel_debug_module_t *debug_module_list; /* list of all debug modules */ } srtp_crypto_kernel_t; /* * srtp_crypto_kernel_t external api */ /* * The function srtp_crypto_kernel_init() initialized the crypto kernel and * runs the self-test operations on the random number generators and * crypto algorithms. Possible return values are: * * srtp_err_status_ok initialization successful * init failure * * If any value other than srtp_err_status_ok is returned, the * crypto_kernel MUST NOT be used. */ srtp_err_status_t srtp_crypto_kernel_init(void); /* * The function srtp_crypto_kernel_shutdown() de-initializes the * crypto_kernel, zeroizes keys and other cryptographic material, and * deallocates any dynamically allocated memory. Possible return * values are: * * srtp_err_status_ok shutdown successful * shutdown failure * */ srtp_err_status_t srtp_crypto_kernel_shutdown(void); /* * The function srtp_crypto_kernel_stats() checks the the crypto_kernel, * running tests on the ciphers, auth funcs, and rng, and prints out a * status report. Possible return values are: * * srtp_err_status_ok all tests were passed * a test failed * */ srtp_err_status_t srtp_crypto_kernel_status(void); /* * srtp_crypto_kernel_list_debug_modules() outputs a list of debugging modules * */ srtp_err_status_t srtp_crypto_kernel_list_debug_modules(void); /* * srtp_crypto_kernel_load_cipher_type() * */ srtp_err_status_t srtp_crypto_kernel_load_cipher_type(const srtp_cipher_type_t *ct, srtp_cipher_type_id_t id); srtp_err_status_t srtp_crypto_kernel_load_auth_type(const srtp_auth_type_t *ct, srtp_auth_type_id_t id); srtp_err_status_t srtp_crypto_kernel_load_debug_module(srtp_debug_module_t *new_dm); /* * srtp_crypto_kernel_alloc_cipher(id, cp, key_len); * * allocates a cipher of type id at location *cp, with key length * key_len octets. Return values are: * * srtp_err_status_ok no problems * srtp_err_status_alloc_fail an allocation failure occured * srtp_err_status_fail couldn't find cipher with identifier 'id' */ srtp_err_status_t srtp_crypto_kernel_alloc_cipher(srtp_cipher_type_id_t id, srtp_cipher_pointer_t *cp, int key_len, int tag_len); /* * srtp_crypto_kernel_alloc_auth(id, ap, key_len, tag_len); * * allocates an auth function of type id at location *ap, with key * length key_len octets and output tag length of tag_len. Return * values are: * * srtp_err_status_ok no problems * srtp_err_status_alloc_fail an allocation failure occured * srtp_err_status_fail couldn't find auth with identifier 'id' */ srtp_err_status_t srtp_crypto_kernel_alloc_auth(srtp_auth_type_id_t id, srtp_auth_pointer_t *ap, int key_len, int tag_len); /* * srtp_crypto_kernel_set_debug_module(mod_name, v) * * sets dynamic debugging to the value v (0 for off, 1 for on) for the * debug module with the name mod_name * * returns srtp_err_status_ok on success, srtp_err_status_fail otherwise */ srtp_err_status_t srtp_crypto_kernel_set_debug_module(char *mod_name, int v); #ifdef __cplusplus } #endif #endif /* CRYPTO_KERNEL */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/crypto_math.h000066400000000000000000000132531304141034500252240ustar00rootroot00000000000000/* * math.h * * crypto math operations and data types * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef MATH_H #define MATH_H #include "datatypes.h" #ifdef __cplusplus extern "C" { #endif unsigned char v32_weight(v32_t a); unsigned char v32_distance(v32_t x, v32_t y); unsigned int v32_dot_product(v32_t a, v32_t b); char * v16_bit_string(v16_t x); char * v32_bit_string(v32_t x); char * v64_bit_string(const v64_t *x); char * octet_hex_string(uint8_t x); char * v16_hex_string(v16_t x); char * v32_hex_string(v32_t x); char * v64_hex_string(const v64_t *x); int hex_char_to_nibble(uint8_t c); int is_hex_string(char *s); v16_t hex_string_to_v16(char *s); v32_t hex_string_to_v32(char *s); v64_t hex_string_to_v64(char *s); /* the matrix A[] is stored in column format, i.e., A[i] is the ith column of the matrix */ uint8_t A_times_x_plus_b(uint8_t A[8], uint8_t x, uint8_t b); void v16_copy_octet_string(v16_t *x, const uint8_t s[2]); void v32_copy_octet_string(v32_t *x, const uint8_t s[4]); void v64_copy_octet_string(v64_t *x, const uint8_t s[8]); void v128_add(v128_t *z, v128_t *x, v128_t *y); int octet_string_is_eq(uint8_t *a, uint8_t *b, int len); void octet_string_set_to_zero(uint8_t *s, int len); /* * the matrix A[] is stored in column format, i.e., A[i] is the ith * column of the matrix */ uint8_t A_times_x_plus_b(uint8_t A[8], uint8_t x, uint8_t b); #if 0 #if WORDS_BIGENDIAN #define _v128_add(z, x, y) { \ uint64_t tmp; \ \ tmp = x->v32[3] + y->v32[3]; \ z->v32[3] = (uint32_t) tmp; \ \ tmp = x->v32[2] + y->v32[2] + (tmp >> 32); \ z->v32[2] = (uint32_t) tmp; \ \ tmp = x->v32[1] + y->v32[1] + (tmp >> 32); \ z->v32[1] = (uint32_t) tmp; \ \ tmp = x->v32[0] + y->v32[0] + (tmp >> 32); \ z->v32[0] = (uint32_t) tmp; \ } #else /* assume little endian architecture */ #define _v128_add(z, x, y) { \ uint64_t tmp; \ \ tmp = htonl(x->v32[3]) + htonl(y->v32[3]); \ z->v32[3] = ntohl((uint32_t) tmp); \ \ tmp = htonl(x->v32[2]) + htonl(y->v32[2]) \ + htonl(tmp >> 32); \ z->v32[2] = ntohl((uint32_t) tmp); \ \ tmp = htonl(x->v32[1]) + htonl(y->v32[1]) \ + htonl(tmp >> 32); \ z->v32[1] = ntohl((uint32_t) tmp); \ \ tmp = htonl(x->v32[0]) + htonl(y->v32[0]) \ + htonl(tmp >> 32); \ z->v32[0] = ntohl((uint32_t) tmp); \ } #endif /* WORDS_BIGENDIAN */ #endif #ifdef DATATYPES_USE_MACROS /* little functions are really macros */ #define v128_set_to_zero(z) _v128_set_to_zero(z) #define v128_copy(z, x) _v128_copy(z, x) #define v128_xor(z, x, y) _v128_xor(z, x, y) #define v128_and(z, x, y) _v128_and(z, x, y) #define v128_or(z, x, y) _v128_or(z, x, y) #define v128_complement(x) _v128_complement(x) #define v128_is_eq(x, y) _v128_is_eq(x, y) #define v128_xor_eq(x, y) _v128_xor_eq(x, y) #define v128_get_bit(x, i) _v128_get_bit(x, i) #define v128_set_bit(x, i) _v128_set_bit(x, i) #define v128_clear_bit(x, i) _v128_clear_bit(x, i) #define v128_set_bit_to(x, i, y) _v128_set_bit_to(x, i, y) #else void v128_set_to_zero(v128_t *x); int v128_is_eq(const v128_t *x, const v128_t *y); void v128_copy(v128_t *x, const v128_t *y); void v128_xor(v128_t *z, v128_t *x, v128_t *y); void v128_and(v128_t *z, v128_t *x, v128_t *y); void v128_or(v128_t *z, v128_t *x, v128_t *y); void v128_complement(v128_t *x); int v128_get_bit(const v128_t *x, int i); void v128_set_bit(v128_t *x, int i) ; void v128_clear_bit(v128_t *x, int i); void v128_set_bit_to(v128_t *x, int i, int y); #endif /* DATATYPES_USE_MACROS */ /* * octet_string_is_eq(a,b, len) returns 1 if the length len strings a * and b are not equal, returns 0 otherwise */ int octet_string_is_eq(uint8_t *a, uint8_t *b, int len); void octet_string_set_to_zero(uint8_t *s, int len); #ifdef __cplusplus } #endif #endif /* MATH_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/crypto_types.h000066400000000000000000000072641304141034500254440ustar00rootroot00000000000000/* * crypto_types.h * * constants for cipher types and auth func types * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef CRYPTO_TYPES_H #define CRYPTO_TYPES_H /* * The null cipher performs no encryption. * * The SRTP_NULL_CIPHER leaves its inputs unaltered, during both the * encryption and decryption operations. This cipher can be chosen * to indicate that no encryption is to be performed. */ #define SRTP_NULL_CIPHER 0 /* * AES Integer Counter Mode (AES ICM) * * AES ICM is the variant of counter mode that is used by Secure RTP. * This cipher uses a 16-, 24-, or 32-octet key concatenated with a * 14-octet offset (or salt) value. */ #define SRTP_AES_ICM 1 /* * AES-128 Integer Counter Mode (AES ICM) * AES-128 ICM is a deprecated alternate name for AES ICM. */ #define SRTP_AES_128_ICM SRTP_AES_ICM /* * AES-192 Integer Counter Mode (AES ICM) * AES-192 ICM is a deprecated alternate name for AES ICM. */ #define SRTP_AES_192_ICM 4 /* * AES-256 Integer Counter Mode (AES ICM) * AES-256 ICM is a deprecated alternate name for AES ICM. */ #define SRTP_AES_256_ICM 5 /* * AES-128_GCM Galois Counter Mode (AES GCM) * * AES-128 GCM is the variant of galois counter mode that is used by * Secure RTP. This cipher uses a 16-octet key. */ #define SRTP_AES_128_GCM 6 /* * AES-256_GCM Galois Counter Mode (AES GCM) * * AES-256 GCM is the variant of galois counter mode that is used by * Secure RTP. This cipher uses a 32-octet key. */ #define SRTP_AES_256_GCM 7 /* * The null authentication function performs no authentication. * * The NULL_AUTH function does nothing, and can be selected to indicate * that authentication should not be performed. */ #define SRTP_NULL_AUTH 0 /* * HMAC-SHA1 * * SRTP_HMAC_SHA1 implements the Hash-based MAC using the NIST Secure * Hash Algorithm version 1 (SHA1). */ #define SRTP_HMAC_SHA1 3 #endif /* CRYPTO_TYPES_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/datatypes.h000066400000000000000000000313371304141034500246740ustar00rootroot00000000000000/* * datatypes.h * * data types for bit vectors and finite fields * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef _DATATYPES_H #define _DATATYPES_H #include "integers.h" /* definitions of uint32_t, et cetera */ #include "alloc.h" #include #include #include #include #ifdef HAVE_NETINET_IN_H # include #elif defined HAVE_WINSOCK2_H # include #endif #ifdef __cplusplus extern "C" { #endif /* if DATATYPES_USE_MACROS is defined, then little functions are macros */ #define DATATYPES_USE_MACROS typedef union { uint8_t v8[2]; uint16_t value; } v16_t; typedef union { uint8_t v8[4]; uint16_t v16[2]; uint32_t value; } v32_t; typedef union { uint8_t v8[8]; uint16_t v16[4]; uint32_t v32[2]; uint64_t value; } v64_t; typedef union { uint8_t v8[16]; uint16_t v16[8]; uint32_t v32[4]; uint64_t v64[2]; } v128_t; typedef union { uint8_t v8[32]; uint16_t v16[16]; uint32_t v32[8]; uint64_t v64[4]; } v256_t; /* some useful and simple math functions */ #define pow_2(X) ( (unsigned int)1 << (X) ) /* 2^X */ #define pow_minus_one(X) ( (X) ? -1 : 1 ) /* (-1)^X */ /* * octet_get_weight(x) returns the hamming weight (number of bits equal to * one) in the octet x */ int octet_get_weight(uint8_t octet); #define MAX_PRINT_STRING_LEN 1024 char * srtp_octet_string_hex_string(const void *str, int length); char * v128_bit_string(v128_t *x); char * v128_hex_string(v128_t *x); void v128_copy_octet_string(v128_t *x, const uint8_t s[16]); void v128_left_shift(v128_t *x, int shift_index); void v128_right_shift(v128_t *x, int shift_index); /* * the following macros define the data manipulation functions * * If DATATYPES_USE_MACROS is defined, then these macros are used * directly (and function call overhead is avoided). Otherwise, * the macros are used through the functions defined in datatypes.c * (and the compiler provides better warnings). */ #define _v128_set_to_zero(x) \ ( \ (x)->v32[0] = 0, \ (x)->v32[1] = 0, \ (x)->v32[2] = 0, \ (x)->v32[3] = 0 \ ) #define _v128_copy(x, y) \ ( \ (x)->v32[0] = (y)->v32[0], \ (x)->v32[1] = (y)->v32[1], \ (x)->v32[2] = (y)->v32[2], \ (x)->v32[3] = (y)->v32[3] \ ) #define _v128_xor(z, x, y) \ ( \ (z)->v32[0] = (x)->v32[0] ^ (y)->v32[0], \ (z)->v32[1] = (x)->v32[1] ^ (y)->v32[1], \ (z)->v32[2] = (x)->v32[2] ^ (y)->v32[2], \ (z)->v32[3] = (x)->v32[3] ^ (y)->v32[3] \ ) #define _v128_and(z, x, y) \ ( \ (z)->v32[0] = (x)->v32[0] & (y)->v32[0], \ (z)->v32[1] = (x)->v32[1] & (y)->v32[1], \ (z)->v32[2] = (x)->v32[2] & (y)->v32[2], \ (z)->v32[3] = (x)->v32[3] & (y)->v32[3] \ ) #define _v128_or(z, x, y) \ ( \ (z)->v32[0] = (x)->v32[0] | (y)->v32[0], \ (z)->v32[1] = (x)->v32[1] | (y)->v32[1], \ (z)->v32[2] = (x)->v32[2] | (y)->v32[2], \ (z)->v32[3] = (x)->v32[3] | (y)->v32[3] \ ) #define _v128_complement(x) \ ( \ (x)->v32[0] = ~(x)->v32[0], \ (x)->v32[1] = ~(x)->v32[1], \ (x)->v32[2] = ~(x)->v32[2], \ (x)->v32[3] = ~(x)->v32[3] \ ) /* ok for NO_64BIT_MATH if it can compare uint64_t's (even as structures) */ #define _v128_is_eq(x, y) \ (((x)->v64[0] == (y)->v64[0]) && ((x)->v64[1] == (y)->v64[1])) #ifdef NO_64BIT_MATH #define _v128_xor_eq(z, x) \ ( \ (z)->v32[0] ^= (x)->v32[0], \ (z)->v32[1] ^= (x)->v32[1], \ (z)->v32[2] ^= (x)->v32[2], \ (z)->v32[3] ^= (x)->v32[3] \ ) #else #define _v128_xor_eq(z, x) \ ( \ (z)->v64[0] ^= (x)->v64[0], \ (z)->v64[1] ^= (x)->v64[1] \ ) #endif /* NOTE! This assumes an odd ordering! */ /* This will not be compatible directly with math on some processors */ /* bit 0 is first 32-bit word, low order bit. in little-endian, that's the first byte of the first 32-bit word. In big-endian, that's the 3rd byte of the first 32-bit word */ /* The get/set bit code is used by the replay code ONLY, and it doesn't really care which bit is which. AES does care which bit is which, but doesn't use the 128-bit get/set or 128-bit shifts */ #define _v128_get_bit(x, bit) \ ( \ ((((x)->v32[(bit) >> 5]) >> ((bit) & 31)) & 1) \ ) #define _v128_set_bit(x, bit) \ ( \ (((x)->v32[(bit) >> 5]) |= ((uint32_t)1 << ((bit) & 31))) \ ) #define _v128_clear_bit(x, bit) \ ( \ (((x)->v32[(bit) >> 5]) &= ~((uint32_t)1 << ((bit) & 31))) \ ) #define _v128_set_bit_to(x, bit, value) \ ( \ (value) ? _v128_set_bit(x, bit) : \ _v128_clear_bit(x, bit) \ ) #if 0 /* nothing uses this */ #ifdef WORDS_BIGENDIAN #define _v128_add(z, x, y) { \ uint64_t tmp; \ \ tmp = x->v32[3] + y->v32[3]; \ z->v32[3] = (uint32_t) tmp; \ \ tmp = x->v32[2] + y->v32[2] + (tmp >> 32); \ z->v32[2] = (uint32_t) tmp; \ \ tmp = x->v32[1] + y->v32[1] + (tmp >> 32); \ z->v32[1] = (uint32_t) tmp; \ \ tmp = x->v32[0] + y->v32[0] + (tmp >> 32); \ z->v32[0] = (uint32_t) tmp; \ } #else /* assume little endian architecture */ #define _v128_add(z, x, y) { \ uint64_t tmp; \ \ tmp = htonl(x->v32[3]) + htonl(y->v32[3]); \ z->v32[3] = ntohl((uint32_t) tmp); \ \ tmp = htonl(x->v32[2]) + htonl(y->v32[2]) \ + htonl(tmp >> 32); \ z->v32[2] = ntohl((uint32_t) tmp); \ \ tmp = htonl(x->v32[1]) + htonl(y->v32[1]) \ + htonl(tmp >> 32); \ z->v32[1] = ntohl((uint32_t) tmp); \ \ tmp = htonl(x->v32[0]) + htonl(y->v32[0]) \ + htonl(tmp >> 32); \ z->v32[0] = ntohl((uint32_t) tmp); \ } #endif /* WORDS_BIGENDIAN */ #endif /* 0 */ #ifdef DATATYPES_USE_MACROS /* little functions are really macros */ #define v128_set_to_zero(z) _v128_set_to_zero(z) #define v128_copy(z, x) _v128_copy(z, x) #define v128_xor(z, x, y) _v128_xor(z, x, y) #define v128_and(z, x, y) _v128_and(z, x, y) #define v128_or(z, x, y) _v128_or(z, x, y) #define v128_complement(x) _v128_complement(x) #define v128_is_eq(x, y) _v128_is_eq(x, y) #define v128_xor_eq(x, y) _v128_xor_eq(x, y) #define v128_get_bit(x, i) _v128_get_bit(x, i) #define v128_set_bit(x, i) _v128_set_bit(x, i) #define v128_clear_bit(x, i) _v128_clear_bit(x, i) #define v128_set_bit_to(x, i, y) _v128_set_bit_to(x, i, y) #else void v128_set_to_zero(v128_t *x); int v128_is_eq(const v128_t *x, const v128_t *y); void v128_copy(v128_t *x, const v128_t *y); void v128_xor(v128_t *z, v128_t *x, v128_t *y); void v128_and(v128_t *z, v128_t *x, v128_t *y); void v128_or(v128_t *z, v128_t *x, v128_t *y); void v128_complement(v128_t *x); int v128_get_bit(const v128_t *x, int i); void v128_set_bit(v128_t *x, int i) ; void v128_clear_bit(v128_t *x, int i); void v128_set_bit_to(v128_t *x, int i, int y); #endif /* DATATYPES_USE_MACROS */ /* * octet_string_is_eq(a, b, len) returns 1 if the length len strings a * and b are not equal. It returns 0 otherwise. The running time of the * comparison depends only on len, making this safe to use for (e.g.) * verifying authentication tags. */ int octet_string_is_eq(uint8_t *a, uint8_t *b, int len); void octet_string_set_to_zero(uint8_t *s, int len); #if defined(HAVE_CONFIG_H) /* * Convert big endian integers to CPU byte order. */ #ifdef WORDS_BIGENDIAN /* Nothing to do. */ # define be32_to_cpu(x) (x) # define be64_to_cpu(x) (x) #elif defined(HAVE_BYTESWAP_H) /* We have (hopefully) optimized versions in byteswap.h */ # include # define be32_to_cpu(x) bswap_32((x)) # define be64_to_cpu(x) bswap_64((x)) #else #if defined(__GNUC__) && defined(HAVE_X86) /* Fall back. */ static inline uint32_t be32_to_cpu(uint32_t v) { /* optimized for x86. */ asm("bswap %0" : "=r" (v) : "0" (v)); return v; } # else /* HAVE_X86 */ # ifdef HAVE_NETINET_IN_H # include # elif defined HAVE_WINSOCK2_H # include # endif # define be32_to_cpu(x) ntohl((x)) # endif /* HAVE_X86 */ static inline uint64_t be64_to_cpu(uint64_t v) { # ifdef NO_64BIT_MATH /* use the make64 functions to do 64-bit math */ v = make64(htonl(low32(v)),htonl(high32(v))); # else /* use the native 64-bit math */ v= (uint64_t)((be32_to_cpu((uint32_t)(v >> 32))) | (((uint64_t)be32_to_cpu((uint32_t)v)) << 32)); # endif return v; } #endif #endif /* WORDS_BIGENDIAN */ /* * functions manipulating bitvector_t * * A bitvector_t consists of an array of words and an integer * representing the number of significant bits stored in the array. * The bits are packed as follows: the least significant bit is that * of word[0], while the most significant bit is the nth most * significant bit of word[m], where length = bits_per_word * m + n. * */ #define bits_per_word 32 #define bytes_per_word 4 typedef struct { uint32_t length; uint32_t *word; } bitvector_t; #define _bitvector_get_bit(v, bit_index) \ ( \ ((((v)->word[((bit_index) >> 5)]) >> ((bit_index) & 31)) & 1) \ ) #define _bitvector_set_bit(v, bit_index) \ ( \ (((v)->word[((bit_index) >> 5)] |= ((uint32_t)1 << ((bit_index) & 31)))) \ ) #define _bitvector_clear_bit(v, bit_index) \ ( \ (((v)->word[((bit_index) >> 5)] &= ~((uint32_t)1 << ((bit_index) & 31)))) \ ) #define _bitvector_get_length(v) \ ( \ ((v)->length) \ ) #ifdef DATATYPES_USE_MACROS /* little functions are really macros */ #define bitvector_get_bit(v, bit_index) _bitvector_get_bit(v, bit_index) #define bitvector_set_bit(v, bit_index) _bitvector_set_bit(v, bit_index) #define bitvector_clear_bit(v, bit_index) _bitvector_clear_bit(v, bit_index) #define bitvector_get_length(v) _bitvector_get_length(v) #else int bitvector_get_bit(const bitvector_t *v, int bit_index); void bitvector_set_bit(bitvector_t *v, int bit_index); void bitvector_clear_bit(bitvector_t *v, int bit_index); unsigned long bitvector_get_length(const bitvector_t *v); #endif int bitvector_alloc(bitvector_t *v, unsigned long length); void bitvector_dealloc(bitvector_t *v); void bitvector_set_to_zero(bitvector_t *x); void bitvector_left_shift(bitvector_t *x, int index); char * bitvector_bit_string(bitvector_t *x, char* buf, int len); #ifdef __cplusplus } #endif #endif /* _DATATYPES_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/err.h000066400000000000000000000073031304141034500234620ustar00rootroot00000000000000/* * err.h * * error status codes * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef ERR_H #define ERR_H #include #include #include "srtp.h" #ifdef __cplusplus extern "C" { #endif /** * @defgroup Error Error Codes * * Error status codes are represented by the enumeration srtp_err_status_t. * * @{ */ /** * @} */ typedef enum { srtp_err_level_emergency = 0, srtp_err_level_alert, srtp_err_level_critical, srtp_err_level_error, srtp_err_level_warning, srtp_err_level_notice, srtp_err_level_info, srtp_err_level_debug, srtp_err_level_none } srtp_err_reporting_level_t; /* * err_reporting_init prepares the error system. If * ERR_REPORTING_SYSLOG is defined, it will open syslog. * * The ident argument is a string that will be prepended to * all syslog messages. It is conventionally argv[0]. */ srtp_err_status_t srtp_err_reporting_init(const char *ident); /* * keydaemon_report_error reports a 'printf' formatted error * string, followed by a an arg list. The priority argument * is equivalent to that defined for syslog. * * Errors will be reported to ERR_REPORTING_FILE, if defined, and to * syslog, if ERR_REPORTING_SYSLOG is defined. * */ void srtp_err_report(int priority, const char *format, ...); /* * debug_module_t defines a debug module */ typedef struct { int on; /* 1 if debugging is on, 0 if it is off */ const char *name; /* printable name for debug module */ } srtp_debug_module_t; #ifdef ENABLE_DEBUGGING #define debug_on(mod) (mod).on = 1 #define debug_off(mod) (mod).on = 0 /* use err_report() to report debug message */ #define debug_print(mod, format, arg) \ if (mod.on) srtp_err_report(srtp_err_level_debug, ("%s: " format "\n"), mod.name, arg) #define debug_print2(mod, format, arg1, arg2) \ if (mod.on) srtp_err_report(srtp_err_level_debug, ("%s: " format "\n"), mod.name, arg1, arg2) #else /* define macros to do nothing */ #define debug_print(mod, format, arg) #define debug_on(mod) #define debug_off(mod) #endif #ifdef __cplusplus } #endif #endif /* ERR_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/hmac.h000066400000000000000000000036031304141034500236010ustar00rootroot00000000000000/* * hmac.h * * interface to hmac srtp_auth_type_t * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2006,2013, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef HMAC_H #define HMAC_H #include "auth.h" #include "sha1.h" typedef struct { uint8_t opad[64]; srtp_sha1_ctx_t ctx; srtp_sha1_ctx_t init_ctx; } srtp_hmac_ctx_t; #endif /* HMAC_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/integers.h000066400000000000000000000110071304141034500245060ustar00rootroot00000000000000/* * integers.h * * defines integer types (or refers to their definitions) * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef INTEGERS_H #define INTEGERS_H /* use standard integer definitions, if they're available */ #ifdef HAVE_STDLIB_H # include #endif #ifdef HAVE_STDINT_H # include #endif #ifdef HAVE_INTTYPES_H # include #endif #ifdef HAVE_SYS_TYPES_H # include #endif #ifdef HAVE_SYS_INT_TYPES_H # include /* this exists on Sun OS */ #endif #ifdef HAVE_MACHINE_TYPES_H # include #endif #ifdef __cplusplus extern "C" { #endif /* Can we do 64 bit integers? */ #if !defined(HAVE_UINT64_T) # if SIZEOF_UNSIGNED_LONG == 8 typedef unsigned long uint64_t; # elif SIZEOF_UNSIGNED_LONG_LONG == 8 typedef unsigned long long uint64_t; # else # define NO_64BIT_MATH 1 # endif #endif /* Reasonable defaults for 32 bit machines - you may need to * edit these definitions for your own machine. */ #ifndef HAVE_UINT8_T typedef unsigned char uint8_t; #endif #ifndef HAVE_UINT16_T typedef unsigned short int uint16_t; #endif #ifndef HAVE_UINT32_T typedef unsigned int uint32_t; #endif #if defined(NO_64BIT_MATH) && defined(HAVE_CONFIG_H) typedef double uint64_t; /* assert that sizeof(double) == 8 */ extern uint64_t make64(uint32_t high, uint32_t low); extern uint32_t high32(uint64_t value); extern uint32_t low32(uint64_t value); #endif /* These macros are to load and store 32-bit values from un-aligned addresses. This is required for processors that do not allow unaligned loads. */ #ifdef ALIGNMENT_32BIT_REQUIRED /* Note that if it's in a variable, you can memcpy it */ #ifdef WORDS_BIGENDIAN #define PUT_32(addr,value) \ { \ ((unsigned char *) (addr))[0] = (value >> 24); \ ((unsigned char *) (addr))[1] = (value >> 16) & 0xff; \ ((unsigned char *) (addr))[2] = (value >> 8) & 0xff; \ ((unsigned char *) (addr))[3] = (value) & 0xff; \ } #define GET_32(addr) ((((unsigned char *) (addr))[0] << 24) | \ (((unsigned char *) (addr))[1] << 16) | \ (((unsigned char *) (addr))[2] << 8) | \ (((unsigned char *) (addr))[3])) #else #define PUT_32(addr,value) \ { \ ((unsigned char *) (addr))[3] = (value >> 24); \ ((unsigned char *) (addr))[2] = (value >> 16) & 0xff; \ ((unsigned char *) (addr))[1] = (value >> 8) & 0xff; \ ((unsigned char *) (addr))[0] = (value) & 0xff; \ } #define GET_32(addr) ((((unsigned char *) (addr))[3] << 24) | \ (((unsigned char *) (addr))[2] << 16) | \ (((unsigned char *) (addr))[1] << 8) | \ (((unsigned char *) (addr))[0])) #endif // WORDS_BIGENDIAN #else #define PUT_32(addr,value) *(((uint32_t *) (addr)) = (value) #define GET_32(addr) (*(((uint32_t *) (addr))) #endif #ifdef __cplusplus } #endif #endif /* INTEGERS_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/key.h000066400000000000000000000051131304141034500234570ustar00rootroot00000000000000/* * key.h * * key usage limits enforcement * * David A. Mcgrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef KEY_H #define KEY_H #include "rdbx.h" /* for srtp_xtd_seq_num_t */ #include "err.h" #ifdef __cplusplus extern "C" { #endif typedef struct srtp_key_limit_ctx_t *srtp_key_limit_t; typedef enum { srtp_key_event_normal, srtp_key_event_soft_limit, srtp_key_event_hard_limit } srtp_key_event_t; srtp_err_status_t srtp_key_limit_set(srtp_key_limit_t key, const srtp_xtd_seq_num_t s); srtp_err_status_t srtp_key_limit_clone(srtp_key_limit_t original, srtp_key_limit_t *new_key); srtp_err_status_t srtp_key_limit_check(const srtp_key_limit_t key); srtp_key_event_t srtp_key_limit_update(srtp_key_limit_t key); typedef enum { srtp_key_state_normal, srtp_key_state_past_soft_limit, srtp_key_state_expired } srtp_key_state_t; typedef struct srtp_key_limit_ctx_t { srtp_xtd_seq_num_t num_left; srtp_key_state_t state; } srtp_key_limit_ctx_t; #ifdef __cplusplus } #endif #endif /* KEY_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/null_auth.h000066400000000000000000000043561304141034500246720ustar00rootroot00000000000000/* * null-auth.h * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NULL_AUTH_H #define NULL_AUTH_H #include "auth.h" #ifdef __cplusplus extern "C" { #endif typedef struct { char foo; } srtp_null_auth_ctx_t; #if 0 srtp_err_status_t srtp_null_auth_alloc(srtp_auth_t **a, int key_len, int out_len); srtp_err_status_t srtp_null_auth_dealloc(srtp_auth_t *a); srtp_err_status_t srtp_null_auth_init(srtp_null_auth_ctx_t *state, const uint8_t *key, int key_len); srtp_err_status_t srtp_null_auth_compute(srtp_null_auth_ctx_t *state, uint8_t *message, int msg_octets, int tag_len, uint8_t *result); #endif #ifdef __cplusplus } #endif #endif /* NULL_AUTH_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/null_cipher.h000066400000000000000000000035751304141034500252050ustar00rootroot00000000000000/* * null-cipher.h * * header file for the null cipher * * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NULL_CIPHER_H #define NULL_CIPHER_H #include "datatypes.h" #include "cipher.h" typedef struct { char foo; /* empty, for now */ } srtp_null_cipher_ctx_t; #endif /* NULL_CIPHER_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/rdb.h000066400000000000000000000071041304141034500234400ustar00rootroot00000000000000/* * replay-database.h * * interface for a replay database for packet security * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef REPLAY_DB_H #define REPLAY_DB_H #include "integers.h" /* for uint32_t */ #include "datatypes.h" /* for v128_t */ #include "err.h" /* for srtp_err_status_t */ #ifdef __cplusplus extern "C" { #endif /* * if the ith least significant bit is one, then the packet index * window_end-i is in the database */ typedef struct { uint32_t window_start; /* packet index of the first bit in bitmask */ v128_t bitmask; } srtp_rdb_t; #define rdb_bits_in_bitmask (8 * sizeof(v128_t)) /* * srtp_rdb_init * * initalizes rdb * * returns srtp_err_status_ok on success, srtp_err_status_t_fail otherwise */ srtp_err_status_t srtp_rdb_init(srtp_rdb_t *rdb); /* * srtp_rdb_check * * checks to see if index appears in rdb * * returns srtp_err_status_fail if the index already appears in rdb, * returns srtp_err_status_ok otherwise */ srtp_err_status_t srtp_rdb_check(const srtp_rdb_t *rdb, uint32_t rdb_index); /* * srtp_rdb_add_index * * adds index to srtp_rdb_t (and does *not* check if index appears in db) * * returns srtp_err_status_ok on success, srtp_err_status_fail otherwise * */ srtp_err_status_t srtp_rdb_add_index(srtp_rdb_t *rdb, uint32_t rdb_index); /* * the functions srtp_rdb_increment() and srtp_rdb_get_value() are for use by * senders, not receivers - DO NOT use these functions on the same * srtp_rdb_t upon which srtp_rdb_add_index is used! */ /* * srtp_rdb_increment(db) increments the sequence number in db, if it is * not too high * * return values: * * srtp_err_status_ok no problem * srtp_err_status_key_expired sequence number too high * */ srtp_err_status_t srtp_rdb_increment(srtp_rdb_t *rdb); /* * srtp_rdb_get_value(db) returns the current sequence number of db */ uint32_t srtp_rdb_get_value(const srtp_rdb_t *rdb); #ifdef __cplusplus } #endif #endif /* REPLAY_DB_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/rdbx.h000066400000000000000000000135431304141034500236340ustar00rootroot00000000000000/* * rdbx.h * * replay database with extended packet indices, using a rollover counter * * David A. McGrew * Cisco Systems, Inc. * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef RDBX_H #define RDBX_H #include "datatypes.h" #include "err.h" #ifdef __cplusplus extern "C" { #endif /* #define ROC_TEST */ #ifndef ROC_TEST typedef uint16_t srtp_sequence_number_t; /* 16 bit sequence number */ typedef uint32_t srtp_rollover_counter_t; /* 32 bit rollover counter */ #else /* use small seq_num and roc datatypes for testing purposes */ typedef unsigned char srtp_sequence_number_t; /* 8 bit sequence number */ typedef uint16_t srtp_rollover_counter_t; /* 16 bit rollover counter */ #endif #define seq_num_median (1 << (8 * sizeof(srtp_sequence_number_t) - 1)) #define seq_num_max (1 << (8 * sizeof(srtp_sequence_number_t))) /* * An rtp_xtd_seq_num_t is a 64-bit unsigned integer used as an 'extended' * sequence number. */ typedef uint64_t srtp_xtd_seq_num_t; /* * An srtp_rdbx_t is a replay database with extended range; it uses an * xtd_seq_num_t and a bitmask of recently received indices. */ typedef struct { srtp_xtd_seq_num_t index; bitvector_t bitmask; } srtp_rdbx_t; /* * srtp_rdbx_init(rdbx_ptr, ws) * * initializes the rdbx pointed to by its argument with the window size ws, * setting the rollover counter and sequence number to zero */ srtp_err_status_t srtp_rdbx_init(srtp_rdbx_t *rdbx, unsigned long ws); /* * srtp_rdbx_dealloc(rdbx_ptr) * * frees memory associated with the rdbx */ srtp_err_status_t srtp_rdbx_dealloc(srtp_rdbx_t *rdbx); /* * srtp_rdbx_estimate_index(rdbx, guess, s) * * given an rdbx and a sequence number s (from a newly arrived packet), * sets the contents of *guess to contain the best guess of the packet * index to which s corresponds, and returns the difference between * *guess and the locally stored synch info */ int srtp_rdbx_estimate_index(const srtp_rdbx_t *rdbx, srtp_xtd_seq_num_t *guess, srtp_sequence_number_t s); /* * srtp_rdbx_check(rdbx, delta); * * srtp_rdbx_check(&r, delta) checks to see if the xtd_seq_num_t * which is at rdbx->window_start + delta is in the rdb * */ srtp_err_status_t srtp_rdbx_check(const srtp_rdbx_t *rdbx, int difference); /* * srtp_replay_add_index(rdbx, delta) * * adds the srtp_xtd_seq_num_t at rdbx->window_start + delta to replay_db * (and does *not* check if that xtd_seq_num_t appears in db) * * this function should be called *only* after replay_check has * indicated that the index does not appear in the rdbx, and a mutex * should protect the rdbx between these calls if necessary. */ srtp_err_status_t srtp_rdbx_add_index(srtp_rdbx_t *rdbx, int delta); /* * srtp_rdbx_set_roc(rdbx, roc) initalizes the srtp_rdbx_t at the location rdbx * to have the rollover counter value roc. If that value is less than * the current rollover counter value, then the function returns * srtp_err_status_replay_old; otherwise, srtp_err_status_ok is returned. * */ srtp_err_status_t srtp_rdbx_set_roc(srtp_rdbx_t *rdbx, uint32_t roc); /* * srtp_rdbx_get_roc(rdbx) returns the value of the rollover counter for * the srtp_rdbx_t pointed to by rdbx * */ srtp_xtd_seq_num_t srtp_rdbx_get_packet_index(const srtp_rdbx_t *rdbx); /* * srtp_xtd_seq_num_t functions - these are *internal* functions of rdbx, and * shouldn't be used to manipulate rdbx internal values. use the rdbx * api instead! */ /* * srtp_rdbx_get_ws(rdbx_ptr) * * gets the window size which was used to initialize the rdbx */ unsigned long srtp_rdbx_get_window_size(const srtp_rdbx_t *rdbx); /* index_init(&pi) initializes a packet index pi (sets it to zero) */ void srtp_index_init(srtp_xtd_seq_num_t *pi); /* index_advance(&pi, s) advances a xtd_seq_num_t forward by s */ void srtp_index_advance(srtp_xtd_seq_num_t *pi, srtp_sequence_number_t s); /* * srtp_index_guess(local, guess, s) * * given a srtp_xtd_seq_num_t local (which represents the highest * known-to-be-good index) and a sequence number s (from a newly * arrived packet), sets the contents of *guess to contain the best * guess of the packet index to which s corresponds, and returns the * difference between *guess and *local */ int srtp_index_guess(const srtp_xtd_seq_num_t *local, srtp_xtd_seq_num_t *guess, srtp_sequence_number_t s); #ifdef __cplusplus } #endif #endif /* RDBX_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/sha1.h000066400000000000000000000116541304141034500235320ustar00rootroot00000000000000/* * sha1.h * * interface to the Secure Hash Algorithm v.1 (SHA-1), specified in * FIPS 180-1 * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef SHA1_H #define SHA1_H #ifdef HAVE_CONFIG_H #include #endif #include "err.h" #ifdef OPENSSL #include #include #else #include "datatypes.h" #endif #ifdef __cplusplus extern "C" { #endif #ifdef OPENSSL /* * srtp_sha1_init(&ctx) initializes the SHA1 context ctx * * srtp_sha1_update(&ctx, msg, len) hashes the len octets starting at msg * into the SHA1 context * * srtp_sha1_final(&ctx, output) performs the final processing of the SHA1 * context and writes the result to the 20 octets at output * * Return values are ignored on the EVP functions since all three * of these functions return void. * */ /* OpenSSL 1.1.0 made EVP_MD_CTX an opaque structure, which must be allocated using EVP_MD_CTX_new. But this function doesn't exist in OpenSSL 1.0.x. */ #if OPENSSL_VERSION_NUMBER < 0x10100000L typedef EVP_MD_CTX srtp_sha1_ctx_t; static inline void srtp_sha1_init (srtp_sha1_ctx_t *ctx) { EVP_MD_CTX_init(ctx); EVP_DigestInit(ctx, EVP_sha1()); } static inline void srtp_sha1_update (srtp_sha1_ctx_t *ctx, const uint8_t *M, int octets_in_msg) { EVP_DigestUpdate(ctx, M, octets_in_msg); } static inline void srtp_sha1_final (srtp_sha1_ctx_t *ctx, uint32_t *output) { unsigned int len = 0; EVP_DigestFinal(ctx, (unsigned char*)output, &len); EVP_MD_CTX_cleanup(ctx); } #else typedef EVP_MD_CTX* srtp_sha1_ctx_t; static inline void srtp_sha1_init (srtp_sha1_ctx_t *ctx) { *ctx = EVP_MD_CTX_new(); EVP_DigestInit(*ctx, EVP_sha1()); } static inline void srtp_sha1_update (srtp_sha1_ctx_t *ctx, const uint8_t *M, int octets_in_msg) { EVP_DigestUpdate(*ctx, M, octets_in_msg); } static inline void srtp_sha1_final (srtp_sha1_ctx_t *ctx, uint32_t *output) { unsigned int len = 0; EVP_DigestFinal(*ctx, (unsigned char*)output, &len); EVP_MD_CTX_free(*ctx); } #endif #else typedef struct { uint32_t H[5]; /* state vector */ uint32_t M[16]; /* message buffer */ int octets_in_buffer; /* octets of message in buffer */ uint32_t num_bits_in_msg; /* total number of bits in message */ } srtp_sha1_ctx_t; /* * srtp_sha1_init(&ctx) initializes the SHA1 context ctx * * srtp_sha1_update(&ctx, msg, len) hashes the len octets starting at msg * into the SHA1 context * * srtp_sha1_final(&ctx, output) performs the final processing of the SHA1 * context and writes the result to the 20 octets at output * */ void srtp_sha1_init(srtp_sha1_ctx_t *ctx); void srtp_sha1_update(srtp_sha1_ctx_t *ctx, const uint8_t *M, int octets_in_msg); void srtp_sha1_final(srtp_sha1_ctx_t * ctx, uint32_t output[5]); /* * The srtp_sha1_core function is INTERNAL to SHA-1, but it is declared * here because it is also used by the cipher SEAL 3.0 in its key * setup algorithm. */ /* * srtp_sha1_core(M, H) computes the core sha1 compression function, where M is * the next part of the message and H is the intermediate state {H0, * H1, ...} * * this function does not do any of the padding required in the * complete sha1 function */ void srtp_sha1_core(const uint32_t M[16], uint32_t hash_value[5]); #endif /* else OPENSSL */ #ifdef __cplusplus } #endif #endif /* SHA1_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/include/stat.h000066400000000000000000000041341304141034500236440ustar00rootroot00000000000000/* * stats.h * * interface to statistical test functions * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef STAT_H #define STAT_H #include "datatypes.h" /* for uint8_t */ #include "err.h" /* for srtp_err_status_t */ #ifdef __cplusplus extern "C" { #endif srtp_err_status_t stat_test_monobit(uint8_t *data); srtp_err_status_t stat_test_poker(uint8_t *data); srtp_err_status_t stat_test_runs(uint8_t *data); #ifdef __cplusplus } #endif #endif /* STAT_H */ libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/kernel/000077500000000000000000000000001304141034500223535ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/kernel/alloc.c000066400000000000000000000055211304141034500236140ustar00rootroot00000000000000/* * alloc.c * * memory allocation and deallocation * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "alloc.h" #include "crypto_kernel.h" /* the debug module for memory allocation */ srtp_debug_module_t mod_alloc = { 0, /* debugging is off by default */ "alloc" /* printable name for module */ }; /* * Nota bene: the debugging statements for srtp_crypto_alloc() and * srtp_crypto_free() have identical prefixes, which include the addresses * of the memory locations on which they are operating. This fact can * be used to locate memory leaks, by turning on memory debugging, * grepping for 'alloc', then matching alloc and free calls by * address. */ #if defined(HAVE_STDLIB_H) void * srtp_crypto_alloc(size_t size) { void *ptr; ptr = malloc(size); if (ptr) { debug_print(mod_alloc, "(location: %p) allocated", ptr); } else { debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n", size); } return ptr; } void srtp_crypto_free(void *ptr) { debug_print(mod_alloc, "(location: %p) freed", ptr); free(ptr); } #else /* we need to define our own memory allocation routines */ #error no memory allocation defined yet #endif libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/kernel/crypto_kernel.c000066400000000000000000000417121304141034500254040ustar00rootroot00000000000000/* * crypto_kernel.c * * header for the cryptographic kernel * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "alloc.h" #include "crypto_kernel.h" /* the debug module for the crypto_kernel */ srtp_debug_module_t srtp_mod_crypto_kernel = { 0, /* debugging is off by default */ "crypto kernel" /* printable name for module */ }; /* * other generic debug modules that can be included in the kernel */ extern srtp_debug_module_t srtp_mod_auth; extern srtp_debug_module_t srtp_mod_cipher; extern srtp_debug_module_t mod_stat; extern srtp_debug_module_t mod_alloc; /* * cipher types that can be included in the kernel */ extern srtp_cipher_type_t srtp_null_cipher; extern srtp_cipher_type_t srtp_aes_icm; #ifdef OPENSSL #ifndef SRTP_NO_AES192 extern srtp_cipher_type_t srtp_aes_icm_192; #endif extern srtp_cipher_type_t srtp_aes_icm_256; extern srtp_cipher_type_t srtp_aes_gcm_128_openssl; extern srtp_cipher_type_t srtp_aes_gcm_256_openssl; #endif /* debug modules for cipher types */ extern srtp_debug_module_t srtp_mod_aes_icm; #ifdef OPENSSL extern srtp_debug_module_t srtp_mod_aes_gcm; #endif /* * auth func types that can be included in the kernel */ extern srtp_auth_type_t srtp_null_auth; extern srtp_auth_type_t srtp_hmac; /* debug modules for auth types */ extern srtp_debug_module_t srtp_mod_hmac; /* crypto_kernel is a global variable, the only one of its datatype */ srtp_crypto_kernel_t crypto_kernel = { srtp_crypto_kernel_state_insecure, /* start off in insecure state */ NULL, /* no cipher types yet */ NULL, /* no auth types yet */ NULL /* no debug modules yet */ }; #define MAX_RNG_TRIALS 25 srtp_err_status_t srtp_crypto_kernel_init () { srtp_err_status_t status; /* check the security state */ if (crypto_kernel.state == srtp_crypto_kernel_state_secure) { /* * we're already in the secure state, but we've been asked to * re-initialize, so we just re-run the self-tests and then return */ return srtp_crypto_kernel_status(); } /* initialize error reporting system */ status = srtp_err_reporting_init("crypto"); if (status) { return status; } /* load debug modules */ status = srtp_crypto_kernel_load_debug_module(&srtp_mod_crypto_kernel); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&srtp_mod_auth); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&srtp_mod_cipher); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&mod_stat); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&mod_alloc); if (status) { return status; } /* load cipher types */ status = srtp_crypto_kernel_load_cipher_type(&srtp_null_cipher, SRTP_NULL_CIPHER); if (status) { return status; } status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_icm, SRTP_AES_ICM); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&srtp_mod_aes_icm); if (status) { return status; } #ifdef OPENSSL #ifndef SRTP_NO_AES192 status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_icm_192, SRTP_AES_192_ICM); if (status) { return status; } #endif status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_icm_256, SRTP_AES_256_ICM); if (status) { return status; } status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_gcm_128_openssl, SRTP_AES_128_GCM); if (status) { return status; } status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_gcm_256_openssl, SRTP_AES_256_GCM); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&srtp_mod_aes_gcm); if (status) { return status; } #endif /* load auth func types */ status = srtp_crypto_kernel_load_auth_type(&srtp_null_auth, SRTP_NULL_AUTH); if (status) { return status; } status = srtp_crypto_kernel_load_auth_type(&srtp_hmac, SRTP_HMAC_SHA1); if (status) { return status; } status = srtp_crypto_kernel_load_debug_module(&srtp_mod_hmac); if (status) { return status; } /* change state to secure */ crypto_kernel.state = srtp_crypto_kernel_state_secure; return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_kernel_status () { srtp_err_status_t status; srtp_kernel_cipher_type_t *ctype = crypto_kernel.cipher_type_list; srtp_kernel_auth_type_t *atype = crypto_kernel.auth_type_list; srtp_kernel_debug_module_t *dm = crypto_kernel.debug_module_list; /* for each cipher type, describe and test */ while (ctype != NULL) { printf("cipher: %s\n", ctype->cipher_type->description); printf(" self-test: "); status = srtp_cipher_type_self_test(ctype->cipher_type); if (status) { printf("failed with error code %d\n", status); exit(status); } printf("passed\n"); ctype = ctype->next; } /* for each auth type, describe and test */ while (atype != NULL) { printf("auth func: %s\n", atype->auth_type->description); printf(" self-test: "); status = srtp_auth_type_self_test(atype->auth_type); if (status) { printf("failed with error code %d\n", status); exit(status); } printf("passed\n"); atype = atype->next; } /* describe each debug module */ printf("debug modules loaded:\n"); while (dm != NULL) { printf(" %s ", dm->mod->name); if (dm->mod->on) { printf("(on)\n"); } else{ printf("(off)\n"); } dm = dm->next; } return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_kernel_list_debug_modules () { srtp_kernel_debug_module_t *dm = crypto_kernel.debug_module_list; /* describe each debug module */ printf("debug modules loaded:\n"); while (dm != NULL) { printf(" %s ", dm->mod->name); if (dm->mod->on) { printf("(on)\n"); } else{ printf("(off)\n"); } dm = dm->next; } return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_kernel_shutdown () { /* * free dynamic memory used in crypto_kernel at present */ /* walk down cipher type list, freeing memory */ while (crypto_kernel.cipher_type_list != NULL) { srtp_kernel_cipher_type_t *ctype = crypto_kernel.cipher_type_list; crypto_kernel.cipher_type_list = ctype->next; debug_print(srtp_mod_crypto_kernel, "freeing memory for cipher %s", ctype->cipher_type->description); srtp_crypto_free(ctype); } /* walk down authetication module list, freeing memory */ while (crypto_kernel.auth_type_list != NULL) { srtp_kernel_auth_type_t *atype = crypto_kernel.auth_type_list; crypto_kernel.auth_type_list = atype->next; debug_print(srtp_mod_crypto_kernel, "freeing memory for authentication %s", atype->auth_type->description); srtp_crypto_free(atype); } /* walk down debug module list, freeing memory */ while (crypto_kernel.debug_module_list != NULL) { srtp_kernel_debug_module_t *kdm = crypto_kernel.debug_module_list; crypto_kernel.debug_module_list = kdm->next; debug_print(srtp_mod_crypto_kernel, "freeing memory for debug module %s", kdm->mod->name); srtp_crypto_free(kdm); } /* return to insecure state */ crypto_kernel.state = srtp_crypto_kernel_state_insecure; return srtp_err_status_ok; } static inline srtp_err_status_t srtp_crypto_kernel_do_load_cipher_type (const srtp_cipher_type_t *new_ct, srtp_cipher_type_id_t id, int replace) { srtp_kernel_cipher_type_t *ctype, *new_ctype; srtp_err_status_t status; /* defensive coding */ if (new_ct == NULL) { return srtp_err_status_bad_param; } if (new_ct->id != id) { return srtp_err_status_bad_param; } /* check cipher type by running self-test */ status = srtp_cipher_type_self_test(new_ct); if (status) { return status; } /* walk down list, checking if this type is in the list already */ ctype = crypto_kernel.cipher_type_list; while (ctype != NULL) { if (id == ctype->id) { if (!replace) { return srtp_err_status_bad_param; } status = srtp_cipher_type_test(new_ct, ctype->cipher_type->test_data); if (status) { return status; } new_ctype = ctype; break; }else if (new_ct == ctype->cipher_type) { return srtp_err_status_bad_param; } ctype = ctype->next; } /* if not found, put new_ct at the head of the list */ if (ctype == NULL) { /* allocate memory */ new_ctype = (srtp_kernel_cipher_type_t*)srtp_crypto_alloc(sizeof(srtp_kernel_cipher_type_t)); if (new_ctype == NULL) { return srtp_err_status_alloc_fail; } new_ctype->next = crypto_kernel.cipher_type_list; /* set head of list to new cipher type */ crypto_kernel.cipher_type_list = new_ctype; } /* set fields */ new_ctype->cipher_type = new_ct; new_ctype->id = id; return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_kernel_load_cipher_type (const srtp_cipher_type_t *new_ct, srtp_cipher_type_id_t id) { return srtp_crypto_kernel_do_load_cipher_type(new_ct, id, 0); } srtp_err_status_t srtp_replace_cipher_type (const srtp_cipher_type_t *new_ct, srtp_cipher_type_id_t id) { return srtp_crypto_kernel_do_load_cipher_type(new_ct, id, 1); } srtp_err_status_t srtp_crypto_kernel_do_load_auth_type (const srtp_auth_type_t *new_at, srtp_auth_type_id_t id, int replace) { srtp_kernel_auth_type_t *atype, *new_atype; srtp_err_status_t status; /* defensive coding */ if (new_at == NULL) { return srtp_err_status_bad_param; } if (new_at->id != id) { return srtp_err_status_bad_param; } /* check auth type by running self-test */ status = srtp_auth_type_self_test(new_at); if (status) { return status; } /* walk down list, checking if this type is in the list already */ atype = crypto_kernel.auth_type_list; while (atype != NULL) { if (id == atype->id) { if (!replace) { return srtp_err_status_bad_param; } status = srtp_auth_type_test(new_at, atype->auth_type->test_data); if (status) { return status; } new_atype = atype; break; }else if (new_at == atype->auth_type) { return srtp_err_status_bad_param; } atype = atype->next; } /* if not found, put new_at at the head of the list */ if (atype == NULL) { /* allocate memory */ new_atype = (srtp_kernel_auth_type_t*)srtp_crypto_alloc(sizeof(srtp_kernel_auth_type_t)); if (new_atype == NULL) { return srtp_err_status_alloc_fail; } new_atype->next = crypto_kernel.auth_type_list; /* set head of list to new auth type */ crypto_kernel.auth_type_list = new_atype; } /* set fields */ new_atype->auth_type = new_at; new_atype->id = id; return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_kernel_load_auth_type (const srtp_auth_type_t *new_at, srtp_auth_type_id_t id) { return srtp_crypto_kernel_do_load_auth_type(new_at, id, 0); } srtp_err_status_t srtp_replace_auth_type (const srtp_auth_type_t *new_at, srtp_auth_type_id_t id) { return srtp_crypto_kernel_do_load_auth_type(new_at, id, 1); } const srtp_cipher_type_t * srtp_crypto_kernel_get_cipher_type (srtp_cipher_type_id_t id) { srtp_kernel_cipher_type_t *ctype; /* walk down list, looking for id */ ctype = crypto_kernel.cipher_type_list; while (ctype != NULL) { if (id == ctype->id) { return ctype->cipher_type; } ctype = ctype->next; } /* haven't found the right one, indicate failure by returning NULL */ return NULL; } srtp_err_status_t srtp_crypto_kernel_alloc_cipher (srtp_cipher_type_id_t id, srtp_cipher_pointer_t *cp, int key_len, int tag_len) { const srtp_cipher_type_t *ct; /* * if the crypto_kernel is not yet initialized, we refuse to allocate * any ciphers - this is a bit extra-paranoid */ if (crypto_kernel.state != srtp_crypto_kernel_state_secure) { return srtp_err_status_init_fail; } ct = srtp_crypto_kernel_get_cipher_type(id); if (!ct) { return srtp_err_status_fail; } return ((ct)->alloc(cp, key_len, tag_len)); } const srtp_auth_type_t * srtp_crypto_kernel_get_auth_type (srtp_auth_type_id_t id) { srtp_kernel_auth_type_t *atype; /* walk down list, looking for id */ atype = crypto_kernel.auth_type_list; while (atype != NULL) { if (id == atype->id) { return atype->auth_type; } atype = atype->next; } /* haven't found the right one, indicate failure by returning NULL */ return NULL; } srtp_err_status_t srtp_crypto_kernel_alloc_auth (srtp_auth_type_id_t id, srtp_auth_pointer_t *ap, int key_len, int tag_len) { const srtp_auth_type_t *at; /* * if the crypto_kernel is not yet initialized, we refuse to allocate * any auth functions - this is a bit extra-paranoid */ if (crypto_kernel.state != srtp_crypto_kernel_state_secure) { return srtp_err_status_init_fail; } at = srtp_crypto_kernel_get_auth_type(id); if (!at) { return srtp_err_status_fail; } return ((at)->alloc(ap, key_len, tag_len)); } srtp_err_status_t srtp_crypto_kernel_load_debug_module (srtp_debug_module_t *new_dm) { srtp_kernel_debug_module_t *kdm, *new; /* defensive coding */ if (new_dm == NULL) { return srtp_err_status_bad_param; } /* walk down list, checking if this type is in the list already */ kdm = crypto_kernel.debug_module_list; while (kdm != NULL) { if (strncmp(new_dm->name, kdm->mod->name, 64) == 0) { return srtp_err_status_bad_param; } kdm = kdm->next; } /* put new_dm at the head of the list */ /* allocate memory */ new = (srtp_kernel_debug_module_t*)srtp_crypto_alloc(sizeof(srtp_kernel_debug_module_t)); if (new == NULL) { return srtp_err_status_alloc_fail; } /* set fields */ new->mod = new_dm; new->next = crypto_kernel.debug_module_list; /* set head of list to new cipher type */ crypto_kernel.debug_module_list = new; return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_kernel_set_debug_module (char *name, int on) { srtp_kernel_debug_module_t *kdm; /* walk down list, checking if this type is in the list already */ kdm = crypto_kernel.debug_module_list; while (kdm != NULL) { if (strncmp(name, kdm->mod->name, 64) == 0) { kdm->mod->on = on; return srtp_err_status_ok; } kdm = kdm->next; } return srtp_err_status_fail; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/kernel/err.c000066400000000000000000000056161304141034500233170ustar00rootroot00000000000000/* * err.c * * error status reporting functions * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "err.h" /* srtp_err_level reflects the level of errors that are reported */ srtp_err_reporting_level_t srtp_err_level = srtp_err_level_none; /* srtp_err_file is the FILE to which errors are reported */ static FILE *srtp_err_file = NULL; srtp_err_status_t srtp_err_reporting_init (const char *ident) { /* * Believe it or not, openlog doesn't return an error on failure. * But then, neither does the syslog() call... */ #ifdef ERR_REPORTING_STDOUT srtp_err_file = stdout; #elif defined(USE_ERR_REPORTING_FILE) /* open file for error reporting */ srtp_err_file = fopen(ERR_REPORTING_FILE, "w"); if (srtp_err_file == NULL) { return srtp_err_status_init_fail; } #endif return srtp_err_status_ok; } void srtp_err_report (int priority, const char *format, ...) { va_list args; if (priority <= srtp_err_level) { va_start(args, format); if (srtp_err_file != NULL) { vfprintf(srtp_err_file, format, args); /* fprintf(srtp_err_file, "\n"); */ } va_end(args); } } void srtp_err_reporting_set_level (srtp_err_reporting_level_t lvl) { srtp_err_level = lvl; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/kernel/key.c000066400000000000000000000072461304141034500233200ustar00rootroot00000000000000/* * key.c * * key usage limits enforcement * * David A. Mcgrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "key.h" #define soft_limit 0x10000 srtp_err_status_t srtp_key_limit_set (srtp_key_limit_t key, const srtp_xtd_seq_num_t s) { #ifdef NO_64BIT_MATH if (high32(s) == 0 && low32(s) < soft_limit) { return srtp_err_status_bad_param; } #else if (s < soft_limit) { return srtp_err_status_bad_param; } #endif key->num_left = s; key->state = srtp_key_state_normal; return srtp_err_status_ok; } srtp_err_status_t srtp_key_limit_clone (srtp_key_limit_t original, srtp_key_limit_t *new_key) { if (original == NULL) { return srtp_err_status_bad_param; } *new_key = original; return srtp_err_status_ok; } srtp_err_status_t srtp_key_limit_check (const srtp_key_limit_t key) { if (key->state == srtp_key_state_expired) { return srtp_err_status_key_expired; } return srtp_err_status_ok; } srtp_key_event_t srtp_key_limit_update (srtp_key_limit_t key) { #ifdef NO_64BIT_MATH if (low32(key->num_left) == 0) { // carry key->num_left = make64(high32(key->num_left) - 1, low32(key->num_left) - 1); }else { // no carry key->num_left = make64(high32(key->num_left), low32(key->num_left) - 1); } if (high32(key->num_left) != 0 || low32(key->num_left) >= soft_limit) { return srtp_key_event_normal; /* we're above the soft limit */ } #else key->num_left--; if (key->num_left >= soft_limit) { return srtp_key_event_normal; /* we're above the soft limit */ } #endif if (key->state == srtp_key_state_normal) { /* we just passed the soft limit, so change the state */ key->state = srtp_key_state_past_soft_limit; } #ifdef NO_64BIT_MATH if (low32(key->num_left) == 0 && high32(key->num_left == 0)) #else if (key->num_left < 1) #endif { /* we just hit the hard limit */ key->state = srtp_key_state_expired; return srtp_key_event_hard_limit; } return srtp_key_event_soft_limit; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/math/000077500000000000000000000000001304141034500220245ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/math/datatypes.c000066400000000000000000000260031304141034500241670ustar00rootroot00000000000000/* * datatypes.c * * data types for finite fields and functions for input, output, and * manipulation * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "datatypes.h" int octet_weight[256] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 }; int octet_get_weight(uint8_t octet) { extern int octet_weight[256]; return octet_weight[octet]; } /* * bit_string is a buffer that is used to hold output strings, e.g. * for printing. */ /* the value MAX_PRINT_STRING_LEN is defined in datatypes.h */ char bit_string[MAX_PRINT_STRING_LEN]; uint8_t srtp_nibble_to_hex_char(uint8_t nibble) { char buf[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; return buf[nibble & 0xF]; } char * srtp_octet_string_hex_string(const void *s, int length) { const uint8_t *str = (const uint8_t *)s; int i; /* double length, since one octet takes two hex characters */ length *= 2; /* truncate string if it would be too long */ if (length > MAX_PRINT_STRING_LEN) length = MAX_PRINT_STRING_LEN-2; for (i=0; i < length; i+=2) { bit_string[i] = srtp_nibble_to_hex_char(*str >> 4); bit_string[i+1] = srtp_nibble_to_hex_char(*str++ & 0xF); } bit_string[i] = 0; /* null terminate string */ return bit_string; } char * v128_hex_string(v128_t *x) { int i, j; for (i=j=0; i < 16; i++) { bit_string[j++] = srtp_nibble_to_hex_char(x->v8[i] >> 4); bit_string[j++] = srtp_nibble_to_hex_char(x->v8[i] & 0xF); } bit_string[j] = 0; /* null terminate string */ return bit_string; } char * v128_bit_string(v128_t *x) { int j, i; uint32_t mask; for (j=i=0; j < 4; j++) { for (mask=0x80000000; mask > 0; mask >>= 1) { if (x->v32[j] & mask) bit_string[i] = '1'; else bit_string[i] = '0'; ++i; } } bit_string[128] = 0; /* null terminate string */ return bit_string; } void v128_copy_octet_string(v128_t *x, const uint8_t s[16]) { #ifdef ALIGNMENT_32BIT_REQUIRED if ((((uint32_t) &s[0]) & 0x3) != 0) #endif { x->v8[0] = s[0]; x->v8[1] = s[1]; x->v8[2] = s[2]; x->v8[3] = s[3]; x->v8[4] = s[4]; x->v8[5] = s[5]; x->v8[6] = s[6]; x->v8[7] = s[7]; x->v8[8] = s[8]; x->v8[9] = s[9]; x->v8[10] = s[10]; x->v8[11] = s[11]; x->v8[12] = s[12]; x->v8[13] = s[13]; x->v8[14] = s[14]; x->v8[15] = s[15]; } #ifdef ALIGNMENT_32BIT_REQUIRED else { v128_t *v = (v128_t *) &s[0]; v128_copy(x,v); } #endif } #ifndef DATATYPES_USE_MACROS /* little functions are not macros */ void v128_set_to_zero(v128_t *x) { _v128_set_to_zero(x); } void v128_copy(v128_t *x, const v128_t *y) { _v128_copy(x, y); } void v128_xor(v128_t *z, v128_t *x, v128_t *y) { _v128_xor(z, x, y); } void v128_and(v128_t *z, v128_t *x, v128_t *y) { _v128_and(z, x, y); } void v128_or(v128_t *z, v128_t *x, v128_t *y) { _v128_or(z, x, y); } void v128_complement(v128_t *x) { _v128_complement(x); } int v128_is_eq(const v128_t *x, const v128_t *y) { return _v128_is_eq(x, y); } int v128_xor_eq(v128_t *x, const v128_t *y) { return _v128_xor_eq(x, y); } int v128_get_bit(const v128_t *x, int i) { return _v128_get_bit(x, i); } void v128_set_bit(v128_t *x, int i) { _v128_set_bit(x, i); } void v128_clear_bit(v128_t *x, int i){ _v128_clear_bit(x, i); } void v128_set_bit_to(v128_t *x, int i, int y){ _v128_set_bit_to(x, i, y); } #endif /* DATATYPES_USE_MACROS */ void v128_right_shift(v128_t *x, int shift) { const int base_index = shift >> 5; const int bit_index = shift & 31; int i, from; uint32_t b; if (shift > 127) { v128_set_to_zero(x); return; } if (bit_index == 0) { /* copy each word from left size to right side */ x->v32[4-1] = x->v32[4-1-base_index]; for (i=4-1; i > base_index; i--) x->v32[i-1] = x->v32[i-1-base_index]; } else { /* set each word to the "or" of the two bit-shifted words */ for (i = 4; i > base_index; i--) { from = i-1 - base_index; b = x->v32[from] << bit_index; if (from > 0) b |= x->v32[from-1] >> (32-bit_index); x->v32[i-1] = b; } } /* now wrap up the final portion */ for (i=0; i < base_index; i++) x->v32[i] = 0; } void v128_left_shift(v128_t *x, int shift) { int i; const int base_index = shift >> 5; const int bit_index = shift & 31; if (shift > 127) { v128_set_to_zero(x); return; } if (bit_index == 0) { for (i=0; i < 4 - base_index; i++) x->v32[i] = x->v32[i+base_index]; } else { for (i=0; i < 4 - base_index - 1; i++) x->v32[i] = (x->v32[i+base_index] >> bit_index) ^ (x->v32[i+base_index+1] << (32 - bit_index)); x->v32[4 - base_index-1] = x->v32[4-1] >> bit_index; } /* now wrap up the final portion */ for (i = 4 - base_index; i < 4; i++) x->v32[i] = 0; } /* functions manipulating bitvector_t */ #ifndef DATATYPES_USE_MACROS /* little functions are not macros */ int bitvector_get_bit(const bitvector_t *v, int bit_index) { return _bitvector_get_bit(v, bit_index); } void bitvector_set_bit(bitvector_t *v, int bit_index) { _bitvector_set_bit(v, bit_index); } void bitvector_clear_bit(bitvector_t *v, int bit_index) { _bitvector_clear_bit(v, bit_index); } #endif /* DATATYPES_USE_MACROS */ int bitvector_alloc(bitvector_t *v, unsigned long length) { unsigned long l; /* Round length up to a multiple of bits_per_word */ length = (length + bits_per_word - 1) & ~(unsigned long)((bits_per_word - 1)); l = length / bits_per_word * bytes_per_word; /* allocate memory, then set parameters */ if (l == 0) v->word = NULL; else { v->word = (uint32_t*)srtp_crypto_alloc(l); if (v->word == NULL) { v->word = NULL; v->length = 0; return -1; } } v->length = length; /* initialize bitvector to zero */ bitvector_set_to_zero(v); return 0; } void bitvector_dealloc(bitvector_t *v) { if (v->word != NULL) srtp_crypto_free(v->word); v->word = NULL; v->length = 0; } void bitvector_set_to_zero(bitvector_t *x) { /* C99 guarantees that memset(0) will set the value 0 for uint32_t */ memset(x->word, 0, x->length >> 3); } char * bitvector_bit_string(bitvector_t *x, char* buf, int len) { int j, i; uint32_t mask; for (j=i=0; j < (int)(x->length>>5) && i < len-1; j++) { for (mask=0x80000000; mask > 0; mask >>= 1) { if (x->word[j] & mask) buf[i] = '1'; else buf[i] = '0'; ++i; if (i >= len-1) break; } } buf[i] = 0; /* null terminate string */ return buf; } void bitvector_left_shift(bitvector_t *x, int shift) { int i; const int base_index = shift >> 5; const int bit_index = shift & 31; const int word_length = x->length >> 5; if (shift >= (int)x->length) { bitvector_set_to_zero(x); return; } if (bit_index == 0) { for (i=0; i < word_length - base_index; i++) x->word[i] = x->word[i+base_index]; } else { for (i=0; i < word_length - base_index - 1; i++) x->word[i] = (x->word[i+base_index] >> bit_index) ^ (x->word[i+base_index+1] << (32 - bit_index)); x->word[word_length - base_index-1] = x->word[word_length-1] >> bit_index; } /* now wrap up the final portion */ for (i = word_length - base_index; i < word_length; i++) x->word[i] = 0; } int octet_string_is_eq(uint8_t *a, uint8_t *b, int len) { uint8_t *end = b + len; uint8_t accumulator = 0; /* * We use this somewhat obscure implementation to try to ensure the running * time only depends on len, even accounting for compiler optimizations. * The accumulator ends up zero iff the strings are equal. */ while (b < end) accumulator |= (*a++ ^ *b++); /* Return 1 if *not* equal. */ return accumulator != 0; } void octet_string_set_to_zero(uint8_t *s, int len) { uint8_t *end = s + len; do { *s = 0; } while (++s < end); } #ifdef TESTAPP_SOURCE static const char b64chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz0123456789+/"; static int base64_block_to_octet_triple(char *out, char *in) { unsigned char sextets[4] = {0}; int j = 0; int i; for (i = 0; i < 4; i++) { char *p = strchr(b64chars, in[i]); if (p != NULL) sextets[i] = p - b64chars; else j++; } out[0] = (sextets[0]<<2)|(sextets[1]>>4); if (j < 2) out[1] = (sextets[1]<<4)|(sextets[2]>>2); if (j < 1) out[2] = (sextets[2]<<6)|sextets[3]; return j; } int base64_string_to_octet_string(char *out, int *pad, char *in, int len) { int k = 0; int i = 0; int j = 0; if (len % 4 != 0) return 0; while (i < len && j == 0) { j = base64_block_to_octet_triple(out + k, in + i); k += 3; i += 4; } *pad = j; return i; } #endif libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/math/stat.c000066400000000000000000000136421304141034500231510ustar00rootroot00000000000000/* * stats.c * * statistical tests * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "stat.h" srtp_debug_module_t mod_stat = { 0, /* debugging is off by default */ (char *)"stat test" /* printable module name */ }; /* * each test assumes that 20,000 bits (2500 octets) of data is * provided as input */ #define STAT_TEST_DATA_LEN 2500 srtp_err_status_t stat_test_monobit(uint8_t *data) { uint8_t *data_end = data + STAT_TEST_DATA_LEN; uint16_t ones_count; ones_count = 0; while (data < data_end) { ones_count += octet_get_weight(*data); data++; } debug_print(mod_stat, "bit count: %d", ones_count); if ((ones_count < 9725) || (ones_count > 10275)) return srtp_err_status_algo_fail; return srtp_err_status_ok; } srtp_err_status_t stat_test_poker(uint8_t *data) { int i; uint8_t *data_end = data + STAT_TEST_DATA_LEN; double poker; uint16_t f[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; while (data < data_end) { f[*data & 0x0f]++; /* increment freq. count for low nibble */ f[(*data) >> 4]++; /* increment freq. count for high nibble */ data++; } poker = 0.0; for (i=0; i < 16; i++) poker += (double) f[i] * f[i]; poker *= (16.0 / 5000.0); poker -= 5000.0; debug_print(mod_stat, "poker test: %f\n", poker); if ((poker < 2.16) || (poker > 46.17)) return srtp_err_status_algo_fail; return srtp_err_status_ok; } /* * runs[i] holds the number of runs of size (i-1) */ srtp_err_status_t stat_test_runs(uint8_t *data) { uint8_t *data_end = data + STAT_TEST_DATA_LEN; uint16_t runs[6] = { 0, 0, 0, 0, 0, 0 }; uint16_t gaps[6] = { 0, 0, 0, 0, 0, 0 }; uint16_t lo_value[6] = { 2315, 1114, 527, 240, 103, 103 }; uint16_t hi_value[6] = { 2685, 1386, 723, 384, 209, 209 }; int state = 0; uint16_t mask; int i; /* * the state variable holds the number of bits in the * current run (or gap, if negative) */ while (data < data_end) { /* loop over the bits of this byte */ for (mask = 1; mask < 256; mask <<= 1) { if (*data & mask) { /* next bit is a one */ if (state > 0) { /* prefix is a run, so increment the run-count */ state++; /* check for long runs */ if (state > 25) { debug_print(mod_stat, ">25 runs: %d", state); return srtp_err_status_algo_fail; } } else if (state < 0) { /* prefix is a gap */ if (state < -25) { debug_print(mod_stat, ">25 gaps: %d", state); return srtp_err_status_algo_fail; /* long-runs test failed */ } if (state < -6) { state = -6; /* group together gaps > 5 */ } gaps[-1-state]++; /* increment gap count */ state = 1; /* set state at one set bit */ } else { /* state is zero; this happens only at initialization */ state = 1; } } else { /* next bit is a zero */ if (state > 0) { /* prefix is a run */ if (state > 25) { debug_print(mod_stat, ">25 runs (2): %d", state); return srtp_err_status_algo_fail; /* long-runs test failed */ } if (state > 6) { state = 6; /* group together runs > 5 */ } runs[state-1]++; /* increment run count */ state = -1; /* set state at one zero bit */ } else if (state < 0) { /* prefix is a gap, so increment gap-count (decrement state) */ state--; /* check for long gaps */ if (state < -25) { debug_print(mod_stat, ">25 gaps (2): %d", state); return srtp_err_status_algo_fail; } } else { /* state is zero; this happens only at initialization */ state = -1; } } } /* move along to next octet */ data++; } if (mod_stat.on) { debug_print(mod_stat, "runs test", NULL); for (i=0; i < 6; i++) debug_print(mod_stat, " runs[]: %d", runs[i]); for (i=0; i < 6; i++) debug_print(mod_stat, " gaps[]: %d", gaps[i]); } /* check run and gap counts against the fixed limits */ for (i=0; i < 6; i++) if ( (runs[i] < lo_value[i] ) || (runs[i] > hi_value[i]) || (gaps[i] < lo_value[i] ) || (gaps[i] > hi_value[i])) return srtp_err_status_algo_fail; return srtp_err_status_ok; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/replay/000077500000000000000000000000001304141034500223675ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/replay/rdb.c000066400000000000000000000101361304141034500233030ustar00rootroot00000000000000/* * rdb.c * * Implements a replay database for packet security * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "rdb.h" /* * this implementation of a replay database works as follows: * * window_start is the index of the first packet in the window * bitmask a bit-buffer, containing the most recently entered * index as the leftmost bit * */ /* srtp_rdb_init initalizes rdb */ srtp_err_status_t srtp_rdb_init (srtp_rdb_t *rdb) { v128_set_to_zero(&rdb->bitmask); rdb->window_start = 0; return srtp_err_status_ok; } /* * srtp_rdb_check checks to see if index appears in rdb */ srtp_err_status_t srtp_rdb_check (const srtp_rdb_t *rdb, uint32_t p_index) { /* if the index appears after (or at very end of) the window, its good */ if (p_index >= rdb->window_start + rdb_bits_in_bitmask) { return srtp_err_status_ok; } /* if the index appears before the window, its bad */ if (p_index < rdb->window_start) { return srtp_err_status_replay_old; } /* otherwise, the index appears within the window, so check the bitmask */ if (v128_get_bit(&rdb->bitmask, (p_index - rdb->window_start)) == 1) { return srtp_err_status_replay_fail; } /* otherwise, the index is okay */ return srtp_err_status_ok; } /* * srtp_rdb_add_index adds index to srtp_rdb_t (and does *not* check if * index appears in db) * * this function should be called only after srtp_rdb_check has * indicated that the index does not appear in the rdb, e.g., a mutex * should protect the rdb between these calls */ srtp_err_status_t srtp_rdb_add_index (srtp_rdb_t *rdb, uint32_t p_index) { int delta; /* here we *assume* that p_index > rdb->window_start */ delta = (p_index - rdb->window_start); if (delta < rdb_bits_in_bitmask) { /* if the p_index is within the window, set the appropriate bit */ v128_set_bit(&rdb->bitmask, delta); } else { delta -= rdb_bits_in_bitmask - 1; /* shift the window forward by delta bits*/ v128_left_shift(&rdb->bitmask, delta); v128_set_bit(&rdb->bitmask, rdb_bits_in_bitmask - 1); rdb->window_start += delta; } return srtp_err_status_ok; } srtp_err_status_t srtp_rdb_increment (srtp_rdb_t *rdb) { if (rdb->window_start++ > 0x7fffffff) { return srtp_err_status_key_expired; } return srtp_err_status_ok; } uint32_t srtp_rdb_get_value (const srtp_rdb_t *rdb) { return rdb->window_start; } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/replay/rdbx.c000066400000000000000000000245241304141034500235010ustar00rootroot00000000000000/* * rdbx.c * * a replay database with extended range, using a rollover counter * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "rdbx.h" /* * from RFC 3711: * * A receiver reconstructs the index i of a packet with sequence * number SEQ using the estimate * * i = 2^16 * v + SEQ, * * where v is chosen from the set { ROC-1, ROC, ROC+1 } such that i is * closest to the value 2^16 * ROC + s_l. If the value r+1 is used, * then the rollover counter r in the cryptographic context is * incremented by one (if the packet containing s is authentic). */ /* * rdbx implementation notes * * A srtp_xtd_seq_num_t is essentially a sequence number for which some of * the data on the wire are implicit. It logically consists of a * rollover counter and a sequence number; the sequence number is the * explicit part, and the rollover counter is the implicit part. * * Upon receiving a sequence_number (e.g. in a newly received SRTP * packet), the complete srtp_xtd_seq_num_t can be estimated by using a * local srtp_xtd_seq_num_t as a basis. This is done using the function * srtp_index_guess(&local, &guess, seq_from_packet). This function * returns the difference of the guess and the local value. The local * srtp_xtd_seq_num_t can be moved forward to the guess using the function * srtp_index_advance(&guess, delta), where delta is the difference. * * * A srtp_rdbx_t consists of a srtp_xtd_seq_num_t and a bitmask. The index is highest * sequence number that has been received, and the bitmask indicates * which of the recent indicies have been received as well. The * highest bit in the bitmask corresponds to the index in the bitmask. */ void srtp_index_init (srtp_xtd_seq_num_t *pi) { #ifdef NO_64BIT_MATH *pi = make64(0, 0); #else *pi = 0; #endif } void srtp_index_advance (srtp_xtd_seq_num_t *pi, srtp_sequence_number_t s) { #ifdef NO_64BIT_MATH /* a > ~b means a+b will generate a carry */ /* s is uint16 here */ *pi = make64(high32(*pi) + (s > ~low32(*pi) ? 1 : 0), low32(*pi) + s); #else *pi += s; #endif } /* * srtp_index_guess(local, guess, s) * * given a srtp_xtd_seq_num_t local (which represents the last * known-to-be-good received srtp_xtd_seq_num_t) and a sequence number s * (from a newly arrived packet), sets the contents of *guess to * contain the best guess of the packet index to which s corresponds, * and returns the difference between *guess and *local * * nota bene - the output is a signed integer, DON'T cast it to a * unsigned integer! */ int srtp_index_guess (const srtp_xtd_seq_num_t *local, srtp_xtd_seq_num_t *guess, srtp_sequence_number_t s) { #ifdef NO_64BIT_MATH uint32_t local_roc = ((high32(*local) << 16) | (low32(*local) >> 16)); uint16_t local_seq = (uint16_t)(low32(*local)); #else uint32_t local_roc = (uint32_t)(*local >> 16); uint16_t local_seq = (uint16_t)*local; #endif #ifdef NO_64BIT_MATH uint32_t guess_roc = ((high32(*guess) << 16) | (low32(*guess) >> 16)); uint16_t guess_seq = (uint16_t)(low32(*guess)); #else uint32_t guess_roc = (uint32_t)(*guess >> 16); uint16_t guess_seq = (uint16_t)*guess; #endif int difference; if (local_seq < seq_num_median) { if (s - local_seq > seq_num_median) { guess_roc = local_roc - 1; difference = s - local_seq - seq_num_max; } else { guess_roc = local_roc; difference = s - local_seq; } } else { if (local_seq - seq_num_median > s) { guess_roc = local_roc + 1; difference = s - local_seq + seq_num_max; } else { guess_roc = local_roc; difference = s - local_seq; } } guess_seq = s; /* Note: guess_roc is 32 bits, so this generates a 48-bit result! */ #ifdef NO_64BIT_MATH *guess = make64(guess_roc >> 16, (guess_roc << 16) | guess_seq); #else *guess = (((uint64_t)guess_roc) << 16) | guess_seq; #endif return difference; } /* * rdbx * */ /* * srtp_rdbx_init(&r, ws) initializes the srtp_rdbx_t pointed to by r with window size ws */ srtp_err_status_t srtp_rdbx_init (srtp_rdbx_t *rdbx, unsigned long ws) { if (ws == 0) { return srtp_err_status_bad_param; } if (bitvector_alloc(&rdbx->bitmask, ws) != 0) { return srtp_err_status_alloc_fail; } srtp_index_init(&rdbx->index); return srtp_err_status_ok; } /* * srtp_rdbx_dealloc(&r) frees memory for the srtp_rdbx_t pointed to by r */ srtp_err_status_t srtp_rdbx_dealloc (srtp_rdbx_t *rdbx) { bitvector_dealloc(&rdbx->bitmask); return srtp_err_status_ok; } /* * srtp_rdbx_set_roc(rdbx, roc) initalizes the srtp_rdbx_t at the location rdbx * to have the rollover counter value roc. If that value is less than * the current rollover counter value, then the function returns * srtp_err_status_replay_old; otherwise, srtp_err_status_ok is returned. * */ srtp_err_status_t srtp_rdbx_set_roc (srtp_rdbx_t *rdbx, uint32_t roc) { bitvector_set_to_zero(&rdbx->bitmask); #ifdef NO_64BIT_MATH #error not yet implemented #else /* make sure that we're not moving backwards */ if (roc < (rdbx->index >> 16)) { return srtp_err_status_replay_old; } rdbx->index &= 0xffff; /* retain lowest 16 bits */ rdbx->index |= ((uint64_t)roc) << 16; /* set ROC */ #endif return srtp_err_status_ok; } /* * srtp_rdbx_get_packet_index(rdbx) returns the value of the packet index * for the srtp_rdbx_t pointed to by rdbx * */ srtp_xtd_seq_num_t srtp_rdbx_get_packet_index (const srtp_rdbx_t *rdbx) { return rdbx->index; } /* * srtp_rdbx_get_window_size(rdbx) returns the value of the window size * for the srtp_rdbx_t pointed to by rdbx * */ unsigned long srtp_rdbx_get_window_size (const srtp_rdbx_t *rdbx) { return bitvector_get_length(&rdbx->bitmask); } /* * srtp_rdbx_check(&r, delta) checks to see if the srtp_xtd_seq_num_t * which is at rdbx->index + delta is in the rdb */ srtp_err_status_t srtp_rdbx_check (const srtp_rdbx_t *rdbx, int delta) { if (delta > 0) { /* if delta is positive, it's good */ return srtp_err_status_ok; } else if ((int)(bitvector_get_length(&rdbx->bitmask) - 1) + delta < 0) { /* if delta is lower than the bitmask, it's bad */ return srtp_err_status_replay_old; } else if (bitvector_get_bit(&rdbx->bitmask, (int)(bitvector_get_length(&rdbx->bitmask) - 1) + delta) == 1) { /* delta is within the window, so check the bitmask */ return srtp_err_status_replay_fail; } /* otherwise, the index is okay */ return srtp_err_status_ok; } /* * srtp_rdbx_add_index adds the srtp_xtd_seq_num_t at rdbx->window_start + d to * replay_db (and does *not* check if that srtp_xtd_seq_num_t appears in db) * * this function should be called only after replay_check has * indicated that the index does not appear in the rdbx, e.g., a mutex * should protect the rdbx between these calls if need be */ srtp_err_status_t srtp_rdbx_add_index (srtp_rdbx_t *rdbx, int delta) { if (delta > 0) { /* shift forward by delta */ srtp_index_advance(&rdbx->index, delta); bitvector_left_shift(&rdbx->bitmask, delta); bitvector_set_bit(&rdbx->bitmask, bitvector_get_length(&rdbx->bitmask) - 1); } else { /* delta is in window */ bitvector_set_bit(&rdbx->bitmask, bitvector_get_length(&rdbx->bitmask) - 1 + delta); } /* note that we need not consider the case that delta == 0 */ return srtp_err_status_ok; } /* * srtp_rdbx_estimate_index(rdbx, guess, s) * * given an rdbx and a sequence number s (from a newly arrived packet), * sets the contents of *guess to contain the best guess of the packet * index to which s corresponds, and returns the difference between * *guess and the locally stored synch info */ int srtp_rdbx_estimate_index (const srtp_rdbx_t *rdbx, srtp_xtd_seq_num_t *guess, srtp_sequence_number_t s) { /* * if the sequence number and rollover counter in the rdbx are * non-zero, then use the srtp_index_guess(...) function, otherwise, just * set the rollover counter to zero (since the srtp_index_guess(...) * function might incorrectly guess that the rollover counter is * 0xffffffff) */ #ifdef NO_64BIT_MATH /* seq_num_median = 0x8000 */ if (high32(rdbx->index) > 0 || low32(rdbx->index) > seq_num_median) #else if (rdbx->index > seq_num_median) #endif { return srtp_index_guess(&rdbx->index, guess, s); } #ifdef NO_64BIT_MATH *guess = make64(0, (uint32_t)s); #else *guess = s; #endif #ifdef NO_64BIT_MATH return s - (uint16_t)low32(rdbx->index); #else return s - (uint16_t)rdbx->index; #endif } libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/replay/ut_sim.c000066400000000000000000000051221304141034500240330ustar00rootroot00000000000000/* * ut_sim.c * * an unreliable transport simulator * (for testing replay databases and suchlike) * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include "ut_sim.h" int ut_compar(const void *a, const void *b) { return rand() > (RAND_MAX/2) ? -1 : 1; } void ut_init(ut_connection *utc) { int i; utc->index = 0; for (i=0; i < UT_BUF; i++) utc->buffer[i] = i; qsort(utc->buffer, UT_BUF, sizeof(uint32_t), ut_compar); utc->index = UT_BUF - 1; } uint32_t ut_next_index(ut_connection *utc) { uint32_t tmp; tmp = utc->buffer[0]; utc->index++; utc->buffer[0] = utc->index; qsort(utc->buffer, UT_BUF, sizeof(uint32_t), ut_compar); return tmp; } #ifdef UT_TEST #include int main() { uint32_t i, irecvd, idiff; ut_connection utc; ut_init(&utc); for (i=0; i < 1000; i++) { irecvd = ut_next_index(&utc); idiff = i - irecvd; printf("%lu\t%lu\t%d\n", i, irecvd, idiff); } return 0; } #endif libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/000077500000000000000000000000001304141034500220525ustar00rootroot00000000000000libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/aes_calc.c000066400000000000000000000110501304141034500237450ustar00rootroot00000000000000/* * aes_calc.c * * A simple AES calculator for generating AES encryption values * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* Example usage (with first NIST FIPS 197 test case): [sh]$ test/aes_calc 000102030405060708090a0b0c0d0e0f 00112233445566778899aabbccddeeff -v plaintext: 00112233445566778899aabbccddeeff key: 000102030405060708090a0b0c0d0e0f ciphertext: 69c4e0d86a7b0430d8cdb78070b4c55a */ #ifdef HAVE_CONFIG_H #include #endif #include "aes.h" #include #include #include "util.h" void usage(char *prog_name) { printf("usage: %s [-v]\n", prog_name); exit(255); } #define AES_MAX_KEY_LEN 32 int main (int argc, char *argv[]) { v128_t data; uint8_t key[AES_MAX_KEY_LEN]; srtp_aes_expanded_key_t exp_key; int key_len, len; int verbose = 0; srtp_err_status_t status; if (argc == 3) { /* we're not in verbose mode */ verbose = 0; } else if (argc == 4) { if (strncmp(argv[3], "-v", 2) == 0) { /* we're in verbose mode */ verbose = 1; } else { /* unrecognized flag, complain and exit */ usage(argv[0]); } } else { /* we've been fed the wrong number of arguments - compain and exit */ usage(argv[0]); } /* read in key, checking length */ if (strlen(argv[1]) > AES_MAX_KEY_LEN*2) { fprintf(stderr, "error: too many digits in key " "(should be at most %d hexadecimal digits, found %u)\n", AES_MAX_KEY_LEN*2, (unsigned)strlen(argv[1])); exit(1); } len = hex_string_to_octet_string((char*)key, argv[1], AES_MAX_KEY_LEN*2); /* check that hex string is the right length */ if (len != 32 && len != 48 && len != 64) { fprintf(stderr, "error: bad number of digits in key " "(should be 32/48/64 hexadecimal digits, found %d)\n", len); exit(1); } key_len = len/2; /* read in plaintext, checking length */ if (strlen(argv[2]) > 16*2) { fprintf(stderr, "error: too many digits in plaintext " "(should be %d hexadecimal digits, found %u)\n", 16*2, (unsigned)strlen(argv[2])); exit(1); } len = hex_string_to_octet_string((char *)(&data), argv[2], 16*2); /* check that hex string is the right length */ if (len < 16*2) { fprintf(stderr, "error: too few digits in plaintext " "(should be %d hexadecimal digits, found %d)\n", 16*2, len); exit(1); } if (verbose) { /* print out plaintext */ printf("plaintext:\t%s\n", octet_string_hex_string((uint8_t *)&data, 16)); } /* encrypt plaintext */ status = srtp_aes_expand_encryption_key(key, key_len, &exp_key); if (status) { fprintf(stderr, "error: AES key expansion failed.\n"); exit(1); } srtp_aes_encrypt(&data, &exp_key); /* write ciphertext to output */ if (verbose) { printf("key:\t\t%s\n", octet_string_hex_string(key, key_len)); printf("ciphertext:\t"); } printf("%s\n", v128_hex_string(&data)); return 0; } ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/auth_driver.c��������������������������0000664�0000000�0000000�00000012363�13041410345�0024537�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * auth_driver.c * * a driver for auth functions * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <stdio.h> /* for printf() */ #include <stdlib.h> /* for xalloc() */ #include <unistd.h> /* for getopt() */ #include "auth.h" #include "null_auth.h" #define PRINT_DEBUG_DATA 0 extern srtp_auth_type_t tmmhv2; const uint16_t msg0[9] = { 0x6015, 0xf141, 0x5ba1, 0x29a0, 0xf604, 0xd1c, 0x2d9, 0xaa8a, 0x7931 }; /* key1 is for TAG_WORDS = 2 */ const uint16_t key1[47] = { 0xe627, 0x6a01, 0x5ea7, 0xf27a, 0xc536, 0x2192, 0x11be, 0xea35, 0xdb9d, 0x63d6, 0xfa8a, 0xfc45, 0xe08b, 0xd216, 0xced2, 0x7853, 0x1a82, 0x22f5, 0x90fb, 0x1c29, 0x708e, 0xd06f, 0x82c3, 0xbee6, 0x4f21, 0x6f33, 0x65c0, 0xd211, 0xc25e, 0x9138, 0x4fa3, 0x7c1f, 0x61ac, 0x3489, 0x2976, 0x8c19, 0x8252, 0xddbf, 0xcad3, 0xc28f, 0x68d6, 0x58dd, 0x504f, 0x2bbf, 0x0278, 0x70b7, 0xcfca }; double auth_bits_per_second(auth_t *h, int msg_len); void usage(char *prog_name) { printf("usage: %s [ -t | -v ]\n", prog_name); exit(255); } #define MAX_MSG_LEN 2048 int main (int argc, char *argv[]) { auth_t *a = NULL; err_status_t status; int i; int c; unsigned do_timing_test = 0; unsigned do_validation = 0; /* process input arguments */ while (1) { c = getopt(argc, argv, "tv"); if (c == -1) break; switch (c) { case 't': do_timing_test = 1; break; case 'v': do_validation = 1; break; default: usage(argv[0]); } } printf("auth driver\nDavid A. McGrew\nCisco Systems, Inc.\n"); if (!do_validation && !do_timing_test) usage(argv[0]); if (do_validation) { printf("running self-test for %s...", tmmhv2.description); status = tmmhv2_add_big_test(); if (status) { printf("tmmhv2_add_big_test failed with error code %d\n", status); exit(status); } status = auth_type_self_test(&tmmhv2); if (status) { printf("failed with error code %d\n", status); exit(status); } printf("passed\n"); } if (do_timing_test) { /* tmmhv2 timing test */ status = auth_type_alloc(&tmmhv2, &a, 94, 4); if (status) { fprintf(stderr, "can't allocate tmmhv2\n"); exit(status); } status = auth_init(a, (uint8_t *)key1); if (status) { printf("error initializaing auth function\n"); exit(status); } printf("timing %s (tag length %d)\n", tmmhv2.description, auth_get_tag_length(a)); for (i=8; i <= MAX_MSG_LEN; i *= 2) printf("msg len: %d\tgigabits per second: %f\n", i, auth_bits_per_second(a, i) / 1E9); status = auth_dealloc(a); if (status) { printf("error deallocating auth function\n"); exit(status); } } return 0; } #define NUM_TRIALS 100000 #include <time.h> double auth_bits_per_second(auth_t *a, int msg_len_octets) { int i; clock_t timer; uint8_t *result; int msg_len = (msg_len_octets + 1)/2; uint16_t *msg_string; /* create random message */ msg_string = (uint16_t *) srtp_crypto_alloc(msg_len_octets); if (msg_string == NULL) return 0.0; /* indicate failure */ for (i=0; i < msg_len; i++) msg_string[i] = (uint16_t) random(); /* allocate temporary storage for authentication tag */ result = srtp_crypto_alloc(auth_get_tag_length(a)); if (result == NULL) { srtp_crypto_free(msg_string); return 0.0; /* indicate failure */ } timer = clock(); for (i=0; i < NUM_TRIALS; i++) { auth_compute(a, (uint8_t *)msg_string, msg_len_octets, (uint8_t *)result); } timer = clock() - timer; srtp_crypto_free(msg_string); srtp_crypto_free(result); return (double) NUM_TRIALS * 8 * msg_len_octets * CLOCKS_PER_SEC / timer; } �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/cipher_driver.c������������������������0000664�0000000�0000000�00000041560�13041410345�0025051�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * cipher_driver.c * * A driver for the generic cipher type * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006,2013 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> /* for printf() */ #include <stdlib.h> /* for rand() */ #include <string.h> /* for memset() */ #include "getopt_s.h" #include "cipher.h" #ifdef OPENSSL #include "aes_icm_ossl.h" #include "aes_gcm_ossl.h" #else #include "aes_icm.h" #endif #define PRINT_DEBUG 0 void cipher_driver_test_throughput(srtp_cipher_t *c); srtp_err_status_t cipher_driver_self_test(srtp_cipher_type_t *ct); /* * cipher_driver_test_buffering(ct) tests the cipher's output * buffering for correctness by checking the consistency of succesive * calls */ srtp_err_status_t cipher_driver_test_buffering(srtp_cipher_t *c); /* * functions for testing cipher cache thrash */ srtp_err_status_t cipher_driver_test_array_throughput(srtp_cipher_type_t *ct, int klen, int num_cipher); void cipher_array_test_throughput(srtp_cipher_t *ca[], int num_cipher); uint64_t cipher_array_bits_per_second(srtp_cipher_t *cipher_array[], int num_cipher, unsigned octets_in_buffer, int num_trials); srtp_err_status_t cipher_array_delete(srtp_cipher_t *cipher_array[], int num_cipher); srtp_err_status_t cipher_array_alloc_init(srtp_cipher_t ***cipher_array, int num_ciphers, srtp_cipher_type_t *ctype, int klen); void usage(char *prog_name) { printf("usage: %s [ -t | -v | -a ]\n", prog_name); exit(255); } void check_status(srtp_err_status_t s) { if (s) { printf("error (code %d)\n", s); exit(s); } return; } /* * null_cipher and srtp_aes_icm are the cipher meta-objects * defined in the files in crypto/cipher subdirectory. these are * declared external so that we can use these cipher types here */ extern srtp_cipher_type_t srtp_null_cipher; extern srtp_cipher_type_t srtp_aes_icm; #ifdef OPENSSL #ifndef SRTP_NO_AES192 extern srtp_cipher_type_t srtp_aes_icm_192; #endif extern srtp_cipher_type_t srtp_aes_icm_256; extern srtp_cipher_type_t srtp_aes_gcm_128_openssl; extern srtp_cipher_type_t srtp_aes_gcm_256_openssl; #endif int main(int argc, char *argv[]) { srtp_cipher_t *c = NULL; srtp_err_status_t status; unsigned char test_key[48] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, }; int q; unsigned do_timing_test = 0; unsigned do_validation = 0; unsigned do_array_timing_test = 0; /* process input arguments */ while (1) { q = getopt_s(argc, argv, "tva"); if (q == -1) break; switch (q) { case 't': do_timing_test = 1; break; case 'v': do_validation = 1; break; case 'a': do_array_timing_test = 1; break; default: usage(argv[0]); } } printf("cipher test driver\n" "David A. McGrew\n" "Cisco Systems, Inc.\n"); if (!do_validation && !do_timing_test && !do_array_timing_test) usage(argv[0]); /* arry timing (cache thrash) test */ if (do_array_timing_test) { int max_num_cipher = 1 << 16; /* number of ciphers in cipher_array */ int num_cipher; for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) cipher_driver_test_array_throughput(&srtp_null_cipher, 0, num_cipher); for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) cipher_driver_test_array_throughput(&srtp_aes_icm, 30, num_cipher); #ifndef OPENSSL for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) cipher_driver_test_array_throughput(&srtp_aes_icm, 46, num_cipher); #else #ifndef SRTP_NO_AES192 for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) cipher_driver_test_array_throughput(&srtp_aes_icm_192, 38, num_cipher); #endif for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) cipher_driver_test_array_throughput(&srtp_aes_icm_256, 46, num_cipher); for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) { cipher_driver_test_array_throughput(&srtp_aes_gcm_128_openssl, SRTP_AES_128_GCM_KEYSIZE_WSALT, num_cipher); } for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) { cipher_driver_test_array_throughput(&srtp_aes_gcm_256_openssl, SRTP_AES_256_GCM_KEYSIZE_WSALT, num_cipher); } #endif } if (do_validation) { cipher_driver_self_test(&srtp_null_cipher); cipher_driver_self_test(&srtp_aes_icm); #ifdef OPENSSL #ifndef SRTP_NO_AES192 cipher_driver_self_test(&srtp_aes_icm_192); #endif cipher_driver_self_test(&srtp_aes_icm_256); cipher_driver_self_test(&srtp_aes_gcm_128_openssl); cipher_driver_self_test(&srtp_aes_gcm_256_openssl); #endif } /* do timing and/or buffer_test on srtp_null_cipher */ status = srtp_cipher_type_alloc(&srtp_null_cipher, &c, 0, 0); check_status(status); status = srtp_cipher_init(c, NULL); check_status(status); if (do_timing_test) cipher_driver_test_throughput(c); if (do_validation) { status = cipher_driver_test_buffering(c); check_status(status); } status = srtp_cipher_dealloc(c); check_status(status); /* run the throughput test on the aes_icm cipher (128-bit key) */ status = srtp_cipher_type_alloc(&srtp_aes_icm, &c, 30, 0); if (status) { fprintf(stderr, "error: can't allocate cipher\n"); exit(status); } status = srtp_cipher_init(c, test_key); check_status(status); if (do_timing_test) cipher_driver_test_throughput(c); if (do_validation) { status = cipher_driver_test_buffering(c); check_status(status); } status = srtp_cipher_dealloc(c); check_status(status); /* repeat the tests with 256-bit keys */ #ifndef OPENSSL status = srtp_cipher_type_alloc(&srtp_aes_icm, &c, 46, 0); #else status = srtp_cipher_type_alloc(&srtp_aes_icm_256, &c, 46, 0); #endif if (status) { fprintf(stderr, "error: can't allocate cipher\n"); exit(status); } status = srtp_cipher_init(c, test_key); check_status(status); if (do_timing_test) cipher_driver_test_throughput(c); if (do_validation) { status = cipher_driver_test_buffering(c); check_status(status); } status = srtp_cipher_dealloc(c); check_status(status); #ifdef OPENSSL /* run the throughput test on the aes_gcm_128_openssl cipher */ status = srtp_cipher_type_alloc(&srtp_aes_gcm_128_openssl, &c, SRTP_AES_128_GCM_KEYSIZE_WSALT, 8); if (status) { fprintf(stderr, "error: can't allocate GCM 128 cipher\n"); exit(status); } status = srtp_cipher_init(c, test_key); check_status(status); if (do_timing_test) { cipher_driver_test_throughput(c); } if (do_validation) { status = cipher_driver_test_buffering(c); check_status(status); } status = srtp_cipher_dealloc(c); check_status(status); /* run the throughput test on the aes_gcm_256_openssl cipher */ status = srtp_cipher_type_alloc(&srtp_aes_gcm_256_openssl, &c, SRTP_AES_256_GCM_KEYSIZE_WSALT, 16); if (status) { fprintf(stderr, "error: can't allocate GCM 256 cipher\n"); exit(status); } status = srtp_cipher_init(c, test_key); check_status(status); if (do_timing_test) { cipher_driver_test_throughput(c); } if (do_validation) { status = cipher_driver_test_buffering(c); check_status(status); } status = srtp_cipher_dealloc(c); check_status(status); #endif return 0; } void cipher_driver_test_throughput(srtp_cipher_t *c) { int i; int min_enc_len = 32; int max_enc_len = 2048; /* should be a power of two */ int num_trials = 1000000; printf("timing %s throughput, key length %d:\n", c->type->description, c->key_len); fflush(stdout); for (i=min_enc_len; i <= max_enc_len; i = i * 2) printf("msg len: %d\tgigabits per second: %f\n", i, srtp_cipher_bits_per_second(c, i, num_trials) / 1e9); } srtp_err_status_t cipher_driver_self_test(srtp_cipher_type_t *ct) { srtp_err_status_t status; printf("running cipher self-test for %s...", ct->description); status = srtp_cipher_type_self_test(ct); if (status) { printf("failed with error code %d\n", status); exit(status); } printf("passed\n"); return srtp_err_status_ok; } /* * cipher_driver_test_buffering(ct) tests the cipher's output * buffering for correctness by checking the consistency of succesive * calls */ #define INITIAL_BUFLEN 1024 srtp_err_status_t cipher_driver_test_buffering(srtp_cipher_t *c) { int i, j, num_trials = 1000; unsigned len, buflen = INITIAL_BUFLEN; uint8_t buffer0[INITIAL_BUFLEN], buffer1[INITIAL_BUFLEN], *current, *end; uint8_t idx[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x34 }; srtp_err_status_t status; printf("testing output buffering for cipher %s...", c->type->description); for (i=0; i < num_trials; i++) { /* set buffers to zero */ for (j=0; j < (int) buflen; j++) { buffer0[j] = buffer1[j] = 0; } /* initialize cipher */ status = srtp_cipher_set_iv(c, (uint8_t*)idx, srtp_direction_encrypt); if (status) return status; /* generate 'reference' value by encrypting all at once */ status = srtp_cipher_encrypt(c, buffer0, &buflen); if (status) return status; /* re-initialize cipher */ status = srtp_cipher_set_iv(c, (uint8_t*)idx, srtp_direction_encrypt); if (status) return status; /* now loop over short lengths until buffer1 is encrypted */ current = buffer1; end = buffer1 + buflen; while (current < end) { /* choose a short length */ len = rand() & 0x01f; /* make sure that len doesn't cause us to overreach the buffer */ if (current + len > end) len = end - current; status = srtp_cipher_encrypt(c, current, &len); if (status) return status; /* advance pointer into buffer1 to reflect encryption */ current += len; /* if buffer1 is all encrypted, break out of loop */ if (current == end) break; } /* compare buffers */ for (j=0; j < (int) buflen; j++) { if (buffer0[j] != buffer1[j]) { #if PRINT_DEBUG printf("test case %d failed at byte %d\n", i, j); printf("computed: %s\n", octet_string_hex_string(buffer1, buflen)); printf("expected: %s\n", octet_string_hex_string(buffer0, buflen)); #endif return srtp_err_status_algo_fail; } } } printf("passed\n"); return srtp_err_status_ok; } /* * The function cipher_test_throughput_array() tests the effect of CPU * cache thrash on cipher throughput. * * cipher_array_alloc_init(ctype, array, num_ciphers) creates an array * of srtp_cipher_t of type ctype */ srtp_err_status_t cipher_array_alloc_init(srtp_cipher_t ***ca, int num_ciphers, srtp_cipher_type_t *ctype, int klen) { int i, j; srtp_err_status_t status; uint8_t *key; srtp_cipher_t **cipher_array; /* pad klen allocation, to handle aes_icm reading 16 bytes for the 14-byte salt */ int klen_pad = ((klen + 15) >> 4) << 4; /* allocate array of pointers to ciphers */ cipher_array = (srtp_cipher_t **) malloc(sizeof(srtp_cipher_t *) * num_ciphers); if (cipher_array == NULL) return srtp_err_status_alloc_fail; /* set ca to location of cipher_array */ *ca = cipher_array; /* allocate key */ key = srtp_crypto_alloc(klen_pad); if (key == NULL) { free(cipher_array); return srtp_err_status_alloc_fail; } /* allocate and initialize an array of ciphers */ for (i=0; i < num_ciphers; i++) { /* allocate cipher */ status = srtp_cipher_type_alloc(ctype, cipher_array, klen, 16); if (status) return status; /* generate random key and initialize cipher */ for (j=0; j < klen; j++) key[j] = (uint8_t) rand(); for (; j < klen_pad; j++) key[j] = 0; status = srtp_cipher_init(*cipher_array, key); if (status) return status; /* printf("%dth cipher is at %p\n", i, *cipher_array); */ /* printf("%dth cipher description: %s\n", i, */ /* (*cipher_array)->type->description); */ /* advance cipher array pointer */ cipher_array++; } srtp_crypto_free(key); return srtp_err_status_ok; } srtp_err_status_t cipher_array_delete(srtp_cipher_t *cipher_array[], int num_cipher) { int i; for (i=0; i < num_cipher; i++) { srtp_cipher_dealloc(cipher_array[i]); } free(cipher_array); return srtp_err_status_ok; } /* * cipher_array_bits_per_second(c, l, t) computes (an estimate of) the * number of bits that a cipher implementation can encrypt in a second * when distinct keys are used to encrypt distinct messages * * c is a cipher (which MUST be allocated an initialized already), l * is the length in octets of the test data to be encrypted, and t is * the number of trials * * if an error is encountered, the value 0 is returned */ uint64_t cipher_array_bits_per_second(srtp_cipher_t *cipher_array[], int num_cipher, unsigned octets_in_buffer, int num_trials) { int i; v128_t nonce; clock_t timer; unsigned char *enc_buf; int cipher_index = rand() % num_cipher; /* Over-alloc, for NIST CBC padding */ enc_buf = srtp_crypto_alloc(octets_in_buffer+17); if (enc_buf == NULL) return 0; /* indicate bad parameters by returning null */ memset(enc_buf, 0, octets_in_buffer); /* time repeated trials */ v128_set_to_zero(&nonce); timer = clock(); for(i=0; i < num_trials; i++, nonce.v32[3] = i) { /* length parameter to srtp_cipher_encrypt is in/out -- out is total, padded * length -- so reset it each time. */ unsigned octets_to_encrypt = octets_in_buffer; /* encrypt buffer with cipher */ srtp_cipher_set_iv(cipher_array[cipher_index], (uint8_t*)&nonce, srtp_direction_encrypt); srtp_cipher_encrypt(cipher_array[cipher_index], enc_buf, &octets_to_encrypt); /* choose a cipher at random from the array*/ cipher_index = (*((uint32_t *)enc_buf)) % num_cipher; } timer = clock() - timer; free(enc_buf); if (timer == 0) { /* Too fast! */ return 0; } return (uint64_t)CLOCKS_PER_SEC * num_trials * 8 * octets_in_buffer / timer; } void cipher_array_test_throughput(srtp_cipher_t *ca[], int num_cipher) { int i; int min_enc_len = 16; int max_enc_len = 2048; /* should be a power of two */ int num_trials = 1000000; printf("timing %s throughput with key length %d, array size %d:\n", (ca[0])->type->description, (ca[0])->key_len, num_cipher); fflush(stdout); for (i=min_enc_len; i <= max_enc_len; i = i * 4) printf("msg len: %d\tgigabits per second: %f\n", i, cipher_array_bits_per_second(ca, num_cipher, i, num_trials) / 1e9); } srtp_err_status_t cipher_driver_test_array_throughput(srtp_cipher_type_t *ct, int klen, int num_cipher) { srtp_cipher_t **ca = NULL; srtp_err_status_t status; status = cipher_array_alloc_init(&ca, num_cipher, ct, klen); if (status) { printf("error: cipher_array_alloc_init() failed with error code %d\n", status); return status; } cipher_array_test_throughput(ca, num_cipher); cipher_array_delete(ca, num_cipher); return srtp_err_status_ok; } ������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/datatypes_driver.c���������������������0000664�0000000�0000000�00000014263�13041410345�0025575�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * datatypes_driver.c * * a test driver for crypto/math datatypes * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> /* for printf() */ #include <string.h> /* for strlen() */ #include "datatypes.h" #include "util.h" void byte_order(void); void test_hex_string_funcs(void); void print_string(char *s); void test_bswap(void); int main (void) { /* * this program includes various and sundry tests for fundamental * datatypes. it's a grab-bag of throwaway code, retained only in * case of future problems */ int i, j; v128_t x; char *r = "The Moving Finger writes; and, having writ,\n" "Moves on: nor all thy Piety nor Wit\n" "Shall lure it back to cancel half a Line,\n" "Nor all thy Tears wash out a Word of it."; char *s = "incomplet"; print_string(r); print_string(s); byte_order(); test_hex_string_funcs(); for (j=0; j < 128; j++) { v128_set_to_zero(&x); /* x.v32[0] = (1 << j); */ v128_set_bit(&x, j); printf("%s\n", v128_bit_string(&x)); v128_clear_bit(&x, j); printf("%s\n", v128_bit_string(&x)); } printf("----------------------------------------------\n"); v128_set_to_zero(&x); for (i=0; i < 128; i++) { v128_set_bit(&x, i); } printf("%s\n", v128_bit_string(&x)); printf("----------------------------------------------\n"); v128_set_to_zero(&x); v128_set_bit(&x, 0); for (i=0; i < 128; i++) { printf("%s\n", v128_bit_string(&x)); v128_right_shift(&x, 1); } printf("----------------------------------------------\n"); v128_set_to_zero(&x); v128_set_bit(&x, 127); for (i=0; i < 128; i++) { printf("%s\n", v128_bit_string(&x)); v128_left_shift(&x, 1); } printf("----------------------------------------------\n"); for (i=0; i < 128; i++) { v128_set_to_zero(&x); v128_set_bit(&x, 127); v128_left_shift(&x, i); printf("%s\n", v128_bit_string(&x)); } printf("----------------------------------------------\n"); v128_set_to_zero(&x); for (i=0; i < 128; i+=2) { v128_set_bit(&x, i); } printf("bit_string: { %s }\n", v128_bit_string(&x)); printf("get_bit: { "); for (i=0; i < 128; i++) { if (v128_get_bit(&x, i) == 1) printf("1"); else printf("0"); } printf(" } \n"); test_bswap(); return 0; } /* byte_order() prints out byte ordering of datatypes */ void byte_order(void) { int i; v128_t e; #if 0 v16_t b; v32_t c; v64_t d; for (i=0; i < sizeof(b); i++) b.octet[i] = i; for (i=0; i < sizeof(c); i++) c.octet[i] = i; for (i=0; i < sizeof(d); i++) d.octet[i] = i; printf("v128_t:\t%s\n", v128_hex_string(&e)); printf("v64_t:\t%s\n", v64_hex_string(&d)); printf("v32_t:\t%s\n", v32_hex_string(c)); printf("v16_t:\t%s\n", v16_hex_string(b)); c.value = 0x01020304; printf("v32_t:\t%s\n", v32_hex_string(c)); b.value = 0x0102; printf("v16_t:\t%s\n", v16_hex_string(b)); printf("uint16_t ordering:\n"); c.value = 0x00010002; printf("v32_t:\t%x%x\n", c.v16[0], c.v16[1]); #endif printf("byte ordering of crypto/math datatypes:\n"); for (i=0; i < sizeof(e); i++) e.v8[i] = i; printf("v128_t: %s\n", v128_hex_string(&e)); } void test_hex_string_funcs(void) { char hex1[] = "abadcafe"; char hex2[] = "0123456789abcdefqqqqq"; char raw[10]; int len; len = hex_string_to_octet_string(raw, hex1, strlen(hex1)); printf("computed length: %d\tstring: %s\n", len, octet_string_hex_string(raw, len/2)); printf("expected length: %u\tstring: %s\n", (unsigned)strlen(hex1), hex1); len = hex_string_to_octet_string(raw, hex2, strlen(hex2)); printf("computed length: %d\tstring: %s\n", len, octet_string_hex_string(raw, len/2)); printf("expected length: %d\tstring: %s\n", 16, "0123456789abcdef"); } void print_string(char *s) { size_t i; printf("%s\n", s); printf("strlen(s) = %u\n", (unsigned)strlen(s)); printf("{ "); for (i=0; i < strlen(s); i++) { printf("0x%x, ", s[i]); if (((i+1) % 8) == 0) printf("\n "); } printf("}\n"); } void test_bswap(void) { uint32_t x = 0x11223344; uint64_t y = 0x1122334455667788LL; printf("before: %0x\nafter: %0x\n", x, (unsigned int)be32_to_cpu(x)); printf("before: %0llx\nafter: %0llx\n", (unsigned long long)y, (unsigned long long)be64_to_cpu(y)); y = 1234; printf("1234: %0llx\n", (unsigned long long)y); printf("as octet string: %s\n", octet_string_hex_string((uint8_t *) &y, 8)); y = be64_to_cpu(y); printf("bswapped octet string: %s\n", octet_string_hex_string((uint8_t *) &y, 8)); } ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/env.c����������������������������������0000664�0000000�0000000�00000005342�13041410345�0023012�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * env.c * * prints out a brief report on the build environment * * David McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <stdio.h> #include <string.h> /* for srtcmp() */ #include "config.h" int main(void) { int err_count = 0; #ifdef WORDS_BIGENDIAN printf("CPU set to big-endian\t\t\t(WORDS_BIGENDIAN == 1)\n"); #else printf("CPU set to little-endian\t\t(WORDS_BIGENDIAN == 0)\n"); #endif #ifdef CPU_RISC printf("CPU set to RISC\t\t\t\t(CPU_RISC == 1)\n"); #elif defined(CPU_CISC) printf("CPU set to CISC\t\t\t\t(CPU_CISC == 1)\n"); #else printf("CPU set to an unknown type, probably due to a configuration error\n"); err_count++; #endif #ifdef CPU_ALTIVEC printf("CPU set to ALTIVEC\t\t\t\t(CPU_ALTIVEC == 0)\n"); #endif #ifndef NO_64BIT_MATH printf("using native 64-bit type\t\t(NO_64_BIT_MATH == 0)\n"); #else printf("using built-in 64-bit math\t\t(NO_64_BIT_MATH == 1)\n"); #endif #ifdef ERR_REPORTING_STDOUT printf("using stdout for error reporting\t(ERR_REPORTING_STDOUT == 1)\n"); #endif if (err_count) printf("warning: configuration is probably in error " "(found %d problems)\n", err_count); return err_count; } ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/kernel_driver.c������������������������0000664�0000000�0000000�00000006617�13041410345�0025063�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * kernel_driver.c * * a test driver for the crypto_kernel * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright(c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> /* for printf() */ #include "getopt_s.h" #include "crypto_kernel.h" void usage(char *prog_name) { printf("usage: %s [ -v ][ -d debug_module ]*\n", prog_name); exit(255); } int main (int argc, char *argv[]) { int q; int do_validation = 0; srtp_err_status_t status; if (argc == 1) usage(argv[0]); /* initialize kernel - we need to do this before anything else */ status = srtp_crypto_kernel_init(); if (status) { printf("error: srtp_crypto_kernel init failed\n"); exit(1); } printf("srtp_crypto_kernel successfully initalized\n"); /* process input arguments */ while (1) { q = getopt_s(argc, argv, "vd:"); if (q == -1) break; switch (q) { case 'v': do_validation = 1; break; case 'd': status = srtp_crypto_kernel_set_debug_module(optarg_s, 1); if (status) { printf("error: set debug module (%s) failed\n", optarg_s); exit(1); } break; default: usage(argv[0]); } } if (do_validation) { printf("checking srtp_crypto_kernel status...\n"); status = srtp_crypto_kernel_status(); if (status) { printf("failed\n"); exit(1); } printf("srtp_crypto_kernel passed self-tests\n"); } status = srtp_crypto_kernel_shutdown(); if (status) { printf("error: srtp_crypto_kernel shutdown failed\n"); exit(1); } printf("srtp_crypto_kernel successfully shut down\n"); return 0; } /* * crypto_kernel_cipher_test() is a test of the cipher interface * of the crypto_kernel */ srtp_err_status_t crypto_kernel_cipher_test(void) { /* not implemented yet! */ return srtp_err_status_ok; } �����������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/sha1_driver.c��������������������������0000664�0000000�0000000�00000036643�13041410345�0024441�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * sha1_driver.c * * a test driver for SHA-1 * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> #include <string.h> #include "sha1.h" #include "util.h" #define SHA_PASS 0 #define SHA_FAIL 1 #define MAX_HASH_DATA_LEN 1024 #define MAX_HASH_OUT_LEN 20 typedef struct hash_test_case_t { unsigned data_len; /* number of octets in data */ unsigned hash_len; /* number of octets output by hash */ uint8_t data[MAX_HASH_DATA_LEN]; /* message data */ uint8_t hash[MAX_HASH_OUT_LEN]; /* expected hash output */ struct hash_test_case_t *next_test_case; } hash_test_case_t; hash_test_case_t *sha1_test_case_list; srtp_err_status_t hash_test_case_add(hash_test_case_t **list_ptr, char *hex_data, unsigned data_len, char *hex_hash, unsigned hash_len) { hash_test_case_t *list_head = *list_ptr; hash_test_case_t *test_case; unsigned tmp_len; test_case = malloc(sizeof(hash_test_case_t)); if (test_case == NULL) return srtp_err_status_alloc_fail; tmp_len = hex_string_to_octet_string((char *)test_case->data, hex_data, data_len*2); if (tmp_len != data_len*2) return srtp_err_status_parse_err; tmp_len = hex_string_to_octet_string((char *)test_case->hash, hex_hash, hash_len*2); if (tmp_len != hash_len*2) return srtp_err_status_parse_err; test_case->data_len = data_len; test_case->hash_len = hash_len; /* add the new test case to the head of the list */ test_case->next_test_case = list_head; *list_ptr = test_case; return srtp_err_status_ok; } srtp_err_status_t sha1_test_case_validate(const hash_test_case_t *test_case) { srtp_sha1_ctx_t ctx; uint32_t hash_value[5]; if (test_case == NULL) return srtp_err_status_bad_param; if (test_case->hash_len != 20) return srtp_err_status_bad_param; if (test_case->data_len > MAX_HASH_DATA_LEN) return srtp_err_status_bad_param; srtp_sha1_init(&ctx); srtp_sha1_update(&ctx, test_case->data, test_case->data_len); srtp_sha1_final(&ctx, hash_value); if (0 == memcmp(test_case->hash, hash_value, 20)) { #if VERBOSE printf("PASSED: reference value: %s\n", octet_string_hex_string((const uint8_t *)test_case->hash, 20)); printf("PASSED: computed value: %s\n", octet_string_hex_string((const uint8_t *)hash_value, 20)); #endif return srtp_err_status_ok; } printf("reference value: %s\n", octet_string_hex_string((const uint8_t *)test_case->hash, 20)); printf("computed value: %s\n", octet_string_hex_string((const uint8_t *)hash_value, 20)); return srtp_err_status_algo_fail; } struct hex_sha1_test_case_t { unsigned bit_len; char hex_data[MAX_HASH_DATA_LEN*2]; char hex_hash[40]; }; srtp_err_status_t sha1_add_test_cases(void) { int i; srtp_err_status_t err; /* * these test cases are taken from the "SHA-1 Sample Vectors" * provided by NIST at http://csrc.nist.gov/cryptval/shs.html */ struct hex_sha1_test_case_t tc[] = { { 0, "", "da39a3ee5e6b4b0d3255bfef95601890afd80709" }, { 8, "a8", "99f2aa95e36f95c2acb0eaf23998f030638f3f15" }, { 16, "3000", "f944dcd635f9801f7ac90a407fbc479964dec024" }, { 24, "42749e", "a444319e9b6cc1e8464c511ec0969c37d6bb2619" }, { 32, "9fc3fe08", "16a0ff84fcc156fd5d3ca3a744f20a232d172253" }, { 40, "b5c1c6f1af", "fec9deebfcdedaf66dda525e1be43597a73a1f93" }, { 48, "e47571e5022e", "8ce051181f0ed5e9d0c498f6bc4caf448d20deb5" }, { 56, "3e1b28839fb758", "67da53837d89e03bf652ef09c369a3415937cfd3" }, { 64, "a81350cbb224cb90", "305e4ff9888ad855a78573cddf4c5640cce7e946" }, { 72, "c243d167923dec3ce1", "5902b77b3265f023f9bbc396ba1a93fa3509bde7" }, { 80, "50ac18c59d6a37a29bf4", "fcade5f5d156bf6f9af97bdfa9c19bccfb4ff6ab" }, { 88, "98e2b611ad3b1cccf634f6", "1d20fbe00533c10e3cbd6b27088a5de0c632c4b5" }, { 96, "73fe9afb68e1e8712e5d4eec", "7e1b7e0f7a8f3455a9c03e9580fd63ae205a2d93" }, { 104, "9e701ed7d412a9226a2a130e66", "706f0677146307b20bb0e8d6311e329966884d13" }, { 112, "6d3ee90413b0a7cbf69e5e6144ca", "a7241a703aaf0d53fe142f86bf2e849251fa8dff" }, { 120, "fae24d56514efcb530fd4802f5e71f", "400f53546916d33ad01a5e6df66822dfbdc4e9e6" }, { 128, "c5a22dd6eda3fe2bdc4ddb3ce6b35fd1", "fac8ab93c1ae6c16f0311872b984f729dc928ccd" }, { 136, "d98cded2adabf08fda356445c781802d95", "fba6d750c18da58f6e2aab10112b9a5ef3301b3b" }, { 144, "bcc6d7087a84f00103ccb32e5f5487a751a2", "29d27c2d44c205c8107f0351b05753ac708226b6" }, { 152, "36ecacb1055434190dbbc556c48bafcb0feb0d", "b971bfc1ebd6f359e8d74cb7ecfe7f898d0ba845" }, { 160, "5ff9edb69e8f6bbd498eb4537580b7fba7ad31d0", "96d08c430094b9fcc164ad2fb6f72d0a24268f68" }, { 168, "c95b441d8270822a46a798fae5defcf7b26abace36", "a287ea752a593d5209e287881a09c49fa3f0beb1" }, { 176, "83104c1d8a55b28f906f1b72cb53f68cbb097b44f860", "a06c713779cbd88519ed4a585ac0cb8a5e9d612b" }, { 184, "755175528d55c39c56493d697b790f099a5ce741f7754b", "bff7d52c13a3688132a1d407b1ab40f5b5ace298" }, { 192, "088fc38128bbdb9fd7d65228b3184b3faac6c8715f07272f", "c7566b91d7b6f56bdfcaa9781a7b6841aacb17e9" }, { 200, "a4a586eb9245a6c87e3adf1009ac8a49f46c07e14185016895", "ffa30c0b5c550ea4b1e34f8a60ec9295a1e06ac1" }, { 208, "8e7c555270c006092c2a3189e2a526b873e2e269f0fb28245256", "29e66ed23e914351e872aa761df6e4f1a07f4b81" }, { 216, "a5f3bfa6bb0ba3b59f6b9cbdef8a558ec565e8aa3121f405e7f2f0", "b28cf5e5b806a01491d41f69bd9248765c5dc292" }, { 224, "589054f0d2bd3c2c85b466bfd8ce18e6ec3e0b87d944cd093ba36469", "60224fb72c46069652cd78bcd08029ef64da62f3" }, { 232, "a0abb12083b5bbc78128601bf1cbdbc0fdf4b862b24d899953d8da0ff3", "b72c4a86f72608f24c05f3b9088ef92fba431df7" }, { 240, "82143f4cea6fadbf998e128a8811dc75301cf1db4f079501ea568da68eeb", "73779ad5d6b71b9b8328ef7220ff12eb167076ac" }, { 248, "9f1231dd6df1ff7bc0b0d4f989d048672683ce35d956d2f57913046267e6f3", "a09671d4452d7cf50015c914a1e31973d20cc1a0" }, { 256, "041c512b5eed791f80d3282f3a28df263bb1df95e1239a7650e5670fc2187919", "e88cdcd233d99184a6fd260b8fca1b7f7687aee0" }, { 264, "17e81f6ae8c2e5579d69dafa6e070e7111461552d314b691e7a3e7a4feb3fae418", "010def22850deb1168d525e8c84c28116cb8a269" }, { 272, "d15976b23a1d712ad28fad04d805f572026b54dd64961fda94d5355a0cc98620cf77", "aeaa40ba1717ed5439b1e6ea901b294ba500f9ad" }, { 280, "09fce4d434f6bd32a44e04b848ff50ec9f642a8a85b37a264dc73f130f22838443328f", "c6433791238795e34f080a5f1f1723f065463ca0" }, { 288, "f17af27d776ec82a257d8d46d2b46b639462c56984cc1be9c1222eadb8b26594a25c709d", "e21e22b89c1bb944a32932e6b2a2f20d491982c3" }, { 296, "b13ce635d6f8758143ffb114f2f601cb20b6276951416a2f94fbf4ad081779d79f4f195b22", "575323a9661f5d28387964d2ba6ab92c17d05a8a" }, { 304, 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"ee3d72da3a44d971578972a8e6780ce64941267e0f7d0179b214fa97855e1790e888e09fbe3a70412176cb3b54", "7b13bb0dbf14964bd63b133ac85e22100542ef55" }, { 368, "d4d4c7843d312b30f610b3682254c8be96d5f6684503f8fbfbcd15774fc1b084d3741afb8d24aaa8ab9c104f7258", "c314d2b6cf439be678d2a74e890d96cfac1c02ed" }, { 376, "32c094944f5936a190a0877fb9178a7bf60ceae36fd530671c5b38c5dbd5e6a6c0d615c2ac8ad04b213cc589541cf6", "4d0be361e410b47a9d67d8ce0bb6a8e01c53c078" }, { 384, "e5d3180c14bf27a5409fa12b104a8fd7e9639609bfde6ee82bbf9648be2546d29688a65e2e3f3da47a45ac14343c9c02", "e5353431ffae097f675cbf498869f6fbb6e1c9f2" }, { 392, "e7b6e4b69f724327e41e1188a37f4fe38b1dba19cbf5a7311d6e32f1038e97ab506ee05aebebc1eed09fc0e357109818b9", "b8720a7068a085c018ab18961de2765aa6cd9ac4" }, { 400, "bc880cb83b8ac68ef2fedc2da95e7677ce2aa18b0e2d8b322701f67af7d5e7a0d96e9e33326ccb7747cfff0852b961bfd475", "b0732181568543ba85f2b6da602b4b065d9931aa" }, { 408, 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"46fe5ed326c8fe376fcc92dc9e2714e2240d3253b105adfbb256ff7a19bc40975c604ad7c0071c4fd78a7cb64786e1bece548fa4833c04065fe593f6fb10", "f220a7457f4588d639dc21407c942e9843f8e26b" }, { 504, "836dfa2524d621cf07c3d2908835de859e549d35030433c796b81272fd8bc0348e8ddbc7705a5ad1fdf2155b6bc48884ac0cd376925f069a37849c089c8645", "ddd2117b6e309c233ede85f962a0c2fc215e5c69" }, { 512, "7e3a4c325cb9c52b88387f93d01ae86d42098f5efa7f9457388b5e74b6d28b2438d42d8b64703324d4aa25ab6aad153ae30cd2b2af4d5e5c00a8a2d0220c6116", "a3054427cdb13f164a610b348702724c808a0dcc" } }; for (i=0; i < 65; i++) { err = hash_test_case_add(&sha1_test_case_list, tc[i].hex_data, tc[i].bit_len/8, tc[i].hex_hash, 20); if (err) { printf("error adding hash test case (code %d)\n", err); return err; } } return srtp_err_status_ok; } srtp_err_status_t sha1_dealloc_test_cases(void) { hash_test_case_t *t, *next; for (t = sha1_test_case_list; t != NULL; t = next) { next = t->next_test_case; free(t); } sha1_test_case_list = NULL; return srtp_err_status_ok; } srtp_err_status_t sha1_validate(void) { hash_test_case_t *test_case; srtp_err_status_t err; err = sha1_add_test_cases(); if (err) { printf("error adding SHA1 test cases (error code %d)\n", err); return err; } if (sha1_test_case_list == NULL) return srtp_err_status_cant_check; test_case = sha1_test_case_list; while (test_case != NULL) { err = sha1_test_case_validate(test_case); if (err) { printf("error validating hash test case (error code %d)\n", err); return err; } test_case = test_case->next_test_case; } sha1_dealloc_test_cases(); return srtp_err_status_ok; } int main (void) { srtp_err_status_t err; printf("sha1 test driver\n"); err = sha1_validate(); if (err) { printf("SHA1 did not pass validation testing\n"); return 1; } printf("SHA1 passed validation tests\n"); return 0; } ���������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/crypto/test/stat_driver.c��������������������������0000664�0000000�0000000�00000017404�13041410345�0024552�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * stat-driver.c * * test driver for the stat_test functions * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> /* for printf() */ #include "err.h" #include "stat.h" #include "srtp.h" #include "cipher.h" typedef struct { void *state; } random_source_t; srtp_err_status_t random_source_alloc(void); void err_check(srtp_err_status_t s) { if (s) { printf("error (code %d)\n", s); exit(1); } } int main (int argc, char *argv[]) { uint8_t buffer[2532]; unsigned int buf_len = 2500; int i, j; extern srtp_cipher_type_t srtp_aes_icm; #ifdef OPENSSL extern srtp_cipher_type_t srtp_aes_gcm_128_openssl; extern srtp_cipher_type_t srtp_aes_gcm_256_openssl; #endif srtp_cipher_t *c; uint8_t key[46] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 }; v128_t nonce; int num_trials = 500; int num_fail; printf("statistical tests driver\n"); v128_set_to_zero(&nonce); for (i=0; i < 2500; i++) buffer[i] = 0; /* run tests */ printf("running stat_tests on all-null buffer, expecting failure\n"); printf("monobit %d\n", stat_test_monobit(buffer)); printf("poker %d\n", stat_test_poker(buffer)); printf("runs %d\n", stat_test_runs(buffer)); for (i=0; i < 2500; i++) buffer[i] = rand(); printf("running stat_tests on rand(), expecting success\n"); printf("monobit %d\n", stat_test_monobit(buffer)); printf("poker %d\n", stat_test_poker(buffer)); printf("runs %d\n", stat_test_runs(buffer)); printf("running stat_tests on AES-128-ICM, expecting success\n"); /* set buffer to cipher output */ for (i=0; i < 2500; i++) buffer[i] = 0; err_check(srtp_cipher_type_alloc(&srtp_aes_icm, &c, 30, 0)); err_check(srtp_cipher_init(c, key)); err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); /* run tests on cipher outout */ printf("monobit %d\n", stat_test_monobit(buffer)); printf("poker %d\n", stat_test_poker(buffer)); printf("runs %d\n", stat_test_runs(buffer)); printf("runs test (please be patient): "); fflush(stdout); num_fail = 0; v128_set_to_zero(&nonce); for(j=0; j < num_trials; j++) { for (i=0; i < 2500; i++) buffer[i] = 0; nonce.v32[3] = i; err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); if (stat_test_runs(buffer)) { num_fail++; } } printf("%d failures in %d tests\n", num_fail, num_trials); printf("(nota bene: a small fraction of stat_test failures does not \n" "indicate that the random source is invalid)\n"); err_check(srtp_cipher_dealloc(c)); printf("running stat_tests on AES-256-ICM, expecting success\n"); /* set buffer to cipher output */ for (i=0; i < 2500; i++) buffer[i] = 0; err_check(srtp_cipher_type_alloc(&srtp_aes_icm, &c, 46, 0)); err_check(srtp_cipher_init(c, key)); err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); /* run tests on cipher outout */ printf("monobit %d\n", stat_test_monobit(buffer)); printf("poker %d\n", stat_test_poker(buffer)); printf("runs %d\n", stat_test_runs(buffer)); printf("runs test (please be patient): "); fflush(stdout); num_fail = 0; v128_set_to_zero(&nonce); for(j=0; j < num_trials; j++) { for (i=0; i < 2500; i++) buffer[i] = 0; nonce.v32[3] = i; err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); if (stat_test_runs(buffer)) { num_fail++; } } #ifdef OPENSSL { printf("running stat_tests on AES-128-GCM, expecting success\n"); /* set buffer to cipher output */ for (i=0; i < 2500; i++) { buffer[i] = 0; } err_check(srtp_cipher_type_alloc(&srtp_aes_gcm_128_openssl, &c, SRTP_AES_128_GCM_KEYSIZE_WSALT, 8)); err_check(srtp_cipher_init(c, key)); err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); /* run tests on cipher outout */ printf("monobit %d\n", stat_test_monobit(buffer)); printf("poker %d\n", stat_test_poker(buffer)); printf("runs %d\n", stat_test_runs(buffer)); fflush(stdout); num_fail = 0; v128_set_to_zero(&nonce); for(j=0; j < num_trials; j++) { for (i=0; i < 2500; i++) { buffer[i] = 0; } nonce.v32[3] = i; err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); buf_len = 2500; if (stat_test_runs(buffer)) { num_fail++; } } printf("running stat_tests on AES-256-GCM, expecting success\n"); /* set buffer to cipher output */ for (i=0; i < 2500; i++) { buffer[i] = 0; } err_check(srtp_cipher_type_alloc(&srtp_aes_gcm_256_openssl, &c, SRTP_AES_256_GCM_KEYSIZE_WSALT, 16)); err_check(srtp_cipher_init(c, key)); err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); /* run tests on cipher outout */ printf("monobit %d\n", stat_test_monobit(buffer)); printf("poker %d\n", stat_test_poker(buffer)); printf("runs %d\n", stat_test_runs(buffer)); fflush(stdout); num_fail = 0; v128_set_to_zero(&nonce); for(j=0; j < num_trials; j++) { for (i=0; i < 2500; i++) { buffer[i] = 0; } nonce.v32[3] = i; err_check(srtp_cipher_set_iv(c, (uint8_t*)&nonce, srtp_direction_encrypt)); err_check(srtp_cipher_encrypt(c, buffer, &buf_len)); buf_len = 2500; if (stat_test_runs(buffer)) { num_fail++; } } } #endif printf("%d failures in %d tests\n", num_fail, num_trials); printf("(nota bene: a small fraction of stat_test failures does not \n" "indicate that the random source is invalid)\n"); err_check(srtp_cipher_dealloc(c)); return 0; } ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/�����������������������������������������������0000775�0000000�0000000�00000000000�13041410345�0020320�5����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/Doxyfile���������������������������������������0000664�0000000�0000000�00000120652�13041410345�0022034�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������# Doxyfile 1.3-rc3 # This file describes the settings to be used by the documentation system # doxygen (www.doxygen.org) for a project # # All text after a hash (#) is considered a comment and will be ignored # The format is: # TAG = value [value, ...] # For lists items can also be appended using: # TAG += value [value, ...] # Values that contain spaces should be placed between quotes (" ") #--------------------------------------------------------------------------- # General configuration options #--------------------------------------------------------------------------- # The PROJECT_NAME tag is a single word (or a sequence of words surrounded # by quotes) that should identify the project. PROJECT_NAME = libSRTP # The PROJECT_NUMBER tag can be used to enter a project or revision number. # This could be handy for archiving the generated documentation or # if some version control system is used. PROJECT_NUMBER = 1.3.22 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) # base path where the generated documentation will be put. # If a relative path is entered, it will be relative to the location # where doxygen was started. If left blank the current directory will be used. OUTPUT_DIRECTORY = # The OUTPUT_LANGUAGE tag is used to specify the language in which all # documentation generated by doxygen is written. Doxygen will use this # information to generate all constant output in the proper language. # The default language is English, other supported languages are: # Brazilian, Catalan, Chinese, Chinese-Traditional, Croatian, Czech, Danish, Dutch, # Finnish, French, German, Greek, Hungarian, Italian, Japanese, Japanese-en # (Japanese with english messages), Korean, Norwegian, Polish, Portuguese, # Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish and Ukrainian. OUTPUT_LANGUAGE = English # If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in # documentation are documented, even if no documentation was available. # Private class members and static file members will be hidden unless # the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES EXTRACT_ALL = NO # If the EXTRACT_PRIVATE tag is set to YES all private members of a class # will be included in the documentation. EXTRACT_PRIVATE = NO # If the EXTRACT_STATIC tag is set to YES all static members of a file # will be included in the documentation. EXTRACT_STATIC = NO # If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) # defined locally in source files will be included in the documentation. # If set to NO only classes defined in header files are included. EXTRACT_LOCAL_CLASSES = YES # If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all # undocumented members of documented classes, files or namespaces. # If set to NO (the default) these members will be included in the # various overviews, but no documentation section is generated. # This option has no effect if EXTRACT_ALL is enabled. HIDE_UNDOC_MEMBERS = YES # If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all # undocumented classes that are normally visible in the class hierarchy. # If set to NO (the default) these class will be included in the various # overviews. This option has no effect if EXTRACT_ALL is enabled. HIDE_UNDOC_CLASSES = NO # If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all # friend (class|struct|union) declarations. # If set to NO (the default) these declarations will be included in the # documentation. HIDE_FRIEND_COMPOUNDS = NO # If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any # documentation blocks found inside the body of a function. # If set to NO (the default) these blocks will be appended to the # function's detailed documentation block. HIDE_IN_BODY_DOCS = NO # If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will # include brief member descriptions after the members that are listed in # the file and class documentation (similar to JavaDoc). # Set to NO to disable this. BRIEF_MEMBER_DESC = YES # If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend # the brief description of a member or function before the detailed description. # Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the # brief descriptions will be completely suppressed. REPEAT_BRIEF = NO # If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then # Doxygen will generate a detailed section even if there is only a brief # description. ALWAYS_DETAILED_SEC = NO # If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show # all inherited members of a class in the documentation of that class # as if those members were ordinary class members. Constructors, # destructors and assignment operators of the base classes will not be # shown. INLINE_INHERITED_MEMB = NO # If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full # path before files name in the file list and in the header files. If set # to NO the shortest path that makes the file name unique will be used. FULL_PATH_NAMES = NO # If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag # can be used to strip a user defined part of the path. Stripping is # only done if one of the specified strings matches the left-hand part of # the path. It is allowed to use relative paths in the argument list. STRIP_FROM_PATH = # The INTERNAL_DOCS tag determines if documentation # that is typed after a \internal command is included. If the tag is set # to NO (the default) then the documentation will be excluded. # Set it to YES to include the internal documentation. INTERNAL_DOCS = NO # If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate # file names in lower case letters. If set to YES upper case letters are also # allowed. This is useful if you have classes or files whose names only differ # in case and if your file system supports case sensitive file names. Windows # users are adviced to set this option to NO. CASE_SENSE_NAMES = YES # If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter # (but less readable) file names. This can be useful is your file systems # doesn't support long names like on DOS, Mac, or CD-ROM. SHORT_NAMES = NO # If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen # will show members with their full class and namespace scopes in the # documentation. If set to YES the scope will be hidden. HIDE_SCOPE_NAMES = NO # If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen # will generate a verbatim copy of the header file for each class for # which an include is specified. Set to NO to disable this. VERBATIM_HEADERS = YES # If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen # will put list of the files that are included by a file in the documentation # of that file. SHOW_INCLUDE_FILES = NO # If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen # will interpret the first line (until the first dot) of a JavaDoc-style # comment as the brief description. If set to NO, the JavaDoc # comments will behave just like the Qt-style comments (thus requiring an # explict @brief command for a brief description. JAVADOC_AUTOBRIEF = NO # The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen # treat a multi-line C++ special comment block (i.e. a block of //! or /// # comments) as a brief description. This used to be the default behaviour. # The new default is to treat a multi-line C++ comment block as a detailed # description. Set this tag to YES if you prefer the old behaviour instead. MULTILINE_CPP_IS_BRIEF = NO # If the DETAILS_AT_TOP tag is set to YES then Doxygen # will output the detailed description near the top, like JavaDoc. # If set to NO, the detailed description appears after the member # documentation. DETAILS_AT_TOP = NO # If the INHERIT_DOCS tag is set to YES (the default) then an undocumented # member inherits the documentation from any documented member that it # reimplements. INHERIT_DOCS = YES # If the INLINE_INFO tag is set to YES (the default) then a tag [inline] # is inserted in the documentation for inline members. INLINE_INFO = YES # If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen # will sort the (detailed) documentation of file and class members # alphabetically by member name. If set to NO the members will appear in # declaration order. SORT_MEMBER_DOCS = YES # If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC # tag is set to YES, then doxygen will reuse the documentation of the first # member in the group (if any) for the other members of the group. By default # all members of a group must be documented explicitly. DISTRIBUTE_GROUP_DOC = NO # The TAB_SIZE tag can be used to set the number of spaces in a tab. # Doxygen uses this value to replace tabs by spaces in code fragments. TAB_SIZE = 3 # The GENERATE_TODOLIST tag can be used to enable (YES) or # disable (NO) the todo list. This list is created by putting \todo # commands in the documentation. GENERATE_TODOLIST = YES # The GENERATE_TESTLIST tag can be used to enable (YES) or # disable (NO) the test list. This list is created by putting \test # commands in the documentation. GENERATE_TESTLIST = YES # The GENERATE_BUGLIST tag can be used to enable (YES) or # disable (NO) the bug list. This list is created by putting \bug # commands in the documentation. GENERATE_BUGLIST = YES # The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or # disable (NO) the deprecated list. This list is created by putting # \deprecated commands in the documentation. GENERATE_DEPRECATEDLIST= YES # This tag can be used to specify a number of aliases that acts # as commands in the documentation. An alias has the form "name=value". # For example adding "sideeffect=\par Side Effects:\n" will allow you to # put the command \sideeffect (or @sideeffect) in the documentation, which # will result in a user defined paragraph with heading "Side Effects:". # You can put \n's in the value part of an alias to insert newlines. ALIASES = # The ENABLED_SECTIONS tag can be used to enable conditional # documentation sections, marked by \if sectionname ... \endif. ENABLED_SECTIONS = # The MAX_INITIALIZER_LINES tag determines the maximum number of lines # the initial value of a variable or define consist of for it to appear in # the documentation. If the initializer consists of more lines than specified # here it will be hidden. Use a value of 0 to hide initializers completely. # The appearance of the initializer of individual variables and defines in the # documentation can be controlled using \showinitializer or \hideinitializer # command in the documentation regardless of this setting. MAX_INITIALIZER_LINES = 30 # Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources # only. Doxygen will then generate output that is more tailored for C. # For instance some of the names that are used will be different. The list # of all members will be omitted, etc. OPTIMIZE_OUTPUT_FOR_C = YES # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java sources # only. Doxygen will then generate output that is more tailored for Java. # For instance namespaces will be presented as packages, qualified scopes # will look different, etc. OPTIMIZE_OUTPUT_JAVA = NO # Set the SHOW_USED_FILES tag to NO to disable the list of files generated # at the bottom of the documentation of classes and structs. If set to YES the # list will mention the files that were used to generate the documentation. SHOW_USED_FILES = YES #--------------------------------------------------------------------------- # configuration options related to warning and progress messages #--------------------------------------------------------------------------- # The QUIET tag can be used to turn on/off the messages that are generated # by doxygen. Possible values are YES and NO. If left blank NO is used. QUIET = NO # The WARNINGS tag can be used to turn on/off the warning messages that are # generated by doxygen. Possible values are YES and NO. If left blank # NO is used. WARNINGS = YES # If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings # for undocumented members. If EXTRACT_ALL is set to YES then this flag will # automatically be disabled. WARN_IF_UNDOCUMENTED = YES # If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for # potential errors in the documentation, such as not documenting some # parameters in a documented function, or documenting parameters that # don't exist or using markup commands wrongly. WARN_IF_DOC_ERROR = YES # The WARN_FORMAT tag determines the format of the warning messages that # doxygen can produce. The string should contain the $file, $line, and $text # tags, which will be replaced by the file and line number from which the # warning originated and the warning text. WARN_FORMAT = "$file:$line: $text" # The WARN_LOGFILE tag can be used to specify a file to which warning # and error messages should be written. If left blank the output is written # to stderr. WARN_LOGFILE = #--------------------------------------------------------------------------- # configuration options related to the input files #--------------------------------------------------------------------------- # The INPUT tag can be used to specify the files and/or directories that contain # documented source files. You may enter file names like "myfile.cpp" or # directories like "/usr/src/myproject". Separate the files or directories # with spaces. INPUT = intro.txt ../include/srtp.h ../crypto/include/crypto_types.h ../crypto/include/err.h ../crypto/include/crypto.h crypto_kernel.txt # If the value of the INPUT tag contains directories, you can use the # FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp # and *.h) to filter out the source-files in the directories. If left # blank the following patterns are tested: # *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx *.hpp # *.h++ *.idl *.odl FILE_PATTERNS = # The RECURSIVE tag can be used to turn specify whether or not subdirectories # should be searched for input files as well. Possible values are YES and NO. # If left blank NO is used. RECURSIVE = NO # The EXCLUDE tag can be used to specify files and/or directories that should # excluded from the INPUT source files. This way you can easily exclude a # subdirectory from a directory tree whose root is specified with the INPUT tag. EXCLUDE = # The EXCLUDE_SYMLINKS tag can be used select whether or not files or directories # that are symbolic links (a Unix filesystem feature) are excluded from the input. EXCLUDE_SYMLINKS = NO # If the value of the INPUT tag contains directories, you can use the # EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude # certain files from those directories. EXCLUDE_PATTERNS = # The EXAMPLE_PATH tag can be used to specify one or more files or # directories that contain example code fragments that are included (see # the \include command). EXAMPLE_PATH = # If the value of the EXAMPLE_PATH tag contains directories, you can use the # EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp # and *.h) to filter out the source-files in the directories. If left # blank all files are included. EXAMPLE_PATTERNS = # If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be # searched for input files to be used with the \include or \dontinclude # commands irrespective of the value of the RECURSIVE tag. # Possible values are YES and NO. If left blank NO is used. EXAMPLE_RECURSIVE = NO # The IMAGE_PATH tag can be used to specify one or more files or # directories that contain image that are included in the documentation (see # the \image command). IMAGE_PATH = # The INPUT_FILTER tag can be used to specify a program that doxygen should # invoke to filter for each input file. Doxygen will invoke the filter program # by executing (via popen()) the command <filter> <input-file>, where <filter> # is the value of the INPUT_FILTER tag, and <input-file> is the name of an # input file. Doxygen will then use the output that the filter program writes # to standard output. INPUT_FILTER = # If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using # INPUT_FILTER) will be used to filter the input files when producing source # files to browse (i.e. when SOURCE_BROWSER is set to YES). FILTER_SOURCE_FILES = NO #--------------------------------------------------------------------------- # configuration options related to source browsing #--------------------------------------------------------------------------- # If the SOURCE_BROWSER tag is set to YES then a list of source files will # be generated. Documented entities will be cross-referenced with these sources. SOURCE_BROWSER = NO # Setting the INLINE_SOURCES tag to YES will include the body # of functions and classes directly in the documentation. INLINE_SOURCES = NO # Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct # doxygen to hide any special comment blocks from generated source code # fragments. Normal C and C++ comments will always remain visible. STRIP_CODE_COMMENTS = YES # If the REFERENCED_BY_RELATION tag is set to YES (the default) # then for each documented function all documented # functions referencing it will be listed. REFERENCED_BY_RELATION = YES # If the REFERENCES_RELATION tag is set to YES (the default) # then for each documented function all documented entities # called/used by that function will be listed. REFERENCES_RELATION = YES #--------------------------------------------------------------------------- # configuration options related to the alphabetical class index #--------------------------------------------------------------------------- # If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index # of all compounds will be generated. Enable this if the project # contains a lot of classes, structs, unions or interfaces. ALPHABETICAL_INDEX = NO # If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then # the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns # in which this list will be split (can be a number in the range [1..20]) COLS_IN_ALPHA_INDEX = 5 # In case all classes in a project start with a common prefix, all # classes will be put under the same header in the alphabetical index. # The IGNORE_PREFIX tag can be used to specify one or more prefixes that # should be ignored while generating the index headers. IGNORE_PREFIX = #--------------------------------------------------------------------------- # configuration options related to the HTML output #--------------------------------------------------------------------------- # If the GENERATE_HTML tag is set to YES (the default) Doxygen will # generate HTML output. GENERATE_HTML = NO # The HTML_OUTPUT tag is used to specify where the HTML docs will be put. # If a relative path is entered the value of OUTPUT_DIRECTORY will be # put in front of it. If left blank `html' will be used as the default path. HTML_OUTPUT = html # The HTML_FILE_EXTENSION tag can be used to specify the file extension for # each generated HTML page (for example: .htm,.php,.asp). If it is left blank # doxygen will generate files with .html extension. HTML_FILE_EXTENSION = .html # The HTML_HEADER tag can be used to specify a personal HTML header for # each generated HTML page. If it is left blank doxygen will generate a # standard header. HTML_HEADER = # The HTML_FOOTER tag can be used to specify a personal HTML footer for # each generated HTML page. If it is left blank doxygen will generate a # standard footer. HTML_FOOTER = # The HTML_STYLESHEET tag can be used to specify a user defined cascading # style sheet that is used by each HTML page. It can be used to # fine-tune the look of the HTML output. If the tag is left blank doxygen # will generate a default style sheet HTML_STYLESHEET = # If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, # files or namespaces will be aligned in HTML using tables. If set to # NO a bullet list will be used. HTML_ALIGN_MEMBERS = YES # If the GENERATE_HTMLHELP tag is set to YES, additional index files # will be generated that can be used as input for tools like the # Microsoft HTML help workshop to generate a compressed HTML help file (.chm) # of the generated HTML documentation. GENERATE_HTMLHELP = NO # If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can # be used to specify the file name of the resulting .chm file. You # can add a path in front of the file if the result should not be # written to the html output dir. CHM_FILE = # If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can # be used to specify the location (absolute path including file name) of # the HTML help compiler (hhc.exe). If non empty doxygen will try to run # the html help compiler on the generated index.hhp. HHC_LOCATION = # If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag # controls if a separate .chi index file is generated (YES) or that # it should be included in the master .chm file (NO). GENERATE_CHI = NO # If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag # controls whether a binary table of contents is generated (YES) or a # normal table of contents (NO) in the .chm file. BINARY_TOC = NO # The TOC_EXPAND flag can be set to YES to add extra items for group members # to the contents of the Html help documentation and to the tree view. TOC_EXPAND = NO # The DISABLE_INDEX tag can be used to turn on/off the condensed index at # top of each HTML page. The value NO (the default) enables the index and # the value YES disables it. DISABLE_INDEX = NO # This tag can be used to set the number of enum values (range [1..20]) # that doxygen will group on one line in the generated HTML documentation. ENUM_VALUES_PER_LINE = 4 # If the GENERATE_TREEVIEW tag is set to YES, a side panel will be # generated containing a tree-like index structure (just like the one that # is generated for HTML Help). For this to work a browser that supports # JavaScript, DHTML, CSS and frames is required (for instance Mozilla, # Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are # probably better off using the HTML help feature. GENERATE_TREEVIEW = NO # If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be # used to set the initial width (in pixels) of the frame in which the tree # is shown. TREEVIEW_WIDTH = 250 #--------------------------------------------------------------------------- # configuration options related to the LaTeX output #--------------------------------------------------------------------------- # If the GENERATE_LATEX tag is set to YES (the default) Doxygen will # generate Latex output. GENERATE_LATEX = YES # The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. # If a relative path is entered the value of OUTPUT_DIRECTORY will be # put in front of it. If left blank `latex' will be used as the default path. LATEX_OUTPUT = latex # The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be # invoked. If left blank `latex' will be used as the default command name. LATEX_CMD_NAME = latex # The MAKEINDEX_CMD_NAME tag can be used to specify the command name to # generate index for LaTeX. If left blank `makeindex' will be used as the # default command name. MAKEINDEX_CMD_NAME = makeindex # If the COMPACT_LATEX tag is set to YES Doxygen generates more compact # LaTeX documents. This may be useful for small projects and may help to # save some trees in general. COMPACT_LATEX = NO # The PAPER_TYPE tag can be used to set the paper type that is used # by the printer. Possible values are: a4, a4wide, letter, legal and # executive. If left blank a4wide will be used. PAPER_TYPE = letter # The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX # packages that should be included in the LaTeX output. EXTRA_PACKAGES = # The LATEX_HEADER tag can be used to specify a personal LaTeX header for # the generated latex document. The header should contain everything until # the first chapter. If it is left blank doxygen will generate a # standard header. Notice: only use this tag if you know what you are doing! LATEX_HEADER = header.tex # If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated # is prepared for conversion to pdf (using ps2pdf). The pdf file will # contain links (just like the HTML output) instead of page references # This makes the output suitable for online browsing using a pdf viewer. PDF_HYPERLINKS = YES # If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of # plain latex in the generated Makefile. Set this option to YES to get a # higher quality PDF documentation. USE_PDFLATEX = YES # If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. # command to the generated LaTeX files. This will instruct LaTeX to keep # running if errors occur, instead of asking the user for help. # This option is also used when generating formulas in HTML. LATEX_BATCHMODE = NO #--------------------------------------------------------------------------- # configuration options related to the RTF output #--------------------------------------------------------------------------- # If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output # The RTF output is optimised for Word 97 and may not look very pretty with # other RTF readers or editors. GENERATE_RTF = NO # The RTF_OUTPUT tag is used to specify where the RTF docs will be put. # If a relative path is entered the value of OUTPUT_DIRECTORY will be # put in front of it. If left blank `rtf' will be used as the default path. RTF_OUTPUT = rtf # If the COMPACT_RTF tag is set to YES Doxygen generates more compact # RTF documents. This may be useful for small projects and may help to # save some trees in general. COMPACT_RTF = NO # If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated # will contain hyperlink fields. The RTF file will # contain links (just like the HTML output) instead of page references. # This makes the output suitable for online browsing using WORD or other # programs which support those fields. # Note: wordpad (write) and others do not support links. RTF_HYPERLINKS = NO # Load stylesheet definitions from file. Syntax is similar to doxygen's # config file, i.e. a series of assigments. You only have to provide # replacements, missing definitions are set to their default value. RTF_STYLESHEET_FILE = # Set optional variables used in the generation of an rtf document. # Syntax is similar to doxygen's config file. RTF_EXTENSIONS_FILE = #--------------------------------------------------------------------------- # configuration options related to the man page output #--------------------------------------------------------------------------- # If the GENERATE_MAN tag is set to YES (the default) Doxygen will # generate man pages GENERATE_MAN = NO # The MAN_OUTPUT tag is used to specify where the man pages will be put. # If a relative path is entered the value of OUTPUT_DIRECTORY will be # put in front of it. If left blank `man' will be used as the default path. MAN_OUTPUT = man # The MAN_EXTENSION tag determines the extension that is added to # the generated man pages (default is the subroutine's section .3) MAN_EXTENSION = .3 # If the MAN_LINKS tag is set to YES and Doxygen generates man output, # then it will generate one additional man file for each entity # documented in the real man page(s). These additional files # only source the real man page, but without them the man command # would be unable to find the correct page. The default is NO. MAN_LINKS = NO #--------------------------------------------------------------------------- # configuration options related to the XML output #--------------------------------------------------------------------------- # If the GENERATE_XML tag is set to YES Doxygen will # generate an XML file that captures the structure of # the code including all documentation. Note that this # feature is still experimental and incomplete at the # moment. GENERATE_XML = NO # The XML_SCHEMA tag can be used to specify an XML schema, # which can be used by a validating XML parser to check the # syntax of the XML files. XML_SCHEMA = # The XML_DTD tag can be used to specify an XML DTD, # which can be used by a validating XML parser to check the # syntax of the XML files. XML_DTD = #--------------------------------------------------------------------------- # configuration options for the AutoGen Definitions output #--------------------------------------------------------------------------- # If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will # generate an AutoGen Definitions (see autogen.sf.net) file # that captures the structure of the code including all # documentation. Note that this feature is still experimental # and incomplete at the moment. GENERATE_AUTOGEN_DEF = NO #--------------------------------------------------------------------------- # configuration options related to the Perl module output #--------------------------------------------------------------------------- # If the GENERATE_PERLMOD tag is set to YES Doxygen will # generate a Perl module file that captures the structure of # the code including all documentation. Note that this # feature is still experimental and incomplete at the # moment. GENERATE_PERLMOD = NO # If the PERLMOD_LATEX tag is set to YES Doxygen will generate # the necessary Makefile rules, Perl scripts and LaTeX code to be able # to generate PDF and DVI output from the Perl module output. PERLMOD_LATEX = NO # If the PERLMOD_PRETTY tag is set to YES the Perl module output will be # nicely formatted so it can be parsed by a human reader. This is useful # if you want to understand what is going on. On the other hand, if this # tag is set to NO the size of the Perl module output will be much smaller # and Perl will parse it just the same. PERLMOD_PRETTY = YES # The names of the make variables in the generated doxyrules.make file # are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. # This is useful so different doxyrules.make files included by the same # Makefile don't overwrite each other's variables. PERLMOD_MAKEVAR_PREFIX = #--------------------------------------------------------------------------- # Configuration options related to the preprocessor #--------------------------------------------------------------------------- # If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will # evaluate all C-preprocessor directives found in the sources and include # files. ENABLE_PREPROCESSING = YES # If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro # names in the source code. If set to NO (the default) only conditional # compilation will be performed. Macro expansion can be done in a controlled # way by setting EXPAND_ONLY_PREDEF to YES. MACRO_EXPANSION = NO # If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES # then the macro expansion is limited to the macros specified with the # PREDEFINED and EXPAND_AS_PREDEFINED tags. EXPAND_ONLY_PREDEF = NO # If the SEARCH_INCLUDES tag is set to YES (the default) the includes files # in the INCLUDE_PATH (see below) will be search if a #include is found. SEARCH_INCLUDES = YES # The INCLUDE_PATH tag can be used to specify one or more directories that # contain include files that are not input files but should be processed by # the preprocessor. INCLUDE_PATH = # You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard # patterns (like *.h and *.hpp) to filter out the header-files in the # directories. If left blank, the patterns specified with FILE_PATTERNS will # be used. INCLUDE_FILE_PATTERNS = # The PREDEFINED tag can be used to specify one or more macro names that # are defined before the preprocessor is started (similar to the -D option of # gcc). The argument of the tag is a list of macros of the form: name # or name=definition (no spaces). If the definition and the = are # omitted =1 is assumed. PREDEFINED = # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then # this tag can be used to specify a list of macro names that should be expanded. # The macro definition that is found in the sources will be used. # Use the PREDEFINED tag if you want to use a different macro definition. EXPAND_AS_DEFINED = # If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then # doxygen's preprocessor will remove all function-like macros that are alone # on a line, have an all uppercase name, and do not end with a semicolon. Such # function macros are typically used for boiler-plate code, and will confuse the # parser if not removed. SKIP_FUNCTION_MACROS = YES #--------------------------------------------------------------------------- # Configuration::addtions related to external references #--------------------------------------------------------------------------- # The TAGFILES tag can be used to specify one or more tagfiles. TAGFILES = # When a file name is specified after GENERATE_TAGFILE, doxygen will create # a tag file that is based on the input files it reads. GENERATE_TAGFILE = # If the ALLEXTERNALS tag is set to YES all external classes will be listed # in the class index. If set to NO only the inherited external classes # will be listed. ALLEXTERNALS = NO # If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed # in the modules index. If set to NO, only the current project's groups will # be listed. EXTERNAL_GROUPS = YES # The PERL_PATH should be the absolute path and name of the perl script # interpreter (i.e. the result of `which perl'). 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BIN_ABSPATH = /usr/local/bin/ # The EXT_DOC_PATHS tag can be used to specify one or more paths to # documentation generated for other projects. This allows doxysearch to search # the documentation for these projects as well. EXT_DOC_PATHS = ��������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/Makefile.in������������������������������������0000664�0000000�0000000�00000002230�13041410345�0022362�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������# Makefile for libSRTP documentation # # David A. McGrew # Cisco Systems, Inc. # # This makefile does not use the autoconf system; we don't really need # it. We just run doxygen then latex. If you don't have either of # these, then there is no way that you can make your own # documentation. Of course, you can just go online at pick up the # documentation from http://srtp.sourceforge.net. srcdir = @srcdir@ top_srcdir = @top_srcdir@ top_builddir = @top_builddir@ VPATH = @srcdir@ # Determine the version of the library version = $(shell cat $(top_srcdir)/VERSION) .PHONY: libsrtpdoc cryptodoc clean libsrtpdoc: @if test ! -e Doxyfile; then \ echo "*** Sorry, can't build doc outside source dir"; exit 1; \ fi sed 's/LIBSRTPVERSION/$(version)/' header.template > header.tex doxygen sed 's/\subsection/\section/' latex/index.tex > latex/index.tmp mv latex/index.tmp latex/index.tex cd latex; make cp latex/refman.pdf libsrtp.pdf cryptodoc: clean doxygen crypto.dox cd latex; make cp latex/refman.pdf crypto.pdf clean: rm -rf latex/ header.tex for a in * ; do \ if [ -f "$$a~" ] ; then rm -f $$a~; fi; \ done; ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/crypto_kernel.txt������������������������������0000664�0000000�0000000�00000003067�13041410345�0023747�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/** @defgroup CryptoKernel Cryptographic Kernel All of the cryptographic functions are contained in a kernel. */ /** @defgroup CipherImplementations Ciphers @ingroup CryptoKernel @brief A generic cipher type enables cipher agility, that is, the ability to write code that runs with multiple cipher types. Ciphers can be used through the crypto kernel, or can be accessed directly, if need be. @{ */ /** * @brief Allocates a cipher of a particular type. * @warning May be implemented as a macro. */ err_status_t cipher_type_alloc(cipher_type_t *ctype, cipher_t **cipher, unsigned key_len); /** * @brief Initialized a cipher to use a particular key. May * be invoked more than once on the same cipher. * @warning May be implemented as a macro. */ err_status_t cipher_init(cipher_t *cipher, const uint8_t *key); /** * @brief Sets the initialization vector of a given cipher. * @warning May be implemented as a macro. */ err_status_t cipher_set_iv(cipher_t *cipher, void *iv); /** * @brief Encrypts a buffer with a given cipher. * @warning May be implemented as a macro. */ err_status_t cipher_encrypt(cipher_t *cipher, void *buf, unsigned int *len); /** * @brief Sets a buffer to the keystream generated by the cipher. * @warning May be implemented as a macro. */ err_status_t cipher_output(cipher_t *c, uint8_t *buffer, int num_octets_to_output); /** * @brief Deallocates a cipher. * @warning May be implemented as a macro. */ err_status_t cipher_dealloc(cipher_t *cipher); /** * @} */ */�������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/header.template��������������������������������0000664�0000000�0000000�00000005530�13041410345�0023310�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������% header.tex % % header file for the libSRTP documentation - based on the header % file generated by doxygen, with the initial chapters of the % original libSRTP documentation tacked on % \documentclass[letterpaper]{book} \usepackage{makeidx} \usepackage{fancyhdr} \usepackage{graphicx} \usepackage{multicol} \usepackage{float} \usepackage{textcomp} \usepackage{alltt} \usepackage{times} \usepackage{graphicx} \ifx\pdfoutput\undefined \usepackage[ps2pdf, pagebackref=true, colorlinks=true, linkcolor=blue ]{hyperref} \else \usepackage[pdftex, pagebackref=true, colorlinks=true, linkcolor=blue ]{hyperref} \fi \usepackage{doxygen} \makeindex \setcounter{tocdepth}{1} \renewcommand{\footrulewidth}{0.4pt} % these lengths are from DAM \textwidth = 6.5 in %\textheight = 9 in \oddsidemargin = 0.0 in \evensidemargin = 0.0 in \topmargin = 0.0 in \headheight = 0.0 in %\headsep = 0.0 in \parskip = 0.2in \parindent = 0.0in % these header and footer definitions from DAM \lhead{libSRTP} \chead{} \rhead{\rightmark} %\rhead{\slshape } \lfoot{} \cfoot{ \thepage } \rfoot{} %\fancyhead[LE,RO]{\rightmark } %\fancyhead[LO,RE]{\slshape } % let's use the palatino font \fontfamily{ppl} \selectfont \begin{document} \begin{titlepage} \vspace*{4cm} %\begin{center} {\Huge libSRTP LIBSRTPVERSION Overview and Reference Manual\\ \hrulefill }\\ \vspace*{0cm} \begin{flushright} {\Large David A. McGrew \\ \texttt{mcgrew@cisco.com} }\\ \vspace*{0.5cm} \end{flushright} %\end{center} %\includegraphics[scale=.8]{phone} \end{titlepage} \clearemptydoublepage \vspace*{3cm} {\LARGE Preface} \vspace{1cm} The original implementation and documentation of libSRTP was written by David McGrew of Cisco Systems, Inc. in order to promote the use, understanding, and interoperability of Secure RTP. Michael Jerris contributed support for building under MSVC. Andris Pavenis contributed many important fixes. Brian West contributed changes to enable dynamic linking. Yves Shumann reported documentation bugs. Randell Jesup contributed a working SRTCP implementation and other fixes. Alex Vanzella and Will Clark contributed changes so that the AES ICM implementation can be used for ISMA media encryption. Steve Underwood contributed x86\_64 portability changes. We also give thanks to Fredrik Thulin, Brian Weis, Mark Baugher, Jeff Chan, Bill Simon, Douglas Smith, Bill May, Richard Preistley, Joe Tardo and others for contributions, comments, and corrections. This reference material in this documenation was generated using the \texttt{doxygen} utility for automatic documentation of source code. \copyright 2001-2005 by David A. McGrew, Cisco Systems, Inc. \thispagestyle{empty} \clearemptydoublepage \pagenumbering{roman} \tableofcontents %\clearemptydoublepage \clearemptydoublepage \pagenumbering{arabic} ������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/intro.txt��������������������������������������0000664�0000000�0000000�00000041145�13041410345�0022221�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/** @mainpage Introduction to libSRTP This document describes libSRTP, the Open Source Secure RTP library from Cisco Systems, Inc. RTP is the Real-time Transport Protocol, an IETF standard for the transport of real-time data such as telephony, audio, and video, defined by RFC 3550. Secure RTP (SRTP) is an RTP profile for providing confidentiality to RTP data and authentication to the RTP header and payload. SRTP is an IETF Proposed Standard, defined in RFC 3711, and was developed in the IETF Audio/Video Transport (AVT) Working Group. This library supports all of the mandatory features of SRTP, but not all of the optional features. See the @ref Features section for more detailed information. This document is organized as follows. The first chapter provides background material on SRTP and overview of libSRTP. The following chapters provide a detailed reference to the libSRTP API and related functions. The reference material is created automatically (using the doxygen utility) from comments embedded in some of the C header files. The documentation is organized into modules in order to improve its clarity. These modules do not directly correspond to files. An underlying cryptographic kernel provides much of the basic functionality of libSRTP, but is mostly undocumented because it does its work behind the scenes. @section LICENSE License and Disclaimer libSRTP is distributed under the following license, which is included in the source code distribution. It is reproduced in the manual in case you got the library from another source. @latexonly \begin{quote} Copyright (c) 2001-2005 Cisco Systems, Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: \begin{itemize} \item Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. \item Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. \item Neither the name of the Cisco Systems, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. \end{itemize} THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. \end{quote} @endlatexonly @section Features Supported Features This library supports all of the mandatory-to-implement features of SRTP (as defined by the most recent Internet Draft). Some of these features can be selected (or de-selected) at run time by setting an appropriate policy; this is done using the structure srtp_policy_t. Some other behaviors of the protocol can be adapted by defining an approriate event handler for the exceptional events; see the @ref SRTPevents section. Some options that are not included in the specification are supported. Most notably, the TMMH authentication function is included, though it was removed from the SRTP Internet Draft during the summer of 2002. @latexonly Some options that are described in the SRTP specification are not supported. This includes \begin{itemize} \item the Master Key Index (MKI), \item key derivation rates other than zero, \item the cipher F8, \item anti-replay lists with sizes other than 128, \item the use of the packet index to select between master keys. \end{itemize} @endlatexonly The user should be aware that it is possible to misuse this libary, and that the result may be that the security level it provides is inadequate. If you are implementing a feature using this library, you will want to read the Security Considerations section of the Internet Draft. In addition, it is important that you read and understand the terms outlined in the @ref LICENSE section. @section Installing Installing and Building libSRTP @latexonly To install libSRTP, download the latest release of the distribution from \texttt{srtp.sourceforge.net}. The format of the names of the distributions are \texttt{srtp-A.B.C.tgz}, where \texttt{A} is the version number, \texttt{B} is the major release number, \texttt{C} is the minor release number, and \texttt{tgz} is the file extension\footnote{The extension \texttt{.tgz} is identical to \texttt{tar.gz}, and indicates a compressed tar file.} You probably want to get the most recent release. Unpack the distribution and extract the source files; the directory into which the source files will go is named \texttt{srtp}. libSRTP uses the GNU \texttt{autoconf} and \texttt{make} utilities\footnote{BSD make will not work; if both versions of make are on your platform, you can invoke GNU make as \texttt{gmake}.}. In the \texttt{srtp} directory, run the configure script and then make: \begin{verbatim} ./configure [ options ] make \end{verbatim} The configure script accepts the following options: \begin{quote} \begin{description} \item[--help] provides a usage summary. \item[--disable-debug] compiles libSRTP without the runtime dynamic debugging system. \item[--enable-generic-aesicm] compile in changes for ismacryp \item[--enable-syslog] use syslog for error reporting. \item[--disable-stdout] diables stdout for error reporting. \item[--enable-console] use \texttt{/dev/console} for error reporting \item[--gdoi] use GDOI key management (disabled at present). \end{description} \end{quote} By default, dynamic debugging is enabled and stdout is used for debugging. You can use the configure options to have the debugging output sent to syslog or the system console. Alternatively, you can define ERR\_REPORTING\_FILE in \texttt{include/conf.h} to be any other file that can be opened by libSRTP, and debug messages will be sent to it. This package has been tested on the following platforms: Mac OS X (powerpc-apple-darwin1.4), Cygwin (i686-pc-cygwin), Solaris (sparc-sun-solaris2.6), RedHat Linux 7.1 and 9 (i686-pc-linux), and OpenBSD (sparc-unknown-openbsd2.7). @endlatexonly @section Applications Applications @latexonly Several test drivers and a simple and portable srtp application are included in the \texttt{test/} subdirectory. \begin{center} \begin{tabular}{ll} \hline Test driver & Function tested \\ \hline kernel\_driver & crypto kernel (ciphers, auth funcs, rng) \\ srtp\_driver & srtp in-memory tests (does not use the network) \\ rdbx\_driver & rdbx (extended replay database) \\ roc\_driver & extended sequence number functions \\ replay\_driver & replay database \\ cipher\_driver & ciphers \\ auth\_driver & hash functions \\ \hline \end{tabular} \end{center} The app rtpw is a simple rtp application which reads words from /usr/dict/words and then sends them out one at a time using [s]rtp. Manual srtp keying uses the -k option; automated key management using gdoi will be added later. The usage for rtpw is \texttt{rtpw [[-d $<$debug$>$]* [-k $<$key$>$ [-a][-e]] [-s | -r] dest\_ip dest\_port] | [-l]} Either the -s (sender) or -r (receiver) option must be chosen. The values dest\_ip, dest\_port are the IP address and UDP port to which the dictionary will be sent, respectively. The options are: \begin{center} \begin{tabular}{ll} -s & (S)RTP sender - causes app to send words \\ -r & (S)RTP receive - causes app to receive words \\ -k $<$key$>$ & use SRTP master key $<$key$>$, where the key is a hexadecimal value (without the leading "0x") \\ -e & encrypt/decrypt (for data confidentiality) (requires use of -k option as well)\\ -a & message authentication (requires use of -k option as well) \\ -l & list the available debug modules \\ -d $<$debug$>$ & turn on debugging for module $<$debug$>$ \\ \end{tabular} \end{center} In order to get a random 30-byte value for use as a key/salt pair, you can use the \texttt{rand\_gen} utility in the \texttt{test/} subdirectory. An example of an SRTP session using two rtpw programs follows: \begin{verbatim} [sh1] set k=`test/rand_gen -n 30` [sh1] echo $k c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451 [sh1]$ test/rtpw -s -k $k -ea 0.0.0.0 9999 Security services: confidentiality message authentication set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451 setting SSRC to 2078917053 sending word: A sending word: a sending word: aa sending word: aal sending word: aalii sending word: aam sending word: Aani sending word: aardvark ... [sh2] set k=c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451 [sh2]$ test/rtpw -r -k $k -ea 0.0.0.0 9999 security services: confidentiality message authentication set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451 19 octets received from SSRC 2078917053 word: A 19 octets received from SSRC 2078917053 word: a 20 octets received from SSRC 2078917053 word: aa 21 octets received from SSRC 2078917053 word: aal ... \end{verbatim} @endlatexonly @section Review Secure RTP Background In this section we review SRTP and introduce some terms that are used in libSRTP. An RTP session is defined by a pair of destination transport addresses, that is, a network address plus a pair of UDP ports for RTP and RTCP. RTCP, the RTP control protocol, is used to coordinate between the participants in an RTP session, e.g. to provide feedback from receivers to senders. An @e SRTP @e session is similarly defined; it is just an RTP session for which the SRTP profile is being used. An SRTP session consists of the traffic sent to the SRTP or SRTCP destination transport addresses. Each participant in a session is identified by a synchronization source (SSRC) identifier. Some participants may not send any SRTP traffic; they are called receivers, even though they send out SRTCP traffic, such as receiver reports. RTP allows multiple sources to send RTP and RTCP traffic during the same session. The synchronization source identifier (SSRC) is used to distinguish these sources. In libSRTP, we call the SRTP and SRTCP traffic from a particular source a @e stream. Each stream has its own SSRC, sequence number, rollover counter, and other data. A particular choice of options, cryptographic mechanisms, and keys is called a @e policy. Each stream within a session can have a distinct policy applied to it. A session policy is a collection of stream policies. A single policy can be used for all of the streams in a given session, though the case in which a single @e key is shared across multiple streams requires care. When key sharing is used, the SSRC values that identify the streams @b must be distinct. This requirement can be enforced by using the convention that each SRTP and SRTCP key is used for encryption by only a single sender. In other words, the key is shared only across streams that originate from a particular device (of course, other SRTP participants will need to use the key for decryption). libSRTP supports this enforcement by detecting the case in which a key is used for both inbound and outbound data. @section Overview libSRTP Overview libSRTP provides functions for protecting RTP and RTCP. RTP packets can be encrypted and authenticated (using the srtp_protect() function), turning them into SRTP packets. Similarly, SRTP packets can be decrypted and have their authentication verified (using the srtp_unprotect() function), turning them into RTP packets. Similar functions apply security to RTCP packets. The typedef srtp_stream_t points to a structure holding all of the state associated with an SRTP stream, including the keys and parameters for cipher and message authentication functions and the anti-replay data. A particular srtp_stream_t holds the information needed to protect a particular RTP and RTCP stream. This datatype is intentionally opaque in order to better seperate the libSRTP API from its implementation. Within an SRTP session, there can be multiple streams, each originating from a particular sender. Each source uses a distinct stream context to protect the RTP and RTCP stream that it is originating. The typedef srtp_t points to a structure holding all of the state associated with an SRTP session. There can be multiple stream contexts associated with a single srtp_t. A stream context cannot exist indepent from an srtp_t, though of course an srtp_t can be created that contains only a single stream context. A device participating in an SRTP session must have a stream context for each source in that session, so that it can process the data that it receives from each sender. In libSRTP, a session is created using the function srtp_create(). The policy to be implemented in the session is passed into this function as an srtp_policy_t structure. A single one of these structures describes the policy of a single stream. These structures can also be linked together to form an entire session policy. A linked list of srtp_policy_t structures is equivalent to a session policy. In such a policy, we refer to a single srtp_policy_t as an @e element. An srtp_policy_t strucutre contains two crypto_policy_t structures that describe the cryptograhic policies for RTP and RTCP, as well as the SRTP master key and the SSRC value. The SSRC describes what to protect (e.g. which stream), and the crypto_policy_t structures describe how to protect it. The key is contained in a policy element because it simplifies the interface to the library. In many cases, it is desirable to use the same cryptographic policies across all of the streams in a session, but to use a distinct key for each stream. A crypto_policy_t structure can be initialized by using either the crypto_policy_set_rtp_default() or crypto_policy_set_rtcp_default() functions, which set a crypto policy structure to the default policies for RTP and RTCP protection, respectively. @section Example Example Code This section provides a simple example of how to use libSRTP. The example code lacks error checking, but is functional. Here we assume that the value ssrc is already set to describe the SSRC of the stream that we are sending, and that the functions get_rtp_packet() and send_srtp_packet() are available to us. The former puts an RTP packet into the buffer and returns the number of octets written to that buffer. The latter sends the RTP packet in the buffer, given the length as its second argument. @verbatim srtp_t session; srtp_policy_t policy; uint8_t key[30]; // initialize libSRTP srtp_init(); // set policy to describe a policy for an SRTP stream crypto_policy_set_rtp_default(&policy.rtp); crypto_policy_set_rtcp_default(&policy.rtcp); policy.ssrc = ssrc; policy.key = key; policy.next = NULL; // set key to random value crypto_get_random(key, 30); // allocate and initialize the SRTP session srtp_create(&session, &policy); // main loop: get rtp packets, send srtp packets while (1) { char rtp_buffer[2048]; unsigned len; len = get_rtp_packet(rtp_buffer); srtp_protect(session, rtp_buffer, &len); send_srtp_packet(rtp_buffer, len); } @endverbatim @section ISMAcryp ISMA Encryption Support The Internet Streaming Media Alliance (ISMA) specifies a way to pre-encrypt a media file prior to streaming. This method is an alternative to SRTP encryption, which is potentially useful when a particular media file will be streamed multiple times. The specification is available online at http://www.isma.tv/specreq.nsf/SpecRequest. libSRTP provides the encryption and decryption functions needed for ISMAcryp in the library @t libaesicm.a, which is included in the default Makefile target. This library is used by the MPEG4IP project; see http://mpeg4ip.sourceforge.net/. Note that ISMAcryp does not provide authentication for RTP nor RTCP, nor confidentiality for RTCP. ISMAcryp RECOMMENDS the use of SRTP message authentication for ISMAcryp streams while using ISMAcryp encryption to protect the media itself. */ ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/doc/references.txt���������������������������������0000664�0000000�0000000�00000001353�13041410345�0023204�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������SRTP and ICM References September, 2005 This document provides references for the various cryptographic functions used in libSRTP and libaesicm. Secure RTP is defined in RFC 3711, which is included in this distribution for convenience. The counter mode definition is in Section 4.1.1 of the SRTP draft. SHA-1 is defined in FIPS-180-1, available online at the NIST website. HMAC is defined in RFC2104, and HMAC-SHA1 test vectors are available in RFC2202, which are available online at http://www.ietf.org/rfc/ ICM is defined by draft-irtf-cfrg-icm-00.txt, and its application in ISMAcryp (the Internet Streaming Media Alliance 1.0 Encryption and Authentication) is defined in that specification. It is available from http://www.isma.tv/. �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/�������������������������������������������0000775�0000000�0000000�00000000000�13041410345�0021176�5����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/ekt.h��������������������������������������0000664�0000000�0000000�00000012505�13041410345�0022135�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * ekt.h * * interface to Encrypted Key Transport for SRTP * * David McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2005 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* * EKT implementation strategy * * use stream_template approach * * in srtp_unprotect, when a new stream appears, check if template has * EKT defined, and if it does, then apply EKT processing * * question: will we want to allow key-sharing templates in addition * to EKT templates? could define a new ssrc_type_t that's associated * with an EKT, e.g. ssrc_any_ekt. * * */ #ifndef EKT_H #define EKT_H #include "srtp_priv.h" #ifdef __cplusplus extern "C" { #endif #define SRTP_EKT_CIPHER_DEFAULT 1 #define SRTP_EKT_CIPHER_AES_128_ECB 1 #define SRTP_EKT_CIPHER_AES_192_KEY_WRAP 2 #define SRTP_EKT_CIPHER_AES_256_KEY_WRAP 3 typedef uint16_t srtp_ekt_spi_t; unsigned srtp_ekt_octets_after_base_tag(srtp_ekt_stream_t ekt); /* * an srtp_policy_t structure can contain a pointer to an * srtp_ekt_policy_t structure * * this structure holds all of the high level EKT information, and it * is passed into libsrtp to indicate what policy should be in effect */ typedef struct srtp_ekt_policy_ctx_t { srtp_ekt_spi_t spi; /* security parameter index */ uint8_t ekt_cipher_type; uint8_t *ekt_key; struct srtp_ekt_policy_ctx_t *next_ekt_policy; } srtp_ekt_policy_ctx_t; /* * an srtp_ekt_data_t structure holds the data corresponding to an ekt key, * spi, and so on */ typedef struct srtp_ekt_data_t { srtp_ekt_spi_t spi; uint8_t ekt_cipher_type; srtp_aes_expanded_key_t ekt_enc_key; srtp_aes_expanded_key_t ekt_dec_key; struct ekt_data_t *next_ekt_data; } srtp_ekt_data_t; /* * an srtp_stream_ctx_t can contain an srtp_ekt_stream_ctx_t * * an srtp_ekt_stream_ctx_t structure holds all of the EKT information for * a specific SRTP stream */ typedef struct srtp_ekt_stream_ctx_t { srtp_ekt_data_t *data; uint16_t isn; /* initial sequence number */ uint8_t encrypted_master_key[SRTP_MAX_KEY_LEN]; } srtp_ekt_stream_ctx_t; srtp_err_status_t srtp_ekt_alloc(srtp_ekt_stream_t *stream_data, srtp_ekt_policy_t policy); srtp_err_status_t srtp_ekt_stream_init(srtp_ekt_stream_t e, srtp_ekt_spi_t spi, void *ekt_key, unsigned ekt_cipher_type); srtp_err_status_t srtp_ekt_stream_init_from_policy(srtp_ekt_stream_t e, srtp_ekt_policy_t p); srtp_err_status_t srtp_stream_init_from_ekt(srtp_stream_t stream, const void *srtcp_hdr, unsigned pkt_octet_len); void srtp_ekt_write_data(srtp_ekt_stream_t ekt, uint8_t *base_tag, unsigned base_tag_len, int *packet_len, srtp_xtd_seq_num_t pkt_index); /* * We handle EKT by performing some additional steps before * authentication (copying the auth tag into a temporary location, * zeroizing the "base tag" field in the packet) * * With EKT, the tag_len parameter is actually the base tag * length */ srtp_err_status_t srtp_ekt_tag_verification_preproces(uint8_t *pkt_tag, uint8_t *pkt_tag_copy, unsigned tag_len); srtp_err_status_t srtp_ekt_tag_verification_postproces(uint8_t *pkt_tag, uint8_t *pkt_tag_copy, unsigned tag_len); /* * @brief EKT pre-processing for srtcp tag generation * * This function does the pre-processing of the SRTCP authentication * tag format. When EKT is used, it consists of writing the Encrypted * Master Key, the SRTP ROC, the Initial Sequence Number, and SPI * fields. The Base Authentication Tag field is set to the all-zero * value * * When EKT is not used, this function is a no-op. * */ srtp_err_status_t srtp_stream_srtcp_auth_tag_generation_preprocess(const srtp_stream_t *s, uint8_t *pkt_tag, unsigned pkt_octet_len); /* it's not clear that a tag_generation_postprocess function is needed */ srtp_err_status_t srtcp_auth_tag_generation_postprocess(void); #ifdef __cplusplus } #endif #endif /* EKT_H */ �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/getopt_s.h���������������������������������0000664�0000000�0000000�00000004275�13041410345�0023203�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * getopt.h * * interface to a minimal implementation of the getopt() function, * written so that test applications that use that function can run on * non-POSIX platforms * */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef GETOPT_S_H #define GETOPT_S_H #ifdef __cplusplus extern "C" { #endif /* * getopt_s(), optarg_s, and optind_s are small, locally defined * versions of the POSIX standard getopt() interface. */ int getopt_s(int argc, char * const argv[], const char *optstring); extern char *optarg_s; /* defined in getopt.c */ extern int optind_s; /* defined in getopt.c */ #ifdef __cplusplus } #endif #endif /* GETOPT_S_H */ �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/rtp.h��������������������������������������0000664�0000000�0000000�00000010453�13041410345�0022157�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rtp.h * * rtp interface for srtp reference implementation * * David A. McGrew * Cisco Systems, Inc. * * data types: * * rtp_msg_t an rtp message (the data that goes on the wire) * rtp_sender_t sender side socket and rtp info * rtp_receiver_t receiver side socket and rtp info * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef RTP_H #define RTP_H #ifdef HAVE_NETINET_IN_H # include <netinet/in.h> #elif defined HAVE_WINSOCK2_H # include <winsock2.h> #endif //#include "srtp_priv.h" #include "srtp.h" #ifdef __cplusplus extern "C" { #endif /* * RTP_HEADER_LEN indicates the size of an RTP header */ #define RTP_HEADER_LEN 12 /* * RTP_MAX_BUF_LEN defines the largest RTP packet in the rtp.c implementation */ #define RTP_MAX_BUF_LEN 16384 typedef srtp_hdr_t rtp_hdr_t; typedef struct { srtp_hdr_t header; char body[RTP_MAX_BUF_LEN]; } rtp_msg_t; typedef struct rtp_sender_ctx_t { rtp_msg_t message; int socket; srtp_ctx_t *srtp_ctx; struct sockaddr_in addr; /* reciever's address */ } rtp_sender_ctx_t; typedef struct rtp_receiver_ctx_t { rtp_msg_t message; int socket; srtp_ctx_t *srtp_ctx; struct sockaddr_in addr; /* receiver's address */ } rtp_receiver_ctx_t; typedef struct rtp_sender_ctx_t *rtp_sender_t; typedef struct rtp_receiver_ctx_t *rtp_receiver_t; int rtp_sendto(rtp_sender_t sender, const void* msg, int len); int rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len); int rtp_receiver_init(rtp_receiver_t rcvr, int sock, struct sockaddr_in addr, unsigned int ssrc); int rtp_sender_init(rtp_sender_t sender, int sock, struct sockaddr_in addr, unsigned int ssrc); /* * srtp_sender_init(...) initializes an rtp_sender_t */ int srtp_sender_init(rtp_sender_t rtp_ctx, /* structure to be init'ed */ struct sockaddr_in name, /* socket name */ srtp_sec_serv_t security_services, /* sec. servs. to be used */ unsigned char *input_key /* master key/salt in hex */ ); int srtp_receiver_init(rtp_receiver_t rtp_ctx, /* structure to be init'ed */ struct sockaddr_in name, /* socket name */ srtp_sec_serv_t security_services, /* sec. servs. to be used */ unsigned char *input_key /* master key/salt in hex */ ); int rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy); int rtp_sender_deinit_srtp(rtp_sender_t sender); int rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy); int rtp_receiver_deinit_srtp(rtp_receiver_t sender); rtp_sender_t rtp_sender_alloc(void); void rtp_sender_dealloc(rtp_sender_t rtp_ctx); rtp_receiver_t rtp_receiver_alloc(void); void rtp_receiver_dealloc(rtp_receiver_t rtp_ctx); #ifdef __cplusplus } #endif #endif /* RTP_H */ ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/rtp_priv.h���������������������������������0000664�0000000�0000000�00000003447�13041410345�0023224�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rtp_priv.h * * private, internal header file for RTP * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef RTP_PRIV_H #define RTP_PRIV_H #include "srtp_priv.h" #include "rtp.h" #endif /* RTP_PRIV_H */ �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/srtp.h�������������������������������������0000664�0000000�0000000�00000154042�13041410345�0022345�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * srtp.h * * interface to libsrtp * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef SRTP_H #define SRTP_H #include <stdint.h> #ifdef __cplusplus extern "C" { #endif /** * @defgroup SRTP Secure RTP * * @brief libSRTP provides functions for protecting RTP and RTCP. See * Section @ref Overview for an introduction to the use of the library. * * @{ */ /* * SRTP_MASTER_KEY_LEN is the nominal master key length supported by libSRTP */ #define SRTP_MASTER_KEY_LEN 30 /* * SRTP_MAX_KEY_LEN is the maximum key length supported by libSRTP */ #define SRTP_MAX_KEY_LEN 64 /* * SRTP_MAX_TAG_LEN is the maximum tag length supported by libSRTP */ #define SRTP_MAX_TAG_LEN 16 /** * SRTP_MAX_TRAILER_LEN is the maximum length of the SRTP trailer * (authentication tag and MKI) supported by libSRTP. This value is * the maximum number of octets that will be added to an RTP packet by * srtp_protect(). * * @brief the maximum number of octets added by srtp_protect(). */ #define SRTP_MAX_TRAILER_LEN SRTP_MAX_TAG_LEN /* * SRTP_AEAD_SALT_LEN is the length of the SALT values used with * GCM mode. GCM mode requires an IV. The SALT value is used * as part of the IV formation logic applied to each RTP packet. */ #define SRTP_AEAD_SALT_LEN 12 #define SRTP_AES_128_GCM_KEYSIZE_WSALT SRTP_AEAD_SALT_LEN + 16 #define SRTP_AES_192_GCM_KEYSIZE_WSALT SRTP_AEAD_SALT_LEN + 24 #define SRTP_AES_256_GCM_KEYSIZE_WSALT SRTP_AEAD_SALT_LEN + 32 /* * an srtp_hdr_t represents the srtp header * * in this implementation, an srtp_hdr_t is assumed to be 32-bit aligned * * (note that this definition follows that of RFC 1889 Appendix A, but * is not identical) */ #ifndef WORDS_BIGENDIAN /* * srtp_hdr_t represents an RTP or SRTP header. The bit-fields in * this structure should be declared "unsigned int" instead of * "unsigned char", but doing so causes the MS compiler to not * fully pack the bit fields. */ typedef struct { unsigned char cc:4; /* CSRC count */ unsigned char x:1; /* header extension flag */ unsigned char p:1; /* padding flag */ unsigned char version:2; /* protocol version */ unsigned char pt:7; /* payload type */ unsigned char m:1; /* marker bit */ uint16_t seq; /* sequence number */ uint32_t ts; /* timestamp */ uint32_t ssrc; /* synchronization source */ } srtp_hdr_t; #else /* BIG_ENDIAN */ typedef struct { unsigned char version:2; /* protocol version */ unsigned char p:1; /* padding flag */ unsigned char x:1; /* header extension flag */ unsigned char cc:4; /* CSRC count */ unsigned char m:1; /* marker bit */ unsigned char pt:7; /* payload type */ uint16_t seq; /* sequence number */ uint32_t ts; /* timestamp */ uint32_t ssrc; /* synchronization source */ } srtp_hdr_t; #endif typedef struct { uint16_t profile_specific; /* profile-specific info */ uint16_t length; /* number of 32-bit words in extension */ } srtp_hdr_xtnd_t; /* * srtcp_hdr_t represents a secure rtcp header * * in this implementation, an srtcp header is assumed to be 32-bit * alinged */ #ifndef WORDS_BIGENDIAN typedef struct { unsigned char rc:5; /* reception report count */ unsigned char p:1; /* padding flag */ unsigned char version:2; /* protocol version */ unsigned char pt:8; /* payload type */ uint16_t len; /* length */ uint32_t ssrc; /* synchronization source */ } srtcp_hdr_t; typedef struct { unsigned int index:31; /* srtcp packet index in network order! */ unsigned int e:1; /* encrypted? 1=yes */ /* optional mikey/etc go here */ /* and then the variable-length auth tag */ } srtcp_trailer_t; #else /* BIG_ENDIAN */ typedef struct { unsigned char version:2; /* protocol version */ unsigned char p:1; /* padding flag */ unsigned char rc:5; /* reception report count */ unsigned char pt:8; /* payload type */ uint16_t len; /* length */ uint32_t ssrc; /* synchronization source */ } srtcp_hdr_t; typedef struct { unsigned int version:2; /* protocol version */ unsigned int p:1; /* padding flag */ unsigned int count:5; /* varies by packet type */ unsigned int pt:8; /* payload type */ uint16_t length; /* len of uint32s of packet less header */ } rtcp_common_t; typedef struct { unsigned int e:1; /* encrypted? 1=yes */ unsigned int index:31; /* srtcp packet index */ /* optional mikey/etc go here */ /* and then the variable-length auth tag */ } srtcp_trailer_t; #endif /** * @brief A srtp_cipher_type_id_t is an identifier for a particular cipher * type. * * A srtp_cipher_type_id_t is an integer that represents a particular * cipher type, e.g. the Advanced Encryption Standard (AES). A * SRTP_NULL_CIPHER is avaliable; this cipher leaves the data unchanged, * and can be selected to indicate that no encryption is to take * place. * * @ingroup Ciphers */ typedef uint32_t srtp_cipher_type_id_t; /** * @brief An srtp_auth_type_id_t is an identifier for a particular authentication * function. * * An srtp_auth_type_id_t is an integer that represents a particular * authentication function type, e.g. HMAC-SHA1. A SRTP_NULL_AUTH is * avaliable; this authentication function performs no computation, * and can be selected to indicate that no authentication is to take * place. * * @ingroup Authentication */ typedef uint32_t srtp_auth_type_id_t; /* * @brief srtp_err_status_t defines error codes. * * The enumeration srtp_err_status_t defines error codes. Note that the * value of srtp_err_status_ok is equal to zero, which can simplify error * checking somewhat. * */ typedef enum { srtp_err_status_ok = 0, /**< nothing to report */ srtp_err_status_fail = 1, /**< unspecified failure */ srtp_err_status_bad_param = 2, /**< unsupported parameter */ srtp_err_status_alloc_fail = 3, /**< couldn't allocate memory */ srtp_err_status_dealloc_fail = 4, /**< couldn't deallocate properly */ srtp_err_status_init_fail = 5, /**< couldn't initialize */ srtp_err_status_terminus = 6, /**< can't process as much data as requested */ srtp_err_status_auth_fail = 7, /**< authentication failure */ srtp_err_status_cipher_fail = 8, /**< cipher failure */ srtp_err_status_replay_fail = 9, /**< replay check failed (bad index) */ srtp_err_status_replay_old = 10, /**< replay check failed (index too old) */ srtp_err_status_algo_fail = 11, /**< algorithm failed test routine */ srtp_err_status_no_such_op = 12, /**< unsupported operation */ srtp_err_status_no_ctx = 13, /**< no appropriate context found */ srtp_err_status_cant_check = 14, /**< unable to perform desired validation */ srtp_err_status_key_expired = 15, /**< can't use key any more */ srtp_err_status_socket_err = 16, /**< error in use of socket */ srtp_err_status_signal_err = 17, /**< error in use POSIX signals */ srtp_err_status_nonce_bad = 18, /**< nonce check failed */ srtp_err_status_read_fail = 19, /**< couldn't read data */ srtp_err_status_write_fail = 20, /**< couldn't write data */ srtp_err_status_parse_err = 21, /**< error parsing data */ srtp_err_status_encode_err = 22, /**< error encoding data */ srtp_err_status_semaphore_err = 23,/**< error while using semaphores */ srtp_err_status_pfkey_err = 24 /**< error while using pfkey */ } srtp_err_status_t; typedef struct srtp_stream_ctx_t_ srtp_stream_ctx_t; typedef struct srtp_ctx_t_ srtp_ctx_t; /* * nota bene: since libSRTP doesn't support the use of the MKI, the * SRTP_MAX_TRAILER_LEN value is just the maximum tag length */ /** * @brief srtp_sec_serv_t describes a set of security services. * * A srtp_sec_serv_t enumeration is used to describe the particular * security services that will be applied by a particular crypto * policy (or other mechanism). */ typedef enum { sec_serv_none = 0, /**< no services */ sec_serv_conf = 1, /**< confidentiality */ sec_serv_auth = 2, /**< authentication */ sec_serv_conf_and_auth = 3 /**< confidentiality and authentication */ } srtp_sec_serv_t; /** * @brief srtp_crypto_policy_t describes a particular crypto policy that * can be applied to an SRTP stream. * * A srtp_crypto_policy_t describes a particular cryptographic policy that * can be applied to an SRTP or SRTCP stream. An SRTP session policy * consists of a list of these policies, one for each SRTP stream * in the session. */ typedef struct srtp_crypto_policy_t { srtp_cipher_type_id_t cipher_type; /**< An integer representing * the type of cipher. */ int cipher_key_len; /**< The length of the cipher key * in octets. */ srtp_auth_type_id_t auth_type; /**< An integer representing the * authentication function. */ int auth_key_len; /**< The length of the authentication * function key in octets. */ int auth_tag_len; /**< The length of the authentication * tag in octets. */ srtp_sec_serv_t sec_serv; /**< The flag indicating the security * services to be applied. */ } srtp_crypto_policy_t; /** * @brief srtp_ssrc_type_t describes the type of an SSRC. * * An srtp_ssrc_type_t enumeration is used to indicate a type of SSRC. See * @ref srtp_policy_t for more informataion. */ typedef enum { ssrc_undefined = 0, /**< Indicates an undefined SSRC type. */ ssrc_specific = 1, /**< Indicates a specific SSRC value */ ssrc_any_inbound = 2, /**< Indicates any inbound SSRC value (i.e. a value that is used in the function srtp_unprotect()) */ ssrc_any_outbound = 3 /**< Indicates any outbound SSRC value (i.e. a value that is used in the function srtp_protect()) */ } srtp_ssrc_type_t; /** * @brief An srtp_ssrc_t represents a particular SSRC value, or a `wildcard' SSRC. * * An srtp_ssrc_t represents a particular SSRC value (if its type is * ssrc_specific), or a wildcard SSRC value that will match all * outbound SSRCs (if its type is ssrc_any_outbound) or all inbound * SSRCs (if its type is ssrc_any_inbound). * */ typedef struct { srtp_ssrc_type_t type; /**< The type of this particular SSRC */ unsigned int value; /**< The value of this SSRC, if it is not a wildcard */ } srtp_ssrc_t; /** * @brief points to an EKT policy */ typedef struct srtp_ekt_policy_ctx_t *srtp_ekt_policy_t; /** * @brief points to EKT stream data */ typedef struct srtp_ekt_stream_ctx_t *srtp_ekt_stream_t; /** * @brief represents the policy for an SRTP session. * * A single srtp_policy_t struct represents the policy for a single * SRTP stream, and a linked list of these elements represents the * policy for an entire SRTP session. Each element contains the SRTP * and SRTCP crypto policies for that stream, a pointer to the SRTP * master key for that stream, the SSRC describing that stream, or a * flag indicating a `wildcard' SSRC value, and a `next' field that * holds a pointer to the next element in the list of policy elements, * or NULL if it is the last element. * * The wildcard value SSRC_ANY_INBOUND matches any SSRC from an * inbound stream that for which there is no explicit SSRC entry in * another policy element. Similarly, the value SSRC_ANY_OUTBOUND * will matches any SSRC from an outbound stream that does not appear * in another policy element. Note that wildcard SSRCs &b cannot be * used to match both inbound and outbound traffic. This restriction * is intentional, and it allows libSRTP to ensure that no security * lapses result from accidental re-use of SSRC values during key * sharing. * * * @warning The final element of the list @b must have its `next' pointer * set to NULL. */ typedef struct srtp_policy_t { srtp_ssrc_t ssrc; /**< The SSRC value of stream, or the * flags SSRC_ANY_INBOUND or * SSRC_ANY_OUTBOUND if key sharing * is used for this policy element. */ srtp_crypto_policy_t rtp; /**< SRTP crypto policy. */ srtp_crypto_policy_t rtcp; /**< SRTCP crypto policy. */ unsigned char *key; /**< Pointer to the SRTP master key for * this stream. */ srtp_ekt_policy_t ekt; /**< Pointer to the EKT policy structure * for this stream (if any) */ unsigned long window_size; /**< The window size to use for replay * protection. */ int allow_repeat_tx; /**< Whether retransmissions of * packets with the same sequence number * are allowed. (Note that such repeated * transmissions must have the same RTP * payload, or a severe security weakness * is introduced!) */ int *enc_xtn_hdr; /**< List of header ids to encrypt. */ int enc_xtn_hdr_count; /**< Number of entries in list of header ids. */ struct srtp_policy_t *next; /**< Pointer to next stream policy. */ } srtp_policy_t; /** * @brief An srtp_t points to an SRTP session structure. * * The typedef srtp_t is a pointer to a structure that represents * an SRTP session. This datatype is intentially opaque in * order to separate the interface from the implementation. * * An SRTP session consists of all of the traffic sent to the RTP and * RTCP destination transport addresses, using the RTP/SAVP (Secure * Audio/Video Profile). A session can be viewed as a set of SRTP * streams, each of which originates with a different participant. */ typedef srtp_ctx_t *srtp_t; /** * @brief An srtp_stream_t points to an SRTP stream structure. * * The typedef srtp_stream_t is a pointer to a structure that * represents an SRTP stream. This datatype is intentionally * opaque in order to separate the interface from the implementation. * * An SRTP stream consists of all of the traffic sent to an SRTP * session by a single participant. A session can be viewed as * a set of streams. * */ typedef srtp_stream_ctx_t *srtp_stream_t; /** * @brief srtp_init() initializes the srtp library. * * @warning This function @b must be called before any other srtp * functions. */ srtp_err_status_t srtp_init(void); /** * @brief srtp_shutdown() de-initializes the srtp library. * * @warning No srtp functions may be called after calling this function. */ srtp_err_status_t srtp_shutdown(void); /** * @brief srtp_protect() is the Secure RTP sender-side packet processing * function. * * The function call srtp_protect(ctx, rtp_hdr, len_ptr) applies SRTP * protection to the RTP packet rtp_hdr (which has length *len_ptr) using * the SRTP context ctx. If srtp_err_status_ok is returned, then rtp_hdr * points to the resulting SRTP packet and *len_ptr is the number of * octets in that packet; otherwise, no assumptions should be made * about the value of either data elements. * * The sequence numbers of the RTP packets presented to this function * need not be consecutive, but they @b must be out of order by less * than 2^15 = 32,768 packets. * * @warning This function assumes that it can write the authentication * tag into the location in memory immediately following the RTP * packet, and assumes that the RTP packet is aligned on a 32-bit * boundary. * * @warning This function assumes that it can write SRTP_MAX_TRAILER_LEN * into the location in memory immediately following the RTP packet. * Callers MUST ensure that this much writable memory is available in * the buffer that holds the RTP packet. * * @param ctx is the SRTP context to use in processing the packet. * * @param rtp_hdr is a pointer to the RTP packet (before the call); after * the function returns, it points to the srtp packet. * * @param len_ptr is a pointer to the length in octets of the complete * RTP packet (header and body) before the function call, and of the * complete SRTP packet after the call, if srtp_err_status_ok was returned. * Otherwise, the value of the data to which it points is undefined. * * @return * - srtp_err_status_ok no problems * - srtp_err_status_replay_fail rtp sequence number was non-increasing * - @e other failure in cryptographic mechanisms */ srtp_err_status_t srtp_protect(srtp_t ctx, void *rtp_hdr, int *len_ptr); /** * @brief srtp_unprotect() is the Secure RTP receiver-side packet * processing function. * * The function call srtp_unprotect(ctx, srtp_hdr, len_ptr) verifies * the Secure RTP protection of the SRTP packet pointed to by srtp_hdr * (which has length *len_ptr), using the SRTP context ctx. If * srtp_err_status_ok is returned, then srtp_hdr points to the resulting * RTP packet and *len_ptr is the number of octets in that packet; * otherwise, no assumptions should be made about the value of either * data elements. * * The sequence numbers of the RTP packets presented to this function * need not be consecutive, but they @b must be out of order by less * than 2^15 = 32,768 packets. * * @warning This function assumes that the SRTP packet is aligned on a * 32-bit boundary. * * @param ctx is the SRTP session which applies to the particular packet. * * @param srtp_hdr is a pointer to the header of the SRTP packet * (before the call). after the function returns, it points to the * rtp packet if srtp_err_status_ok was returned; otherwise, the value of * the data to which it points is undefined. * * @param len_ptr is a pointer to the length in octets of the complete * srtp packet (header and body) before the function call, and of the * complete rtp packet after the call, if srtp_err_status_ok was returned. * Otherwise, the value of the data to which it points is undefined. * * @return * - srtp_err_status_ok if the RTP packet is valid. * - srtp_err_status_auth_fail if the SRTP packet failed the message * authentication check. * - srtp_err_status_replay_fail if the SRTP packet is a replay (e.g. packet has * already been processed and accepted). * - [other] if there has been an error in the cryptographic mechanisms. * */ srtp_err_status_t srtp_unprotect(srtp_t ctx, void *srtp_hdr, int *len_ptr); /** * @brief srtp_create() allocates and initializes an SRTP session. * The function call srtp_create(session, policy) allocates and * initializes an SRTP session context, applying the given policy. * * @param session is a pointer to the SRTP session to which the policy is * to be added. * * @param policy is the srtp_policy_t struct that describes the policy * for the session. The struct may be a single element, or it may be * the head of a list, in which case each element of the list is * processed. It may also be NULL, in which case streams should be added * later using srtp_add_stream(). The final element of the list @b must * have its `next' field set to NULL. * * @return * - srtp_err_status_ok if creation succeded. * - srtp_err_status_alloc_fail if allocation failed. * - srtp_err_status_init_fail if initialization failed. */ srtp_err_status_t srtp_create(srtp_t *session, const srtp_policy_t *policy); /** * @brief srtp_add_stream() allocates and initializes an SRTP stream * within a given SRTP session. * * The function call srtp_add_stream(session, policy) allocates and * initializes a new SRTP stream within a given, previously created * session, applying the policy given as the other argument to that * stream. * * @return values: * - srtp_err_status_ok if stream creation succeded. * - srtp_err_status_alloc_fail if stream allocation failed * - srtp_err_status_init_fail if stream initialization failed. */ srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy); /** * @brief srtp_remove_stream() deallocates an SRTP stream. * * The function call srtp_remove_stream(session, ssrc) removes * the SRTP stream with the SSRC value ssrc from the SRTP session * context given by the argument session. * * @param session is the SRTP session from which the stream * will be removed. * * @param ssrc is the SSRC value of the stream to be removed * in network byte order. * * @warning Wildcard SSRC values cannot be removed from a * session. * * @return * - srtp_err_status_ok if the stream deallocation succeded. * - [other] otherwise. * */ srtp_err_status_t srtp_remove_stream(srtp_t session, unsigned int ssrc); /** * @brief srtp_update() udpates all streams in the session. * * The function call srtp_update(session, policy) updates * all the streams in the session applying the given policy * and key. The exsisting ROC value of all streams will be * preserved. * * @param session is the SRTP session that contains the streams * to be updated. * * @param policy is the srtp_policy_t struct that describes the policy * for the session. The struct may be a single element, or it may be * the head of a list, in which case each element of the list is * processed. The final element of the list @b must * have its `next' field set to NULL. * * @return * - srtp_err_status_ok if stream creation succeded. * - srtp_err_status_alloc_fail if stream allocation failed * - srtp_err_status_init_fail if stream initialization failed. * - [other] otherwise. * */ srtp_err_status_t srtp_update(srtp_t session, const srtp_policy_t *policy); /** * @brief srtp_update_stream() udpates a SRTP stream. * * The function call srtp_update_stream(session, policy) updates * the stream(s) in the session that match applying the given * policy and key. The exsisting ROC value of all stream(s) will * be preserved. * * @param session is the SRTP session that contains the streams * to be updated. * * @param policy is the srtp_policy_t struct that describes the policy * for the session. * * @return * - srtp_err_status_ok if stream creation succeded. * - srtp_err_status_alloc_fail if stream allocation failed * - srtp_err_status_init_fail if stream initialization failed. * - [other] otherwise. * */ srtp_err_status_t srtp_update_stream(srtp_t session, const srtp_policy_t *policy); /** * @brief srtp_crypto_policy_set_rtp_default() sets a crypto policy * structure to the SRTP default policy for RTP protection. * * @param p is a pointer to the policy structure to be set * * The function call crypto_policy_set_rtp_default(&p) sets the * crypto_policy_t at location p to the SRTP default policy for RTP * protection, as defined in the specification. This function is a * convenience that helps to avoid dealing directly with the policy * data structure. You are encouraged to initialize policy elements * with this function call. Doing so may allow your code to be * forward compatible with later versions of libSRTP that include more * elements in the crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_rtp_default(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_rtcp_default() sets a crypto policy * structure to the SRTP default policy for RTCP protection. * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_rtcp_default(&p) sets the * srtp_crypto_policy_t at location p to the SRTP default policy for RTCP * protection, as defined in the specification. This function is a * convenience that helps to avoid dealing directly with the policy * data structure. You are encouraged to initialize policy elements * with this function call. Doing so may allow your code to be * forward compatible with later versions of libSRTP that include more * elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_rtcp_default(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80() sets a crypto * policy structure to the SRTP default policy for RTP protection. * * @param p is a pointer to the policy structure to be set * * The function srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80() is a * synonym for srtp_crypto_policy_set_rtp_default(). It conforms to the * naming convention used in RFC 4568 (SDP Security Descriptions for * Media Streams). * * @return void. * */ #define srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(p) srtp_crypto_policy_set_rtp_default(p) /** * @brief srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32() sets a crypto * policy structure to a short-authentication tag policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(&p) * sets the srtp_crypto_policy_t at location p to use policy * AES_CM_128_HMAC_SHA1_32 as defined in RFC 4568. * This policy uses AES-128 * Counter Mode encryption and HMAC-SHA1 authentication, with an * authentication tag that is only 32 bits long. This length is * considered adequate only for protecting audio and video media that * use a stateless playback function. See Section 7.5 of RFC 3711 * (http://www.ietf.org/rfc/rfc3711.txt). * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @warning This crypto policy is intended for use in SRTP, but not in * SRTCP. It is recommended that a policy that uses longer * authentication tags be used for SRTCP. See Section 7.5 of RFC 3711 * (http://www.ietf.org/rfc/rfc3711.txt). * * @return void. * */ void srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_cm_128_null_auth() sets a crypto * policy structure to an encryption-only policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_cm_128_null_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-128 Counter Mode), but to use no authentication method. This * policy is NOT RECOMMENDED unless it is unavoidable; see Section 7.5 * of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt). * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @warning This policy is NOT RECOMMENDED for SRTP unless it is * unavoidable, and it is NOT RECOMMENDED at all for SRTCP; see * Section 7.5 of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt). * * @return void. * */ void srtp_crypto_policy_set_aes_cm_128_null_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_null_cipher_hmac_sha1_80() sets a crypto * policy structure to an authentication-only policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_null_cipher_hmac_sha1_80(&p) * sets the srtp_crypto_policy_t at location p to use HMAC-SHA1 with an 80 * bit authentication tag to provide message authentication, but to * use no encryption. This policy is NOT RECOMMENDED for SRTP unless * there is a requirement to forego encryption. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @warning This policy is NOT RECOMMENDED for SRTP unless there is a * requirement to forego encryption. * * @return void. * */ void srtp_crypto_policy_set_null_cipher_hmac_sha1_80(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_null_cipher_hmac_null() sets a crypto * policy structure to use no encryption or authentication. * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_null_cipher_hmac_null(&p) * sets the srtp_crypto_policy_t at location p to use no encryption and * no authentication. This policy should only be used for testing and * troubleshootingl. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @warning This policy is NOT RECOMMENDED for SRTP unless there is a * requirement to forego encryption and authentication. * * @return void. * */ void srtp_crypto_policy_set_null_cipher_hmac_null(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80() sets a crypto * policy structure to a encryption and authentication policy using AES-256 * for RTP protection. * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&p) * sets the srtp_crypto_policy_t at location p to use policy * AES_CM_256_HMAC_SHA1_80 as defined in * draft-ietf-avt-srtp-big-aes-03.txt. This policy uses AES-256 * Counter Mode encryption and HMAC-SHA1 authentication, with an 80 bit * authentication tag. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32() sets a crypto * policy structure to a short-authentication tag policy using AES-256 * encryption. * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(&p) * sets the srtp_crypto_policy_t at location p to use policy * AES_CM_256_HMAC_SHA1_32 as defined in * draft-ietf-avt-srtp-big-aes-03.txt. This policy uses AES-256 * Counter Mode encryption and HMAC-SHA1 authentication, with an * authentication tag that is only 32 bits long. This length is * considered adequate only for protecting audio and video media that * use a stateless playback function. See Section 7.5 of RFC 3711 * (http://www.ietf.org/rfc/rfc3711.txt). * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @warning This crypto policy is intended for use in SRTP, but not in * SRTCP. It is recommended that a policy that uses longer * authentication tags be used for SRTCP. See Section 7.5 of RFC 3711 * (http://www.ietf.org/rfc/rfc3711.txt). * * @return void. * */ void srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_cm_256_null_auth() sets a crypto * policy structure to an encryption-only policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_cm_256_null_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-256 Counter Mode), but to use no authentication method. This * policy is NOT RECOMMENDED unless it is unavoidable; see Section 7.5 * of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt). * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @warning This policy is NOT RECOMMENDED for SRTP unless it is * unavoidable, and it is NOT RECOMMENDED at all for SRTCP; see * Section 7.5 of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt). * * @return void. * */ void srtp_crypto_policy_set_aes_cm_256_null_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_gcm_128_8_auth() sets a crypto * policy structure to an AEAD encryption policy. * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_gcm_128_8_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-128 Galois Counter Mode) with 8 octet auth tag. This * policy applies confidentiality and authentication to both the * RTP and RTCP packets. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_gcm_128_8_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_gcm_256_8_auth() sets a crypto * policy structure to an AEAD encryption policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_gcm_256_8_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-256 Galois Counter Mode) with 8 octet auth tag. This * policy applies confidentiality and authentication to both the * RTP and RTCP packets. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_gcm_256_8_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_gcm_128_8_only_auth() sets a crypto * policy structure to an AEAD authentication-only policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_gcm_128_8_only_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-128 Galois Counter Mode) with 8 octet auth tag. This policy * applies confidentiality and authentication to the RTP packets, * but only authentication to the RTCP packets. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_gcm_128_8_only_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_gcm_256_8_only_auth() sets a crypto * policy structure to an AEAD authentication-only policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_gcm_256_8_only_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-256 Galois Counter Mode) with 8 octet auth tag. This policy * applies confidentiality and authentication to the RTP packets, * but only authentication to the RTCP packets. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_gcm_256_8_only_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_gcm_128_16_auth() sets a crypto * policy structure to an AEAD encryption policy. * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_gcm_128_16_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-128 Galois Counter Mode) with 16 octet auth tag. This * policy applies confidentiality and authentication to both the * RTP and RTCP packets. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_gcm_128_16_auth(srtp_crypto_policy_t *p); /** * @brief srtp_crypto_policy_set_aes_gcm_256_16_auth() sets a crypto * policy structure to an AEAD encryption policy * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_aes_gcm_256_16_auth(&p) sets * the srtp_crypto_policy_t at location p to use the SRTP default cipher * (AES-256 Galois Counter Mode) with 16 octet auth tag. This * policy applies confidentiality and authentication to both the * RTP and RTCP packets. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return void. * */ void srtp_crypto_policy_set_aes_gcm_256_16_auth(srtp_crypto_policy_t *p); /** * @brief srtp_dealloc() deallocates storage for an SRTP session * context. * * The function call srtp_dealloc(s) deallocates storage for the * SRTP session context s. This function should be called no more * than one time for each of the contexts allocated by the function * srtp_create(). * * @param s is the srtp_t for the session to be deallocated. * * @return * - srtp_err_status_ok if there no problems. * - srtp_err_status_dealloc_fail a memory deallocation failure occured. */ srtp_err_status_t srtp_dealloc(srtp_t s); /* * @brief identifies a particular SRTP profile * * An srtp_profile_t enumeration is used to identify a particular SRTP * profile (that is, a set of algorithms and parameters). These * profiles are defined in the DTLS-SRTP draft. */ typedef enum { srtp_profile_reserved = 0, srtp_profile_aes128_cm_sha1_80 = 1, srtp_profile_aes128_cm_sha1_32 = 2, srtp_profile_aes256_cm_sha1_80 = 3, srtp_profile_aes256_cm_sha1_32 = 4, srtp_profile_null_sha1_80 = 5, srtp_profile_null_sha1_32 = 6, } srtp_profile_t; /** * @brief srtp_crypto_policy_set_from_profile_for_rtp() sets a crypto policy * structure to the appropriate value for RTP based on an srtp_profile_t * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_rtp_default(&policy, profile) * sets the srtp_crypto_policy_t at location policy to the policy for RTP * protection, as defined by the srtp_profile_t profile. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return values * - srtp_err_status_ok no problems were encountered * - srtp_err_status_bad_param the profile is not supported * */ srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtp(srtp_crypto_policy_t *policy, srtp_profile_t profile); /** * @brief srtp_crypto_policy_set_from_profile_for_rtcp() sets a crypto policy * structure to the appropriate value for RTCP based on an srtp_profile_t * * @param p is a pointer to the policy structure to be set * * The function call srtp_crypto_policy_set_rtcp_default(&policy, profile) * sets the srtp_crypto_policy_t at location policy to the policy for RTCP * protection, as defined by the srtp_profile_t profile. * * This function is a convenience that helps to avoid dealing directly * with the policy data structure. You are encouraged to initialize * policy elements with this function call. Doing so may allow your * code to be forward compatible with later versions of libSRTP that * include more elements in the srtp_crypto_policy_t datatype. * * @return values * - srtp_err_status_ok no problems were encountered * - srtp_err_status_bad_param the profile is not supported * */ srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtcp(srtp_crypto_policy_t *policy, srtp_profile_t profile); /** * @brief returns the master key length for a given SRTP profile */ unsigned int srtp_profile_get_master_key_length(srtp_profile_t profile); /** * @brief returns the master salt length for a given SRTP profile */ unsigned int srtp_profile_get_master_salt_length(srtp_profile_t profile); /** * @brief appends the salt to the key * * The function call srtp_append_salt_to_key(k, klen, s, slen) * copies the string s to the location at klen bytes following * the location k. * * @warning There must be at least bytes_in_salt + bytes_in_key bytes * available at the location pointed to by key. * */ void srtp_append_salt_to_key(unsigned char *key, unsigned int bytes_in_key, unsigned char *salt, unsigned int bytes_in_salt); /** * @} */ /** * @defgroup SRTCP Secure RTCP * @ingroup SRTP * * @brief Secure RTCP functions are used to protect RTCP traffic. * * RTCP is the control protocol for RTP. libSRTP protects RTCP * traffic in much the same way as it does RTP traffic. The function * srtp_protect_rtcp() applies cryptographic protections to outbound * RTCP packets, and srtp_unprotect_rtcp() verifies the protections on * inbound RTCP packets. * * A note on the naming convention: srtp_protect_rtcp() has an srtp_t * as its first argument, and thus has `srtp_' as its prefix. The * trailing `_rtcp' indicates the protocol on which it acts. * * @{ */ /** * @brief srtp_protect_rtcp() is the Secure RTCP sender-side packet * processing function. * * The function call srtp_protect_rtcp(ctx, rtp_hdr, len_ptr) applies * SRTCP protection to the RTCP packet rtcp_hdr (which has length * *len_ptr) using the SRTP session context ctx. If srtp_err_status_ok is * returned, then rtp_hdr points to the resulting SRTCP packet and * *len_ptr is the number of octets in that packet; otherwise, no * assumptions should be made about the value of either data elements. * * @warning This function assumes that it can write the authentication * tag into the location in memory immediately following the RTCP * packet, and assumes that the RTCP packet is aligned on a 32-bit * boundary. * * @warning This function assumes that it can write SRTP_MAX_TRAILER_LEN+4 * into the location in memory immediately following the RTCP packet. * Callers MUST ensure that this much writable memory is available in * the buffer that holds the RTCP packet. * * @param ctx is the SRTP context to use in processing the packet. * * @param rtcp_hdr is a pointer to the RTCP packet (before the call); after * the function returns, it points to the srtp packet. * * @param pkt_octet_len is a pointer to the length in octets of the * complete RTCP packet (header and body) before the function call, * and of the complete SRTCP packet after the call, if srtp_err_status_ok * was returned. Otherwise, the value of the data to which it points * is undefined. * * @return * - srtp_err_status_ok if there were no problems. * - [other] if there was a failure in * the cryptographic mechanisms. */ srtp_err_status_t srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len); /** * @brief srtp_unprotect_rtcp() is the Secure RTCP receiver-side packet * processing function. * * The function call srtp_unprotect_rtcp(ctx, srtp_hdr, len_ptr) * verifies the Secure RTCP protection of the SRTCP packet pointed to * by srtcp_hdr (which has length *len_ptr), using the SRTP session * context ctx. If srtp_err_status_ok is returned, then srtcp_hdr points * to the resulting RTCP packet and *len_ptr is the number of octets * in that packet; otherwise, no assumptions should be made about the * value of either data elements. * * @warning This function assumes that the SRTCP packet is aligned on a * 32-bit boundary. * * @param ctx is a pointer to the srtp_t which applies to the * particular packet. * * @param srtcp_hdr is a pointer to the header of the SRTCP packet * (before the call). After the function returns, it points to the * rtp packet if srtp_err_status_ok was returned; otherwise, the value of * the data to which it points is undefined. * * @param pkt_octet_len is a pointer to the length in octets of the * complete SRTCP packet (header and body) before the function call, * and of the complete rtp packet after the call, if srtp_err_status_ok was * returned. Otherwise, the value of the data to which it points is * undefined. * * @return * - srtp_err_status_ok if the RTCP packet is valid. * - srtp_err_status_auth_fail if the SRTCP packet failed the message * authentication check. * - srtp_err_status_replay_fail if the SRTCP packet is a replay (e.g. has * already been processed and accepted). * - [other] if there has been an error in the cryptographic mechanisms. * */ srtp_err_status_t srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len); /** * @} */ /** * @defgroup User data associated to a SRTP session. * @ingroup SRTP * * @brief Store custom user data within a SRTP session. * * @{ */ /** * @brief srtp_set_user_data() stores the given pointer into the SRTP * session for later retrieval. * * @param ctx is the srtp_t context in which the given data pointer is * stored. * * @param data is a pointer to the custom information (struct, function, * etc) associated with the SRTP session. * * @return void. * */ void srtp_set_user_data(srtp_t ctx, void *data); /** * @brief srtp_get_user_data() retrieves the pointer to the custom data * previously stored with srtp_set_user_data(). * * This function is mostly useful for retrieving data associated to a * SRTP session when an event fires. The user can then get such a custom * data by calling this function with the session field of the * srtp_event_data_t struct as argument. * * @param ctx is the srtp_t context in which the given data pointer was * stored. * * @return void* pointer to the user data. * */ void* srtp_get_user_data(srtp_t ctx); /** * @} */ /** * @defgroup SRTPevents SRTP events and callbacks * @ingroup SRTP * * @brief libSRTP can use a user-provided callback function to * handle events. * * * libSRTP allows a user to provide a callback function to handle * events that need to be dealt with outside of the data plane (see * the enum srtp_event_t for a description of these events). Dealing * with these events is not a strict necessity; they are not * security-critical, but the application may suffer if they are not * handled. The function srtp_set_event_handler() is used to provide * the callback function. * * A default event handler that merely reports on the events as they * happen is included. It is also possible to set the event handler * function to NULL, in which case all events will just be silently * ignored. * * @{ */ /** * @brief srtp_event_t defines events that need to be handled * * The enum srtp_event_t defines events that need to be handled * outside the `data plane', such as SSRC collisions and * key expirations. * * When a key expires or the maximum number of packets has been * reached, an SRTP stream will enter an `expired' state in which no * more packets can be protected or unprotected. When this happens, * it is likely that you will want to either deallocate the stream * (using srtp_remove_stream()), and possibly allocate a new one. * * When an SRTP stream expires, the other streams in the same session * are unaffected, unless key sharing is used by that stream. In the * latter case, all of the streams in the session will expire. */ typedef enum { event_ssrc_collision, /**< * An SSRC collision occured. */ event_key_soft_limit, /**< An SRTP stream reached the soft key * usage limit and will expire soon. */ event_key_hard_limit, /**< An SRTP stream reached the hard * key usage limit and has expired. */ event_packet_index_limit /**< An SRTP stream reached the hard * packet limit (2^48 packets). */ } srtp_event_t; /** * @brief srtp_event_data_t is the structure passed as a callback to * the event handler function * * The struct srtp_event_data_t holds the data passed to the event * handler function. */ typedef struct srtp_event_data_t { srtp_t session; /**< The session in which the event happend. */ srtp_stream_t stream; /**< The stream in which the event happend. */ srtp_event_t event; /**< An enum indicating the type of event. */ } srtp_event_data_t; /** * @brief srtp_event_handler_func_t is the function prototype for * the event handler. * * The typedef srtp_event_handler_func_t is the prototype for the * event handler function. It has as its only argument an * srtp_event_data_t which describes the event that needs to be handled. * There can only be a single, global handler for all events in * libSRTP. */ typedef void (srtp_event_handler_func_t)(srtp_event_data_t *data); /** * @brief sets the event handler to the function supplied by the caller. * * The function call srtp_install_event_handler(func) sets the event * handler function to the value func. The value NULL is acceptable * as an argument; in this case, events will be ignored rather than * handled. * * @param func is a pointer to a fuction that takes an srtp_event_data_t * pointer as an argument and returns void. This function * will be used by libSRTP to handle events. */ srtp_err_status_t srtp_install_event_handler(srtp_event_handler_func_t func); /** * @brief Returns the version string of the library. * */ const char *srtp_get_version_string(void); /** * @brief Returns the numeric representation of the library version. * */ unsigned int srtp_get_version(void); /** * @brief srtp_set_debug_module(mod_name, v) * * sets dynamic debugging to the value v (0 for off, 1 for on) for the * debug module with the name mod_name * * returns err_status_ok on success, err_status_fail otherwise */ srtp_err_status_t srtp_set_debug_module(char *mod_name, int v); /** * @brief srtp_list_debug_modules() outputs a list of debugging modules * */ srtp_err_status_t srtp_list_debug_modules(void); /** * @} */ /* in host order, so outside the #if */ #define SRTCP_E_BIT 0x80000000 /* for byte-access */ #define SRTCP_E_BYTE_BIT 0x80 #define SRTCP_INDEX_MASK 0x7fffffff #ifdef __cplusplus } #endif #endif /* SRTP_H */ ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/srtp_priv.h��������������������������������0000664�0000000�0000000�00000011514�13041410345�0023401�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * srtp_priv.h * * private internal data structures and functions for libSRTP * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef SRTP_PRIV_H #define SRTP_PRIV_H #include "config.h" #include "srtp.h" #include "rdbx.h" #include "rdb.h" #include "integers.h" #include "cipher.h" #include "auth.h" #include "aes.h" #include "key.h" #include "crypto_kernel.h" #ifdef __cplusplus extern "C" { #endif #define SRTP_VER_STRING PACKAGE_STRING #define SRTP_VERSION PACKAGE_VERSION /* * the following declarations are libSRTP internal functions */ /* * srtp_get_stream(ssrc) returns a pointer to the stream corresponding * to ssrc, or NULL if no stream exists for that ssrc */ srtp_stream_t srtp_get_stream(srtp_t srtp, uint32_t ssrc); /* * srtp_stream_init_keys(s, k) (re)initializes the srtp_stream_t s by * deriving all of the needed keys using the KDF and the key k. */ srtp_err_status_t srtp_stream_init_keys(srtp_stream_t srtp, const void *key); /* * srtp_stream_init(s, p) initializes the srtp_stream_t s to * use the policy at the location p */ srtp_err_status_t srtp_stream_init(srtp_stream_t srtp, const srtp_policy_t *p); /* * libsrtp internal datatypes */ typedef enum direction_t { dir_unknown = 0, dir_srtp_sender = 1, dir_srtp_receiver = 2 } direction_t; /* * an srtp_stream_t has its own SSRC, encryption key, authentication * key, sequence number, and replay database * * note that the keys might not actually be unique, in which case the * srtp_cipher_t and srtp_auth_t pointers will point to the same structures */ typedef struct srtp_stream_ctx_t_ { uint32_t ssrc; srtp_cipher_t *rtp_cipher; srtp_cipher_t *rtp_xtn_hdr_cipher; srtp_auth_t *rtp_auth; srtp_rdbx_t rtp_rdbx; srtp_sec_serv_t rtp_services; srtp_cipher_t *rtcp_cipher; srtp_auth_t *rtcp_auth; srtp_rdb_t rtcp_rdb; srtp_sec_serv_t rtcp_services; srtp_key_limit_ctx_t *limit; direction_t direction; int allow_repeat_tx; srtp_ekt_stream_t ekt; uint8_t salt[SRTP_AEAD_SALT_LEN]; /* used with GCM mode for SRTP */ uint8_t c_salt[SRTP_AEAD_SALT_LEN]; /* used with GCM mode for SRTCP */ int *enc_xtn_hdr; int enc_xtn_hdr_count; struct srtp_stream_ctx_t_ *next; /* linked list of streams */ } strp_stream_ctx_t_; /* * an srtp_ctx_t holds a stream list and a service description */ typedef struct srtp_ctx_t_ { struct srtp_stream_ctx_t_ *stream_list; /* linked list of streams */ struct srtp_stream_ctx_t_ *stream_template; /* act as template for other streams */ void *user_data; /* user custom data */ } srtp_ctx_t_; /* * srtp_handle_event(srtp, srtm, evnt) calls the event handling * function, if there is one. * * This macro is not included in the documentation as it is * an internal-only function. */ #define srtp_handle_event(srtp, strm, evnt) \ if(srtp_event_handler) { \ srtp_event_data_t data; \ data.session = srtp; \ data.stream = strm; \ data.event = evnt; \ srtp_event_handler(&data); \ } #ifdef __cplusplus } #endif #endif /* SRTP_PRIV_H */ ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/include/ut_sim.h�����������������������������������0000664�0000000�0000000�00000004535�13041410345�0022656�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * ut-sim.h * * an unreliable transport simulator * (for testing replay databases and suchlike) * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef UT_SIM_H #define UT_SIM_H #include "integers.h" /* for uint32_t */ #ifdef __cplusplus extern "C" { #endif #define UT_BUF 160 /* maximum amount of packet reorder */ typedef struct { uint32_t index; uint32_t buffer[UT_BUF]; } ut_connection; /* * ut_init(&u) initializes the ut_connection * * this function should always be the first one called on a new * ut_connection */ void ut_init(ut_connection *utc); /* * ut_next_index(&u) returns the next index from the simulated * unreliable connection */ uint32_t ut_next_index(ut_connection *utc); #ifdef __cplusplus } #endif #endif /* UT_SIM_H */ �������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/install-sh�����������������������������������������0000775�0000000�0000000�00000034523�13041410345�0021566�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/bin/sh # install - install a program, script, or datafile scriptversion=2013-12-25.23; # UTC # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the # following copyright and license. # # Copyright (C) 1994 X Consortium # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # Except as contained in this notice, the name of the X Consortium shall not # be used in advertising or otherwise to promote the sale, use or other deal- # ings in this Software without prior written authorization from the X Consor- # tium. # # # FSF changes to this file are in the public domain. # # Calling this script install-sh is preferred over install.sh, to prevent # 'make' implicit rules from creating a file called install from it # when there is no Makefile. # # This script is compatible with the BSD install script, but was written # from scratch. tab=' ' nl=' ' IFS=" $tab$nl" # Set DOITPROG to "echo" to test this script. doit=${DOITPROG-} doit_exec=${doit:-exec} # Put in absolute file names if you don't have them in your path; # or use environment vars. chgrpprog=${CHGRPPROG-chgrp} chmodprog=${CHMODPROG-chmod} chownprog=${CHOWNPROG-chown} cmpprog=${CMPPROG-cmp} cpprog=${CPPROG-cp} mkdirprog=${MKDIRPROG-mkdir} mvprog=${MVPROG-mv} rmprog=${RMPROG-rm} stripprog=${STRIPPROG-strip} posix_mkdir= # Desired mode of installed file. mode=0755 chgrpcmd= chmodcmd=$chmodprog chowncmd= mvcmd=$mvprog rmcmd="$rmprog -f" stripcmd= src= dst= dir_arg= dst_arg= copy_on_change=false is_target_a_directory=possibly usage="\ Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE or: $0 [OPTION]... SRCFILES... DIRECTORY or: $0 [OPTION]... -t DIRECTORY SRCFILES... or: $0 [OPTION]... -d DIRECTORIES... In the 1st form, copy SRCFILE to DSTFILE. In the 2nd and 3rd, copy all SRCFILES to DIRECTORY. In the 4th, create DIRECTORIES. Options: --help display this help and exit. --version display version info and exit. -c (ignored) -C install only if different (preserve the last data modification time) -d create directories instead of installing files. -g GROUP $chgrpprog installed files to GROUP. -m MODE $chmodprog installed files to MODE. -o USER $chownprog installed files to USER. -s $stripprog installed files. -t DIRECTORY install into DIRECTORY. -T report an error if DSTFILE is a directory. Environment variables override the default commands: CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG " while test $# -ne 0; do case $1 in -c) ;; -C) copy_on_change=true;; -d) dir_arg=true;; -g) chgrpcmd="$chgrpprog $2" shift;; --help) echo "$usage"; exit $?;; -m) mode=$2 case $mode in *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*) echo "$0: invalid mode: $mode" >&2 exit 1;; esac shift;; -o) chowncmd="$chownprog $2" shift;; -s) stripcmd=$stripprog;; -t) is_target_a_directory=always dst_arg=$2 # Protect names problematic for 'test' and other utilities. case $dst_arg in -* | [=\(\)!]) dst_arg=./$dst_arg;; esac shift;; -T) is_target_a_directory=never;; --version) echo "$0 $scriptversion"; exit $?;; --) shift break;; -*) echo "$0: invalid option: $1" >&2 exit 1;; *) break;; esac shift done # We allow the use of options -d and -T together, by making -d # take the precedence; this is for compatibility with GNU install. if test -n "$dir_arg"; then if test -n "$dst_arg"; then echo "$0: target directory not allowed when installing a directory." >&2 exit 1 fi fi if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then # When -d is used, all remaining arguments are directories to create. # When -t is used, the destination is already specified. # Otherwise, the last argument is the destination. 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If we want to # ignore errors from any of these, just make sure not to ignore # errors from the above "$doit $cpprog $src $dsttmp" command. # { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } && { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && # If -C, don't bother to copy if it wouldn't change the file. if $copy_on_change && old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` && new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` && set -f && set X $old && old=:$2:$4:$5:$6 && set X $new && new=:$2:$4:$5:$6 && set +f && test "$old" = "$new" && $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1 then rm -f "$dsttmp" else # Rename the file to the real destination. $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null || # The rename failed, perhaps because mv can't rename something else # to itself, or perhaps because mv is so ancient that it does not # support -f. { # Now remove or move aside any old file at destination location. # We try this two ways since rm can't unlink itself on some # systems and the destination file might be busy for other # reasons. In this case, the final cleanup might fail but the new # file should still install successfully. { test ! -f "$dst" || $doit $rmcmd -f "$dst" 2>/dev/null || { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null && { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; } } || { echo "$0: cannot unlink or rename $dst" >&2 (exit 1); exit 1 } } && # Now rename the file to the real destination. $doit $mvcmd "$dsttmp" "$dst" } fi || exit 1 trap '' 0 fi done # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC" # time-stamp-end: "; # UTC" # End: �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/install-win.bat������������������������������������0000664�0000000�0000000�00000001653�13041410345�0022511�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������:: Installs from srtp windows build directory to directory specified on :: command line @if "%1"=="" ( echo "Usage: %~nx0 destdir" exit /b 1 ) else ( set destdir=%1 ) @if not exist %destdir% ( echo %destdir% not found exit /b 1 ) @for %%d in (include\srtp.h crypto\include\cipher.h Debug\srtp2.lib Release\srtp2.lib x64\Debug\srtp2.lib x64\Release\srtp2.lib) do ( if not exist "%%d" ( echo "%%d not found: are you in the right directory?" exit /b 1 ) ) mkdir %destdir%\include mkdir %destdir%\include\srtp2 mkdir %destdir%\lib mkdir %destdir%\lib\x64 @for %%d in (include\srtp.h include\ekt.h crypto\include\cipher.h crypto\include\auth.h crypto\include\crypto_types.h) do ( copy %%d %destdir%\include\srtp2 ) copy Release\srtp2.lib %destdir%\lib\srtp2.lib copy Debug\srtp2.lib %destdir%\lib\srtp2d.lib copy x64\Release\srtp2.lib %destdir%\lib\x64\srtp2.lib copy x64\Debug\srtp2.lib %destdir%\lib\x64\srtp2d.lib �������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/libsrtp2.pc.in�������������������������������������0000664�0000000�0000000�00000000373�13041410345�0022250�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������prefix=@prefix@ exec_prefix=@prefix@ libdir=@libdir@ includedir=@includedir@ Name: @PACKAGE_NAME@ Version: @PACKAGE_VERSION@ Description: Library for SRTP (Secure Realtime Transport Protocol) Libs: -L${libdir} -lsrtp2 @LIBS@ Cflags: -I${includedir} ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/srtp.def�������������������������������������������0000664�0000000�0000000�00000003401�13041410345�0021221�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������EXPORTS srtp_init srtp_shutdown srtp_protect srtp_unprotect srtp_create srtp_add_stream srtp_remove_stream srtp_update srtp_update_stream srtp_crypto_policy_set_rtp_default srtp_crypto_policy_set_rtcp_default srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32 srtp_crypto_policy_set_aes_cm_128_null_auth srtp_crypto_policy_set_null_cipher_hmac_sha1_80 srtp_crypto_policy_set_null_cipher_hmac_null srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80 srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32 srtp_crypto_policy_set_aes_cm_256_null_auth ; TODO - GCM module not yet supported on Win32 ; srtp_crypto_policy_set_aes_gcm_128_8_auth ; srtp_crypto_policy_set_aes_gcm_256_8_auth ; srtp_crypto_policy_set_aes_gcm_128_8_only_auth ; srtp_crypto_policy_set_aes_gcm_256_8_only_auth ; srtp_crypto_policy_set_aes_gcm_128_16_auth ; srtp_crypto_policy_set_aes_gcm_256_16_auth srtp_dealloc srtp_crypto_policy_set_from_profile_for_rtp srtp_crypto_policy_set_from_profile_for_rtcp srtp_profile_get_master_key_length srtp_profile_get_master_salt_length srtp_append_salt_to_key srtp_protect_rtcp srtp_unprotect_rtcp srtp_set_user_data srtp_get_user_data srtp_install_event_handler srtp_get_version_string srtp_get_version srtp_set_debug_module srtp_list_debug_modules srtp_ekt_octets_after_base_tag srtp_ekt_alloc srtp_ekt_stream_init_from_policy srtp_ekt_write_data srtp_cipher_get_key_length srtp_cipher_type_self_test srtp_cipher_type_test srtp_cipher_bits_per_second srtp_cipher_type_alloc srtp_cipher_dealloc srtp_cipher_init srtp_cipher_set_iv srtp_cipher_output srtp_cipher_encrypt srtp_cipher_decrypt srtp_cipher_get_tag srtp_cipher_set_aad srtp_replace_cipher_type srtp_auth_get_key_length srtp_auth_get_tag_length srtp_auth_get_prefix_length srtp_auth_type_self_test srtp_auth_type_test srtp_replace_auth_type ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/srtp.sln�������������������������������������������0000664�0000000�0000000�00000004113�13041410345�0021260�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������ Microsoft Visual Studio Solution File, Format Version 12.00 # Visual Studio Express 14 for Windows Desktop VisualStudioVersion = 14.0.25123.0 MinimumVisualStudioVersion = 10.0.40219.1 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "srtp2", "srtp2.vcxproj", "{EEF031CB-FED8-451E-A471-91EC8D4F6750}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug Dll|Win32 = Debug Dll|Win32 Debug Dll|x64 = Debug Dll|x64 Debug|Win32 = Debug|Win32 Debug|x64 = Debug|x64 Release Dll|Win32 = Release Dll|Win32 Release Dll|x64 = Release Dll|x64 Release|Win32 = Release|Win32 Release|x64 = Release|x64 EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug Dll|Win32.ActiveCfg = Debug Dll|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug Dll|Win32.Build.0 = Debug Dll|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug Dll|x64.ActiveCfg = Debug Dll|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug Dll|x64.Build.0 = Debug Dll|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug|Win32.ActiveCfg = Debug|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug|Win32.Build.0 = Debug|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug|x64.ActiveCfg = Debug|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Debug|x64.Build.0 = Debug|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release Dll|Win32.ActiveCfg = Release Dll|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release Dll|Win32.Build.0 = Release Dll|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release Dll|x64.ActiveCfg = Release Dll|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release Dll|x64.Build.0 = Release Dll|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release|Win32.ActiveCfg = Release|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release|Win32.Build.0 = Release|Win32 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release|x64.ActiveCfg = Release|x64 {EEF031CB-FED8-451E-A471-91EC8D4F6750}.Release|x64.Build.0 = Release|x64 EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection EndGlobal �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/srtp/����������������������������������������������0000775�0000000�0000000�00000000000�13041410345�0020543�5����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/srtp/ekt.c�����������������������������������������0000664�0000000�0000000�00000020134�13041410345�0021472�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * ekt.c * * Encrypted Key Transport for SRTP * * David McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include "srtp_priv.h" #include "err.h" #include "ekt.h" extern srtp_debug_module_t mod_srtp; /* * The EKT Authentication Tag format. * * 0 1 2 3 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * : Base Authentication Tag : * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * : Encrypted Master Key : * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Rollover Counter | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Initial Sequence Number | Security Parameter Index | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * */ #define EKT_OCTETS_AFTER_BASE_TAG 24 #define EKT_OCTETS_AFTER_EMK 8 #define EKT_OCTETS_AFTER_ROC 4 #define EKT_SPI_LEN 2 unsigned srtp_ekt_octets_after_base_tag(srtp_ekt_stream_t ekt) { /* * if the pointer ekt is NULL, then EKT is not in effect, so we * indicate this by returning zero */ if (!ekt) return 0; switch(ekt->data->ekt_cipher_type) { case SRTP_EKT_CIPHER_AES_128_ECB: return 16 + EKT_OCTETS_AFTER_EMK; break; default: break; } return 0; } static inline srtp_ekt_spi_t srtcp_packet_get_ekt_spi(const uint8_t *packet_start, unsigned pkt_octet_len) { const uint8_t *spi_location; spi_location = packet_start + (pkt_octet_len - EKT_SPI_LEN); return *((const srtp_ekt_spi_t *)spi_location); } static inline uint32_t srtcp_packet_get_ekt_roc(const uint8_t *packet_start, unsigned pkt_octet_len) { const uint8_t *roc_location; roc_location = packet_start + (pkt_octet_len - EKT_OCTETS_AFTER_ROC); return *((const uint32_t *)roc_location); } static inline const uint8_t * srtcp_packet_get_emk_location(const uint8_t *packet_start, unsigned pkt_octet_len) { const uint8_t *location; location = packet_start + (pkt_octet_len - EKT_OCTETS_AFTER_BASE_TAG); return location; } srtp_err_status_t srtp_ekt_alloc(srtp_ekt_stream_t *stream_data, srtp_ekt_policy_t policy) { /* * if the policy pointer is NULL, then EKT is not in use * so we just set the EKT stream data pointer to NULL */ if (!policy) { *stream_data = NULL; return srtp_err_status_ok; } /* TODO */ *stream_data = NULL; return srtp_err_status_ok; } srtp_err_status_t srtp_ekt_stream_init_from_policy(srtp_ekt_stream_t stream_data, srtp_ekt_policy_t policy) { if (!stream_data) return srtp_err_status_ok; return srtp_err_status_ok; } void aes_decrypt_with_raw_key(void *ciphertext, const void *key, int key_len) { #ifndef OPENSSL //FIXME: need to get this working through the crypto module interface srtp_aes_expanded_key_t expanded_key; srtp_aes_expand_decryption_key(key, key_len, &expanded_key); srtp_aes_decrypt(ciphertext, &expanded_key); #endif } /* * The function srtp_stream_init_from_ekt() initializes a stream using * the EKT data from an SRTCP trailer. */ srtp_err_status_t srtp_stream_init_from_ekt(srtp_stream_t stream, const void *srtcp_hdr, unsigned pkt_octet_len) { srtp_err_status_t err; const uint8_t *master_key; srtp_policy_t srtp_policy; uint32_t roc; /* * NOTE: at present, we only support a single ekt_policy at a time. */ if (stream->ekt->data->spi != srtcp_packet_get_ekt_spi(srtcp_hdr, pkt_octet_len)) return srtp_err_status_no_ctx; if (stream->ekt->data->ekt_cipher_type != SRTP_EKT_CIPHER_AES_128_ECB) return srtp_err_status_bad_param; /* decrypt the Encrypted Master Key field */ master_key = srtcp_packet_get_emk_location(srtcp_hdr, pkt_octet_len); /* FIX!? This decrypts the master key in-place, and never uses it */ /* FIX!? It's also passing to ekt_dec_key (which is an aes_expanded_key_t) * to a function which expects a raw (unexpanded) key */ aes_decrypt_with_raw_key((void*)master_key, &stream->ekt->data->ekt_dec_key, 16); /* set the SRTP ROC */ roc = srtcp_packet_get_ekt_roc(srtcp_hdr, pkt_octet_len); err = srtp_rdbx_set_roc(&stream->rtp_rdbx, roc); if (err) return err; err = srtp_stream_init(stream, &srtp_policy); if (err) return err; return srtp_err_status_ok; } void srtp_ekt_write_data(srtp_ekt_stream_t ekt, uint8_t *base_tag, unsigned base_tag_len, int *packet_len, srtp_xtd_seq_num_t pkt_index) { uint32_t roc; uint16_t isn; unsigned emk_len; uint8_t *packet; /* if the pointer ekt is NULL, then EKT is not in effect */ if (!ekt) { debug_print(mod_srtp, "EKT not in use", NULL); return; } /* write zeros into the location of the base tag */ octet_string_set_to_zero(base_tag, base_tag_len); packet = base_tag + base_tag_len; /* copy encrypted master key into packet */ emk_len = srtp_ekt_octets_after_base_tag(ekt); memcpy(packet, ekt->encrypted_master_key, emk_len); debug_print(mod_srtp, "writing EKT EMK: %s,", srtp_octet_string_hex_string(packet, emk_len)); packet += emk_len; /* copy ROC into packet */ roc = (uint32_t)(pkt_index >> 16); *((uint32_t *)packet) = be32_to_cpu(roc); debug_print(mod_srtp, "writing EKT ROC: %s,", srtp_octet_string_hex_string(packet, sizeof(roc))); packet += sizeof(roc); /* copy ISN into packet */ isn = (uint16_t)pkt_index; *((uint16_t *)packet) = htons(isn); debug_print(mod_srtp, "writing EKT ISN: %s,", srtp_octet_string_hex_string(packet, sizeof(isn))); packet += sizeof(isn); /* copy SPI into packet */ *((uint16_t *)packet) = htons(ekt->data->spi); debug_print(mod_srtp, "writing EKT SPI: %s,", srtp_octet_string_hex_string(packet, sizeof(ekt->data->spi))); /* increase packet length appropriately */ *packet_len += EKT_OCTETS_AFTER_EMK + emk_len; } /* * The function call srtcp_ekt_trailer(ekt, auth_len, auth_tag ) * * If the pointer ekt is NULL, then the other inputs are unaffected. * * auth_tag is a pointer to the pointer to the location of the * authentication tag in the packet. If EKT is in effect, then the * auth_tag pointer is set to the location */ void srtcp_ekt_trailer(srtp_ekt_stream_t ekt, unsigned *auth_len, void **auth_tag, void *tag_copy) { /* * if there is no EKT policy, then the other inputs are unaffected */ if (!ekt) return; /* copy auth_tag into temporary location */ } ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/srtp/srtp.c����������������������������������������0000664�0000000�0000000�00000347717�13041410345�0021722�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * srtp.c * * the secure real-time transport protocol * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include "srtp.h" #include "srtp_priv.h" #include "crypto_types.h" #include "err.h" #include "ekt.h" /* for SRTP Encrypted Key Transport */ #include "alloc.h" /* for srtp_crypto_alloc() */ #ifdef OPENSSL #include "aes_gcm_ossl.h" /* for AES GCM mode */ # ifdef OPENSSL_KDF # include <openssl/kdf.h> # include "aes_icm_ossl.h" /* for AES GCM mode */ # endif #endif #include <limits.h> #ifdef HAVE_NETINET_IN_H # include <netinet/in.h> #elif defined(HAVE_WINSOCK2_H) # include <winsock2.h> #endif /* the debug module for srtp */ srtp_debug_module_t mod_srtp = { 0, /* debugging is off by default */ "srtp" /* printable name for module */ }; #define octets_in_rtp_header 12 #define uint32s_in_rtp_header 3 #define octets_in_rtcp_header 8 #define uint32s_in_rtcp_header 2 #define octets_in_rtp_extn_hdr 4 static srtp_err_status_t srtp_validate_rtp_header(void *rtp_hdr, int *pkt_octet_len) { if (*pkt_octet_len < octets_in_rtp_header) return srtp_err_status_bad_param; srtp_hdr_t *hdr = (srtp_hdr_t *)rtp_hdr; /* Check RTP header length */ int rtp_header_len = octets_in_rtp_header + 4 * hdr->cc; if (hdr->x == 1) rtp_header_len += octets_in_rtp_extn_hdr; if (*pkt_octet_len < rtp_header_len) return srtp_err_status_bad_param; /* Verifing profile length. */ if (hdr->x == 1) { srtp_hdr_xtnd_t *xtn_hdr = (srtp_hdr_xtnd_t *)((uint32_t *)hdr + uint32s_in_rtp_header + hdr->cc); int profile_len = ntohs(xtn_hdr->length); rtp_header_len += profile_len * 4; /* profile length counts the number of 32-bit words */ if (*pkt_octet_len < rtp_header_len) return srtp_err_status_bad_param; } return srtp_err_status_ok; } const char *srtp_get_version_string () { /* * Simply return the autotools generated string */ return SRTP_VER_STRING; } unsigned int srtp_get_version () { unsigned int major = 0, minor = 0, micro = 0; unsigned int rv = 0; int parse_rv; /* * Parse the autotools generated version */ parse_rv = sscanf(SRTP_VERSION, "%u.%u.%u", &major, &minor, &micro); if (parse_rv != 3) { /* * We're expected to parse all 3 version levels. * If not, then this must not be an official release. * Return all zeros on the version */ return (0); } /* * We allow 8 bits for the major and minor, while * allowing 16 bits for the micro. 16 bits for the micro * may be beneficial for a continuous delivery model * in the future. */ rv |= (major & 0xFF) << 24; rv |= (minor & 0xFF) << 16; rv |= micro & 0xFF; return rv; } /* Release (maybe partially allocated) stream. */ static void srtp_stream_free(srtp_stream_ctx_t *str) { if (str->rtp_xtn_hdr_cipher) { srtp_cipher_dealloc(str->rtp_xtn_hdr_cipher); } if (str->enc_xtn_hdr) { srtp_crypto_free(str->enc_xtn_hdr); } if (str->rtcp_auth) { srtp_auth_dealloc(str->rtcp_auth); } if (str->rtcp_cipher) { srtp_cipher_dealloc(str->rtcp_cipher); } if (str->limit) { srtp_crypto_free(str->limit); } if (str->rtp_auth) { srtp_auth_dealloc(str->rtp_auth); } if (str->rtp_cipher) { srtp_cipher_dealloc(str->rtp_cipher); } srtp_crypto_free(str); } srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr, const srtp_policy_t *p) { srtp_stream_ctx_t *str; srtp_err_status_t stat; /* * This function allocates the stream context, rtp and rtcp ciphers * and auth functions, and key limit structure. If there is a * failure during allocation, we free all previously allocated * memory and return a failure code. The code could probably * be improved, but it works and should be clear. */ /* allocate srtp stream and set str_ptr */ str = (srtp_stream_ctx_t *) srtp_crypto_alloc(sizeof(srtp_stream_ctx_t)); if (str == NULL) return srtp_err_status_alloc_fail; memset(str, 0, sizeof(srtp_stream_ctx_t)); *str_ptr = str; /* allocate cipher */ stat = srtp_crypto_kernel_alloc_cipher(p->rtp.cipher_type, &str->rtp_cipher, p->rtp.cipher_key_len, p->rtp.auth_tag_len); if (stat) { srtp_stream_free(str); return stat; } /* allocate auth function */ stat = srtp_crypto_kernel_alloc_auth(p->rtp.auth_type, &str->rtp_auth, p->rtp.auth_key_len, p->rtp.auth_tag_len); if (stat) { srtp_stream_free(str); return stat; } /* allocate key limit structure */ str->limit = (srtp_key_limit_ctx_t*) srtp_crypto_alloc(sizeof(srtp_key_limit_ctx_t)); if (str->limit == NULL) { srtp_stream_free(str); return srtp_err_status_alloc_fail; } /* * ...and now the RTCP-specific initialization - first, allocate * the cipher */ stat = srtp_crypto_kernel_alloc_cipher(p->rtcp.cipher_type, &str->rtcp_cipher, p->rtcp.cipher_key_len, p->rtcp.auth_tag_len); if (stat) { srtp_stream_free(str); return stat; } /* allocate auth function */ stat = srtp_crypto_kernel_alloc_auth(p->rtcp.auth_type, &str->rtcp_auth, p->rtcp.auth_key_len, p->rtcp.auth_tag_len); if (stat) { srtp_stream_free(str); return stat; } /* allocate ekt data associated with stream */ stat = srtp_ekt_alloc(&str->ekt, p->ekt); if (stat) { srtp_stream_free(str); return stat; } if (p->enc_xtn_hdr && p->enc_xtn_hdr_count > 0) { srtp_cipher_type_id_t enc_xtn_hdr_cipher_type; int enc_xtn_hdr_cipher_key_len; str->enc_xtn_hdr = (int*) srtp_crypto_alloc(p->enc_xtn_hdr_count * sizeof(p->enc_xtn_hdr[0])); if (!str->enc_xtn_hdr) { srtp_stream_free(str); return srtp_err_status_alloc_fail; } memcpy(str->enc_xtn_hdr, p->enc_xtn_hdr, p->enc_xtn_hdr_count * sizeof(p->enc_xtn_hdr[0])); str->enc_xtn_hdr_count = p->enc_xtn_hdr_count; /* For GCM ciphers, the corresponding ICM cipher is used for header extensions encryption. */ switch (p->rtp.cipher_type) { case SRTP_AES_128_GCM: enc_xtn_hdr_cipher_type = SRTP_AES_128_ICM; enc_xtn_hdr_cipher_key_len = 30; break; case SRTP_AES_256_GCM: enc_xtn_hdr_cipher_type = SRTP_AES_256_ICM; enc_xtn_hdr_cipher_key_len = 46; break; default: enc_xtn_hdr_cipher_type = p->rtp.cipher_type; enc_xtn_hdr_cipher_key_len = p->rtp.cipher_key_len; break; } /* allocate cipher for extensions header encryption */ stat = srtp_crypto_kernel_alloc_cipher(enc_xtn_hdr_cipher_type, &str->rtp_xtn_hdr_cipher, enc_xtn_hdr_cipher_key_len, 0); if (stat) { srtp_stream_free(str); return stat; } } else { str->rtp_xtn_hdr_cipher = NULL; str->enc_xtn_hdr = NULL; str->enc_xtn_hdr_count = 0; } return srtp_err_status_ok; } srtp_err_status_t srtp_stream_dealloc(srtp_stream_ctx_t *stream, srtp_stream_ctx_t *stream_template) { srtp_err_status_t status; /* * we use a conservative deallocation strategy - if any deallocation * fails, then we report that fact without trying to deallocate * anything else */ /* deallocate cipher, if it is not the same as that in template */ if (stream_template && stream->rtp_cipher == stream_template->rtp_cipher) { /* do nothing */ } else { status = srtp_cipher_dealloc(stream->rtp_cipher); if (status) return status; } /* deallocate auth function, if it is not the same as that in template */ if (stream_template && stream->rtp_auth == stream_template->rtp_auth) { /* do nothing */ } else { status = srtp_auth_dealloc(stream->rtp_auth); if (status) return status; } /* deallocate key usage limit, if it is not the same as that in template */ if (stream_template && stream->limit == stream_template->limit) { /* do nothing */ } else { srtp_crypto_free(stream->limit); } if (stream_template && stream->rtp_xtn_hdr_cipher == stream_template->rtp_xtn_hdr_cipher) { /* do nothing */ } else if (stream->rtp_xtn_hdr_cipher) { status = srtp_cipher_dealloc(stream->rtp_xtn_hdr_cipher); if (status) return status; } /* * deallocate rtcp cipher, if it is not the same as that in * template */ if (stream_template && stream->rtcp_cipher == stream_template->rtcp_cipher) { /* do nothing */ } else { status = srtp_cipher_dealloc(stream->rtcp_cipher); if (status) return status; } /* * deallocate rtcp auth function, if it is not the same as that in * template */ if (stream_template && stream->rtcp_auth == stream_template->rtcp_auth) { /* do nothing */ } else { status = srtp_auth_dealloc(stream->rtcp_auth); if (status) return status; } status = srtp_rdbx_dealloc(&stream->rtp_rdbx); if (status) return status; /* DAM - need to deallocate EKT here */ if (stream_template && stream->enc_xtn_hdr == stream_template->enc_xtn_hdr) { /* do nothing */ } else if (stream->enc_xtn_hdr) { srtp_crypto_free(stream->enc_xtn_hdr); } /* * zeroize the salt value */ memset(stream->salt, 0, SRTP_AEAD_SALT_LEN); memset(stream->c_salt, 0, SRTP_AEAD_SALT_LEN); /* deallocate srtp stream context */ srtp_crypto_free(stream); return srtp_err_status_ok; } /* * srtp_stream_clone(stream_template, new) allocates a new stream and * initializes it using the cipher and auth of the stream_template * * the only unique data in a cloned stream is the replay database and * the SSRC */ srtp_err_status_t srtp_stream_clone(const srtp_stream_ctx_t *stream_template, uint32_t ssrc, srtp_stream_ctx_t **str_ptr) { srtp_err_status_t status; srtp_stream_ctx_t *str; debug_print(mod_srtp, "cloning stream (SSRC: 0x%08x)", ntohl(ssrc)); /* allocate srtp stream and set str_ptr */ str = (srtp_stream_ctx_t *) srtp_crypto_alloc(sizeof(srtp_stream_ctx_t)); if (str == NULL) return srtp_err_status_alloc_fail; *str_ptr = str; /* set cipher and auth pointers to those of the template */ str->rtp_cipher = stream_template->rtp_cipher; str->rtp_auth = stream_template->rtp_auth; str->rtp_xtn_hdr_cipher = stream_template->rtp_xtn_hdr_cipher; str->rtcp_cipher = stream_template->rtcp_cipher; str->rtcp_auth = stream_template->rtcp_auth; /* set key limit to point to that of the template */ status = srtp_key_limit_clone(stream_template->limit, &str->limit); if (status) { srtp_crypto_free(*str_ptr); *str_ptr = NULL; return status; } /* initialize replay databases */ status = srtp_rdbx_init(&str->rtp_rdbx, srtp_rdbx_get_window_size(&stream_template->rtp_rdbx)); if (status) { srtp_crypto_free(*str_ptr); *str_ptr = NULL; return status; } srtp_rdb_init(&str->rtcp_rdb); str->allow_repeat_tx = stream_template->allow_repeat_tx; /* set ssrc to that provided */ str->ssrc = ssrc; /* set direction and security services */ str->direction = stream_template->direction; str->rtp_services = stream_template->rtp_services; str->rtcp_services = stream_template->rtcp_services; /* set pointer to EKT data associated with stream */ str->ekt = stream_template->ekt; /* Copy the salt values */ memcpy(str->salt, stream_template->salt, SRTP_AEAD_SALT_LEN); memcpy(str->c_salt, stream_template->c_salt, SRTP_AEAD_SALT_LEN); /* copy information about extensions header encryption */ str->enc_xtn_hdr = stream_template->enc_xtn_hdr; str->enc_xtn_hdr_count = stream_template->enc_xtn_hdr_count; /* defensive coding */ str->next = NULL; return srtp_err_status_ok; } /* * key derivation functions, internal to libSRTP * * srtp_kdf_t is a key derivation context * * srtp_kdf_init(&kdf, cipher_id, k, keylen) initializes kdf to use cipher * described by cipher_id, with the master key k with length in octets keylen. * * srtp_kdf_generate(&kdf, l, kl, keylen) derives the key * corresponding to label l and puts it into kl; the length * of the key in octets is provided as keylen. this function * should be called once for each subkey that is derived. * * srtp_kdf_clear(&kdf) zeroizes and deallocates the kdf state */ typedef enum { label_rtp_encryption = 0x00, label_rtp_msg_auth = 0x01, label_rtp_salt = 0x02, label_rtcp_encryption = 0x03, label_rtcp_msg_auth = 0x04, label_rtcp_salt = 0x05, label_rtp_header_encryption = 0x06, label_rtp_header_salt = 0x07 } srtp_prf_label; #define MAX_SRTP_KEY_LEN 256 #if defined(OPENSSL) && defined(OPENSSL_KDF) #define MAX_SRTP_AESKEY_LEN 32 #define MAX_SRTP_SALT_LEN 14 /* * srtp_kdf_t represents a key derivation function. The SRTP * default KDF is the only one implemented at present. */ typedef struct { uint8_t master_key[MAX_SRTP_AESKEY_LEN]; uint8_t master_salt[MAX_SRTP_SALT_LEN]; const EVP_CIPHER *evp; } srtp_kdf_t; static srtp_err_status_t srtp_kdf_init(srtp_kdf_t *kdf, const uint8_t *key, int key_len, int salt_len) { memset(kdf, 0x0, sizeof(srtp_kdf_t)); /* The NULL cipher has zero key length */ if (key_len == 0) return srtp_err_status_ok; if ((key_len > MAX_SRTP_AESKEY_LEN) || (salt_len > MAX_SRTP_SALT_LEN)) { return srtp_err_status_bad_param; } switch (key_len) { case SRTP_AES_256_KEYSIZE: kdf->evp = EVP_aes_256_ctr(); break; case SRTP_AES_192_KEYSIZE: kdf->evp = EVP_aes_192_ctr(); break; case SRTP_AES_128_KEYSIZE: kdf->evp = EVP_aes_128_ctr(); break; default: return srtp_err_status_bad_param; break; } memcpy(kdf->master_key, key, key_len); memcpy(kdf->master_salt, key+key_len, salt_len); return srtp_err_status_ok; } static srtp_err_status_t srtp_kdf_generate(srtp_kdf_t *kdf, srtp_prf_label label, uint8_t *key, unsigned int length) { int ret; /* The NULL cipher will not have an EVP */ if (!kdf->evp) return srtp_err_status_ok; octet_string_set_to_zero(key, length); /* * Invoke the OpenSSL SRTP KDF function * This is useful if OpenSSL is in FIPS mode and FIP * compliance is required for SRTP. */ ret = kdf_srtp(kdf->evp, (char *)&kdf->master_key, (char *)&kdf->master_salt, NULL, NULL, label, (char *)key); if (ret == -1) { return (srtp_err_status_algo_fail); } return srtp_err_status_ok; } static srtp_err_status_t srtp_kdf_clear(srtp_kdf_t *kdf) { memset(kdf->master_key, 0x0, MAX_SRTP_AESKEY_LEN); memset(kdf->master_salt, 0x0, MAX_SRTP_SALT_LEN); kdf->evp = NULL; return srtp_err_status_ok; } #else /* if OPENSSL_KDF */ /* * srtp_kdf_t represents a key derivation function. The SRTP * default KDF is the only one implemented at present. */ typedef struct { srtp_cipher_t *cipher; /* cipher used for key derivation */ } srtp_kdf_t; static srtp_err_status_t srtp_kdf_init(srtp_kdf_t *kdf, srtp_cipher_type_id_t cipher_id, const uint8_t *key, int length) { srtp_err_status_t stat; stat = srtp_crypto_kernel_alloc_cipher(cipher_id, &kdf->cipher, length, 0); if (stat) return stat; stat = srtp_cipher_init(kdf->cipher, key); if (stat) { srtp_cipher_dealloc(kdf->cipher); return stat; } return srtp_err_status_ok; } static srtp_err_status_t srtp_kdf_generate(srtp_kdf_t *kdf, srtp_prf_label label, uint8_t *key, unsigned int length) { srtp_err_status_t status; v128_t nonce; /* set eigth octet of nonce to <label>, set the rest of it to zero */ v128_set_to_zero(&nonce); nonce.v8[7] = label; status = srtp_cipher_set_iv(kdf->cipher, (uint8_t*)&nonce, srtp_direction_encrypt); if (status) return status; /* generate keystream output */ octet_string_set_to_zero(key, length); status = srtp_cipher_encrypt(kdf->cipher, key, &length); if (status) return status; return srtp_err_status_ok; } static srtp_err_status_t srtp_kdf_clear(srtp_kdf_t *kdf) { srtp_err_status_t status; status = srtp_cipher_dealloc(kdf->cipher); if (status) return status; kdf->cipher = NULL; return srtp_err_status_ok; } #endif /* else OPENSSL_KDF */ /* * end of key derivation functions */ /* Get the base key length corresponding to a given combined key+salt * length for the given cipher. * Assumption is that for AES-ICM a key length < 30 is Ismacryp using * AES-128 and short salts; everything else uses a salt length of 14. * TODO: key and salt lengths should be separate fields in the policy. */ static inline int base_key_length(const srtp_cipher_type_t *cipher, int key_length) { switch (cipher->id) { case SRTP_AES_128_ICM: case SRTP_AES_192_ICM: case SRTP_AES_256_ICM: /* The legacy modes are derived from * the configured key length on the policy */ return key_length - 14; break; case SRTP_AES_128_GCM: return 16; break; case SRTP_AES_256_GCM: return 32; break; default: return key_length; break; } } srtp_err_status_t srtp_stream_init_keys(srtp_stream_ctx_t *srtp, const void *key) { srtp_err_status_t stat; srtp_kdf_t kdf; uint8_t tmp_key[MAX_SRTP_KEY_LEN]; int kdf_keylen = 30, rtp_keylen, rtcp_keylen; int rtp_base_key_len, rtp_salt_len; int rtcp_base_key_len, rtcp_salt_len; /* If RTP or RTCP have a key length > AES-128, assume matching kdf. */ /* TODO: kdf algorithm, master key length, and master salt length should * be part of srtp_policy_t. */ rtp_keylen = srtp_cipher_get_key_length(srtp->rtp_cipher); rtcp_keylen = srtp_cipher_get_key_length(srtp->rtcp_cipher); rtp_base_key_len = base_key_length(srtp->rtp_cipher->type, rtp_keylen); rtp_salt_len = rtp_keylen - rtp_base_key_len; if (rtp_keylen > kdf_keylen) { kdf_keylen = 46; /* AES-CTR mode is always used for KDF */ } if (rtcp_keylen > kdf_keylen) { kdf_keylen = 46; /* AES-CTR mode is always used for KDF */ } debug_print(mod_srtp, "srtp key len: %d", rtp_keylen); debug_print(mod_srtp, "srtcp key len: %d", rtcp_keylen); debug_print(mod_srtp, "base key len: %d", rtp_base_key_len); debug_print(mod_srtp, "kdf key len: %d", kdf_keylen); debug_print(mod_srtp, "rtp salt len: %d", rtp_salt_len); /* * Make sure the key given to us is 'zero' appended. GCM * mode uses a shorter master SALT (96 bits), but still relies on * the legacy CTR mode KDF, which uses a 112 bit master SALT. */ memset(tmp_key, 0x0, MAX_SRTP_KEY_LEN); memcpy(tmp_key, key, (rtp_base_key_len + rtp_salt_len)); /* initialize KDF state */ #if defined(OPENSSL) && defined(OPENSSL_KDF) stat = srtp_kdf_init(&kdf, (const uint8_t *)tmp_key, rtp_base_key_len, rtp_salt_len); #else stat = srtp_kdf_init(&kdf, SRTP_AES_ICM, (const uint8_t *)tmp_key, kdf_keylen); #endif if (stat) { return srtp_err_status_init_fail; } /* generate encryption key */ stat = srtp_kdf_generate(&kdf, label_rtp_encryption, tmp_key, rtp_base_key_len); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } debug_print(mod_srtp, "cipher key: %s", srtp_octet_string_hex_string(tmp_key, rtp_base_key_len)); /* * if the cipher in the srtp context uses a salt, then we need * to generate the salt value */ if (rtp_salt_len > 0) { debug_print(mod_srtp, "found rtp_salt_len > 0, generating salt", NULL); /* generate encryption salt, put after encryption key */ stat = srtp_kdf_generate(&kdf, label_rtp_salt, tmp_key + rtp_base_key_len, rtp_salt_len); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } memcpy(srtp->salt, tmp_key + rtp_base_key_len, SRTP_AEAD_SALT_LEN); } if (rtp_salt_len > 0) { debug_print(mod_srtp, "cipher salt: %s", srtp_octet_string_hex_string(tmp_key + rtp_base_key_len, rtp_salt_len)); } /* initialize cipher */ stat = srtp_cipher_init(srtp->rtp_cipher, tmp_key); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } if (srtp->rtp_xtn_hdr_cipher) { /* generate extensions header encryption key */ int rtp_xtn_hdr_keylen; int rtp_xtn_hdr_base_key_len; int rtp_xtn_hdr_salt_len; srtp_kdf_t tmp_kdf; srtp_kdf_t *xtn_hdr_kdf; if (srtp->rtp_xtn_hdr_cipher->type != srtp->rtp_cipher->type) { /* With GCM ciphers, the header extensions are still encrypted using the corresponding ICM cipher. */ /* See https://tools.ietf.org/html/draft-ietf-avtcore-srtp-aes-gcm-17#section-8.3 */ uint8_t tmp_xtn_hdr_key[MAX_SRTP_KEY_LEN]; rtp_xtn_hdr_keylen = srtp_cipher_get_key_length(srtp->rtp_xtn_hdr_cipher); rtp_xtn_hdr_base_key_len = base_key_length(srtp->rtp_xtn_hdr_cipher->type, rtp_xtn_hdr_keylen); rtp_xtn_hdr_salt_len = rtp_xtn_hdr_keylen - rtp_xtn_hdr_base_key_len; memset(tmp_xtn_hdr_key, 0x0, MAX_SRTP_KEY_LEN); memcpy(tmp_xtn_hdr_key, key, (rtp_xtn_hdr_base_key_len + rtp_xtn_hdr_salt_len)); xtn_hdr_kdf = &tmp_kdf; /* initialize KDF state */ #if defined(OPENSSL) && defined(OPENSSL_KDF) stat = srtp_kdf_init(xtn_hdr_kdf, (const uint8_t *)tmp_xtn_hdr_key, rtp_xtn_hdr_base_key_len, rtp_xtn_hdr_salt_len); #else stat = srtp_kdf_init(xtn_hdr_kdf, SRTP_AES_ICM, (const uint8_t *)tmp_xtn_hdr_key, kdf_keylen); #endif octet_string_set_to_zero(tmp_xtn_hdr_key, MAX_SRTP_KEY_LEN); if (stat) { return srtp_err_status_init_fail; } } else { /* Reuse main KDF. */ rtp_xtn_hdr_keylen = rtp_keylen; rtp_xtn_hdr_base_key_len = rtp_base_key_len; rtp_xtn_hdr_salt_len = rtp_salt_len; xtn_hdr_kdf = &kdf; } stat = srtp_kdf_generate(xtn_hdr_kdf, label_rtp_header_encryption, tmp_key, rtp_xtn_hdr_base_key_len); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } debug_print(mod_srtp, "extensions cipher key: %s", srtp_octet_string_hex_string(tmp_key, rtp_xtn_hdr_base_key_len)); /* * if the cipher in the srtp context uses a salt, then we need * to generate the salt value */ if (rtp_xtn_hdr_salt_len > 0) { debug_print(mod_srtp, "found rtp_xtn_hdr_salt_len > 0, generating salt", NULL); /* generate encryption salt, put after encryption key */ stat = srtp_kdf_generate(xtn_hdr_kdf, label_rtp_header_salt, tmp_key + rtp_xtn_hdr_base_key_len, rtp_xtn_hdr_salt_len); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } } if (rtp_xtn_hdr_salt_len > 0) { debug_print(mod_srtp, "extensions cipher salt: %s", srtp_octet_string_hex_string(tmp_key + rtp_xtn_hdr_base_key_len, rtp_xtn_hdr_salt_len)); } /* initialize extensions header cipher */ stat = srtp_cipher_init(srtp->rtp_xtn_hdr_cipher, tmp_key); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } if (xtn_hdr_kdf != &kdf) { /* release memory for custom header extension encryption kdf */ stat = srtp_kdf_clear(xtn_hdr_kdf); if (stat) { octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } } } /* generate authentication key */ stat = srtp_kdf_generate(&kdf, label_rtp_msg_auth, tmp_key, srtp_auth_get_key_length(srtp->rtp_auth)); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } debug_print(mod_srtp, "auth key: %s", srtp_octet_string_hex_string(tmp_key, srtp_auth_get_key_length(srtp->rtp_auth))); /* initialize auth function */ stat = srtp_auth_init(srtp->rtp_auth, tmp_key); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } /* * ...now initialize SRTCP keys */ rtcp_base_key_len = base_key_length(srtp->rtcp_cipher->type, rtcp_keylen); rtcp_salt_len = rtcp_keylen - rtcp_base_key_len; debug_print(mod_srtp, "rtcp salt len: %d", rtcp_salt_len); /* generate encryption key */ stat = srtp_kdf_generate(&kdf, label_rtcp_encryption, tmp_key, rtcp_base_key_len); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } /* * if the cipher in the srtp context uses a salt, then we need * to generate the salt value */ if (rtcp_salt_len > 0) { debug_print(mod_srtp, "found rtcp_salt_len > 0, generating rtcp salt", NULL); /* generate encryption salt, put after encryption key */ stat = srtp_kdf_generate(&kdf, label_rtcp_salt, tmp_key + rtcp_base_key_len, rtcp_salt_len); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } memcpy(srtp->c_salt, tmp_key + rtcp_base_key_len, SRTP_AEAD_SALT_LEN); } debug_print(mod_srtp, "rtcp cipher key: %s", srtp_octet_string_hex_string(tmp_key, rtcp_base_key_len)); if (rtcp_salt_len > 0) { debug_print(mod_srtp, "rtcp cipher salt: %s", srtp_octet_string_hex_string(tmp_key + rtcp_base_key_len, rtcp_salt_len)); } /* initialize cipher */ stat = srtp_cipher_init(srtp->rtcp_cipher, tmp_key); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } /* generate authentication key */ stat = srtp_kdf_generate(&kdf, label_rtcp_msg_auth, tmp_key, srtp_auth_get_key_length(srtp->rtcp_auth)); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } debug_print(mod_srtp, "rtcp auth key: %s", srtp_octet_string_hex_string(tmp_key, srtp_auth_get_key_length(srtp->rtcp_auth))); /* initialize auth function */ stat = srtp_auth_init(srtp->rtcp_auth, tmp_key); if (stat) { /* zeroize temp buffer */ octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); return srtp_err_status_init_fail; } /* clear memory then return */ stat = srtp_kdf_clear(&kdf); octet_string_set_to_zero(tmp_key, MAX_SRTP_KEY_LEN); if (stat) return srtp_err_status_init_fail; return srtp_err_status_ok; } srtp_err_status_t srtp_stream_init(srtp_stream_ctx_t *srtp, const srtp_policy_t *p) { srtp_err_status_t err; debug_print(mod_srtp, "initializing stream (SSRC: 0x%08x)", p->ssrc.value); /* initialize replay database */ /* window size MUST be at least 64. MAY be larger. Values more than * 2^15 aren't meaningful due to how extended sequence numbers are * calculated. Let a window size of 0 imply the default value. */ if (p->window_size != 0 && (p->window_size < 64 || p->window_size >= 0x8000)) return srtp_err_status_bad_param; if (p->window_size != 0) err = srtp_rdbx_init(&srtp->rtp_rdbx, p->window_size); else err = srtp_rdbx_init(&srtp->rtp_rdbx, 128); if (err) return err; /* initialize key limit to maximum value */ #ifdef NO_64BIT_MATH { uint64_t temp; temp = make64(UINT_MAX,UINT_MAX); srtp_key_limit_set(srtp->limit, temp); } #else srtp_key_limit_set(srtp->limit, 0xffffffffffffLL); #endif /* set the SSRC value */ srtp->ssrc = htonl(p->ssrc.value); /* set the security service flags */ srtp->rtp_services = p->rtp.sec_serv; srtp->rtcp_services = p->rtcp.sec_serv; /* * set direction to unknown - this flag gets checked in srtp_protect(), * srtp_unprotect(), srtp_protect_rtcp(), and srtp_unprotect_rtcp(), and * gets set appropriately if it is set to unknown. */ srtp->direction = dir_unknown; /* initialize SRTCP replay database */ srtp_rdb_init(&srtp->rtcp_rdb); /* initialize allow_repeat_tx */ /* guard against uninitialized memory: allow only 0 or 1 here */ if (p->allow_repeat_tx != 0 && p->allow_repeat_tx != 1) { srtp_rdbx_dealloc(&srtp->rtp_rdbx); return srtp_err_status_bad_param; } srtp->allow_repeat_tx = p->allow_repeat_tx; /* DAM - no RTCP key limit at present */ /* initialize keys */ err = srtp_stream_init_keys(srtp, p->key); if (err) { srtp_rdbx_dealloc(&srtp->rtp_rdbx); return err; } /* * if EKT is in use, then initialize the EKT data associated with * the stream */ err = srtp_ekt_stream_init_from_policy(srtp->ekt, p->ekt); if (err) { srtp_rdbx_dealloc(&srtp->rtp_rdbx); return err; } return srtp_err_status_ok; } /* * srtp_event_reporter is an event handler function that merely * reports the events that are reported by the callbacks */ void srtp_event_reporter(srtp_event_data_t *data) { srtp_err_report(srtp_err_level_warning, "srtp: in stream 0x%x: ", data->stream->ssrc); switch(data->event) { case event_ssrc_collision: srtp_err_report(srtp_err_level_warning, "\tSSRC collision\n"); break; case event_key_soft_limit: srtp_err_report(srtp_err_level_warning, "\tkey usage soft limit reached\n"); break; case event_key_hard_limit: srtp_err_report(srtp_err_level_warning, "\tkey usage hard limit reached\n"); break; case event_packet_index_limit: srtp_err_report(srtp_err_level_warning, "\tpacket index limit reached\n"); break; default: srtp_err_report(srtp_err_level_warning, "\tunknown event reported to handler\n"); } } /* * srtp_event_handler is a global variable holding a pointer to the * event handler function; this function is called for any unexpected * event that needs to be handled out of the SRTP data path. see * srtp_event_t in srtp.h for more info * * it is okay to set srtp_event_handler to NULL, but we set * it to the srtp_event_reporter. */ static srtp_event_handler_func_t *srtp_event_handler = srtp_event_reporter; srtp_err_status_t srtp_install_event_handler(srtp_event_handler_func_t func) { /* * note that we accept NULL arguments intentionally - calling this * function with a NULL arguments removes an event handler that's * been previously installed */ /* set global event handling function */ srtp_event_handler = func; return srtp_err_status_ok; } /* * Check if the given extension header id is / should be encrypted. * Returns 1 if yes, otherwise 0. */ static int srtp_protect_extension_header(srtp_stream_ctx_t *stream, int id) { int* enc_xtn_hdr = stream->enc_xtn_hdr; int count = stream->enc_xtn_hdr_count; if (!enc_xtn_hdr || count <= 0) { return 0; } while (count > 0) { if (*enc_xtn_hdr == id) { return 1; } enc_xtn_hdr++; count--; } return 0; } /* * extensions header encryption RFC 6904 */ static srtp_err_status_t srtp_process_header_encryption(srtp_stream_ctx_t *stream, srtp_hdr_xtnd_t *xtn_hdr) { srtp_err_status_t status; uint8_t keystream[257]; /* Maximum 2 bytes header + 255 bytes data. */ int keystream_pos; uint8_t* xtn_hdr_data = ((uint8_t *)xtn_hdr) + octets_in_rtp_extn_hdr; uint8_t* xtn_hdr_end = xtn_hdr_data + (ntohs(xtn_hdr->length) * sizeof(uint32_t)); if (ntohs(xtn_hdr->profile_specific) == 0xbede) { /* RFC 5285, section 4.2. One-Byte Header */ while (xtn_hdr_data < xtn_hdr_end) { uint8_t xid = (*xtn_hdr_data & 0xf0) >> 4; unsigned int xlen = (*xtn_hdr_data & 0x0f) + 1; uint32_t xlen_with_header = 1+xlen; xtn_hdr_data++; if (xtn_hdr_data + xlen > xtn_hdr_end) return srtp_err_status_parse_err; if (xid == 15) { /* found header 15, stop further processing. */ break; } status = srtp_cipher_output(stream->rtp_xtn_hdr_cipher, keystream, &xlen_with_header); if (status) return srtp_err_status_cipher_fail; if (srtp_protect_extension_header(stream, xid)) { keystream_pos = 1; while (xlen > 0) { *xtn_hdr_data ^= keystream[keystream_pos++]; xtn_hdr_data++; xlen--; } } else { xtn_hdr_data += xlen; } /* skip padding bytes. */ while (xtn_hdr_data < xtn_hdr_end && *xtn_hdr_data == 0) { xtn_hdr_data++; } } } else if ((ntohs(xtn_hdr->profile_specific) & 0x1fff) == 0x100) { /* RFC 5285, section 4.3. Two-Byte Header */ while (xtn_hdr_data + 1 < xtn_hdr_end) { uint8_t xid = *xtn_hdr_data; unsigned int xlen = *(xtn_hdr_data+1); uint32_t xlen_with_header = 2+xlen; xtn_hdr_data += 2; if (xtn_hdr_data + xlen > xtn_hdr_end) return srtp_err_status_parse_err; status = srtp_cipher_output(stream->rtp_xtn_hdr_cipher, keystream, &xlen_with_header); if (status) return srtp_err_status_cipher_fail; if (xlen > 0 && srtp_protect_extension_header(stream, xid)) { keystream_pos = 2; while (xlen > 0) { *xtn_hdr_data ^= keystream[keystream_pos++]; xtn_hdr_data++; xlen--; } } else { xtn_hdr_data += xlen; } /* skip padding bytes. */ while (xtn_hdr_data < xtn_hdr_end && *xtn_hdr_data == 0) { xtn_hdr_data++; } } } else { /* unsupported extension header format. */ return srtp_err_status_parse_err; } return srtp_err_status_ok; } /* * AEAD uses a new IV formation method. This function implements * section 9.1 from draft-ietf-avtcore-srtp-aes-gcm-07.txt. The * calculation is defined as, where (+) is the xor operation: * * * 0 0 0 0 0 0 0 0 0 0 1 1 * 0 1 2 3 4 5 6 7 8 9 0 1 * +--+--+--+--+--+--+--+--+--+--+--+--+ * |00|00| SSRC | ROC | SEQ |---+ * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | Encryption Salt |->(+) * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | Initialization Vector |<--+ * +--+--+--+--+--+--+--+--+--+--+--+--+* * * Input: *stream - pointer to SRTP stream context, used to retrieve * the SALT * *iv - Pointer to receive the calculated IV * *seq - The ROC and SEQ value to use for the * IV calculation. * *hdr - The RTP header, used to get the SSRC value * */ static void srtp_calc_aead_iv(srtp_stream_ctx_t *stream, v128_t *iv, srtp_xtd_seq_num_t *seq, srtp_hdr_t *hdr) { v128_t in; v128_t salt; #ifdef NO_64BIT_MATH uint32_t local_roc = ((high32(*seq) << 16) | (low32(*seq) >> 16)); uint16_t local_seq = (uint16_t) (low32(*seq)); #else uint32_t local_roc = (uint32_t)(*seq >> 16); uint16_t local_seq = (uint16_t) *seq; #endif memset(&in, 0, sizeof(v128_t)); memset(&salt, 0, sizeof(v128_t)); in.v16[5] = htons(local_seq); local_roc = htonl(local_roc); memcpy(&in.v16[3], &local_roc, sizeof(local_roc)); /* * Copy in the RTP SSRC value */ memcpy(&in.v8[2], &hdr->ssrc, 4); debug_print(mod_srtp, "Pre-salted RTP IV = %s\n", v128_hex_string(&in)); /* * Get the SALT value from the context */ memcpy(salt.v8, stream->salt, SRTP_AEAD_SALT_LEN); debug_print(mod_srtp, "RTP SALT = %s\n", v128_hex_string(&salt)); /* * Finally, apply tyhe SALT to the input */ v128_xor(iv, &in, &salt); } /* * This function handles outgoing SRTP packets while in AEAD mode, * which currently supports AES-GCM encryption. All packets are * encrypted and authenticated. */ static srtp_err_status_t srtp_protect_aead (srtp_ctx_t *ctx, srtp_stream_ctx_t *stream, void *rtp_hdr, unsigned int *pkt_octet_len) { srtp_hdr_t *hdr = (srtp_hdr_t*)rtp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ int enc_octet_len = 0; /* number of octets in encrypted portion */ srtp_xtd_seq_num_t est; /* estimated xtd_seq_num_t of *hdr */ int delta; /* delta of local pkt idx and that in hdr */ srtp_err_status_t status; uint32_t tag_len; v128_t iv; unsigned int aad_len; srtp_hdr_xtnd_t *xtn_hdr = NULL; debug_print(mod_srtp, "function srtp_protect_aead", NULL); /* * update the key usage limit, and check it to make sure that we * didn't just hit either the soft limit or the hard limit, and call * the event handler if we hit either. */ switch (srtp_key_limit_update(stream->limit)) { case srtp_key_event_normal: break; case srtp_key_event_hard_limit: srtp_handle_event(ctx, stream, event_key_hard_limit); return srtp_err_status_key_expired; case srtp_key_event_soft_limit: default: srtp_handle_event(ctx, stream, event_key_soft_limit); break; } /* get tag length from stream */ tag_len = srtp_auth_get_tag_length(stream->rtp_auth); /* * find starting point for encryption and length of data to be * encrypted - the encrypted portion starts after the rtp header * extension, if present; otherwise, it starts after the last csrc, * if any are present */ enc_start = (uint32_t*)hdr + uint32s_in_rtp_header + hdr->cc; if (hdr->x == 1) { xtn_hdr = (srtp_hdr_xtnd_t*)enc_start; enc_start += (ntohs(xtn_hdr->length) + 1); } /* note: the passed size is without the auth tag */ if (!((uint8_t*)enc_start <= (uint8_t*)hdr + *pkt_octet_len)) return srtp_err_status_parse_err; enc_octet_len = (int)(*pkt_octet_len - ((uint8_t*)enc_start - (uint8_t*)hdr)); if (enc_octet_len < 0) return srtp_err_status_parse_err; /* * estimate the packet index using the start of the replay window * and the sequence number from the header */ delta = srtp_rdbx_estimate_index(&stream->rtp_rdbx, &est, ntohs(hdr->seq)); status = srtp_rdbx_check(&stream->rtp_rdbx, delta); if (status) { if (status != srtp_err_status_replay_fail || !stream->allow_repeat_tx) { return status; /* we've been asked to reuse an index */ } } else { srtp_rdbx_add_index(&stream->rtp_rdbx, delta); } #ifdef NO_64BIT_MATH debug_print2(mod_srtp, "estimated packet index: %08x%08x", high32(est), low32(est)); #else debug_print(mod_srtp, "estimated packet index: %016llx", est); #endif /* * AEAD uses a new IV formation method */ srtp_calc_aead_iv(stream, &iv, &est, hdr); /* shift est, put into network byte order */ #ifdef NO_64BIT_MATH est = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16), low32(est) << 16)); #else est = be64_to_cpu(est << 16); #endif status = srtp_cipher_set_iv(stream->rtp_cipher, (uint8_t*)&iv, srtp_direction_encrypt); if (!status && stream->rtp_xtn_hdr_cipher) { iv.v32[0] = 0; iv.v32[1] = hdr->ssrc; iv.v64[1] = est; status = srtp_cipher_set_iv(stream->rtp_xtn_hdr_cipher, (uint8_t*)&iv, srtp_direction_encrypt); } if (status) { return srtp_err_status_cipher_fail; } if (xtn_hdr && stream->rtp_xtn_hdr_cipher) { /* * extensions header encryption RFC 6904 */ status = srtp_process_header_encryption(stream, xtn_hdr); if (status) { return status; } } /* * Set the AAD over the RTP header */ aad_len = (uint8_t *)enc_start - (uint8_t *)hdr; status = srtp_cipher_set_aad(stream->rtp_cipher, (uint8_t*)hdr, aad_len); if (status) { return ( srtp_err_status_cipher_fail); } /* Encrypt the payload */ status = srtp_cipher_encrypt(stream->rtp_cipher, (uint8_t*)enc_start, (unsigned int *)&enc_octet_len); if (status) { return srtp_err_status_cipher_fail; } /* * If we're doing GCM, we need to get the tag * and append that to the output */ status = srtp_cipher_get_tag(stream->rtp_cipher, (uint8_t*)enc_start+enc_octet_len, &tag_len); if (status) { return ( srtp_err_status_cipher_fail); } /* increase the packet length by the length of the auth tag */ *pkt_octet_len += tag_len; return srtp_err_status_ok; } /* * This function handles incoming SRTP packets while in AEAD mode, * which currently supports AES-GCM encryption. All packets are * encrypted and authenticated. Note, the auth tag is at the end * of the packet stream and is automatically checked by GCM * when decrypting the payload. */ static srtp_err_status_t srtp_unprotect_aead (srtp_ctx_t *ctx, srtp_stream_ctx_t *stream, int delta, srtp_xtd_seq_num_t est, void *srtp_hdr, unsigned int *pkt_octet_len) { srtp_hdr_t *hdr = (srtp_hdr_t*)srtp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */ v128_t iv; srtp_err_status_t status; int tag_len; unsigned int aad_len; srtp_hdr_xtnd_t *xtn_hdr = NULL; debug_print(mod_srtp, "function srtp_unprotect_aead", NULL); #ifdef NO_64BIT_MATH debug_print2(mod_srtp, "estimated u_packet index: %08x%08x", high32(est), low32(est)); #else debug_print(mod_srtp, "estimated u_packet index: %016llx", est); #endif /* get tag length from stream */ tag_len = srtp_auth_get_tag_length(stream->rtp_auth); /* * AEAD uses a new IV formation method */ srtp_calc_aead_iv(stream, &iv, &est, hdr); status = srtp_cipher_set_iv(stream->rtp_cipher, (uint8_t*)&iv, srtp_direction_decrypt); if (!status && stream->rtp_xtn_hdr_cipher) { iv.v32[0] = 0; iv.v32[1] = hdr->ssrc; #ifdef NO_64BIT_MATH iv.v64[1] = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16), low32(est) << 16)); #else iv.v64[1] = be64_to_cpu(est << 16); #endif status = srtp_cipher_set_iv(stream->rtp_xtn_hdr_cipher, (uint8_t*)&iv, srtp_direction_encrypt); } if (status) { return srtp_err_status_cipher_fail; } /* * find starting point for decryption and length of data to be * decrypted - the encrypted portion starts after the rtp header * extension, if present; otherwise, it starts after the last csrc, * if any are present */ enc_start = (uint32_t*)hdr + uint32s_in_rtp_header + hdr->cc; if (hdr->x == 1) { xtn_hdr = (srtp_hdr_xtnd_t*)enc_start; enc_start += (ntohs(xtn_hdr->length) + 1); } if (!((uint8_t*)enc_start <= (uint8_t*)hdr + (*pkt_octet_len - tag_len))) return srtp_err_status_parse_err; /* * We pass the tag down to the cipher when doing GCM mode */ enc_octet_len = (unsigned int)(*pkt_octet_len - ((uint8_t*)enc_start - (uint8_t*)hdr)); /* * Sanity check the encrypted payload length against * the tag size. It must always be at least as large * as the tag length. */ if (enc_octet_len < (unsigned int) tag_len) { return srtp_err_status_cipher_fail; } /* * update the key usage limit, and check it to make sure that we * didn't just hit either the soft limit or the hard limit, and call * the event handler if we hit either. */ switch (srtp_key_limit_update(stream->limit)) { case srtp_key_event_normal: break; case srtp_key_event_soft_limit: srtp_handle_event(ctx, stream, event_key_soft_limit); break; case srtp_key_event_hard_limit: srtp_handle_event(ctx, stream, event_key_hard_limit); return srtp_err_status_key_expired; default: break; } /* * Set the AAD for AES-GCM, which is the RTP header */ aad_len = (uint8_t *)enc_start - (uint8_t *)hdr; status = srtp_cipher_set_aad(stream->rtp_cipher, (uint8_t*)hdr, aad_len); if (status) { return ( srtp_err_status_cipher_fail); } /* Decrypt the ciphertext. This also checks the auth tag based * on the AAD we just specified above */ status = srtp_cipher_decrypt(stream->rtp_cipher, (uint8_t*)enc_start, &enc_octet_len); if (status) { return status; } if (xtn_hdr && stream->rtp_xtn_hdr_cipher) { /* * extensions header encryption RFC 6904 */ status = srtp_process_header_encryption(stream, xtn_hdr); if (status) { return status; } } /* * verify that stream is for received traffic - this check will * detect SSRC collisions, since a stream that appears in both * srtp_protect() and srtp_unprotect() will fail this test in one of * those functions. * * we do this check *after* the authentication check, so that the * latter check will catch any attempts to fool us into thinking * that we've got a collision */ if (stream->direction != dir_srtp_receiver) { if (stream->direction == dir_unknown) { stream->direction = dir_srtp_receiver; } else { srtp_handle_event(ctx, stream, event_ssrc_collision); } } /* * if the stream is a 'provisional' one, in which the template context * is used, then we need to allocate a new stream at this point, since * the authentication passed */ if (stream == ctx->stream_template) { srtp_stream_ctx_t *new_stream; /* * allocate and initialize a new stream * * note that we indicate failure if we can't allocate the new * stream, and some implementations will want to not return * failure here */ status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); if (status) { return status; } /* add new stream to the head of the stream_list */ new_stream->next = ctx->stream_list; ctx->stream_list = new_stream; /* set stream (the pointer used in this function) */ stream = new_stream; } /* * the message authentication function passed, so add the packet * index into the replay database */ srtp_rdbx_add_index(&stream->rtp_rdbx, delta); /* decrease the packet length by the length of the auth tag */ *pkt_octet_len -= tag_len; return srtp_err_status_ok; } srtp_err_status_t srtp_protect(srtp_ctx_t *ctx, void *rtp_hdr, int *pkt_octet_len) { srtp_hdr_t *hdr = (srtp_hdr_t *)rtp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ uint32_t *auth_start; /* pointer to start of auth. portion */ int enc_octet_len = 0; /* number of octets in encrypted portion */ srtp_xtd_seq_num_t est; /* estimated xtd_seq_num_t of *hdr */ int delta; /* delta of local pkt idx and that in hdr */ uint8_t *auth_tag = NULL; /* location of auth_tag within packet */ srtp_err_status_t status; int tag_len; srtp_stream_ctx_t *stream; uint32_t prefix_len; srtp_hdr_xtnd_t *xtn_hdr = NULL; debug_print(mod_srtp, "function srtp_protect", NULL); /* we assume the hdr is 32-bit aligned to start */ /* Verify RTP header */ status = srtp_validate_rtp_header(rtp_hdr, pkt_octet_len); if (status) return status; /* check the packet length - it must at least contain a full header */ if (*pkt_octet_len < octets_in_rtp_header) return srtp_err_status_bad_param; /* * look up ssrc in srtp_stream list, and process the packet with * the appropriate stream. if we haven't seen this stream before, * there's a template key for this srtp_session, and the cipher * supports key-sharing, then we assume that a new stream using * that key has just started up */ stream = srtp_get_stream(ctx, hdr->ssrc); if (stream == NULL) { if (ctx->stream_template != NULL) { srtp_stream_ctx_t *new_stream; /* allocate and initialize a new stream */ status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); if (status) return status; /* add new stream to the head of the stream_list */ new_stream->next = ctx->stream_list; ctx->stream_list = new_stream; /* set direction to outbound */ new_stream->direction = dir_srtp_sender; /* set stream (the pointer used in this function) */ stream = new_stream; } else { /* no template stream, so we return an error */ return srtp_err_status_no_ctx; } } /* * verify that stream is for sending traffic - this check will * detect SSRC collisions, since a stream that appears in both * srtp_protect() and srtp_unprotect() will fail this test in one of * those functions. */ if (stream->direction != dir_srtp_sender) { if (stream->direction == dir_unknown) { stream->direction = dir_srtp_sender; } else { srtp_handle_event(ctx, stream, event_ssrc_collision); } } /* * Check if this is an AEAD stream (GCM mode). If so, then dispatch * the request to our AEAD handler. */ if (stream->rtp_cipher->algorithm == SRTP_AES_128_GCM || stream->rtp_cipher->algorithm == SRTP_AES_256_GCM) { return srtp_protect_aead(ctx, stream, rtp_hdr, (unsigned int*)pkt_octet_len); } /* * update the key usage limit, and check it to make sure that we * didn't just hit either the soft limit or the hard limit, and call * the event handler if we hit either. */ switch(srtp_key_limit_update(stream->limit)) { case srtp_key_event_normal: break; case srtp_key_event_soft_limit: srtp_handle_event(ctx, stream, event_key_soft_limit); break; case srtp_key_event_hard_limit: srtp_handle_event(ctx, stream, event_key_hard_limit); return srtp_err_status_key_expired; default: break; } /* get tag length from stream */ tag_len = srtp_auth_get_tag_length(stream->rtp_auth); /* * find starting point for encryption and length of data to be * encrypted - the encrypted portion starts after the rtp header * extension, if present; otherwise, it starts after the last csrc, * if any are present * * if we're not providing confidentiality, set enc_start to NULL */ if (stream->rtp_services & sec_serv_conf) { enc_start = (uint32_t *)hdr + uint32s_in_rtp_header + hdr->cc; if (hdr->x == 1) { xtn_hdr = (srtp_hdr_xtnd_t *)enc_start; enc_start += (ntohs(xtn_hdr->length) + 1); } /* note: the passed size is without the auth tag */ if (!((uint8_t*)enc_start <= (uint8_t*)hdr + *pkt_octet_len)) return srtp_err_status_parse_err; enc_octet_len = (int)(*pkt_octet_len - ((uint8_t*)enc_start - (uint8_t*)hdr)); if (enc_octet_len < 0) return srtp_err_status_parse_err; } else { enc_start = NULL; } /* * if we're providing authentication, set the auth_start and auth_tag * pointers to the proper locations; otherwise, set auth_start to NULL * to indicate that no authentication is needed */ if (stream->rtp_services & sec_serv_auth) { auth_start = (uint32_t *)hdr; auth_tag = (uint8_t *)hdr + *pkt_octet_len; } else { auth_start = NULL; auth_tag = NULL; } /* * estimate the packet index using the start of the replay window * and the sequence number from the header */ delta = srtp_rdbx_estimate_index(&stream->rtp_rdbx, &est, ntohs(hdr->seq)); status = srtp_rdbx_check(&stream->rtp_rdbx, delta); if (status) { if (status != srtp_err_status_replay_fail || !stream->allow_repeat_tx) return status; /* we've been asked to reuse an index */ } else srtp_rdbx_add_index(&stream->rtp_rdbx, delta); #ifdef NO_64BIT_MATH debug_print2(mod_srtp, "estimated packet index: %08x%08x", high32(est),low32(est)); #else debug_print(mod_srtp, "estimated packet index: %016llx", est); #endif /* * if we're using rindael counter mode, set nonce and seq */ if (stream->rtp_cipher->type->id == SRTP_AES_ICM || stream->rtp_cipher->type->id == SRTP_AES_256_ICM) { v128_t iv; iv.v32[0] = 0; iv.v32[1] = hdr->ssrc; #ifdef NO_64BIT_MATH iv.v64[1] = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16), low32(est) << 16)); #else iv.v64[1] = be64_to_cpu(est << 16); #endif status = srtp_cipher_set_iv(stream->rtp_cipher, (uint8_t*)&iv, srtp_direction_encrypt); if (!status && stream->rtp_xtn_hdr_cipher) { status = srtp_cipher_set_iv(stream->rtp_xtn_hdr_cipher, (uint8_t*)&iv, srtp_direction_encrypt); } } else { v128_t iv; /* otherwise, set the index to est */ #ifdef NO_64BIT_MATH iv.v32[0] = 0; iv.v32[1] = 0; #else iv.v64[0] = 0; #endif iv.v64[1] = be64_to_cpu(est); status = srtp_cipher_set_iv(stream->rtp_cipher, (uint8_t*)&iv, srtp_direction_encrypt); if (!status && stream->rtp_xtn_hdr_cipher) { status = srtp_cipher_set_iv(stream->rtp_xtn_hdr_cipher, (uint8_t*)&iv, srtp_direction_encrypt); } } if (status) return srtp_err_status_cipher_fail; /* shift est, put into network byte order */ #ifdef NO_64BIT_MATH est = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16), low32(est) << 16)); #else est = be64_to_cpu(est << 16); #endif /* * if we're authenticating using a universal hash, put the keystream * prefix into the authentication tag */ if (auth_start) { prefix_len = srtp_auth_get_prefix_length(stream->rtp_auth); if (prefix_len) { status = srtp_cipher_output(stream->rtp_cipher, auth_tag, &prefix_len); if (status) return srtp_err_status_cipher_fail; debug_print(mod_srtp, "keystream prefix: %s", srtp_octet_string_hex_string(auth_tag, prefix_len)); } } if (xtn_hdr && stream->rtp_xtn_hdr_cipher) { /* * extensions header encryption RFC 6904 */ status = srtp_process_header_encryption(stream, xtn_hdr); if (status) { return status; } } /* if we're encrypting, exor keystream into the message */ if (enc_start) { status = srtp_cipher_encrypt(stream->rtp_cipher, (uint8_t *)enc_start, (unsigned int *)&enc_octet_len); if (status) return srtp_err_status_cipher_fail; } /* * if we're authenticating, run authentication function and put result * into the auth_tag */ if (auth_start) { /* initialize auth func context */ status = srtp_auth_start(stream->rtp_auth); if (status) return status; /* run auth func over packet */ status = srtp_auth_update(stream->rtp_auth, (uint8_t *)auth_start, *pkt_octet_len); if (status) return status; /* run auth func over ROC, put result into auth_tag */ debug_print(mod_srtp, "estimated packet index: %016llx", est); status = srtp_auth_compute(stream->rtp_auth, (uint8_t *)&est, 4, auth_tag); debug_print(mod_srtp, "srtp auth tag: %s", srtp_octet_string_hex_string(auth_tag, tag_len)); if (status) return srtp_err_status_auth_fail; } if (auth_tag) { /* increase the packet length by the length of the auth tag */ *pkt_octet_len += tag_len; } return srtp_err_status_ok; } srtp_err_status_t srtp_unprotect(srtp_ctx_t *ctx, void *srtp_hdr, int *pkt_octet_len) { srtp_hdr_t *hdr = (srtp_hdr_t *)srtp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ uint32_t *auth_start; /* pointer to start of auth. portion */ unsigned int enc_octet_len = 0;/* number of octets in encrypted portion */ uint8_t *auth_tag = NULL; /* location of auth_tag within packet */ srtp_xtd_seq_num_t est; /* estimated xtd_seq_num_t of *hdr */ int delta; /* delta of local pkt idx and that in hdr */ v128_t iv; srtp_err_status_t status; srtp_stream_ctx_t *stream; uint8_t tmp_tag[SRTP_MAX_TAG_LEN]; uint32_t tag_len, prefix_len; srtp_hdr_xtnd_t *xtn_hdr = NULL; debug_print(mod_srtp, "function srtp_unprotect", NULL); /* we assume the hdr is 32-bit aligned to start */ /* Verify RTP header */ status = srtp_validate_rtp_header(srtp_hdr, pkt_octet_len); if (status) return status; /* check the packet length - it must at least contain a full header */ if (*pkt_octet_len < octets_in_rtp_header) return srtp_err_status_bad_param; /* * look up ssrc in srtp_stream list, and process the packet with * the appropriate stream. if we haven't seen this stream before, * there's only one key for this srtp_session, and the cipher * supports key-sharing, then we assume that a new stream using * that key has just started up */ stream = srtp_get_stream(ctx, hdr->ssrc); if (stream == NULL) { if (ctx->stream_template != NULL) { stream = ctx->stream_template; debug_print(mod_srtp, "using provisional stream (SSRC: 0x%08x)", ntohl(hdr->ssrc)); /* * set estimated packet index to sequence number from header, * and set delta equal to the same value */ #ifdef NO_64BIT_MATH est = (srtp_xtd_seq_num_t) make64(0,ntohs(hdr->seq)); delta = low32(est); #else est = (srtp_xtd_seq_num_t) ntohs(hdr->seq); delta = (int)est; #endif } else { /* * no stream corresponding to SSRC found, and we don't do * key-sharing, so return an error */ return srtp_err_status_no_ctx; } } else { /* estimate packet index from seq. num. in header */ delta = srtp_rdbx_estimate_index(&stream->rtp_rdbx, &est, ntohs(hdr->seq)); /* check replay database */ status = srtp_rdbx_check(&stream->rtp_rdbx, delta); if (status) return status; } #ifdef NO_64BIT_MATH debug_print2(mod_srtp, "estimated u_packet index: %08x%08x", high32(est),low32(est)); #else debug_print(mod_srtp, "estimated u_packet index: %016llx", est); #endif /* * Check if this is an AEAD stream (GCM mode). If so, then dispatch * the request to our AEAD handler. */ if (stream->rtp_cipher->algorithm == SRTP_AES_128_GCM || stream->rtp_cipher->algorithm == SRTP_AES_256_GCM) { return srtp_unprotect_aead(ctx, stream, delta, est, srtp_hdr, (unsigned int*)pkt_octet_len); } /* get tag length from stream */ tag_len = srtp_auth_get_tag_length(stream->rtp_auth); /* * set the cipher's IV properly, depending on whatever cipher we * happen to be using */ if (stream->rtp_cipher->type->id == SRTP_AES_ICM || stream->rtp_cipher->type->id == SRTP_AES_256_ICM) { /* aes counter mode */ iv.v32[0] = 0; iv.v32[1] = hdr->ssrc; /* still in network order */ #ifdef NO_64BIT_MATH iv.v64[1] = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16), low32(est) << 16)); #else iv.v64[1] = be64_to_cpu(est << 16); #endif status = srtp_cipher_set_iv(stream->rtp_cipher, (uint8_t*)&iv, srtp_direction_decrypt); if (!status && stream->rtp_xtn_hdr_cipher) { status = srtp_cipher_set_iv(stream->rtp_xtn_hdr_cipher, (uint8_t*)&iv, srtp_direction_decrypt); } } else { /* no particular format - set the iv to the pakcet index */ #ifdef NO_64BIT_MATH iv.v32[0] = 0; iv.v32[1] = 0; #else iv.v64[0] = 0; #endif iv.v64[1] = be64_to_cpu(est); status = srtp_cipher_set_iv(stream->rtp_cipher, (uint8_t*)&iv, srtp_direction_decrypt); if (!status && stream->rtp_xtn_hdr_cipher) { status = srtp_cipher_set_iv(stream->rtp_xtn_hdr_cipher, (uint8_t*)&iv, srtp_direction_decrypt); } } if (status) return srtp_err_status_cipher_fail; /* shift est, put into network byte order */ #ifdef NO_64BIT_MATH est = be64_to_cpu(make64((high32(est) << 16) | (low32(est) >> 16), low32(est) << 16)); #else est = be64_to_cpu(est << 16); #endif /* * find starting point for decryption and length of data to be * decrypted - the encrypted portion starts after the rtp header * extension, if present; otherwise, it starts after the last csrc, * if any are present * * if we're not providing confidentiality, set enc_start to NULL */ if (stream->rtp_services & sec_serv_conf) { enc_start = (uint32_t *)hdr + uint32s_in_rtp_header + hdr->cc; if (hdr->x == 1) { xtn_hdr = (srtp_hdr_xtnd_t *)enc_start; enc_start += (ntohs(xtn_hdr->length) + 1); } if (!((uint8_t*)enc_start <= (uint8_t*)hdr + (*pkt_octet_len - tag_len))) return srtp_err_status_parse_err; enc_octet_len = (uint32_t)(*pkt_octet_len - tag_len - ((uint8_t*)enc_start - (uint8_t*)hdr)); } else { enc_start = NULL; } /* * if we're providing authentication, set the auth_start and auth_tag * pointers to the proper locations; otherwise, set auth_start to NULL * to indicate that no authentication is needed */ if (stream->rtp_services & sec_serv_auth) { auth_start = (uint32_t *)hdr; auth_tag = (uint8_t *)hdr + *pkt_octet_len - tag_len; } else { auth_start = NULL; auth_tag = NULL; } /* * if we expect message authentication, run the authentication * function and compare the result with the value of the auth_tag */ if (auth_start) { /* * if we're using a universal hash, then we need to compute the * keystream prefix for encrypting the universal hash output * * if the keystream prefix length is zero, then we know that * the authenticator isn't using a universal hash function */ if (stream->rtp_auth->prefix_len != 0) { prefix_len = srtp_auth_get_prefix_length(stream->rtp_auth); status = srtp_cipher_output(stream->rtp_cipher, tmp_tag, &prefix_len); debug_print(mod_srtp, "keystream prefix: %s", srtp_octet_string_hex_string(tmp_tag, prefix_len)); if (status) return srtp_err_status_cipher_fail; } /* initialize auth func context */ status = srtp_auth_start(stream->rtp_auth); if (status) return status; /* now compute auth function over packet */ status = srtp_auth_update(stream->rtp_auth, (uint8_t *)auth_start, *pkt_octet_len - tag_len); /* run auth func over ROC, then write tmp tag */ status = srtp_auth_compute(stream->rtp_auth, (uint8_t *)&est, 4, tmp_tag); debug_print(mod_srtp, "computed auth tag: %s", srtp_octet_string_hex_string(tmp_tag, tag_len)); debug_print(mod_srtp, "packet auth tag: %s", srtp_octet_string_hex_string(auth_tag, tag_len)); if (status) return srtp_err_status_auth_fail; if (octet_string_is_eq(tmp_tag, auth_tag, tag_len)) return srtp_err_status_auth_fail; } /* * update the key usage limit, and check it to make sure that we * didn't just hit either the soft limit or the hard limit, and call * the event handler if we hit either. */ switch(srtp_key_limit_update(stream->limit)) { case srtp_key_event_normal: break; case srtp_key_event_soft_limit: srtp_handle_event(ctx, stream, event_key_soft_limit); break; case srtp_key_event_hard_limit: srtp_handle_event(ctx, stream, event_key_hard_limit); return srtp_err_status_key_expired; default: break; } if (xtn_hdr && stream->rtp_xtn_hdr_cipher) { /* * extensions header encryption RFC 6904 */ status = srtp_process_header_encryption(stream, xtn_hdr); if (status) { return status; } } /* if we're decrypting, add keystream into ciphertext */ if (enc_start) { status = srtp_cipher_decrypt(stream->rtp_cipher, (uint8_t *)enc_start, &enc_octet_len); if (status) return srtp_err_status_cipher_fail; } /* * verify that stream is for received traffic - this check will * detect SSRC collisions, since a stream that appears in both * srtp_protect() and srtp_unprotect() will fail this test in one of * those functions. * * we do this check *after* the authentication check, so that the * latter check will catch any attempts to fool us into thinking * that we've got a collision */ if (stream->direction != dir_srtp_receiver) { if (stream->direction == dir_unknown) { stream->direction = dir_srtp_receiver; } else { srtp_handle_event(ctx, stream, event_ssrc_collision); } } /* * if the stream is a 'provisional' one, in which the template context * is used, then we need to allocate a new stream at this point, since * the authentication passed */ if (stream == ctx->stream_template) { srtp_stream_ctx_t *new_stream; /* * allocate and initialize a new stream * * note that we indicate failure if we can't allocate the new * stream, and some implementations will want to not return * failure here */ status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); if (status) return status; /* add new stream to the head of the stream_list */ new_stream->next = ctx->stream_list; ctx->stream_list = new_stream; /* set stream (the pointer used in this function) */ stream = new_stream; } /* * the message authentication function passed, so add the packet * index into the replay database */ srtp_rdbx_add_index(&stream->rtp_rdbx, delta); /* decrease the packet length by the length of the auth tag */ *pkt_octet_len -= tag_len; return srtp_err_status_ok; } srtp_err_status_t srtp_init() { srtp_err_status_t status; /* initialize crypto kernel */ status = srtp_crypto_kernel_init(); if (status) return status; /* load srtp debug module into the kernel */ status = srtp_crypto_kernel_load_debug_module(&mod_srtp); if (status) return status; return srtp_err_status_ok; } srtp_err_status_t srtp_shutdown() { srtp_err_status_t status; /* shut down crypto kernel */ status = srtp_crypto_kernel_shutdown(); if (status) return status; /* shutting down crypto kernel frees the srtp debug module as well */ return srtp_err_status_ok; } /* * The following code is under consideration for removal. See * SRTP_MAX_TRAILER_LEN */ #if 0 /* * srtp_get_trailer_length(&a) returns the number of octets that will * be added to an RTP packet by the SRTP processing. This value * is constant for a given srtp_stream_t (i.e. between initializations). */ int srtp_get_trailer_length(const srtp_stream_t s) { return srtp_auth_get_tag_length(s->rtp_auth); } #endif /* * srtp_get_stream(ssrc) returns a pointer to the stream corresponding * to ssrc, or NULL if no stream exists for that ssrc * * this is an internal function */ srtp_stream_ctx_t * srtp_get_stream(srtp_t srtp, uint32_t ssrc) { srtp_stream_ctx_t *stream; /* walk down list until ssrc is found */ stream = srtp->stream_list; while (stream != NULL) { if (stream->ssrc == ssrc) return stream; stream = stream->next; } /* we haven't found our ssrc, so return a null */ return NULL; } srtp_err_status_t srtp_dealloc(srtp_t session) { srtp_stream_ctx_t *stream; srtp_err_status_t status; /* * we take a conservative deallocation strategy - if we encounter an * error deallocating a stream, then we stop trying to deallocate * memory and just return an error */ /* walk list of streams, deallocating as we go */ stream = session->stream_list; while (stream != NULL) { srtp_stream_t next = stream->next; status = srtp_stream_dealloc(stream, session->stream_template); if (status) return status; stream = next; } /* deallocate stream template, if there is one */ if (session->stream_template != NULL) { status = srtp_stream_dealloc(session->stream_template, NULL); if (status) return status; } /* deallocate session context */ srtp_crypto_free(session); return srtp_err_status_ok; } srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy) { srtp_err_status_t status; srtp_stream_t tmp; /* sanity check arguments */ if ((session == NULL) || (policy == NULL) || (policy->key == NULL)) return srtp_err_status_bad_param; /* allocate stream */ status = srtp_stream_alloc(&tmp, policy); if (status) { return status; } /* initialize stream */ status = srtp_stream_init(tmp, policy); if (status) { srtp_crypto_free(tmp); return status; } /* * set the head of the stream list or the template to point to the * stream that we've just alloced and init'ed, depending on whether * or not it has a wildcard SSRC value or not * * if the template stream has already been set, then the policy is * inconsistent, so we return a bad_param error code */ switch (policy->ssrc.type) { case (ssrc_any_outbound): if (session->stream_template) { return srtp_err_status_bad_param; } session->stream_template = tmp; session->stream_template->direction = dir_srtp_sender; break; case (ssrc_any_inbound): if (session->stream_template) { return srtp_err_status_bad_param; } session->stream_template = tmp; session->stream_template->direction = dir_srtp_receiver; break; case (ssrc_specific): tmp->next = session->stream_list; session->stream_list = tmp; break; case (ssrc_undefined): default: srtp_crypto_free(tmp); return srtp_err_status_bad_param; } return srtp_err_status_ok; } srtp_err_status_t srtp_create(srtp_t *session, /* handle for session */ const srtp_policy_t *policy) { /* SRTP policy (list) */ srtp_err_status_t stat; srtp_ctx_t *ctx; /* sanity check arguments */ if (session == NULL) return srtp_err_status_bad_param; /* allocate srtp context and set ctx_ptr */ ctx = (srtp_ctx_t *) srtp_crypto_alloc(sizeof(srtp_ctx_t)); if (ctx == NULL) return srtp_err_status_alloc_fail; *session = ctx; /* * loop over elements in the policy list, allocating and * initializing a stream for each element */ ctx->stream_template = NULL; ctx->stream_list = NULL; ctx->user_data = NULL; while (policy != NULL) { stat = srtp_add_stream(ctx, policy); if (stat) { /* clean up everything */ srtp_dealloc(*session); *session = NULL; return stat; } /* set policy to next item in list */ policy = policy->next; } return srtp_err_status_ok; } srtp_err_status_t srtp_remove_stream(srtp_t session, uint32_t ssrc) { srtp_stream_ctx_t *stream, *last_stream; srtp_err_status_t status; /* sanity check arguments */ if (session == NULL) return srtp_err_status_bad_param; /* find stream in list; complain if not found */ last_stream = stream = session->stream_list; while ((stream != NULL) && (ssrc != stream->ssrc)) { last_stream = stream; stream = stream->next; } if (stream == NULL) return srtp_err_status_no_ctx; /* remove stream from the list */ if (last_stream == stream) /* stream was first in list */ session->stream_list = stream->next; else last_stream->next = stream->next; /* deallocate the stream */ status = srtp_stream_dealloc(stream, session->stream_template); if (status) return status; return srtp_err_status_ok; } srtp_err_status_t srtp_update(srtp_t session, const srtp_policy_t *policy) { srtp_err_status_t stat; /* sanity check arguments */ if ((session == NULL) || (policy == NULL) || (policy->key == NULL)) { return srtp_err_status_bad_param; } while (policy != NULL) { stat = srtp_update_stream(session, policy); if (stat) { return stat; } /* set policy to next item in list */ policy = policy->next; } return srtp_err_status_ok; } static srtp_err_status_t update_template_streams(srtp_t session, const srtp_policy_t *policy) { srtp_err_status_t status; srtp_stream_t new_stream_template; srtp_stream_t new_stream_list = NULL; if (session->stream_template == NULL) { return srtp_err_status_bad_param; } /* allocate new template stream */ status = srtp_stream_alloc(&new_stream_template, policy); if (status) { return status; } /* initialize new template stream */ status = srtp_stream_init(new_stream_template, policy); if (status) { srtp_crypto_free(new_stream_template); return status; } /* for all old templated streams */ for (;;) { srtp_stream_t stream; uint32_t ssrc; srtp_xtd_seq_num_t old_index; srtp_rdb_t old_rtcp_rdb; stream = session->stream_list; while ((stream != NULL) && (stream->rtp_auth != session->stream_template->rtp_auth)) { stream = stream->next; } if (stream == NULL) { /* no more templated streams */ break; } /* save old extendard seq */ ssrc = stream->ssrc; old_index = stream->rtp_rdbx.index; old_rtcp_rdb = stream->rtcp_rdb; /* remove stream */ status = srtp_remove_stream(session, ssrc); if (status) { /* free new allocations */ while (new_stream_list != NULL) { srtp_stream_t next = new_stream_list->next; srtp_stream_dealloc(new_stream_list, new_stream_template); new_stream_list = next; } srtp_stream_dealloc(new_stream_template, NULL); return status; } /* allocate and initialize a new stream */ status = srtp_stream_clone(new_stream_template, ssrc, &stream); if (status) { /* free new allocations */ while (new_stream_list != NULL) { srtp_stream_t next = new_stream_list->next; srtp_stream_dealloc(new_stream_list, new_stream_template); new_stream_list = next; } srtp_stream_dealloc(new_stream_template, NULL); return status; } /* add new stream to the head of the new_stream_list */ stream->next = new_stream_list; new_stream_list = stream; /* restore old extended seq */ stream->rtp_rdbx.index = old_index; stream->rtcp_rdb = old_rtcp_rdb; } /* dealloc old template */ srtp_stream_dealloc(session->stream_template, NULL); /* set new template */ session->stream_template = new_stream_template; /* add new list */ if (new_stream_list) { srtp_stream_t tail = new_stream_list; while (tail->next) { tail = tail->next; } tail->next = session->stream_list; session->stream_list = new_stream_list; } return status; } static srtp_err_status_t update_stream(srtp_t session, const srtp_policy_t *policy) { srtp_err_status_t status; srtp_xtd_seq_num_t old_index; srtp_rdb_t old_rtcp_rdb; srtp_stream_t stream; stream = srtp_get_stream(session, htonl(policy->ssrc.value)); if (stream == NULL) { return srtp_err_status_bad_param; } /* save old extendard seq */ old_index = stream->rtp_rdbx.index; old_rtcp_rdb = stream->rtcp_rdb; status = srtp_remove_stream(session, htonl(policy->ssrc.value)); if (status) { return status; } status = srtp_add_stream(session, policy); if (status) { return status; } stream = srtp_get_stream(session, htonl(policy->ssrc.value)); if (stream == NULL) { return srtp_err_status_fail; } /* restore old extended seq */ stream->rtp_rdbx.index = old_index; stream->rtcp_rdb = old_rtcp_rdb; return srtp_err_status_ok; } srtp_err_status_t srtp_update_stream(srtp_t session, const srtp_policy_t *policy) { srtp_err_status_t status; /* sanity check arguments */ if ((session == NULL) || (policy == NULL) || (policy->key == NULL)) return srtp_err_status_bad_param; switch (policy->ssrc.type) { case (ssrc_any_outbound): case (ssrc_any_inbound): status = update_template_streams(session, policy); break; case (ssrc_specific): status = update_stream(session, policy); break; case (ssrc_undefined): default: return srtp_err_status_bad_param; } return status; } /* * the default policy - provides a convenient way for callers to use * the default security policy * * this policy is that defined in the current SRTP internet draft. * */ /* * NOTE: cipher_key_len is really key len (128 bits) plus salt len * (112 bits) */ /* There are hard-coded 16's for base_key_len in the key generation code */ void srtp_crypto_policy_set_rtp_default(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 30; /* default 128 bits per RFC 3711 */ p->auth_type = SRTP_HMAC_SHA1; p->auth_key_len = 20; /* default 160 bits per RFC 3711 */ p->auth_tag_len = 10; /* default 80 bits per RFC 3711 */ p->sec_serv = sec_serv_conf_and_auth; } void srtp_crypto_policy_set_rtcp_default(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 30; /* default 128 bits per RFC 3711 */ p->auth_type = SRTP_HMAC_SHA1; p->auth_key_len = 20; /* default 160 bits per RFC 3711 */ p->auth_tag_len = 10; /* default 80 bits per RFC 3711 */ p->sec_serv = sec_serv_conf_and_auth; } void srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(srtp_crypto_policy_t *p) { /* * corresponds to RFC 4568 * * note that this crypto policy is intended for SRTP, but not SRTCP */ p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 30; /* 128 bit key, 112 bit salt */ p->auth_type = SRTP_HMAC_SHA1; p->auth_key_len = 20; /* 160 bit key */ p->auth_tag_len = 4; /* 32 bit tag */ p->sec_serv = sec_serv_conf_and_auth; } void srtp_crypto_policy_set_aes_cm_128_null_auth(srtp_crypto_policy_t *p) { /* * corresponds to RFC 4568 * * note that this crypto policy is intended for SRTP, but not SRTCP */ p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 30; /* 128 bit key, 112 bit salt */ p->auth_type = SRTP_NULL_AUTH; p->auth_key_len = 0; p->auth_tag_len = 0; p->sec_serv = sec_serv_conf; } void srtp_crypto_policy_set_null_cipher_hmac_sha1_80(srtp_crypto_policy_t *p) { /* * corresponds to RFC 4568 */ p->cipher_type = SRTP_NULL_CIPHER; p->cipher_key_len = 0; p->auth_type = SRTP_HMAC_SHA1; p->auth_key_len = 20; p->auth_tag_len = 10; p->sec_serv = sec_serv_auth; } void srtp_crypto_policy_set_null_cipher_hmac_null(srtp_crypto_policy_t *p) { /* * Should only be used for testing */ p->cipher_type = SRTP_NULL_CIPHER; p->cipher_key_len = 0; p->auth_type = SRTP_NULL_AUTH; p->auth_key_len = 0; p->auth_tag_len = 0; p->sec_serv = sec_serv_none; } void srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(srtp_crypto_policy_t *p) { /* * corresponds to draft-ietf-avt-big-aes-03.txt */ p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 46; p->auth_type = SRTP_HMAC_SHA1; p->auth_key_len = 20; /* default 160 bits per RFC 3711 */ p->auth_tag_len = 10; /* default 80 bits per RFC 3711 */ p->sec_serv = sec_serv_conf_and_auth; } void srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(srtp_crypto_policy_t *p) { /* * corresponds to draft-ietf-avt-big-aes-03.txt * * note that this crypto policy is intended for SRTP, but not SRTCP */ p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 46; p->auth_type = SRTP_HMAC_SHA1; p->auth_key_len = 20; /* default 160 bits per RFC 3711 */ p->auth_tag_len = 4; /* default 80 bits per RFC 3711 */ p->sec_serv = sec_serv_conf_and_auth; } /* * AES-256 with no authentication. */ void srtp_crypto_policy_set_aes_cm_256_null_auth (srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_ICM; p->cipher_key_len = 46; p->auth_type = SRTP_NULL_AUTH; p->auth_key_len = 0; p->auth_tag_len = 0; p->sec_serv = sec_serv_conf; } #ifdef OPENSSL /* * AES-128 GCM mode with 8 octet auth tag. */ void srtp_crypto_policy_set_aes_gcm_128_8_auth(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_128_GCM; p->cipher_key_len = SRTP_AES_128_GCM_KEYSIZE_WSALT; p->auth_type = SRTP_NULL_AUTH; /* GCM handles the auth for us */ p->auth_key_len = 0; p->auth_tag_len = 8; /* 8 octet tag length */ p->sec_serv = sec_serv_conf_and_auth; } /* * AES-256 GCM mode with 8 octet auth tag. */ void srtp_crypto_policy_set_aes_gcm_256_8_auth(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_256_GCM; p->cipher_key_len = SRTP_AES_256_GCM_KEYSIZE_WSALT; p->auth_type = SRTP_NULL_AUTH; /* GCM handles the auth for us */ p->auth_key_len = 0; p->auth_tag_len = 8; /* 8 octet tag length */ p->sec_serv = sec_serv_conf_and_auth; } /* * AES-128 GCM mode with 8 octet auth tag, no RTCP encryption. */ void srtp_crypto_policy_set_aes_gcm_128_8_only_auth(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_128_GCM; p->cipher_key_len = SRTP_AES_128_GCM_KEYSIZE_WSALT; p->auth_type = SRTP_NULL_AUTH; /* GCM handles the auth for us */ p->auth_key_len = 0; p->auth_tag_len = 8; /* 8 octet tag length */ p->sec_serv = sec_serv_auth; /* This only applies to RTCP */ } /* * AES-256 GCM mode with 8 octet auth tag, no RTCP encryption. */ void srtp_crypto_policy_set_aes_gcm_256_8_only_auth(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_256_GCM; p->cipher_key_len = SRTP_AES_256_GCM_KEYSIZE_WSALT; p->auth_type = SRTP_NULL_AUTH; /* GCM handles the auth for us */ p->auth_key_len = 0; p->auth_tag_len = 8; /* 8 octet tag length */ p->sec_serv = sec_serv_auth; /* This only applies to RTCP */ } /* * AES-128 GCM mode with 16 octet auth tag. */ void srtp_crypto_policy_set_aes_gcm_128_16_auth(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_128_GCM; p->cipher_key_len = SRTP_AES_128_GCM_KEYSIZE_WSALT; p->auth_type = SRTP_NULL_AUTH; /* GCM handles the auth for us */ p->auth_key_len = 0; p->auth_tag_len = 16; /* 16 octet tag length */ p->sec_serv = sec_serv_conf_and_auth; } /* * AES-256 GCM mode with 16 octet auth tag. */ void srtp_crypto_policy_set_aes_gcm_256_16_auth(srtp_crypto_policy_t *p) { p->cipher_type = SRTP_AES_256_GCM; p->cipher_key_len = SRTP_AES_256_GCM_KEYSIZE_WSALT; p->auth_type = SRTP_NULL_AUTH; /* GCM handles the auth for us */ p->auth_key_len = 0; p->auth_tag_len = 16; /* 16 octet tag length */ p->sec_serv = sec_serv_conf_and_auth; } #endif /* * secure rtcp functions */ /* * AEAD uses a new IV formation method. This function implements * section 10.1 from draft-ietf-avtcore-srtp-aes-gcm-07.txt. The * calculation is defined as, where (+) is the xor operation: * * 0 1 2 3 4 5 6 7 8 9 10 11 * +--+--+--+--+--+--+--+--+--+--+--+--+ * |00|00| SSRC |00|00|0+SRTCP Idx|---+ * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | Encryption Salt |->(+) * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | * +--+--+--+--+--+--+--+--+--+--+--+--+ | * | Initialization Vector |<--+ * +--+--+--+--+--+--+--+--+--+--+--+--+* * * Input: *stream - pointer to SRTP stream context, used to retrieve * the SALT * *iv - Pointer to recieve the calculated IV * seq_num - The SEQ value to use for the IV calculation. * *hdr - The RTP header, used to get the SSRC value * */ static void srtp_calc_aead_iv_srtcp(srtp_stream_ctx_t *stream, v128_t *iv, uint32_t seq_num, srtcp_hdr_t *hdr) { v128_t in; v128_t salt; memset(&in, 0, sizeof(v128_t)); memset(&salt, 0, sizeof(v128_t)); in.v16[0] = 0; memcpy(&in.v16[1], &hdr->ssrc, 4); /* still in network order! */ in.v16[3] = 0; in.v32[2] = 0x7FFFFFFF & htonl(seq_num); /* bit 32 is suppose to be zero */ debug_print(mod_srtp, "Pre-salted RTCP IV = %s\n", v128_hex_string(&in)); /* * Get the SALT value from the context */ memcpy(salt.v8, stream->c_salt, 12); debug_print(mod_srtp, "RTCP SALT = %s\n", v128_hex_string(&salt)); /* * Finally, apply the SALT to the input */ v128_xor(iv, &in, &salt); } /* * This code handles AEAD ciphers for outgoing RTCP. We currently support * AES-GCM mode with 128 or 256 bit keys. */ static srtp_err_status_t srtp_protect_rtcp_aead (srtp_t ctx, srtp_stream_ctx_t *stream, void *rtcp_hdr, unsigned int *pkt_octet_len) { srtcp_hdr_t *hdr = (srtcp_hdr_t*)rtcp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ uint32_t *trailer; /* pointer to start of trailer */ unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */ uint8_t *auth_tag = NULL; /* location of auth_tag within packet */ srtp_err_status_t status; uint32_t tag_len; uint32_t seq_num; v128_t iv; uint32_t tseq; /* get tag length from stream context */ tag_len = srtp_auth_get_tag_length(stream->rtcp_auth); /* * set encryption start and encryption length - if we're not * providing confidentiality, set enc_start to NULL */ enc_start = (uint32_t*)hdr + uint32s_in_rtcp_header; enc_octet_len = *pkt_octet_len - octets_in_rtcp_header; /* NOTE: hdr->length is not usable - it refers to only the first RTCP report in the compound packet! */ /* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always multiples of 32-bits (RFC 3550 6.1) */ trailer = (uint32_t*)((char*)enc_start + enc_octet_len + tag_len); if (stream->rtcp_services & sec_serv_conf) { *trailer = htonl(SRTCP_E_BIT); /* set encrypt bit */ } else { enc_start = NULL; enc_octet_len = 0; /* 0 is network-order independant */ *trailer = 0x00000000; /* set encrypt bit */ } /* * set the auth_tag pointer to the proper location, which is after * the payload, but before the trailer * (note that srtpc *always* provides authentication, unlike srtp) */ /* Note: This would need to change for optional mikey data */ auth_tag = (uint8_t*)hdr + *pkt_octet_len; /* * check sequence number for overruns, and copy it into the packet * if its value isn't too big */ status = srtp_rdb_increment(&stream->rtcp_rdb); if (status) { return status; } seq_num = srtp_rdb_get_value(&stream->rtcp_rdb); *trailer |= htonl(seq_num); debug_print(mod_srtp, "srtcp index: %x", seq_num); /* * Calculating the IV and pass it down to the cipher */ srtp_calc_aead_iv_srtcp(stream, &iv, seq_num, hdr); status = srtp_cipher_set_iv(stream->rtcp_cipher, (uint8_t*)&iv, srtp_direction_encrypt); if (status) { return srtp_err_status_cipher_fail; } /* * Set the AAD for GCM mode */ if (enc_start) { /* * If payload encryption is enabled, then the AAD consist of * the RTCP header and the seq# at the end of the packet */ status = srtp_cipher_set_aad(stream->rtcp_cipher, (uint8_t*)hdr, octets_in_rtcp_header); if (status) { return ( srtp_err_status_cipher_fail); } } else { /* * Since payload encryption is not enabled, we must authenticate * the entire packet as described in section 10.3 in revision 07 * of the draft. */ status = srtp_cipher_set_aad(stream->rtcp_cipher, (uint8_t*)hdr, *pkt_octet_len); if (status) { return ( srtp_err_status_cipher_fail); } } /* * Process the sequence# as AAD */ tseq = *trailer; status = srtp_cipher_set_aad(stream->rtcp_cipher, (uint8_t*)&tseq, sizeof(srtcp_trailer_t)); if (status) { return ( srtp_err_status_cipher_fail); } /* if we're encrypting, exor keystream into the message */ if (enc_start) { status = srtp_cipher_encrypt(stream->rtcp_cipher, (uint8_t*)enc_start, &enc_octet_len); if (status) { return srtp_err_status_cipher_fail; } /* * Get the tag and append that to the output */ status = srtp_cipher_get_tag(stream->rtcp_cipher, (uint8_t*)auth_tag, &tag_len); if (status) { return ( srtp_err_status_cipher_fail); } enc_octet_len += tag_len; } else { /* * Even though we're not encrypting the payload, we need * to run the cipher to get the auth tag. */ unsigned int nolen = 0; status = srtp_cipher_encrypt(stream->rtcp_cipher, NULL, &nolen); if (status) { return srtp_err_status_cipher_fail; } /* * Get the tag and append that to the output */ status = srtp_cipher_get_tag(stream->rtcp_cipher, (uint8_t*)auth_tag, &tag_len); if (status) { return ( srtp_err_status_cipher_fail); } enc_octet_len += tag_len; } /* increase the packet length by the length of the auth tag and seq_num*/ *pkt_octet_len += (tag_len + sizeof(srtcp_trailer_t)); return srtp_err_status_ok; } /* * This function handles incoming SRTCP packets while in AEAD mode, * which currently supports AES-GCM encryption. Note, the auth tag is * at the end of the packet stream and is automatically checked by GCM * when decrypting the payload. */ static srtp_err_status_t srtp_unprotect_rtcp_aead (srtp_t ctx, srtp_stream_ctx_t *stream, void *srtcp_hdr, unsigned int *pkt_octet_len) { srtcp_hdr_t *hdr = (srtcp_hdr_t*)srtcp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ uint32_t *trailer; /* pointer to start of trailer */ unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */ uint8_t *auth_tag = NULL; /* location of auth_tag within packet */ srtp_err_status_t status; int tag_len; unsigned int tmp_len; uint32_t seq_num; v128_t iv; uint32_t tseq; /* get tag length from stream context */ tag_len = srtp_auth_get_tag_length(stream->rtcp_auth); /* * set encryption start, encryption length, and trailer */ /* index & E (encryption) bit follow normal data. hdr->len is the number of words (32-bit) in the normal packet minus 1 */ /* This should point trailer to the word past the end of the normal data. */ /* This would need to be modified for optional mikey data */ /* * NOTE: trailer is 32-bit aligned because RTCP 'packets' are always * multiples of 32-bits (RFC 3550 6.1) */ trailer = (uint32_t*)((char*)hdr + *pkt_octet_len - sizeof(srtcp_trailer_t)); /* * We pass the tag down to the cipher when doing GCM mode */ enc_octet_len = *pkt_octet_len - (octets_in_rtcp_header + sizeof(srtcp_trailer_t)); auth_tag = (uint8_t*)hdr + *pkt_octet_len - tag_len - sizeof(srtcp_trailer_t); if (*((unsigned char*)trailer) & SRTCP_E_BYTE_BIT) { enc_start = (uint32_t*)hdr + uint32s_in_rtcp_header; } else { enc_octet_len = 0; enc_start = NULL; /* this indicates that there's no encryption */ } /* * check the sequence number for replays */ /* this is easier than dealing with bitfield access */ seq_num = ntohl(*trailer) & SRTCP_INDEX_MASK; debug_print(mod_srtp, "srtcp index: %x", seq_num); status = srtp_rdb_check(&stream->rtcp_rdb, seq_num); if (status) { return status; } /* * Calculate and set the IV */ srtp_calc_aead_iv_srtcp(stream, &iv, seq_num, hdr); status = srtp_cipher_set_iv(stream->rtcp_cipher, (uint8_t*)&iv, srtp_direction_decrypt); if (status) { return srtp_err_status_cipher_fail; } /* * Set the AAD for GCM mode */ if (enc_start) { /* * If payload encryption is enabled, then the AAD consist of * the RTCP header and the seq# at the end of the packet */ status = srtp_cipher_set_aad(stream->rtcp_cipher, (uint8_t*)hdr, octets_in_rtcp_header); if (status) { return ( srtp_err_status_cipher_fail); } } else { /* * Since payload encryption is not enabled, we must authenticate * the entire packet as described in section 10.3 in revision 07 * of the draft. */ status = srtp_cipher_set_aad(stream->rtcp_cipher, (uint8_t*)hdr, (*pkt_octet_len - tag_len - sizeof(srtcp_trailer_t))); if (status) { return ( srtp_err_status_cipher_fail); } } /* * Process the sequence# as AAD */ tseq = *trailer; status = srtp_cipher_set_aad(stream->rtcp_cipher, (uint8_t*)&tseq, sizeof(srtcp_trailer_t)); if (status) { return ( srtp_err_status_cipher_fail); } /* if we're decrypting, exor keystream into the message */ if (enc_start) { status = srtp_cipher_decrypt(stream->rtcp_cipher, (uint8_t*)enc_start, &enc_octet_len); if (status) { return status; } } else { /* * Still need to run the cipher to check the tag */ tmp_len = tag_len; status = srtp_cipher_decrypt(stream->rtcp_cipher, (uint8_t*)auth_tag, &tmp_len); if (status) { return status; } } /* decrease the packet length by the length of the auth tag and seq_num*/ *pkt_octet_len -= (tag_len + sizeof(srtcp_trailer_t)); /* * verify that stream is for received traffic - this check will * detect SSRC collisions, since a stream that appears in both * srtp_protect() and srtp_unprotect() will fail this test in one of * those functions. * * we do this check *after* the authentication check, so that the * latter check will catch any attempts to fool us into thinking * that we've got a collision */ if (stream->direction != dir_srtp_receiver) { if (stream->direction == dir_unknown) { stream->direction = dir_srtp_receiver; } else { srtp_handle_event(ctx, stream, event_ssrc_collision); } } /* * if the stream is a 'provisional' one, in which the template context * is used, then we need to allocate a new stream at this point, since * the authentication passed */ if (stream == ctx->stream_template) { srtp_stream_ctx_t *new_stream; /* * allocate and initialize a new stream * * note that we indicate failure if we can't allocate the new * stream, and some implementations will want to not return * failure here */ status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); if (status) { return status; } /* add new stream to the head of the stream_list */ new_stream->next = ctx->stream_list; ctx->stream_list = new_stream; /* set stream (the pointer used in this function) */ stream = new_stream; } /* we've passed the authentication check, so add seq_num to the rdb */ srtp_rdb_add_index(&stream->rtcp_rdb, seq_num); return srtp_err_status_ok; } srtp_err_status_t srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len) { srtcp_hdr_t *hdr = (srtcp_hdr_t *)rtcp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ uint32_t *auth_start; /* pointer to start of auth. portion */ uint32_t *trailer; /* pointer to start of trailer */ unsigned int enc_octet_len = 0;/* number of octets in encrypted portion */ uint8_t *auth_tag = NULL; /* location of auth_tag within packet */ srtp_err_status_t status; int tag_len; srtp_stream_ctx_t *stream; uint32_t prefix_len; uint32_t seq_num; /* we assume the hdr is 32-bit aligned to start */ /* check the packet length - it must at least contain a full header */ if (*pkt_octet_len < octets_in_rtcp_header) return srtp_err_status_bad_param; /* * look up ssrc in srtp_stream list, and process the packet with * the appropriate stream. if we haven't seen this stream before, * there's only one key for this srtp_session, and the cipher * supports key-sharing, then we assume that a new stream using * that key has just started up */ stream = srtp_get_stream(ctx, hdr->ssrc); if (stream == NULL) { if (ctx->stream_template != NULL) { srtp_stream_ctx_t *new_stream; /* allocate and initialize a new stream */ status = srtp_stream_clone(ctx->stream_template, hdr->ssrc, &new_stream); if (status) return status; /* add new stream to the head of the stream_list */ new_stream->next = ctx->stream_list; ctx->stream_list = new_stream; /* set stream (the pointer used in this function) */ stream = new_stream; } else { /* no template stream, so we return an error */ return srtp_err_status_no_ctx; } } /* * verify that stream is for sending traffic - this check will * detect SSRC collisions, since a stream that appears in both * srtp_protect() and srtp_unprotect() will fail this test in one of * those functions. */ if (stream->direction != dir_srtp_sender) { if (stream->direction == dir_unknown) { stream->direction = dir_srtp_sender; } else { srtp_handle_event(ctx, stream, event_ssrc_collision); } } /* * Check if this is an AEAD stream (GCM mode). If so, then dispatch * the request to our AEAD handler. */ if (stream->rtp_cipher->algorithm == SRTP_AES_128_GCM || stream->rtp_cipher->algorithm == SRTP_AES_256_GCM) { return srtp_protect_rtcp_aead(ctx, stream, rtcp_hdr, (unsigned int*)pkt_octet_len); } /* get tag length from stream context */ tag_len = srtp_auth_get_tag_length(stream->rtcp_auth); /* * set encryption start and encryption length - if we're not * providing confidentiality, set enc_start to NULL */ enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header; enc_octet_len = *pkt_octet_len - octets_in_rtcp_header; /* all of the packet, except the header, gets encrypted */ /* NOTE: hdr->length is not usable - it refers to only the first RTCP report in the compound packet! */ /* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always multiples of 32-bits (RFC 3550 6.1) */ trailer = (uint32_t *) ((char *)enc_start + enc_octet_len); if (stream->rtcp_services & sec_serv_conf) { *trailer = htonl(SRTCP_E_BIT); /* set encrypt bit */ } else { enc_start = NULL; enc_octet_len = 0; /* 0 is network-order independant */ *trailer = 0x00000000; /* set encrypt bit */ } /* * set the auth_start and auth_tag pointers to the proper locations * (note that srtpc *always* provides authentication, unlike srtp) */ /* Note: This would need to change for optional mikey data */ auth_start = (uint32_t *)hdr; auth_tag = (uint8_t *)hdr + *pkt_octet_len + sizeof(srtcp_trailer_t); /* perform EKT processing if needed */ srtp_ekt_write_data(stream->ekt, auth_tag, tag_len, pkt_octet_len, srtp_rdbx_get_packet_index(&stream->rtp_rdbx)); /* * check sequence number for overruns, and copy it into the packet * if its value isn't too big */ status = srtp_rdb_increment(&stream->rtcp_rdb); if (status) return status; seq_num = srtp_rdb_get_value(&stream->rtcp_rdb); *trailer |= htonl(seq_num); debug_print(mod_srtp, "srtcp index: %x", seq_num); /* * if we're using rindael counter mode, set nonce and seq */ if (stream->rtcp_cipher->type->id == SRTP_AES_ICM) { v128_t iv; iv.v32[0] = 0; iv.v32[1] = hdr->ssrc; /* still in network order! */ iv.v32[2] = htonl(seq_num >> 16); iv.v32[3] = htonl(seq_num << 16); status = srtp_cipher_set_iv(stream->rtcp_cipher, (uint8_t*)&iv, srtp_direction_encrypt); } else { v128_t iv; /* otherwise, just set the index to seq_num */ iv.v32[0] = 0; iv.v32[1] = 0; iv.v32[2] = 0; iv.v32[3] = htonl(seq_num); status = srtp_cipher_set_iv(stream->rtcp_cipher, (uint8_t*)&iv, srtp_direction_encrypt); } if (status) return srtp_err_status_cipher_fail; /* * if we're authenticating using a universal hash, put the keystream * prefix into the authentication tag */ /* if auth_start is non-null, then put keystream into tag */ if (auth_start) { /* put keystream prefix into auth_tag */ prefix_len = srtp_auth_get_prefix_length(stream->rtcp_auth); status = srtp_cipher_output(stream->rtcp_cipher, auth_tag, &prefix_len); debug_print(mod_srtp, "keystream prefix: %s", srtp_octet_string_hex_string(auth_tag, prefix_len)); if (status) return srtp_err_status_cipher_fail; } /* if we're encrypting, exor keystream into the message */ if (enc_start) { status = srtp_cipher_encrypt(stream->rtcp_cipher, (uint8_t *)enc_start, &enc_octet_len); if (status) return srtp_err_status_cipher_fail; } /* initialize auth func context */ srtp_auth_start(stream->rtcp_auth); /* * run auth func over packet (including trailer), and write the * result at auth_tag */ status = srtp_auth_compute(stream->rtcp_auth, (uint8_t *)auth_start, (*pkt_octet_len) + sizeof(srtcp_trailer_t), auth_tag); debug_print(mod_srtp, "srtcp auth tag: %s", srtp_octet_string_hex_string(auth_tag, tag_len)); if (status) return srtp_err_status_auth_fail; /* increase the packet length by the length of the auth tag and seq_num*/ *pkt_octet_len += (tag_len + sizeof(srtcp_trailer_t)); return srtp_err_status_ok; } srtp_err_status_t srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len) { srtcp_hdr_t *hdr = (srtcp_hdr_t *)srtcp_hdr; uint32_t *enc_start; /* pointer to start of encrypted portion */ uint32_t *auth_start; /* pointer to start of auth. portion */ uint32_t *trailer; /* pointer to start of trailer */ unsigned int enc_octet_len = 0;/* number of octets in encrypted portion */ uint8_t *auth_tag = NULL; /* location of auth_tag within packet */ uint8_t tmp_tag[SRTP_MAX_TAG_LEN]; uint8_t tag_copy[SRTP_MAX_TAG_LEN]; srtp_err_status_t status; unsigned int auth_len; int tag_len; srtp_stream_ctx_t *stream; uint32_t prefix_len; uint32_t seq_num; int e_bit_in_packet; /* whether the E-bit was found in the packet */ int sec_serv_confidentiality; /* whether confidentiality was requested */ /* we assume the hdr is 32-bit aligned to start */ /* check that the length value is sane; we'll check again once we know the tag length, but we at least want to know that it is a positive value */ if (*pkt_octet_len < octets_in_rtcp_header + sizeof(srtcp_trailer_t)) return srtp_err_status_bad_param; /* * look up ssrc in srtp_stream list, and process the packet with * the appropriate stream. if we haven't seen this stream before, * there's only one key for this srtp_session, and the cipher * supports key-sharing, then we assume that a new stream using * that key has just started up */ stream = srtp_get_stream(ctx, hdr->ssrc); if (stream == NULL) { if (ctx->stream_template != NULL) { stream = ctx->stream_template; /* * check to see if stream_template has an EKT data structure, in * which case we initialize the template using the EKT policy * referenced by that data (which consists of decrypting the * master key from the EKT field) * * this function initializes a *provisional* stream, and this * stream should not be accepted until and unless the packet * passes its authentication check */ if (stream->ekt != NULL) { status = srtp_stream_init_from_ekt(stream, srtcp_hdr, *pkt_octet_len); if (status) return status; } debug_print(mod_srtp, "srtcp using provisional stream (SSRC: 0x%08x)", ntohl(hdr->ssrc)); } else { /* no template stream, so we return an error */ return srtp_err_status_no_ctx; } } /* get tag length from stream context */ tag_len = srtp_auth_get_tag_length(stream->rtcp_auth); /* check the packet length - it must contain at least a full RTCP header, an auth tag (if applicable), and the SRTCP encrypted flag and 31-bit index value */ if (*pkt_octet_len < (int) (octets_in_rtcp_header + tag_len + sizeof(srtcp_trailer_t))) { return srtp_err_status_bad_param; } /* * Check if this is an AEAD stream (GCM mode). If so, then dispatch * the request to our AEAD handler. */ if (stream->rtp_cipher->algorithm == SRTP_AES_128_GCM || stream->rtp_cipher->algorithm == SRTP_AES_256_GCM) { return srtp_unprotect_rtcp_aead(ctx, stream, srtcp_hdr, (unsigned int*)pkt_octet_len); } sec_serv_confidentiality = stream->rtcp_services == sec_serv_conf || stream->rtcp_services == sec_serv_conf_and_auth; /* * set encryption start, encryption length, and trailer */ enc_octet_len = *pkt_octet_len - (octets_in_rtcp_header + tag_len + sizeof(srtcp_trailer_t)); /* index & E (encryption) bit follow normal data. hdr->len is the number of words (32-bit) in the normal packet minus 1 */ /* This should point trailer to the word past the end of the normal data. */ /* This would need to be modified for optional mikey data */ /* * NOTE: trailer is 32-bit aligned because RTCP 'packets' are always * multiples of 32-bits (RFC 3550 6.1) */ trailer = (uint32_t *) ((char *) hdr + *pkt_octet_len -(tag_len + sizeof(srtcp_trailer_t))); e_bit_in_packet = (*((unsigned char *) trailer) & SRTCP_E_BYTE_BIT) == SRTCP_E_BYTE_BIT; if (e_bit_in_packet != sec_serv_confidentiality) { return srtp_err_status_cant_check; } if (sec_serv_confidentiality) { enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header; } else { enc_octet_len = 0; enc_start = NULL; /* this indicates that there's no encryption */ } /* * set the auth_start and auth_tag pointers to the proper locations * (note that srtcp *always* uses authentication, unlike srtp) */ auth_start = (uint32_t *)hdr; auth_len = *pkt_octet_len - tag_len; auth_tag = (uint8_t *)hdr + auth_len; /* * if EKT is in use, then we make a copy of the tag from the packet, * and then zeroize the location of the base tag * * we first re-position the auth_tag pointer so that it points to * the base tag */ if (stream->ekt) { auth_tag -= srtp_ekt_octets_after_base_tag(stream->ekt); memcpy(tag_copy, auth_tag, tag_len); octet_string_set_to_zero(auth_tag, tag_len); auth_tag = tag_copy; auth_len += tag_len; } /* * check the sequence number for replays */ /* this is easier than dealing with bitfield access */ seq_num = ntohl(*trailer) & SRTCP_INDEX_MASK; debug_print(mod_srtp, "srtcp index: %x", seq_num); status = srtp_rdb_check(&stream->rtcp_rdb, seq_num); if (status) return status; /* * if we're using aes counter mode, set nonce and seq */ if (stream->rtcp_cipher->type->id == SRTP_AES_ICM) { v128_t iv; iv.v32[0] = 0; iv.v32[1] = hdr->ssrc; /* still in network order! */ iv.v32[2] = htonl(seq_num >> 16); iv.v32[3] = htonl(seq_num << 16); status = srtp_cipher_set_iv(stream->rtcp_cipher, (uint8_t*)&iv, srtp_direction_decrypt); } else { v128_t iv; /* otherwise, just set the index to seq_num */ iv.v32[0] = 0; iv.v32[1] = 0; iv.v32[2] = 0; iv.v32[3] = htonl(seq_num); status = srtp_cipher_set_iv(stream->rtcp_cipher, (uint8_t*)&iv, srtp_direction_decrypt); } if (status) return srtp_err_status_cipher_fail; /* initialize auth func context */ srtp_auth_start(stream->rtcp_auth); /* run auth func over packet, put result into tmp_tag */ status = srtp_auth_compute(stream->rtcp_auth, (uint8_t *)auth_start, auth_len, tmp_tag); debug_print(mod_srtp, "srtcp computed tag: %s", srtp_octet_string_hex_string(tmp_tag, tag_len)); if (status) return srtp_err_status_auth_fail; /* compare the tag just computed with the one in the packet */ debug_print(mod_srtp, "srtcp tag from packet: %s", srtp_octet_string_hex_string(auth_tag, tag_len)); if (octet_string_is_eq(tmp_tag, auth_tag, tag_len)) return srtp_err_status_auth_fail; /* * if we're authenticating using a universal hash, put the keystream * prefix into the authentication tag */ prefix_len = srtp_auth_get_prefix_length(stream->rtcp_auth); if (prefix_len) { status = srtp_cipher_output(stream->rtcp_cipher, auth_tag, &prefix_len); debug_print(mod_srtp, "keystream prefix: %s", srtp_octet_string_hex_string(auth_tag, prefix_len)); if (status) return srtp_err_status_cipher_fail; } /* if we're decrypting, exor keystream into the message */ if (enc_start) { status = srtp_cipher_decrypt(stream->rtcp_cipher, (uint8_t *)enc_start, &enc_octet_len); if (status) return srtp_err_status_cipher_fail; } /* decrease the packet length by the length of the auth tag and seq_num */ *pkt_octet_len -= (tag_len + sizeof(srtcp_trailer_t)); /* * if EKT is in effect, subtract the EKT data out of the packet * length */ *pkt_octet_len -= srtp_ekt_octets_after_base_tag(stream->ekt); /* * verify that stream is for received traffic - this check will * detect SSRC collisions, since a stream that appears in both * srtp_protect() and srtp_unprotect() will fail this test in one of * those functions. * * we do this check *after* the authentication check, so that the * latter check will catch any attempts to fool us into thinking * that we've got a collision */ if (stream->direction != dir_srtp_receiver) { if (stream->direction == dir_unknown) { stream->direction = dir_srtp_receiver; } else { srtp_handle_event(ctx, stream, event_ssrc_collision); } } /* * 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srtp_get_user_data(srtp_t ctx) { return ctx->user_data; } /* * dtls keying for srtp */ srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtp(srtp_crypto_policy_t *policy, srtp_profile_t profile) { /* set SRTP policy from the SRTP profile in the key set */ switch(profile) { case srtp_profile_aes128_cm_sha1_80: srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(policy); break; case srtp_profile_aes128_cm_sha1_32: srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(policy); break; case srtp_profile_null_sha1_80: srtp_crypto_policy_set_null_cipher_hmac_sha1_80(policy); break; case srtp_profile_aes256_cm_sha1_80: srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(policy); break; case srtp_profile_aes256_cm_sha1_32: srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(policy); break; /* the following profiles are not (yet) supported */ case srtp_profile_null_sha1_32: default: return srtp_err_status_bad_param; } return srtp_err_status_ok; } srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtcp(srtp_crypto_policy_t *policy, srtp_profile_t profile) { /* set SRTP policy from the SRTP profile in the key set */ switch(profile) { case srtp_profile_aes128_cm_sha1_80: srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(policy); break; case srtp_profile_aes128_cm_sha1_32: /* We do not honor the 32-bit auth tag request since * this is not compliant with RFC 3711 */ srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(policy); break; case srtp_profile_null_sha1_80: srtp_crypto_policy_set_null_cipher_hmac_sha1_80(policy); break; case srtp_profile_aes256_cm_sha1_80: srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(policy); break; case srtp_profile_aes256_cm_sha1_32: /* We do not honor the 32-bit auth tag request since * this is not compliant with RFC 3711 */ srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(policy); break; /* the following profiles are not (yet) supported */ case srtp_profile_null_sha1_32: default: return srtp_err_status_bad_param; } return srtp_err_status_ok; } void srtp_append_salt_to_key(uint8_t *key, unsigned int bytes_in_key, uint8_t *salt, unsigned int bytes_in_salt) { memcpy(key + bytes_in_key, salt, bytes_in_salt); } unsigned int srtp_profile_get_master_key_length(srtp_profile_t profile) { switch(profile) { case srtp_profile_aes128_cm_sha1_80: return 16; break; case srtp_profile_aes128_cm_sha1_32: return 16; break; case srtp_profile_null_sha1_80: return 16; break; case srtp_profile_aes256_cm_sha1_80: return 32; break; case srtp_profile_aes256_cm_sha1_32: return 32; break; /* the following profiles are not (yet) supported */ case srtp_profile_null_sha1_32: default: return 0; /* indicate error by returning a zero */ } } unsigned int srtp_profile_get_master_salt_length(srtp_profile_t profile) { switch(profile) { case srtp_profile_aes128_cm_sha1_80: return 14; break; case srtp_profile_aes128_cm_sha1_32: return 14; break; case srtp_profile_null_sha1_80: return 14; break; case srtp_profile_aes256_cm_sha1_80: return 14; 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</Project>���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/����������������������������������������������0000775�0000000�0000000�00000000000�13041410345�0020532�5����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/dtls_srtp_driver.c����������������������������0000664�0000000�0000000�00000016701�13041410345�0024274�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * dtls_srtp_driver.c * * test driver for DTLS-SRTP functions * * David McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <stdio.h> /* for printf() */ #include "getopt_s.h" /* for local getopt() */ #include "srtp_priv.h" srtp_err_status_t test_dtls_srtp(void); srtp_hdr_t * srtp_create_test_packet(int pkt_octet_len, uint32_t ssrc); void usage(char *prog_name) { printf("usage: %s [ -t ][ -c ][ -v ][-d <debug_module> ]* [ -l ]\n" " -d <mod> turn on debugging module <mod>\n" " -l list debugging modules\n", prog_name); exit(1); } int main(int argc, char *argv[]) { unsigned do_list_mods = 0; int q; srtp_err_status_t err; printf("dtls_srtp_driver\n"); /* initialize srtp library */ err = srtp_init(); if (err) { printf("error: srtp init failed with error code %d\n", err); exit(1); } /* process input arguments */ while (1) { q = getopt_s(argc, argv, "ld:"); if (q == -1) break; switch (q) { case 'l': do_list_mods = 1; break; case 'd': err = srtp_crypto_kernel_set_debug_module(optarg_s, 1); if (err) { printf("error: set debug module (%s) failed\n", optarg_s); exit(1); } break; default: usage(argv[0]); } } if (do_list_mods) { err = srtp_crypto_kernel_list_debug_modules(); if (err) { printf("error: list of debug modules failed\n"); exit(1); } } printf("testing dtls_srtp..."); err = test_dtls_srtp(); if (err) { printf("\nerror (code %d)\n", err); exit(1); } printf("passed\n"); /* shut down srtp library */ err = srtp_shutdown(); if (err) { printf("error: srtp shutdown failed with error code %d\n", err); exit(1); } return 0; } srtp_err_status_t test_dtls_srtp(void) { srtp_hdr_t *test_packet; int test_packet_len = 80; srtp_t s; srtp_policy_t policy; uint8_t key[SRTP_MAX_KEY_LEN]; uint8_t salt[SRTP_MAX_KEY_LEN]; unsigned int key_len, salt_len; srtp_profile_t profile; srtp_err_status_t err; memset(&policy, 0x0, sizeof(srtp_policy_t)); /* create a 'null' SRTP session */ err = srtp_create(&s, NULL); if (err) return err; /* * verify that packet-processing functions behave properly - we * expect that these functions will return srtp_err_status_no_ctx */ test_packet = srtp_create_test_packet(80, 0xa5a5a5a5); if (test_packet == NULL) return srtp_err_status_alloc_fail; err = srtp_protect(s, test_packet, &test_packet_len); if (err != srtp_err_status_no_ctx) { printf("wrong return value from srtp_protect() (got code %d)\n", err); return srtp_err_status_fail; } err = srtp_unprotect(s, test_packet, &test_packet_len); if (err != srtp_err_status_no_ctx) { printf("wrong return value from srtp_unprotect() (got code %d)\n", err); return srtp_err_status_fail; } err = srtp_protect_rtcp(s, test_packet, &test_packet_len); if (err != srtp_err_status_no_ctx) { printf("wrong return value from srtp_protect_rtcp() (got code %d)\n", err); return srtp_err_status_fail; } err = srtp_unprotect_rtcp(s, test_packet, &test_packet_len); if (err != srtp_err_status_no_ctx) { printf("wrong return value from srtp_unprotect_rtcp() (got code %d)\n", err); return srtp_err_status_fail; } /* * set keys to known values for testing */ profile = srtp_profile_aes128_cm_sha1_80; key_len = srtp_profile_get_master_key_length(profile); salt_len = srtp_profile_get_master_salt_length(profile); memset(key, 0xff, key_len); memset(salt, 0xee, salt_len); srtp_append_salt_to_key(key, key_len, salt, salt_len); policy.key = key; /* initialize SRTP policy from profile */ err = srtp_crypto_policy_set_from_profile_for_rtp(&policy.rtp, profile); if (err) return err; err = srtp_crypto_policy_set_from_profile_for_rtcp(&policy.rtcp, profile); if (err) return err; policy.ssrc.type = ssrc_any_inbound; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; err = srtp_add_stream(s, &policy); if (err) return err; err = srtp_dealloc(s); if (err) return err; free(test_packet); return srtp_err_status_ok; } /* * srtp_create_test_packet(len, ssrc) returns a pointer to a * (malloced) example RTP packet whose data field has the length given * by pkt_octet_len and the SSRC value ssrc. The total length of the * packet is twelve octets longer, since the header is at the * beginning. There is room at the end of the packet for a trailer, * and the four octets following the packet are filled with 0xff * values to enable testing for overwrites. * * note that the location of the test packet can (and should) be * deallocated with the free() call once it is no longer needed. */ srtp_hdr_t * srtp_create_test_packet(int pkt_octet_len, uint32_t ssrc) { int i; uint8_t *buffer; srtp_hdr_t *hdr; int bytes_in_hdr = 12; /* allocate memory for test packet */ hdr = malloc(pkt_octet_len + bytes_in_hdr + SRTP_MAX_TRAILER_LEN + 4); if (!hdr) return NULL; hdr->version = 2; /* RTP version two */ hdr->p = 0; /* no padding needed */ hdr->x = 0; /* no header extension */ hdr->cc = 0; /* no CSRCs */ hdr->m = 0; /* marker bit */ hdr->pt = 0xf; /* payload type */ hdr->seq = htons(0x1234); /* sequence number */ hdr->ts = htonl(0xdecafbad); /* timestamp */ hdr->ssrc = htonl(ssrc); /* synch. source */ buffer = (uint8_t *)hdr; buffer += bytes_in_hdr; /* set RTP data to 0xab */ for (i=0; i < pkt_octet_len; i++) *buffer++ = 0xab; /* set post-data value to 0xffff to enable overrun checking */ for (i=0; i < SRTP_MAX_TRAILER_LEN+4; i++) *buffer++ = 0xff; return hdr; } ���������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/getopt_s.c������������������������������������0000664�0000000�0000000�00000006176�13041410345�0022534�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * getopt.c * * a minimal implementation of the getopt() function, written so that * test applications that use that function can run on non-POSIX * platforms * */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <stdlib.h> /* for NULL */ int optind_s = 0; char *optarg_s; #define GETOPT_FOUND_WITHOUT_ARGUMENT 2 #define GETOPT_FOUND_WITH_ARGUMENT 1 #define GETOPT_NOT_FOUND 0 static int getopt_check_character(char c, const char *string) { unsigned int max_string_len = 128; while (*string != 0) { if (max_string_len == 0) { return '?'; } if (*string++ == c) { if (*string == ':') { return GETOPT_FOUND_WITH_ARGUMENT; } else { return GETOPT_FOUND_WITHOUT_ARGUMENT; } } } return GETOPT_NOT_FOUND; } int getopt_s(int argc, char * const argv[], const char *optstring) { while (optind_s + 1 < argc) { char *string; /* move 'string' on to next argument */ optind_s++; string = argv[optind_s]; if (string == NULL) return '?'; /* NULL argument string */ if (string[0] != '-') return -1; /* found an unexpected character */ switch(getopt_check_character(string[1], optstring)) { case GETOPT_FOUND_WITH_ARGUMENT: if (optind_s + 1 < argc) { optind_s++; optarg_s = argv[optind_s]; return string[1]; } else { return '?'; /* argument missing */ } case GETOPT_FOUND_WITHOUT_ARGUMENT: return string[1]; case GETOPT_NOT_FOUND: default: return '?'; /* didn't find expected character */ break; } } return -1; } ��������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/lfsr.c����������������������������������������0000664�0000000�0000000�00000014632�13041410345�0021652�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * lfsr.c * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <stdio.h> #include "datatypes.h" uint32_t parity(uint32_t x) { x ^= (x >> 16); x ^= (x >> 8); x ^= (x >> 4); x ^= (x >> 2); x ^= (x >> 1); return x & 1; } /* typedef struct { */ /* uint32_t register[8]; */ /* } lfsr_t; */ void compute_period(uint32_t feedback_polynomial) { int i; v32_t lfsr; v32_t mask; mask.value = feedback_polynomial; lfsr.value = 1; printf("polynomial: %s\t", v32_bit_string(mask)); for (i=0; i < 256; i++) { /* printf("%s\n", v32_bit_string(lfsr)); */ if (parity(mask.value & lfsr.value)) lfsr.value = ((lfsr.value << 1) | 1) & 0xff; else lfsr.value = (lfsr.value << 1) & 0xff; /* now halt if we're back at the initial state */ if (lfsr.value == 1) { printf("period: %d\n", i); break; } } } uint32_t poly0 = 223; uint32_t polynomials[39] = { 31, 47, 55, 59, 61, 79, 87, 91, 103, 107, 109, 115, 117, 121, 143, 151, 157, 167, 171, 173, 179, 181, 185, 199, 203, 205, 211, 213, 227, 229, 233, 241, 127, 191, 223, 239, 247, 251, 253 }; char binary_string[32]; char * u32_bit_string(uint32_t x, unsigned int length) { unsigned int mask; int index; mask = 1 << length; index = 0; for (; mask > 0; mask >>= 1) if ((x & mask) == 0) binary_string[index++] = '0'; else binary_string[index++] = '1'; binary_string[index++] = 0; /* NULL terminate string */ return binary_string; } extern int octet_weight[256]; unsigned int weight(uint32_t poly) { int wt = 0; /* note: endian-ness makes no difference */ wt += octet_weight[poly & 0xff]; wt += octet_weight[(poly >> 8) & 0xff]; wt += octet_weight[(poly >> 16) & 0xff]; wt += octet_weight[(poly >> 24)]; return wt; } #define MAX_PERIOD 65535 #define debug_print 0 int period(uint32_t poly) { int i; uint32_t x; /* set lfsr to 1 */ x = 1; #if debug_print printf("%d:\t%s\n", 0, u32_bit_string(x,8)); #endif for (i=1; i < MAX_PERIOD; i++) { if (x & 1) x = (x >> 1) ^ poly; else x = (x >> 1); #if debug_print /* print for a sanity check */ printf("%d:\t%s\n", i, u32_bit_string(x,8)); #endif /* check for return to original value */ if (x == 1) return i; } return i; } /* * weight distribution computes the weight distribution of the * code generated by the polynomial poly */ #define MAX_LEN 8 #define MAX_WEIGHT (1 << MAX_LEN) int A[MAX_WEIGHT+1]; void weight_distribution2(uint32_t poly, int *A) { int i; uint32_t x; /* zeroize array */ for (i=0; i < MAX_WEIGHT+1; i++) A[i] = 0; /* loop over all input sequences */ /* set lfsr to 1 */ x = 1; #if debug_print printf("%d:\t%s\n", 0, u32_bit_string(x,8)); #endif for (i=1; i < MAX_PERIOD; i++) { if (x & 1) x = (x >> 1) ^ poly; else x = (x >> 1); #if debug_print /* print for a sanity check */ printf("%d:\t%s\n", i, u32_bit_string(x,8)); #endif /* increment weight */ wt += (x & 1); /* check for return to original value */ if (x == 1) break; } /* set zero */ A[0] = 0; } void weight_distribution(uint32_t poly, int *A) { int i; uint32_t x; /* zeroize array */ for (i=0; i < MAX_WEIGHT+1; i++) A[i] = 0; /* set lfsr to 1 */ x = 1; #if debug_print printf("%d:\t%s\n", 0, u32_bit_string(x,8)); #endif for (i=1; i < MAX_PERIOD; i++) { if (x & 1) x = (x >> 1) ^ poly; else x = (x >> 1); #if debug_print /* print for a sanity check */ printf("%d:\t%s\n", i, u32_bit_string(x,8)); #endif /* compute weight, increment proper element */ A[weight(x)]++; /* check for return to original value */ if (x == 1) break; } /* set zero */ A[0] = 0; } int main () { int i,j; v32_t x; v32_t p; /* originally 0xaf */ p.value = 0x9; printf("polynomial: %s\tperiod: %d\n", u32_bit_string(p.value,8), period(p.value)); /* compute weight distribution */ weight_distribution(p.value, A); /* print weight distribution */ for (i=0; i <= 8; i++) { printf("A[%d]: %d\n", i, A[i]); } #if 0 for (i=0; i < 39; i++) { printf("polynomial: %s\tperiod: %d\n", u32_bit_string(polynomials[i],8), period(polynomials[i])); /* compute weight distribution */ weight_distribution(p.value, A); /* print weight distribution */ for (j=0; j <= 8; j++) { printf("A[%d]: %d\n", j, A[j]); } } #endif { int bits = 8; uint32_t y; for (y=0; y < (1 << bits); y++) { printf("polynomial: %s\tweight: %d\tperiod: %d\n", u32_bit_string(y,bits), weight(y), period(y)); /* compute weight distribution */ weight_distribution(y, A); /* print weight distribution */ for (j=0; j <= 8; j++) { printf("A[%d]: %d\n", j, A[j]); } } } return 0; } ������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rdbx_driver.c���������������������������������0000664�0000000�0000000�00000022347�13041410345�0023220�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rdbx_driver.c * * driver for the rdbx implementation (replay database with extended range) * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> /* for printf() */ #include "getopt_s.h" /* for local getopt() */ #include "rdbx.h" #ifdef ROC_TEST #error "srtp_rdbx_t won't work with ROC_TEST - bitmask same size as seq_median" #endif #include "ut_sim.h" srtp_err_status_t test_replay_dbx(int num_trials, unsigned long ws); double rdbx_check_adds_per_second(int num_trials, unsigned long ws); void usage(char *prog_name) { printf("usage: %s [ -t | -v ]\n", prog_name); exit(255); } int main (int argc, char *argv[]) { double rate; srtp_err_status_t status; int q; unsigned do_timing_test = 0; unsigned do_validation = 0; /* process input arguments */ while (1) { q = getopt_s(argc, argv, "tv"); if (q == -1) break; switch (q) { case 't': do_timing_test = 1; break; case 'v': do_validation = 1; break; default: usage(argv[0]); } } printf("rdbx (replay database w/ extended range) test driver\n" "David A. McGrew\n" "Cisco Systems, Inc.\n"); if (!do_validation && !do_timing_test) usage(argv[0]); if (do_validation) { printf("testing srtp_rdbx_t (ws=128)...\n"); status = test_replay_dbx(1 << 12, 128); if (status) { printf("failed\n"); exit(1); } printf("passed\n"); printf("testing srtp_rdbx_t (ws=1024)...\n"); status = test_replay_dbx(1 << 12, 1024); if (status) { printf("failed\n"); exit(1); } printf("passed\n"); } if (do_timing_test) { rate = rdbx_check_adds_per_second(1 << 18, 128); printf("rdbx_check/replay_adds per second (ws=128): %e\n", rate); rate = rdbx_check_adds_per_second(1 << 18, 1024); printf("rdbx_check/replay_adds per second (ws=1024): %e\n", rate); } return 0; } void print_rdbx(srtp_rdbx_t *rdbx) { char buf[2048]; printf("rdbx: {%llu, %s}\n", (unsigned long long)(rdbx->index), bitvector_bit_string(&rdbx->bitmask, buf, sizeof(buf)) ); } /* * rdbx_check_add(rdbx, idx) checks a known-to-be-good idx against * rdbx, then adds it. if a failure is detected (i.e., the check * indicates that the value is already in rdbx) then * srtp_err_status_algo_fail is returned. * */ srtp_err_status_t rdbx_check_add(srtp_rdbx_t *rdbx, uint32_t idx) { int delta; srtp_xtd_seq_num_t est; delta = srtp_index_guess(&rdbx->index, &est, idx); if (srtp_rdbx_check(rdbx, delta) != srtp_err_status_ok) { printf("replay_check failed at index %u\n", idx); return srtp_err_status_algo_fail; } /* * in practice, we'd authenticate the packet containing idx, using * the estimated value est, at this point */ if (srtp_rdbx_add_index(rdbx, delta) != srtp_err_status_ok) { printf("rdbx_add_index failed at index %u\n", idx); return srtp_err_status_algo_fail; } return srtp_err_status_ok; } /* * rdbx_check_expect_failure(srtp_rdbx_t *rdbx, uint32_t idx) * * checks that a sequence number idx is in the replay database * and thus will be rejected */ srtp_err_status_t rdbx_check_expect_failure(srtp_rdbx_t *rdbx, uint32_t idx) { int delta; srtp_xtd_seq_num_t est; srtp_err_status_t status; delta = srtp_index_guess(&rdbx->index, &est, idx); status = srtp_rdbx_check(rdbx, delta); if (status == srtp_err_status_ok) { printf("delta: %d ", delta); printf("replay_check failed at index %u (false positive)\n", idx); return srtp_err_status_algo_fail; } return srtp_err_status_ok; } srtp_err_status_t rdbx_check_add_unordered(srtp_rdbx_t *rdbx, uint32_t idx) { int delta; srtp_xtd_seq_num_t est; srtp_err_status_t rstat; delta = srtp_index_guess(&rdbx->index, &est, idx); rstat = srtp_rdbx_check(rdbx, delta); if ((rstat != srtp_err_status_ok) && (rstat != srtp_err_status_replay_old)) { printf("replay_check_add_unordered failed at index %u\n", idx); return srtp_err_status_algo_fail; } if (rstat == srtp_err_status_replay_old) { return srtp_err_status_ok; } if (srtp_rdbx_add_index(rdbx, delta) != srtp_err_status_ok) { printf("rdbx_add_index failed at index %u\n", idx); return srtp_err_status_algo_fail; } return srtp_err_status_ok; } srtp_err_status_t test_replay_dbx(int num_trials, unsigned long ws) { srtp_rdbx_t rdbx; uint32_t idx, ircvd; ut_connection utc; srtp_err_status_t status; int num_fp_trials; status = srtp_rdbx_init(&rdbx, ws); if (status) { printf("replay_init failed with error code %d\n", status); exit(1); } /* * test sequential insertion */ printf("\ttesting sequential insertion..."); for (idx=0; (int) idx < num_trials; idx++) { status = rdbx_check_add(&rdbx, idx); if (status) return status; } printf("passed\n"); /* * test for false positives by checking all of the index * values which we've just added * * note that we limit the number of trials here, since allowing the * rollover counter to roll over would defeat this test */ num_fp_trials = num_trials % 0x10000; if (num_fp_trials == 0) { printf("warning: no false positive tests performed\n"); } printf("\ttesting for false positives..."); for (idx=0; (int) idx < num_fp_trials; idx++) { status = rdbx_check_expect_failure(&rdbx, idx); if (status) return status; } printf("passed\n"); /* re-initialize */ srtp_rdbx_dealloc(&rdbx); if (srtp_rdbx_init(&rdbx, ws) != srtp_err_status_ok) { printf("replay_init failed\n"); return srtp_err_status_init_fail; } /* * test non-sequential insertion * * this test covers only fase negatives, since the values returned * by ut_next_index(...) are distinct */ ut_init(&utc); printf("\ttesting non-sequential insertion..."); for (idx=0; (int) idx < num_trials; idx++) { ircvd = ut_next_index(&utc); status = rdbx_check_add_unordered(&rdbx, ircvd); if (status) return status; status = rdbx_check_expect_failure(&rdbx, ircvd); if (status) return status; } printf("passed\n"); /* re-initialize */ srtp_rdbx_dealloc(&rdbx); if (srtp_rdbx_init(&rdbx, ws) != srtp_err_status_ok) { printf("replay_init failed\n"); return srtp_err_status_init_fail; } /* * test insertion with large gaps. * check for false positives for each insertion. */ printf("\ttesting insertion with large gaps..."); for (idx=0, ircvd=0; (int) idx < num_trials; idx++, ircvd += (1 << (rand() % 12))) { status = rdbx_check_add(&rdbx, ircvd); if (status) return status; status = rdbx_check_expect_failure(&rdbx, ircvd); if (status) return status; } printf("passed\n"); srtp_rdbx_dealloc(&rdbx); return srtp_err_status_ok; } #include <time.h> /* for clock() */ #include <stdlib.h> /* for random() */ double rdbx_check_adds_per_second(int num_trials, unsigned long ws) { uint32_t i; int delta; srtp_rdbx_t rdbx; srtp_xtd_seq_num_t est; clock_t timer; int failures; /* count number of failures */ if (srtp_rdbx_init(&rdbx, ws) != srtp_err_status_ok) { printf("replay_init failed\n"); exit(1); } failures = 0; timer = clock(); for(i=0; (int) i < num_trials; i++) { delta = srtp_index_guess(&rdbx.index, &est, i); if (srtp_rdbx_check(&rdbx, delta) != srtp_err_status_ok) ++failures; else if (srtp_rdbx_add_index(&rdbx, delta) != srtp_err_status_ok) ++failures; } timer = clock() - timer; printf("number of failures: %d \n", failures); srtp_rdbx_dealloc(&rdbx); return (double) CLOCKS_PER_SEC * num_trials / timer; } �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/replay_driver.c�������������������������������0000664�0000000�0000000�00000015166�13041410345�0023556�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * replay_driver.c * * A driver for the replay_database implementation * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> #include "rdb.h" #include "ut_sim.h" /* * num_trials defines the number of trials that are used in the * validation functions below */ unsigned num_trials = 1 << 16; srtp_err_status_t test_rdb_db(void); double rdb_check_adds_per_second(void); int main (void) { srtp_err_status_t err; printf("testing anti-replay database (srtp_rdb_t)...\n"); err = test_rdb_db(); if (err) { printf("failed\n"); exit(1); } printf("done\n"); printf("rdb_check/rdb_adds per second: %e\n", rdb_check_adds_per_second()); return 0; } void print_rdb(srtp_rdb_t *rdb) { printf("rdb: {%u, %s}\n", rdb->window_start, v128_bit_string(&rdb->bitmask)); } srtp_err_status_t rdb_check_add(srtp_rdb_t *rdb, uint32_t idx) { if (srtp_rdb_check(rdb, idx) != srtp_err_status_ok) { printf("rdb_check failed at index %u\n", idx); return srtp_err_status_fail; } if (srtp_rdb_add_index(rdb, idx) != srtp_err_status_ok) { printf("rdb_add_index failed at index %u\n", idx); return srtp_err_status_fail; } return srtp_err_status_ok; } srtp_err_status_t rdb_check_expect_failure(srtp_rdb_t *rdb, uint32_t idx) { srtp_err_status_t err; err = srtp_rdb_check(rdb, idx); if ((err != srtp_err_status_replay_old) && (err != srtp_err_status_replay_fail)) { printf("rdb_check failed at index %u (false positive)\n", idx); return srtp_err_status_fail; } return srtp_err_status_ok; } srtp_err_status_t rdb_check_add_unordered(srtp_rdb_t *rdb, uint32_t idx) { srtp_err_status_t rstat; /* printf("index: %u\n", idx); */ rstat = srtp_rdb_check(rdb, idx); if ((rstat != srtp_err_status_ok) && (rstat != srtp_err_status_replay_old)) { printf("rdb_check_add_unordered failed at index %u\n", idx); return rstat; } if (rstat == srtp_err_status_replay_old) { return srtp_err_status_ok; } if (srtp_rdb_add_index(rdb, idx) != srtp_err_status_ok) { printf("rdb_add_index failed at index %u\n", idx); return srtp_err_status_fail; } return srtp_err_status_ok; } srtp_err_status_t test_rdb_db() { srtp_rdb_t rdb; uint32_t idx, ircvd; ut_connection utc; srtp_err_status_t err; if (srtp_rdb_init(&rdb) != srtp_err_status_ok) { printf("rdb_init failed\n"); return srtp_err_status_init_fail; } /* test sequential insertion */ for (idx=0; idx < num_trials; idx++) { err = rdb_check_add(&rdb, idx); if (err) return err; } /* test for false positives */ for (idx=0; idx < num_trials; idx++) { err = rdb_check_expect_failure(&rdb, idx); if (err) return err; } /* re-initialize */ if (srtp_rdb_init(&rdb) != srtp_err_status_ok) { printf("rdb_init failed\n"); return srtp_err_status_fail; } /* test non-sequential insertion */ ut_init(&utc); for (idx=0; idx < num_trials; idx++) { ircvd = ut_next_index(&utc); err = rdb_check_add_unordered(&rdb, ircvd); if (err) return err; err = rdb_check_expect_failure(&rdb, ircvd); if (err) return err; } /* re-initialize */ if (srtp_rdb_init(&rdb) != srtp_err_status_ok) { printf("rdb_init failed\n"); return srtp_err_status_fail; } /* test insertion with large gaps */ for (idx=0, ircvd=0; idx < num_trials; idx++, ircvd += (1 << (rand() % 10))) { err = rdb_check_add(&rdb, ircvd); if (err) return err; err = rdb_check_expect_failure(&rdb, ircvd); if (err) return err; } /* re-initialize */ if (srtp_rdb_init(&rdb) != srtp_err_status_ok) { printf("rdb_init failed\n"); return srtp_err_status_fail; } /* test loss of first 513 packets */ for (idx=0; idx < num_trials; idx++) { err = rdb_check_add(&rdb, idx + 513); if (err) return err; } /* test for false positives */ for (idx=0; idx < num_trials + 513; idx++) { err = rdb_check_expect_failure(&rdb, idx); if (err) return err; } return srtp_err_status_ok; } #include <time.h> /* for clock() */ #include <stdlib.h> /* for random() */ #define REPLAY_NUM_TRIALS 10000000 double rdb_check_adds_per_second(void) { uint32_t i; srtp_rdb_t rdb; clock_t timer; int failures = 0; /* count number of failures */ if (srtp_rdb_init(&rdb) != srtp_err_status_ok) { printf("rdb_init failed\n"); exit(1); } timer = clock(); for(i=0; i < REPLAY_NUM_TRIALS; i+=3) { if (srtp_rdb_check(&rdb, i+2) != srtp_err_status_ok) ++failures; if (srtp_rdb_add_index(&rdb, i+2) != srtp_err_status_ok) ++failures; if (srtp_rdb_check(&rdb, i+1) != srtp_err_status_ok) ++failures; if (srtp_rdb_add_index(&rdb, i+1) != srtp_err_status_ok) ++failures; if (srtp_rdb_check(&rdb, i) != srtp_err_status_ok) ++failures; if (srtp_rdb_add_index(&rdb, i) != srtp_err_status_ok) ++failures; } timer = clock() - timer; return (double) CLOCKS_PER_SEC * REPLAY_NUM_TRIALS / timer; } ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/roc_driver.c����������������������������������0000664�0000000�0000000�00000011172�13041410345�0023036�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * roc_driver.c * * test driver for rollover counter replay implementation * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> /* * defining ROC_TEST causes small datatypes to be used in * srtp_xtd_seq_num_t - this allows the functions to be exhaustively tested. */ #if ROC_NEEDS_TO_BE_TESTED #define ROC_TEST #endif #include "rdbx.h" #include "ut_sim.h" srtp_err_status_t roc_test(int num_trials); int main (void) { srtp_err_status_t status; printf("rollover counter test driver\n" "David A. McGrew\n" "Cisco Systems, Inc.\n"); printf("testing index functions..."); status = roc_test(1 << 18); if (status) { printf("failed\n"); exit(status); } printf("passed\n"); return 0; } #define ROC_VERBOSE 0 srtp_err_status_t roc_test(int num_trials) { srtp_xtd_seq_num_t local, est, ref; ut_connection utc; int i, num_bad_est = 0; int delta; uint32_t ircvd; double failure_rate; srtp_index_init(&local); srtp_index_init(&ref); srtp_index_init(&est); printf("\n\ttesting sequential insertion..."); for (i=0; i < 2048; i++) { delta = srtp_index_guess(&local, &est, (uint16_t) ref); #if ROC_VERBOSE printf("%lld, %lld, %d\n", ref, est, i); #endif if (ref != est) { #if ROC_VERBOSE printf(" *bad estimate*\n"); #endif ++num_bad_est; } srtp_index_advance(&ref, 1); } failure_rate = (double) num_bad_est / num_trials; if (failure_rate > 0.01) { printf("error: failure rate too high (%d bad estimates in %d trials)\n", num_bad_est, num_trials); return srtp_err_status_algo_fail; } printf("done\n"); printf("\ttesting non-sequential insertion..."); srtp_index_init(&local); srtp_index_init(&ref); srtp_index_init(&est); ut_init(&utc); for (i=0; i < num_trials; i++) { /* get next seq num from unreliable transport simulator */ ircvd = ut_next_index(&utc); /* set ref to value of ircvd */ ref = ircvd; /* estimate index based on low bits of ircvd */ delta = srtp_index_guess(&local, &est, (uint16_t) ref); #if ROC_VERBOSE printf("ref: %lld, local: %lld, est: %lld, ircvd: %d, delta: %d\n", ref, local, est, ircvd, delta); #endif if (local + delta != est) { printf(" *bad delta*: local %llu + delta %d != est %llu\n", (unsigned long long)local, delta, (unsigned long long)est); return srtp_err_status_algo_fail; } /* now update local srtp_xtd_seq_num_t as necessary */ if (delta > 0) srtp_index_advance(&local, delta); if (ref != est) { #if ROC_VERBOSE printf(" *bad estimate*\n"); #endif /* record failure event */ ++num_bad_est; /* reset local value to correct value */ local = ref; } } failure_rate = (double) num_bad_est / num_trials; if (failure_rate > 0.01) { printf("error: failure rate too high (%d bad estimates in %d trials)\n", num_bad_est, num_trials); return srtp_err_status_algo_fail; } printf("done\n"); return srtp_err_status_ok; } ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rtp.c�����������������������������������������0000664�0000000�0000000�00000014051�13041410345�0021504�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rtp.c * * library functions for the real-time transport protocol * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include "rtp_priv.h" #include <stdio.h> #include <string.h> #include <sys/types.h> #ifdef HAVE_SYS_SOCKET_H # include <sys/socket.h> #endif #define PRINT_DEBUG 0 /* set to 1 to print out debugging data */ #define VERBOSE_DEBUG 0 /* set to 1 to print out more data */ int rtp_sendto(rtp_sender_t sender, const void* msg, int len) { int octets_sent; srtp_err_status_t stat; int pkt_len = len + RTP_HEADER_LEN; /* marshal data */ strncpy(sender->message.body, msg, len); /* update header */ sender->message.header.seq = ntohs(sender->message.header.seq) + 1; sender->message.header.seq = htons(sender->message.header.seq); sender->message.header.ts = ntohl(sender->message.header.ts) + 1; sender->message.header.ts = htonl(sender->message.header.ts); /* apply srtp */ stat = srtp_protect(sender->srtp_ctx, &sender->message.header, &pkt_len); if (stat) { #if PRINT_DEBUG fprintf(stderr, "error: srtp protection failed with code %d\n", stat); #endif return -1; } #if VERBOSE_DEBUG srtp_print_packet(&sender->message.header, pkt_len); #endif octets_sent = sendto(sender->socket, (void*)&sender->message, pkt_len, 0, (struct sockaddr *)&sender->addr, sizeof (struct sockaddr_in)); if (octets_sent != pkt_len) { #if PRINT_DEBUG fprintf(stderr, "error: couldn't send message %s", (char *)msg); perror(""); #endif } return octets_sent; } int rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len) { int octets_recvd; srtp_err_status_t stat; octets_recvd = recvfrom(receiver->socket, (void *)&receiver->message, *len, 0, (struct sockaddr *) NULL, 0); if (octets_recvd == -1) { *len = 0; return -1; } /* verify rtp header */ if (receiver->message.header.version != 2) { *len = 0; return -1; } #if PRINT_DEBUG fprintf(stderr, "%d octets received from SSRC %u\n", octets_recvd, receiver->message.header.ssrc); #endif #if VERBOSE_DEBUG srtp_print_packet(&receiver->message.header, octets_recvd); #endif /* apply srtp */ stat = srtp_unprotect(receiver->srtp_ctx, &receiver->message.header, &octets_recvd); if (stat) { fprintf(stderr, "error: srtp unprotection failed with code %d%s\n", stat, stat == srtp_err_status_replay_fail ? " (replay check failed)" : stat == srtp_err_status_auth_fail ? " (auth check failed)" : ""); return -1; } strncpy(msg, receiver->message.body, octets_recvd); return octets_recvd; } int rtp_sender_init(rtp_sender_t sender, int sock, struct sockaddr_in addr, unsigned int ssrc) { /* set header values */ sender->message.header.ssrc = htonl(ssrc); sender->message.header.ts = 0; sender->message.header.seq = (uint16_t) rand(); sender->message.header.m = 0; sender->message.header.pt = 0x1; sender->message.header.version = 2; sender->message.header.p = 0; sender->message.header.x = 0; sender->message.header.cc = 0; /* set other stuff */ sender->socket = sock; sender->addr = addr; return 0; } int rtp_receiver_init(rtp_receiver_t rcvr, int sock, struct sockaddr_in addr, unsigned int ssrc) { /* set header values */ rcvr->message.header.ssrc = htonl(ssrc); rcvr->message.header.ts = 0; rcvr->message.header.seq = 0; rcvr->message.header.m = 0; rcvr->message.header.pt = 0x1; rcvr->message.header.version = 2; rcvr->message.header.p = 0; rcvr->message.header.x = 0; rcvr->message.header.cc = 0; /* set other stuff */ rcvr->socket = sock; rcvr->addr = addr; return 0; } int rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy) { return srtp_create(&sender->srtp_ctx, policy); } int rtp_sender_deinit_srtp(rtp_sender_t sender) { return srtp_dealloc(sender->srtp_ctx); } int rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy) { return srtp_create(&sender->srtp_ctx, policy); } int rtp_receiver_deinit_srtp(rtp_receiver_t sender) { return srtp_dealloc(sender->srtp_ctx); } rtp_sender_t rtp_sender_alloc(void) { return (rtp_sender_t)malloc(sizeof(rtp_sender_ctx_t)); } void rtp_sender_dealloc(rtp_sender_t rtp_ctx) { free(rtp_ctx); } rtp_receiver_t rtp_receiver_alloc(void) { return (rtp_receiver_t)malloc(sizeof(rtp_receiver_ctx_t)); } void rtp_receiver_dealloc(rtp_receiver_t rtp_ctx) { free(rtp_ctx); } ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rtp_decoder.c���������������������������������0000664�0000000�0000000�00000034004�13041410345�0023171�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rtp_decoder.c * * decoder structures and functions for SRTP pcap decoder * * Example: * $ wget --no-check-certificate https://raw.githubusercontent.com/gteissier/srtp-decrypt/master/marseillaise-srtp.pcap * $ ./test/rtp_decoder -a -t 0 -e 128 -b aSBrbm93IGFsbCB5b3VyIGxpdHRsZSBzZWNyZXRz \ * < ~/marseillaise-srtp.pcap | text2pcap -t "%M:%S." -u 10000,10000 - - > ./marseillaise-rtp.pcap * * Bernardo Torres <bernardo@torresautomacao.com.br> * * Some structure and code from https://github.com/gteissier/srtp-decrypt */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include "getopt_s.h" /* for local getopt() */ #include <assert.h> /* for assert() */ #include <pcap.h> #include "rtp_decoder.h" #include "util.h" #define MAX_KEY_LEN 96 #define MAX_FILTER 256 int main (int argc, char *argv[]) { char errbuf[PCAP_ERRBUF_SIZE]; bpf_u_int32 pcap_net = 0; pcap_t *pcap_handle; #if BEW struct sockaddr_in local; #endif srtp_sec_serv_t sec_servs = sec_serv_none; int c; int key_size = 128; int tag_size = 8; int gcm_on = 0; char *input_key = NULL; int b64_input = 0; char key[MAX_KEY_LEN]; struct bpf_program fp; char filter_exp[MAX_FILTER] = ""; rtp_decoder_t dec; srtp_policy_t policy; srtp_err_status_t status; int len; int expected_len; int do_list_mods = 0; fprintf(stderr, "Using %s [0x%x]\n", srtp_get_version_string(), srtp_get_version()); /* initialize srtp library */ status = srtp_init(); if (status) { fprintf(stderr, "error: srtp initialization failed with error code %d\n", status); exit(1); } /* check args */ while (1) { c = getopt_s(argc, argv, "b:k:gt:ae:ld:f:"); if (c == -1) { break; } switch (c) { case 'b': b64_input = 1; /* fall thru */ case 'k': input_key = optarg_s; break; case 'e': key_size = atoi(optarg_s); if (key_size != 128 && key_size != 256) { fprintf(stderr, "error: encryption key size must be 128 or 256 (%d)\n", key_size); exit(1); } input_key = malloc(key_size); sec_servs |= sec_serv_conf; break; case 't': tag_size = atoi(optarg_s); if (tag_size != 8 && tag_size != 16) { fprintf(stderr, "error: GCM tag size must be 8 or 16 (%d)\n", tag_size); //exit(1); } break; case 'a': sec_servs |= sec_serv_auth; break; case 'g': gcm_on = 1; sec_servs |= sec_serv_auth; break; case 'd': status = srtp_crypto_kernel_set_debug_module(optarg_s, 1); if (status) { fprintf(stderr, "error: set debug module (%s) failed\n", optarg_s); exit(1); } break; case 'f': if(strlen(optarg_s) > MAX_FILTER){ fprintf(stderr, "error: filter bigger than %d characters\n", MAX_FILTER); exit(1); } fprintf(stderr, "Setting filter as %s\n", optarg_s); strcpy(filter_exp, optarg_s); break; case 'l': do_list_mods = 1; break; default: usage(argv[0]); } } if (do_list_mods) { status = srtp_crypto_kernel_list_debug_modules(); if (status) { fprintf(stderr, "error: list of debug modules failed\n"); exit(1); } return 0; } if ((sec_servs && !input_key) || (!sec_servs && input_key)) { /* * a key must be provided if and only if security services have * been requested */ if(input_key == NULL){ fprintf(stderr, "key not provided\n"); } if(!sec_servs){ fprintf(stderr, "no secservs\n"); } fprintf(stderr, "provided\n"); usage(argv[0]); } /* report security services selected on the command line */ fprintf(stderr, "security services: "); if (sec_servs & sec_serv_conf) fprintf(stderr, "confidentiality "); if (sec_servs & sec_serv_auth) fprintf(stderr, "message authentication"); if (sec_servs == sec_serv_none) fprintf(stderr, "none"); fprintf(stderr, "\n"); /* set up the srtp policy and master key */ if (sec_servs) { /* * create policy structure, using the default mechanisms but * with only the security services requested on the command line, * using the right SSRC value */ switch (sec_servs) { case sec_serv_conf_and_auth: if (gcm_on) { #ifdef OPENSSL switch (key_size) { case 128: srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_gcm_256_8_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_256_8_auth(&policy.rtcp); break; } #else fprintf(stderr, "error: GCM mode only supported when using the OpenSSL crypto engine.\n"); return 0; #endif } else { switch (key_size) { case 128: srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; } } break; case sec_serv_conf: if (gcm_on) { fprintf(stderr, "error: GCM mode must always be used with auth enabled\n"); return -1; } else { switch (key_size) { case 128: srtp_crypto_policy_set_aes_cm_128_null_auth(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_cm_256_null_auth(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; } } break; case sec_serv_auth: if (gcm_on) { #ifdef OPENSSL switch (key_size) { case 128: srtp_crypto_policy_set_aes_gcm_128_8_only_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_8_only_auth(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_gcm_256_8_only_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_256_8_only_auth(&policy.rtcp); break; } #else printf("error: GCM mode only supported when using the OpenSSL crypto engine.\n"); return 0; #endif } else { srtp_crypto_policy_set_null_cipher_hmac_sha1_80(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); } break; default: fprintf(stderr, "error: unknown security service requested\n"); return -1; } policy.key = (uint8_t *) key; policy.ekt = NULL; policy.next = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.rtp.sec_serv = sec_servs; policy.rtcp.sec_serv = sec_servs; //sec_serv_none; /* we don't do RTCP anyway */ fprintf(stderr, "setting tag len %d\n", tag_size); policy.rtp.auth_tag_len = tag_size; if (gcm_on && tag_size != 8) { fprintf(stderr, "setted tag len %d\n", tag_size); policy.rtp.auth_tag_len = tag_size; } /* * read key from hexadecimal or base64 on command line into an octet string */ if (b64_input) { int pad; expected_len = policy.rtp.cipher_key_len*4/3; len = base64_string_to_octet_string(key, &pad, input_key, expected_len); if (pad != 0) { fprintf(stderr, "error: padding in base64 unexpected\n"); exit(1); } } else { expected_len = policy.rtp.cipher_key_len*2; len = hex_string_to_octet_string(key, input_key, expected_len); } /* check that hex string is the right length */ if (len < expected_len) { fprintf(stderr, "error: too few digits in key/salt " "(should be %d digits, found %d)\n", expected_len, len); exit(1); } if (strlen(input_key) > policy.rtp.cipher_key_len*2) { fprintf(stderr, "error: too many digits in key/salt " "(should be %d hexadecimal digits, found %u)\n", policy.rtp.cipher_key_len*2, (unsigned)strlen(input_key)); exit(1); } fprintf(stderr, "set master key/salt to %s/", octet_string_hex_string(key, 16)); fprintf(stderr, "%s\n", octet_string_hex_string(key+16, 14)); } else { fprintf(stderr, "error: neither encryption or authentication were selected"); exit(1); } pcap_handle = pcap_open_offline("-", errbuf); if (!pcap_handle) { fprintf(stderr, "libpcap failed to open file '%s'\n", errbuf); exit(1); } assert(pcap_handle != NULL); if ((pcap_compile(pcap_handle, &fp, filter_exp, 1, pcap_net)) == -1){ fprintf(stderr, "Couldn't parse filter %s: %s\n", filter_exp, pcap_geterr(pcap_handle)); return (2); } if (pcap_setfilter(pcap_handle, &fp) == -1){ fprintf(stderr, "couldn't install filter %s: %s\n", filter_exp, pcap_geterr(pcap_handle)); return (2); } dec = rtp_decoder_alloc(); if (dec == NULL) { fprintf(stderr, "error: malloc() failed\n"); exit(1); } fprintf(stderr, "Starting decoder\n"); rtp_decoder_init(dec, policy); pcap_loop(pcap_handle, 0, rtp_decoder_handle_pkt, (u_char *)dec); rtp_decoder_deinit_srtp(dec); rtp_decoder_dealloc(dec); status = srtp_shutdown(); if (status) { fprintf(stderr, "error: srtp shutdown failed with error code %d\n", status); exit(1); } return 0; } void usage(char *string) { fprintf(stderr, "usage: %s [-d <debug>]* [[-k][-b] <key> [-a][-e]]\n" "or %s -l\n" "where -a use message authentication\n" " -e <key size> use encryption (use 128 or 256 for key size)\n" " -g Use AES-GCM mode (must be used with -e)\n" " -t <tag size> Tag size to use in GCM mode (use 8 or 16)\n" " -k <key> sets the srtp master key given in hexadecimal\n" " -b <key> sets the srtp master key given in base64\n" " -l list debug modules\n" " -f \"<pcap filter>\" to filter only the desired SRTP packets\n" " -d <debug> turn on debugging for module <debug>\n", string, string); exit(1); } rtp_decoder_t rtp_decoder_alloc(void) { return (rtp_decoder_t)malloc(sizeof(rtp_decoder_ctx_t)); } void rtp_decoder_dealloc(rtp_decoder_t rtp_ctx) { free(rtp_ctx); } srtp_err_status_t rtp_decoder_init_srtp(rtp_decoder_t decoder, unsigned int ssrc) { decoder->policy.ssrc.value = htonl(ssrc); return srtp_create(&decoder->srtp_ctx, &decoder->policy); } int rtp_decoder_deinit_srtp(rtp_decoder_t decoder) { return srtp_dealloc(decoder->srtp_ctx); } int rtp_decoder_init(rtp_decoder_t dcdr, srtp_policy_t policy){ dcdr->rtp_offset = DEFAULT_RTP_OFFSET; dcdr->srtp_ctx = NULL; dcdr->start_tv.tv_usec = 0; dcdr->start_tv.tv_sec = 0; dcdr->frame_nr = -1; dcdr->policy = policy; dcdr->policy.ssrc.type = ssrc_specific; return 0; } /* * decodes key as base64 */ void hexdump(const void *ptr, size_t size) { int i, j; const unsigned char *cptr = ptr; for (i = 0; i < size; i += 16) { fprintf(stdout, "%04x ", i); for (j = 0; j < 16 && i+j < size; j++) { fprintf(stdout, "%02x ", cptr[i+j]); } fprintf(stdout, "\n"); } } void rtp_decoder_handle_pkt(u_char *arg, const struct pcap_pkthdr *hdr, const u_char *bytes){ rtp_decoder_t dcdr = (rtp_decoder_t)arg; int pktsize; struct timeval delta; int octets_recvd; srtp_err_status_t status; dcdr->frame_nr++; if (dcdr->start_tv.tv_sec == 0 && dcdr->start_tv.tv_sec == 0) { dcdr->start_tv = hdr->ts; } if (hdr->caplen < dcdr->rtp_offset) { return; } const void *rtp_packet = bytes + dcdr->rtp_offset; memcpy((void *)&dcdr->message, rtp_packet, hdr->caplen - dcdr->rtp_offset); pktsize = hdr->caplen - dcdr->rtp_offset; octets_recvd = pktsize; if (octets_recvd == -1) { return; } /* verify rtp header */ if (dcdr->message.header.version != 2) { return; //return -1; } if(dcdr->srtp_ctx == NULL){ status = rtp_decoder_init_srtp(dcdr, dcdr->message.header.ssrc); if (status) { exit(1); } } if(dcdr->srtp_ctx != NULL){ } status = srtp_unprotect(dcdr->srtp_ctx, &dcdr->message, &octets_recvd); if (status){ return; } timersub(&hdr->ts, &dcdr->start_tv, &delta); fprintf(stdout, "%02ld:%02ld.%06ld\n", delta.tv_sec/60, delta.tv_sec%60, (long)delta.tv_usec); hexdump(&dcdr->message, pktsize); } void rtp_print_error(srtp_err_status_t status, char *message){ fprintf(stderr, "error: %s %d%s\n", message, status, status == srtp_err_status_replay_fail ? " (replay check failed)" : status == srtp_err_status_bad_param ? " (bad param)" : status == srtp_err_status_no_ctx ? " (no context)" : status == srtp_err_status_cipher_fail ? " (cipher failed)" : status == srtp_err_status_key_expired ? " (key expired)" : status == srtp_err_status_auth_fail ? " (auth check failed)" : ""); } ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rtp_decoder.h���������������������������������0000664�0000000�0000000�00000006016�13041410345�0023200�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rtp_decoder.h * * decoder structures and functions for SRTP pcap decoder * * Bernardo Torres <bernardo@torresautomacao.com.br> * * Some structure and code from https://github.com/gteissier/srtp-decrypt * */ /* * * Copyright (c) 2001-2006 Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef RTP_DECODER_H #define RTP_DECODER_H #include "srtp_priv.h" #include "rtp_priv.h" #include "rtp.h" #define DEFAULT_RTP_OFFSET 42 typedef struct rtp_decoder_ctx_t { srtp_policy_t policy; srtp_ctx_t *srtp_ctx; int rtp_offset; struct timeval start_tv; int frame_nr; rtp_msg_t message; } rtp_decoder_ctx_t; typedef struct rtp_decoder_ctx_t *rtp_decoder_t; /* * error to string */ void rtp_print_error(srtp_err_status_t status, char *message); /* * prints the output of a random buffer in hexadecimal */ void hexdump(const void *ptr, size_t size); /* * the function usage() prints an error message describing how this * program should be called, then calls exit() */ void usage(char *prog_name); /* * transforms base64 key into octet */ char *decode_sdes(char *in, char *out); /* * pcap handling */ void rtp_decoder_handle_pkt(u_char *arg, const struct pcap_pkthdr *hdr, const u_char *bytes); rtp_decoder_t rtp_decoder_alloc(void); void rtp_decoder_dealloc(rtp_decoder_t rtp_ctx); int rtp_decoder_init(rtp_decoder_t dcdr, srtp_policy_t policy); srtp_err_status_t rtp_decoder_init_srtp(rtp_decoder_t decoder, unsigned int ssrc); int rtp_decoder_deinit_srtp(rtp_decoder_t decoder); #endif /* RTP_DECODER_H */ ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rtpw.c����������������������������������������0000664�0000000�0000000�00000044635�13041410345�0021706�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * rtpw.c * * rtp word sender/receiver * * David A. McGrew * Cisco Systems, Inc. * * This app is a simple RTP application intended only for testing * libsrtp. It reads one word at a time from /usr/dict/words (or * whatever file is specified as DICT_FILE), and sends one word out * each USEC_RATE microseconds. Secure RTP protections can be * applied. See the usage() function for more details. * */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "getopt_s.h" /* for local getopt() */ #include <stdio.h> /* for printf, fprintf */ #include <stdlib.h> /* for atoi() */ #include <errno.h> #include <signal.h> /* for signal() */ #include <string.h> /* for strncpy() */ #include <time.h> /* for usleep() */ #ifdef HAVE_UNISTD_H #include <unistd.h> /* for close() */ #elif defined(_MSC_VER) #include <io.h> /* for _close() */ #define close _close #endif #ifdef HAVE_SYS_SOCKET_H # include <sys/socket.h> #endif #ifdef HAVE_NETINET_IN_H # include <netinet/in.h> #elif defined HAVE_WINSOCK2_H # include <winsock2.h> # include <ws2tcpip.h> # define RTPW_USE_WINSOCK2 1 #endif #ifdef HAVE_ARPA_INET_H # include <arpa/inet.h> #endif #include "srtp.h" #include "rtp.h" #include "util.h" #ifdef RTPW_USE_WINSOCK2 # define DICT_FILE "words.txt" #else # define DICT_FILE "/usr/share/dict/words" #endif #define USEC_RATE (5e5) #define MAX_WORD_LEN 128 #define ADDR_IS_MULTICAST(a) IN_MULTICAST(htonl(a)) #define MAX_KEY_LEN 96 #ifndef HAVE_USLEEP # ifdef HAVE_WINDOWS_H # define usleep(us) Sleep((us)/1000) # else # define usleep(us) sleep((us)/1000000) # endif #endif /* * the function usage() prints an error message describing how this * program should be called, then calls exit() */ void usage(char *prog_name); /* * leave_group(...) de-registers from a multicast group */ void leave_group(int sock, struct ip_mreq mreq, char *name); /* * setup_signal_handler() sets up a signal handler to trigger * cleanups after an interrupt */ int setup_signal_handler(char* name); /* * handle_signal(...) handles interrupt signal to trigger cleanups */ volatile int interrupted = 0; /* * program_type distinguishes the [s]rtp sender and receiver cases */ typedef enum { sender, receiver, unknown } program_type; int main (int argc, char *argv[]) { char *dictfile = DICT_FILE; FILE *dict; char word[MAX_WORD_LEN]; int sock, ret; struct in_addr rcvr_addr; struct sockaddr_in name; struct ip_mreq mreq; #if BEW struct sockaddr_in local; #endif program_type prog_type = unknown; srtp_sec_serv_t sec_servs = sec_serv_none; unsigned char ttl = 5; int c; int key_size = 128; int tag_size = 8; int gcm_on = 0; char *input_key = NULL; int b64_input = 0; char *address = NULL; char key[MAX_KEY_LEN]; unsigned short port = 0; rtp_sender_t snd; srtp_policy_t policy; srtp_err_status_t status; int len; int expected_len; int do_list_mods = 0; uint32_t ssrc = 0xdeadbeef; /* ssrc value hardcoded for now */ #ifdef RTPW_USE_WINSOCK2 WORD wVersionRequested = MAKEWORD(2, 0); WSADATA wsaData; ret = WSAStartup(wVersionRequested, &wsaData); if (ret != 0) { fprintf(stderr, "error: WSAStartup() failed: %d\n", ret); exit(1); } #endif memset(&policy, 0x0, sizeof(srtp_policy_t)); printf("Using %s [0x%x]\n", srtp_get_version_string(), srtp_get_version()); if (setup_signal_handler(argv[0]) != 0) { exit(1); } /* initialize srtp library */ status = srtp_init(); if (status) { printf("error: srtp initialization failed with error code %d\n", status); exit(1); } /* check args */ while (1) { c = getopt_s(argc, argv, "b:k:rsgt:ae:ld:"); if (c == -1) { break; } switch (c) { case 'b': b64_input = 1; /* fall thru */ case 'k': input_key = optarg_s; break; case 'e': key_size = atoi(optarg_s); if (key_size != 128 && key_size != 256) { printf("error: encryption key size must be 128 or 256 (%d)\n", key_size); exit(1); } sec_servs |= sec_serv_conf; break; case 't': tag_size = atoi(optarg_s); if (tag_size != 8 && tag_size != 16) { printf("error: GCM tag size must be 8 or 16 (%d)\n", tag_size); exit(1); } break; case 'a': sec_servs |= sec_serv_auth; break; case 'g': gcm_on = 1; sec_servs |= sec_serv_auth; break; case 'r': prog_type = receiver; break; case 's': prog_type = sender; break; case 'd': status = srtp_set_debug_module(optarg_s, 1); if (status) { printf("error: set debug module (%s) failed\n", optarg_s); exit(1); } break; case 'l': do_list_mods = 1; break; default: usage(argv[0]); } } if (prog_type == unknown) { if (do_list_mods) { status = srtp_list_debug_modules(); if (status) { printf("error: list of debug modules failed\n"); exit(1); } return 0; } else { printf("error: neither sender [-s] nor receiver [-r] specified\n"); usage(argv[0]); } } if ((sec_servs && !input_key) || (!sec_servs && input_key)) { /* * a key must be provided if and only if security services have * been requested */ usage(argv[0]); } if (argc != optind_s + 2) { /* wrong number of arguments */ usage(argv[0]); } /* get address from arg */ address = argv[optind_s++]; /* get port from arg */ port = atoi(argv[optind_s++]); /* set address */ #ifdef HAVE_INET_ATON if (0 == inet_aton(address, &rcvr_addr)) { fprintf(stderr, "%s: cannot parse IP v4 address %s\n", argv[0], address); exit(1); } if (rcvr_addr.s_addr == INADDR_NONE) { fprintf(stderr, "%s: address error", argv[0]); exit(1); } #else rcvr_addr.s_addr = inet_addr(address); if (0xffffffff == rcvr_addr.s_addr) { fprintf(stderr, "%s: cannot parse IP v4 address %s\n", argv[0], address); exit(1); } #endif /* open socket */ sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock < 0) { int err; #ifdef RTPW_USE_WINSOCK2 err = WSAGetLastError(); #else err = errno; #endif fprintf(stderr, "%s: couldn't open socket: %d\n", argv[0], err); exit(1); } name.sin_addr = rcvr_addr; name.sin_family = PF_INET; name.sin_port = htons(port); if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) { if (prog_type == sender) { ret = setsockopt(sock, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)); if (ret < 0) { fprintf(stderr, "%s: Failed to set TTL for multicast group", argv[0]); perror(""); exit(1); } } mreq.imr_multiaddr.s_addr = rcvr_addr.s_addr; mreq.imr_interface.s_addr = htonl(INADDR_ANY); ret = setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (void*)&mreq, sizeof(mreq)); if (ret < 0) { fprintf(stderr, "%s: Failed to join multicast group", argv[0]); perror(""); exit(1); } } /* report security services selected on the command line */ printf("security services: "); if (sec_servs & sec_serv_conf) printf("confidentiality "); if (sec_servs & sec_serv_auth) printf("message authentication"); if (sec_servs == sec_serv_none) printf("none"); printf("\n"); /* set up the srtp policy and master key */ if (sec_servs) { /* * create policy structure, using the default mechanisms but * with only the security services requested on the command line, * using the right SSRC value */ switch (sec_servs) { case sec_serv_conf_and_auth: if (gcm_on) { #ifdef OPENSSL switch (key_size) { case 128: srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_gcm_256_8_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_256_8_auth(&policy.rtcp); break; } #else printf("error: GCM mode only supported when using the OpenSSL crypto engine.\n"); return 0; #endif } else { switch (key_size) { case 128: srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; } } break; case sec_serv_conf: if (gcm_on) { printf("error: GCM mode must always be used with auth enabled\n"); return -1; } else { switch (key_size) { case 128: srtp_crypto_policy_set_aes_cm_128_null_auth(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_cm_256_null_auth(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); break; } } break; case sec_serv_auth: if (gcm_on) { #ifdef OPENSSL switch (key_size) { case 128: srtp_crypto_policy_set_aes_gcm_128_8_only_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_8_only_auth(&policy.rtcp); break; case 256: srtp_crypto_policy_set_aes_gcm_256_8_only_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_256_8_only_auth(&policy.rtcp); break; } #else printf("error: GCM mode only supported when using the OpenSSL crypto engine.\n"); return 0; #endif } else { srtp_crypto_policy_set_null_cipher_hmac_sha1_80(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); } break; default: printf("error: unknown security service requested\n"); return -1; } policy.ssrc.type = ssrc_specific; policy.ssrc.value = ssrc; policy.key = (uint8_t *) key; policy.ekt = NULL; policy.next = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.rtp.sec_serv = sec_servs; policy.rtcp.sec_serv = sec_serv_none; /* we don't do RTCP anyway */ if (gcm_on && tag_size != 8) { policy.rtp.auth_tag_len = tag_size; } /* * read key from hexadecimal or base64 on command line into an octet string */ if (b64_input) { int pad; expected_len = (policy.rtp.cipher_key_len*4)/3; len = base64_string_to_octet_string(key, &pad, input_key, expected_len); if (pad != 0) { fprintf(stderr, "error: padding in base64 unexpected\n"); exit(1); } } else { expected_len = policy.rtp.cipher_key_len*2; len = hex_string_to_octet_string(key, input_key, expected_len); } /* check that hex string is the right length */ if (len < expected_len) { fprintf(stderr, "error: too few digits in key/salt " "(should be %d digits, found %d)\n", expected_len, len); exit(1); } if ((int) strlen(input_key) > policy.rtp.cipher_key_len*2) { fprintf(stderr, "error: too many digits in key/salt " "(should be %d hexadecimal digits, found %u)\n", policy.rtp.cipher_key_len*2, (unsigned)strlen(input_key)); exit(1); } printf("set master key/salt to %s/", octet_string_hex_string(key, 16)); printf("%s\n", octet_string_hex_string(key+16, 14)); } else { /* * we're not providing security services, so set the policy to the * null policy * * Note that this policy does not conform to the SRTP * specification, since RTCP authentication is required. However, * the effect of this policy is to turn off SRTP, so that this * application is now a vanilla-flavored RTP application. */ srtp_crypto_policy_set_null_cipher_hmac_null(&policy.rtp); srtp_crypto_policy_set_null_cipher_hmac_null(&policy.rtcp); policy.key = (uint8_t *)key; policy.ssrc.type = ssrc_specific; policy.ssrc.value = ssrc; policy.window_size = 0; policy.allow_repeat_tx = 0; policy.ekt = NULL; policy.next = NULL; } if (prog_type == sender) { #if BEW /* bind to local socket (to match crypto policy, if need be) */ memset(&local, 0, sizeof(struct sockaddr_in)); local.sin_addr.s_addr = htonl(INADDR_ANY); local.sin_port = htons(port); ret = bind(sock, (struct sockaddr *) &local, sizeof(struct sockaddr_in)); if (ret < 0) { fprintf(stderr, "%s: bind failed\n", argv[0]); perror(""); exit(1); } #endif /* BEW */ /* initialize sender's rtp and srtp contexts */ snd = rtp_sender_alloc(); if (snd == NULL) { fprintf(stderr, "error: malloc() failed\n"); exit(1); } rtp_sender_init(snd, sock, name, ssrc); status = rtp_sender_init_srtp(snd, &policy); if (status) { fprintf(stderr, "error: srtp_create() failed with code %d\n", status); exit(1); } /* open dictionary */ dict = fopen (dictfile, "r"); if (dict == NULL) { fprintf(stderr, "%s: couldn't open file %s\n", argv[0], dictfile); if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) { leave_group(sock, mreq, argv[0]); } exit(1); } /* read words from dictionary, then send them off */ while (!interrupted && fgets(word, MAX_WORD_LEN, dict) != NULL) { len = strlen(word) + 1; /* plus one for null */ if (len > MAX_WORD_LEN) printf("error: word %s too large to send\n", word); else { rtp_sendto(snd, word, len); printf("sending word: %s", word); } usleep(USEC_RATE); } rtp_sender_deinit_srtp(snd); rtp_sender_dealloc(snd); fclose(dict); } else { /* prog_type == receiver */ rtp_receiver_t rcvr; if (bind(sock, (struct sockaddr *)&name, sizeof(name)) < 0) { close(sock); fprintf(stderr, "%s: socket bind error\n", argv[0]); perror(NULL); if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) { leave_group(sock, mreq, argv[0]); } exit(1); } rcvr = rtp_receiver_alloc(); if (rcvr == NULL) { fprintf(stderr, "error: malloc() failed\n"); exit(1); } rtp_receiver_init(rcvr, sock, name, ssrc); status = rtp_receiver_init_srtp(rcvr, &policy); if (status) { fprintf(stderr, "error: srtp_create() failed with code %d\n", status); exit(1); } /* get next word and loop */ while (!interrupted) { len = MAX_WORD_LEN; if (rtp_recvfrom(rcvr, word, &len) > -1) printf("\tword: %s\n", word); } rtp_receiver_deinit_srtp(rcvr); rtp_receiver_dealloc(rcvr); } if (ADDR_IS_MULTICAST(rcvr_addr.s_addr)) { leave_group(sock, mreq, argv[0]); } #ifdef RTPW_USE_WINSOCK2 ret = closesocket(sock); #else ret = close(sock); #endif if (ret < 0) { fprintf(stderr, "%s: Failed to close socket", argv[0]); perror(""); } status = srtp_shutdown(); if (status) { printf("error: srtp shutdown failed with error code %d\n", status); exit(1); } #ifdef RTPW_USE_WINSOCK2 WSACleanup(); #endif return 0; } void usage(char *string) { printf("usage: %s [-d <debug>]* [-k <key> [-a][-e]] " "[-s | -r] dest_ip dest_port\n" "or %s -l\n" "where -a use message authentication\n" " -e <key size> use encryption (use 128 or 256 for key size)\n" " -g Use AES-GCM mode (must be used with -e)\n" " -t <tag size> Tag size to use in GCM mode (use 8 or 16)\n" " -k <key> sets the srtp master key given in hexadecimal\n" " -b <key> sets the srtp master key given in base64\n" " -s act as rtp sender\n" " -r act as rtp receiver\n" " -l list debug modules\n" " -d <debug> turn on debugging for module <debug>\n", string, string); exit(1); } void leave_group(int sock, struct ip_mreq mreq, char *name) { int ret; ret = setsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP, (void*)&mreq, sizeof(mreq)); if (ret < 0) { fprintf(stderr, "%s: Failed to leave multicast group", name); perror(""); } } void handle_signal(int signum) { interrupted = 1; /* Reset handler explicitly, in case we don't have sigaction() (and signal() has BSD semantics), or we don't have SA_RESETHAND */ signal(signum, SIG_DFL); } int setup_signal_handler(char* name) { #if HAVE_SIGACTION struct sigaction act; memset(&act, 0, sizeof(act)); act.sa_handler = handle_signal; sigemptyset(&act.sa_mask); #if defined(SA_RESETHAND) act.sa_flags = SA_RESETHAND; #else act.sa_flags = 0; #endif /* Note that we're not setting SA_RESTART; we want recvfrom to return * EINTR when we signal the receiver. */ if (sigaction(SIGTERM, &act, NULL) != 0) { fprintf(stderr, "%s: error setting up signal handler", name); perror(""); return -1; } #else if (signal(SIGTERM, handle_signal) == SIG_ERR) { fprintf(stderr, "%s: error setting up signal handler", name); perror(""); return -1; } #endif return 0; } ���������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rtpw_test.sh����������������������������������0000775�0000000�0000000�00000007324�13041410345�0023132�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/bin/sh # # usage: rtpw_test <rtpw_commands> # # tests the rtpw sender and receiver functions # # Copyright (c) 2001-2006, Cisco Systems, Inc. # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # Redistributions in binary form must reproduce the above # copyright notice, this list of conditions and the following # disclaimer in the documentation and/or other materials provided # with the distribution. # # Neither the name of the Cisco Systems, Inc. nor the names of its # contributors may be used to endorse or promote products derived # from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE # COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED # OF THE POSSIBILITY OF SUCH DAMAGE. # RTPW=./rtpw DEST_PORT=9999 DURATION=3 key=Ky7cUDT2GnI0XKWYbXv9AYmqbcLsqzL9mvdN9t/G ARGS="-b $key -a -e 128" # First, we run "killall" to get rid of all existing rtpw processes. # This step also enables this script to clean up after itself; if this # script is interrupted after the rtpw processes are started but before # they are killed, those processes will linger. Re-running the script # will get rid of them. killall rtpw 2>/dev/null if test -x $RTPW; then echo $0 ": starting rtpw receiver process... " $RTPW $* $ARGS -r 0.0.0.0 $DEST_PORT & receiver_pid=$! echo $0 ": receiver PID = $receiver_pid" sleep 1 # verify that the background job is running ps -e | grep -q $receiver_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 254 fi echo $0 ": starting rtpw sender process..." $RTPW $* $ARGS -s 127.0.0.1 $DEST_PORT & sender_pid=$! echo $0 ": sender PID = $sender_pid" # verify that the background job is running ps -e | grep -q $sender_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 255 fi sleep $DURATION kill $receiver_pid kill $sender_pid wait $receiver_pid wait $sender_pid key=033490ba9e82994fc21013395739038992b2edc5034f61a72345ca598d7bfd0189aa6dc2ecab32fd9af74df6dfc6 ARGS="-k $key -a -e 256" echo $0 ": starting rtpw receiver process... " $RTPW $* $ARGS -r 0.0.0.0 $DEST_PORT & receiver_pid=$! echo $0 ": receiver PID = $receiver_pid" sleep 1 # verify that the background job is running ps -e | grep -q $receiver_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 254 fi echo $0 ": starting rtpw sender process..." $RTPW $* $ARGS -s 127.0.0.1 $DEST_PORT & sender_pid=$! echo $0 ": sender PID = $sender_pid" # verify that the background job is running ps -e | grep -q $sender_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 255 fi sleep $DURATION kill $receiver_pid kill $sender_pid wait $receiver_pid wait $sender_pid echo $0 ": done (test passed)" else echo "error: can't find executable" $RTPW exit 1 fi # EOF ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/rtpw_test_gcm.sh������������������������������0000775�0000000�0000000�00000012663�13041410345�0023762�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/bin/sh # # usage: rtpw_test <rtpw_commands> # # tests the rtpw sender and receiver functions # # Copyright (c) 2001-2006, Cisco Systems, Inc. # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # Redistributions in binary form must reproduce the above # copyright notice, this list of conditions and the following # disclaimer in the documentation and/or other materials provided # with the distribution. # # Neither the name of the Cisco Systems, Inc. nor the names of its # contributors may be used to endorse or promote products derived # from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE # COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED # OF THE POSSIBILITY OF SUCH DAMAGE. # RTPW=./rtpw DEST_PORT=9999 DURATION=3 # First, we run "killall" to get rid of all existing rtpw processes. # This step also enables this script to clean up after itself; if this # script is interrupted after the rtpw processes are started but before # they are killed, those processes will linger. Re-running the script # will get rid of them. killall rtpw 2>/dev/null if test -x $RTPW; then GCMARGS128="-k 01234567890123456789012345678901234567890123456789012345 -g -e 128" echo $0 ": starting GCM mode 128-bit rtpw receiver process... " exec $RTPW $* $GCMARGS128 -r 127.0.0.1 $DEST_PORT & receiver_pid=$! echo $0 ": receiver PID = $receiver_pid" sleep 1 # verify that the background job is running ps -e | grep -q $receiver_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 254 fi echo $0 ": starting GCM 128-bit rtpw sender process..." exec $RTPW $* $GCMARGS128 -s 127.0.0.1 $DEST_PORT & sender_pid=$! echo $0 ": sender PID = $sender_pid" # verify that the background job is running ps -e | grep -q $sender_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 255 fi sleep $DURATION kill $receiver_pid kill $sender_pid GCMARGS128="-k 01234567890123456789012345678901234567890123456789012345 -g -t 16 -e 128" echo $0 ": starting GCM mode 128-bit (16 byte tag) rtpw receiver process... " exec $RTPW $* $GCMARGS128 -r 127.0.0.1 $DEST_PORT & receiver_pid=$! echo $0 ": receiver PID = $receiver_pid" sleep 1 # verify that the background job is running ps -e | grep -q $receiver_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 254 fi echo $0 ": starting GCM 128-bit (16 byte tag) rtpw sender process..." exec $RTPW $* $GCMARGS128 -s 127.0.0.1 $DEST_PORT & sender_pid=$! echo $0 ": sender PID = $sender_pid" # verify that the background job is running ps -e | grep -q $sender_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 255 fi sleep $DURATION kill $receiver_pid kill $sender_pid GCMARGS256="-k 0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567 -g -e 256" echo $0 ": starting GCM mode 256-bit rtpw receiver process... " exec $RTPW $* $GCMARGS256 -r 127.0.0.1 $DEST_PORT & receiver_pid=$! echo $0 ": receiver PID = $receiver_pid" sleep 1 # verify that the background job is running ps -e | grep -q $receiver_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 254 fi echo $0 ": starting GCM 256-bit rtpw sender process..." exec $RTPW $* $GCMARGS256 -s 127.0.0.1 $DEST_PORT & sender_pid=$! echo $0 ": sender PID = $sender_pid" # verify that the background job is running ps -e | grep -q $sender_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 255 fi sleep $DURATION kill $receiver_pid kill $sender_pid GCMARGS256="-k a123456789012345678901234567890123456789012345678901234567890123456789012345678901234567 -g -t 16 -e 256" echo $0 ": starting GCM mode 256-bit (16 byte tag) rtpw receiver process... " exec $RTPW $* $GCMARGS256 -r 127.0.0.1 $DEST_PORT & receiver_pid=$! echo $0 ": receiver PID = $receiver_pid" sleep 1 # verify that the background job is running ps -e | grep -q $receiver_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 254 fi echo $0 ": starting GCM 256-bit (16 byte tag) rtpw sender process..." exec $RTPW $* $GCMARGS256 -s 127.0.0.1 $DEST_PORT & sender_pid=$! echo $0 ": sender PID = $sender_pid" # verify that the background job is running ps -e | grep -q $sender_pid retval=$? echo $retval if [ $retval != 0 ]; then echo $0 ": error" exit 255 fi sleep $DURATION kill $receiver_pid kill $sender_pid echo $0 ": done (test passed)" else echo "error: can't find executable" $RTPW exit 1 fi # EOF �����������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/srtp_driver.c���������������������������������0000664�0000000�0000000�00000266453�13041410345�0023261�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * srtp_driver.c * * a test driver for libSRTP * * David A. McGrew * Cisco Systems, Inc. */ /* * * Copyright (c) 2001-2006, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <string.h> /* for memcpy() */ #include <time.h> /* for clock() */ #include <stdlib.h> /* for malloc(), free() */ #include <stdio.h> /* for print(), fflush() */ #include "getopt_s.h" /* for local getopt() */ #include "util.h" #include "srtp_priv.h" #ifdef HAVE_NETINET_IN_H # include <netinet/in.h> #elif defined HAVE_WINSOCK2_H # include <winsock2.h> #endif #define PRINT_REFERENCE_PACKET 1 srtp_err_status_t srtp_validate(void); #ifdef OPENSSL srtp_err_status_t srtp_validate_gcm(void); #endif srtp_err_status_t srtp_validate_encrypted_extensions_headers(void); #ifdef OPENSSL srtp_err_status_t srtp_validate_encrypted_extensions_headers_gcm(void); #endif srtp_err_status_t srtp_validate_aes_256(void); srtp_err_status_t srtp_create_big_policy(srtp_policy_t **list); srtp_err_status_t srtp_dealloc_big_policy(srtp_policy_t *list); srtp_err_status_t srtp_test_empty_payload(void); #ifdef OPENSSL srtp_err_status_t srtp_test_empty_payload_gcm(void); #endif srtp_err_status_t srtp_test_remove_stream(void); srtp_err_status_t srtp_test_update(void); double srtp_bits_per_second(int msg_len_octets, const srtp_policy_t *policy); double srtp_rejections_per_second(int msg_len_octets, const srtp_policy_t *policy); void srtp_do_timing(const srtp_policy_t *policy); void srtp_do_rejection_timing(const srtp_policy_t *policy); srtp_err_status_t srtp_test(const srtp_policy_t *policy, int extension_header); srtp_err_status_t srtcp_test(const srtp_policy_t *policy); srtp_err_status_t srtp_session_print_policy(srtp_t srtp); srtp_err_status_t srtp_print_policy(const srtp_policy_t *policy); char * srtp_packet_to_string(srtp_hdr_t *hdr, int packet_len); double mips_estimate(int num_trials, int *ignore); extern uint8_t test_key[46]; void usage (char *prog_name) { printf("usage: %s [ -t ][ -c ][ -v ][-d <debug_module> ]* [ -l ]\n" " -t run timing test\n" " -r run rejection timing test\n" " -c run codec timing test\n" " -v run validation tests\n" " -d <mod> turn on debugging module <mod>\n" " -l list debugging modules\n", prog_name); exit(1); } /* * The policy_array is a null-terminated array of policy structs. it * is declared at the end of this file */ extern const srtp_policy_t *policy_array[]; /* the wildcard_policy is declared below; it has a wildcard ssrc */ extern const srtp_policy_t wildcard_policy; /* * mod_driver debug module - debugging module for this test driver * * we use the crypto_kernel debugging system in this driver, which * makes the interface uniform and increases portability */ srtp_debug_module_t mod_driver = { 0, /* debugging is off by default */ "driver" /* printable name for module */ }; int main (int argc, char *argv[]) { int q; unsigned do_timing_test = 0; unsigned do_rejection_test = 0; unsigned do_codec_timing = 0; unsigned do_validation = 0; unsigned do_list_mods = 0; srtp_err_status_t status; /* * verify that the compiler has interpreted the header data * structure srtp_hdr_t correctly */ if (sizeof(srtp_hdr_t) != 12) { printf("error: srtp_hdr_t has incorrect size" "(size is %ld bytes, expected 12)\n", (long)sizeof(srtp_hdr_t)); exit(1); } /* initialize srtp library */ status = srtp_init(); if (status) { printf("error: srtp init failed with error code %d\n", status); exit(1); } /* load srtp_driver debug module */ status = srtp_crypto_kernel_load_debug_module(&mod_driver); if (status) { printf("error: load of srtp_driver debug module failed " "with error code %d\n", status); exit(1); } /* process input arguments */ while (1) { q = getopt_s(argc, argv, "trcvld:"); if (q == -1) { break; } switch (q) { case 't': do_timing_test = 1; break; case 'r': do_rejection_test = 1; break; case 'c': do_codec_timing = 1; break; case 'v': do_validation = 1; break; case 'l': do_list_mods = 1; break; case 'd': status = srtp_crypto_kernel_set_debug_module(optarg_s, 1); if (status) { printf("error: set debug module (%s) failed\n", optarg_s); exit(1); } break; default: usage(argv[0]); } } if (!do_validation && !do_timing_test && !do_codec_timing && !do_list_mods && !do_rejection_test) { usage(argv[0]); } if (do_list_mods) { status = srtp_crypto_kernel_list_debug_modules(); if (status) { printf("error: list of debug modules failed\n"); exit(1); } } if (do_validation) { const srtp_policy_t **policy = policy_array; srtp_policy_t *big_policy; /* loop over policy array, testing srtp and srtcp for each policy */ while (*policy != NULL) { printf("testing srtp_protect and srtp_unprotect\n"); if (srtp_test(*policy, 0) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } printf("testing srtp_protect and srtp_unprotect with encrypted extensions headers\n"); if (srtp_test(*policy, 1) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } printf("testing srtp_protect_rtcp and srtp_unprotect_rtcp\n"); if (srtcp_test(*policy) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } policy++; } /* create a big policy list and run tests on it */ status = srtp_create_big_policy(&big_policy); if (status) { printf("unexpected failure with error code %d\n", status); exit(1); } printf("testing srtp_protect and srtp_unprotect with big policy\n"); if (srtp_test(big_policy, 0) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } printf("testing srtp_protect and srtp_unprotect with big policy and encrypted extensions headers\n"); if (srtp_test(big_policy, 1) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } status = srtp_dealloc_big_policy(big_policy); if (status) { printf("unexpected failure with error code %d\n", status); exit(1); } /* run test on wildcard policy */ printf("testing srtp_protect and srtp_unprotect on " "wildcard ssrc policy\n"); if (srtp_test(&wildcard_policy, 0) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } printf("testing srtp_protect and srtp_unprotect on " "wildcard ssrc policy and encrypted extensions headers\n"); if (srtp_test(&wildcard_policy, 1) == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } /* * run validation test against the reference packets - note * that this test only covers the default policy */ printf("testing srtp_protect and srtp_unprotect against " "reference packet\n"); if (srtp_validate() == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } #ifdef OPENSSL printf("testing srtp_protect and srtp_unprotect against " "reference packet using GCM\n"); if (srtp_validate_gcm() == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } #endif printf("testing srtp_protect and srtp_unprotect against " "reference packet with encrypted extensions headers\n"); if (srtp_validate_encrypted_extensions_headers() == srtp_err_status_ok) printf("passed\n\n"); else { printf("failed\n"); exit(1); } #ifdef OPENSSL printf("testing srtp_protect and srtp_unprotect against " "reference packet with encrypted extension headers (GCM)\n"); if (srtp_validate_encrypted_extensions_headers_gcm() == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } #endif /* * run validation test against the reference packets for * AES-256 */ printf("testing srtp_protect and srtp_unprotect against " "reference packet (AES-256)\n"); if (srtp_validate_aes_256() == srtp_err_status_ok) { printf("passed\n\n"); } else{ printf("failed\n"); exit(1); } /* * test packets with empty payload */ printf("testing srtp_protect and srtp_unprotect against " "packet with empty payload\n"); if (srtp_test_empty_payload() == srtp_err_status_ok) { printf("passed\n"); } else{ printf("failed\n"); exit(1); } #ifdef OPENSSL printf("testing srtp_protect and srtp_unprotect against " "packet with empty payload (GCM)\n"); if (srtp_test_empty_payload_gcm() == srtp_err_status_ok) { printf("passed\n"); } else{ printf("failed\n"); exit(1); } #endif /* * test the function srtp_remove_stream() */ printf("testing srtp_remove_stream()..."); if (srtp_test_remove_stream() == srtp_err_status_ok) { printf("passed\n"); } else{ printf("failed\n"); exit(1); } /* * test the function srtp_update() */ printf("testing srtp_update()..."); if (srtp_test_update() == srtp_err_status_ok) { printf("passed\n"); } else { printf("failed\n"); exit(1); } } if (do_timing_test) { const srtp_policy_t **policy = policy_array; /* loop over policies, run timing test for each */ while (*policy != NULL) { srtp_print_policy(*policy); srtp_do_timing(*policy); policy++; } } if (do_rejection_test) { const srtp_policy_t **policy = policy_array; /* loop over policies, run rejection timing test for each */ while (*policy != NULL) { srtp_print_policy(*policy); srtp_do_rejection_timing(*policy); policy++; } } if (do_codec_timing) { srtp_policy_t policy; int ignore; double mips_value = mips_estimate(1000000000, &ignore); memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xdecafbad; policy.key = test_key; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; printf("mips estimate: %e\n", mips_value); printf("testing srtp processing time for voice codecs:\n"); printf("codec\t\tlength (octets)\t\tsrtp instructions/second\n"); printf("G.711\t\t%d\t\t\t%e\n", 80, (double)mips_value * (80 * 8) / srtp_bits_per_second(80, &policy) / .01 ); printf("G.711\t\t%d\t\t\t%e\n", 160, (double)mips_value * (160 * 8) / srtp_bits_per_second(160, &policy) / .02); printf("G.726-32\t%d\t\t\t%e\n", 40, (double)mips_value * (40 * 8) / srtp_bits_per_second(40, &policy) / .01 ); printf("G.726-32\t%d\t\t\t%e\n", 80, (double)mips_value * (80 * 8) / srtp_bits_per_second(80, &policy) / .02); printf("G.729\t\t%d\t\t\t%e\n", 10, (double)mips_value * (10 * 8) / srtp_bits_per_second(10, &policy) / .01 ); printf("G.729\t\t%d\t\t\t%e\n", 20, (double)mips_value * (20 * 8) / srtp_bits_per_second(20, &policy) / .02 ); printf("Wideband\t%d\t\t\t%e\n", 320, (double)mips_value * (320 * 8) / srtp_bits_per_second(320, &policy) / .01 ); printf("Wideband\t%d\t\t\t%e\n", 640, (double)mips_value * (640 * 8) / srtp_bits_per_second(640, &policy) / .02 ); } status = srtp_shutdown(); if (status) { printf("error: srtp shutdown failed with error code %d\n", status); exit(1); } return 0; } /* * srtp_create_test_packet(len, ssrc) returns a pointer to a * (malloced) example RTP packet whose data field has the length given * by pkt_octet_len and the SSRC value ssrc. The total length of the * packet is twelve octets longer, since the header is at the * beginning. There is room at the end of the packet for a trailer, * and the four octets following the packet are filled with 0xff * values to enable testing for overwrites. * * note that the location of the test packet can (and should) be * deallocated with the free() call once it is no longer needed. */ srtp_hdr_t * srtp_create_test_packet (int pkt_octet_len, uint32_t ssrc) { int i; uint8_t *buffer; srtp_hdr_t *hdr; int bytes_in_hdr = 12; /* allocate memory for test packet */ hdr = (srtp_hdr_t*)malloc(pkt_octet_len + bytes_in_hdr + SRTP_MAX_TRAILER_LEN + 4); if (!hdr) { return NULL; } hdr->version = 2; /* RTP version two */ hdr->p = 0; /* no padding needed */ hdr->x = 0; /* no header extension */ hdr->cc = 0; /* no CSRCs */ hdr->m = 0; /* marker bit */ hdr->pt = 0xf; /* payload type */ hdr->seq = htons(0x1234); /* sequence number */ hdr->ts = htonl(0xdecafbad); /* timestamp */ hdr->ssrc = htonl(ssrc); /* synch. source */ buffer = (uint8_t*)hdr; buffer += bytes_in_hdr; /* set RTP data to 0xab */ for (i = 0; i < pkt_octet_len; i++) { *buffer++ = 0xab; } /* set post-data value to 0xffff to enable overrun checking */ for (i = 0; i < SRTP_MAX_TRAILER_LEN + 4; i++) { *buffer++ = 0xff; } return hdr; } srtp_hdr_t * srtp_create_test_packet_ext_hdr(int pkt_octet_len, uint32_t ssrc) { int i; uint8_t *buffer; srtp_hdr_t *hdr; int bytes_in_hdr = 12; uint8_t extension_header[12] = { /* one-byte header */ 0xbe, 0xde, /* size */ 0x00, 0x02, /* id 1, length 1 (i.e. 2 bytes) */ 0x11, /* payload */ 0xca, 0xfe, /* padding */ 0x00, /* id 2, length 0 (i.e. 1 byte) */ 0x20, /* payload */ 0xba, /* padding */ 0x00, 0x00 }; /* allocate memory for test packet */ hdr = (srtp_hdr_t*) malloc(pkt_octet_len + bytes_in_hdr + sizeof(extension_header) + SRTP_MAX_TRAILER_LEN + 4); if (!hdr) return NULL; hdr->version = 2; /* RTP version two */ hdr->p = 0; /* no padding needed */ hdr->x = 1; /* no header extension */ hdr->cc = 0; /* no CSRCs */ hdr->m = 0; /* marker bit */ hdr->pt = 0xf; /* payload type */ hdr->seq = htons(0x1234); /* sequence number */ hdr->ts = htonl(0xdecafbad); /* timestamp */ hdr->ssrc = htonl(ssrc); /* synch. source */ buffer = (uint8_t *)hdr; buffer += bytes_in_hdr; memcpy(buffer, extension_header, sizeof(extension_header)); buffer += sizeof(extension_header); /* set RTP data to 0xab */ for (i=0; i < pkt_octet_len; i++) *buffer++ = 0xab; /* set post-data value to 0xffff to enable overrun checking */ for (i=0; i < SRTP_MAX_TRAILER_LEN+4; i++) *buffer++ = 0xff; return hdr; } void srtp_do_timing (const srtp_policy_t *policy) { int len; /* * note: the output of this function is formatted so that it * can be used in gnuplot. '#' indicates a comment, and "\r\n" * terminates a record */ printf("# testing srtp throughput:\r\n"); printf("# mesg length (octets)\tthroughput (megabits per second)\r\n"); for (len = 16; len <= 2048; len *= 2) { printf("%d\t\t\t%f\r\n", len, srtp_bits_per_second(len, policy) / 1.0E6); } /* these extra linefeeds let gnuplot know that a dataset is done */ printf("\r\n\r\n"); } void srtp_do_rejection_timing (const srtp_policy_t *policy) { int len; /* * note: the output of this function is formatted so that it * can be used in gnuplot. '#' indicates a comment, and "\r\n" * terminates a record */ printf("# testing srtp rejection throughput:\r\n"); printf("# mesg length (octets)\trejections per second\r\n"); for (len = 8; len <= 2048; len *= 2) { printf("%d\t\t\t%e\r\n", len, srtp_rejections_per_second(len, policy)); } /* these extra linefeeds let gnuplot know that a dataset is done */ printf("\r\n\r\n"); } #define MAX_MSG_LEN 1024 double srtp_bits_per_second (int msg_len_octets, const srtp_policy_t *policy) { srtp_t srtp; srtp_hdr_t *mesg; int i; clock_t timer; int num_trials = 100000; int len; uint32_t ssrc; srtp_err_status_t status; /* * allocate and initialize an srtp session */ status = srtp_create(&srtp, policy); if (status) { printf("error: srtp_create() failed with error code %d\n", status); exit(1); } /* * if the ssrc is unspecified, use a predetermined one */ if (policy->ssrc.type != ssrc_specific) { ssrc = 0xdeadbeef; } else { ssrc = policy->ssrc.value; } /* * create a test packet */ mesg = srtp_create_test_packet(msg_len_octets, ssrc); if (mesg == NULL) { return 0.0; /* indicate failure by returning zero */ } timer = clock(); for (i = 0; i < num_trials; i++) { len = msg_len_octets + 12; /* add in rtp header length */ /* srtp protect message */ status = srtp_protect(srtp, mesg, &len); if (status) { printf("error: srtp_protect() failed with error code %d\n", status); exit(1); } /* increment message number */ { /* hack sequence to avoid problems with macros for htons/ntohs on some systems */ short new_seq = ntohs(mesg->seq) + 1; mesg->seq = htons(new_seq); } } timer = clock() - timer; free(mesg); status = srtp_dealloc(srtp); if (status) { printf("error: srtp_dealloc() failed with error code %d\n", status); exit(1); } return (double)(msg_len_octets) * 8 * num_trials * CLOCKS_PER_SEC / timer; } double srtp_rejections_per_second (int msg_len_octets, const srtp_policy_t *policy) { srtp_ctx_t *srtp; srtp_hdr_t *mesg; int i; int len; clock_t timer; int num_trials = 1000000; uint32_t ssrc = policy->ssrc.value; srtp_err_status_t status; /* * allocate and initialize an srtp session */ status = srtp_create(&srtp, policy); if (status) { printf("error: srtp_create() failed with error code %d\n", status); exit(1); } mesg = srtp_create_test_packet(msg_len_octets, ssrc); if (mesg == NULL) { return 0.0; /* indicate failure by returning zero */ } len = msg_len_octets; srtp_protect(srtp, (srtp_hdr_t*)mesg, &len); timer = clock(); for (i = 0; i < num_trials; i++) { len = msg_len_octets; srtp_unprotect(srtp, (srtp_hdr_t*)mesg, &len); } timer = clock() - timer; free(mesg); status = srtp_dealloc(srtp); if (status) { printf("error: srtp_dealloc() failed with error code %d\n", status); exit(1); } return (double)num_trials * CLOCKS_PER_SEC / timer; } void err_check (srtp_err_status_t s) { if (s == srtp_err_status_ok) { return; } else{ fprintf(stderr, "error: unexpected srtp failure (code %d)\n", s); } exit(1); } srtp_err_status_t srtp_test (const srtp_policy_t *policy, int extension_header) { int i; srtp_t srtp_sender; srtp_t srtp_rcvr; srtp_err_status_t status = srtp_err_status_ok; srtp_hdr_t *hdr, *hdr2; uint8_t hdr_enc[64]; uint8_t *pkt_end; int msg_len_octets, msg_len_enc; int len; int tag_length = policy->rtp.auth_tag_len; uint32_t ssrc; srtp_policy_t *rcvr_policy; srtp_policy_t tmp_policy; int header = 1; if (extension_header) { memcpy(&tmp_policy, policy, sizeof(srtp_policy_t)); tmp_policy.enc_xtn_hdr = &header; tmp_policy.enc_xtn_hdr_count = 1; err_check(srtp_create(&srtp_sender, &tmp_policy)); } else { err_check(srtp_create(&srtp_sender, policy)); } /* print out policy */ err_check(srtp_session_print_policy(srtp_sender)); /* * initialize data buffer, using the ssrc in the policy unless that * value is a wildcard, in which case we'll just use an arbitrary * one */ if (policy->ssrc.type != ssrc_specific) { ssrc = 0xdecafbad; } else{ ssrc = policy->ssrc.value; } msg_len_octets = 28; if (extension_header) { hdr = srtp_create_test_packet_ext_hdr(msg_len_octets, ssrc); hdr2 = srtp_create_test_packet_ext_hdr(msg_len_octets, ssrc); } else { hdr = srtp_create_test_packet(msg_len_octets, ssrc); hdr2 = srtp_create_test_packet(msg_len_octets, ssrc); } if (hdr == NULL) { free(hdr2); return srtp_err_status_alloc_fail; } if (hdr2 == NULL) { free(hdr); return srtp_err_status_alloc_fail; } /* set message length */ len = msg_len_octets; if (extension_header) { len += 12; } debug_print(mod_driver, "before protection:\n%s", srtp_packet_to_string(hdr, len)); #if PRINT_REFERENCE_PACKET debug_print(mod_driver, "reference packet before protection:\n%s", octet_string_hex_string((uint8_t*)hdr, len)); #endif err_check(srtp_protect(srtp_sender, hdr, &len)); debug_print(mod_driver, "after protection:\n%s", srtp_packet_to_string(hdr, len)); #if PRINT_REFERENCE_PACKET debug_print(mod_driver, "after protection:\n%s", octet_string_hex_string((uint8_t*)hdr, len)); #endif /* save protected message and length */ memcpy(hdr_enc, hdr, len); msg_len_enc = len; /* * check for overrun of the srtp_protect() function * * The packet is followed by a value of 0xfffff; if the value of the * data following the packet is different, then we know that the * protect function is overwriting the end of the packet. */ pkt_end = (uint8_t*)hdr + sizeof(srtp_hdr_t) + msg_len_octets + tag_length; if (extension_header) { pkt_end += 12; } for (i = 0; i < 4; i++) { if (pkt_end[i] != 0xff) { fprintf(stdout, "overwrite in srtp_protect() function " "(expected %x, found %x in trailing octet %d)\n", 0xff, ((uint8_t*)hdr)[i], i); free(hdr); free(hdr2); return srtp_err_status_algo_fail; } } /* * if the policy includes confidentiality, check that ciphertext is * different than plaintext * * Note that this check will give false negatives, with some small * probability, especially if the packets are short. For that * reason, we skip this check if the plaintext is less than four * octets long. */ if ((policy->rtp.sec_serv & sec_serv_conf) && (msg_len_octets >= 4)) { printf("testing that ciphertext is distinct from plaintext..."); status = srtp_err_status_algo_fail; for (i = 12; i < msg_len_octets + 12; i++) { if (((uint8_t*)hdr)[i] != ((uint8_t*)hdr2)[i]) { status = srtp_err_status_ok; } } if (status) { printf("failed\n"); free(hdr); free(hdr2); return status; } printf("passed\n"); } /* * if the policy uses a 'wildcard' ssrc, then we need to make a copy * of the policy that changes the direction to inbound * * we always copy the policy into the rcvr_policy, since otherwise * the compiler would fret about the constness of the policy */ rcvr_policy = (srtp_policy_t*)malloc(sizeof(srtp_policy_t)); if (rcvr_policy == NULL) { free(hdr); free(hdr2); return srtp_err_status_alloc_fail; } if (extension_header) { memcpy(rcvr_policy, &tmp_policy, sizeof(srtp_policy_t)); if (tmp_policy.ssrc.type == ssrc_any_outbound) { rcvr_policy->ssrc.type = ssrc_any_inbound; } } else { memcpy(rcvr_policy, policy, sizeof(srtp_policy_t)); if (policy->ssrc.type == ssrc_any_outbound) { rcvr_policy->ssrc.type = ssrc_any_inbound; } } err_check(srtp_create(&srtp_rcvr, rcvr_policy)); err_check(srtp_unprotect(srtp_rcvr, hdr, &len)); debug_print(mod_driver, "after unprotection:\n%s", srtp_packet_to_string(hdr, len)); /* verify that the unprotected packet matches the origial one */ for (i = 0; i < msg_len_octets; i++) { if (((uint8_t*)hdr)[i] != ((uint8_t*)hdr2)[i]) { fprintf(stdout, "mismatch at octet %d\n", i); status = srtp_err_status_algo_fail; } } if (status) { free(hdr); free(hdr2); free(rcvr_policy); return status; } /* * if the policy includes authentication, then test for false positives */ if (policy->rtp.sec_serv & sec_serv_auth) { char *data = ((char*)hdr) + 12; printf("testing for false positives in replay check..."); /* set message length */ len = msg_len_enc; /* unprotect a second time - should fail with a replay error */ status = srtp_unprotect(srtp_rcvr, hdr_enc, &len); if (status != srtp_err_status_replay_fail) { printf("failed with error code %d\n", status); free(hdr); free(hdr2); free(rcvr_policy); return status; } else { printf("passed\n"); } printf("testing for false positives in auth check..."); /* increment sequence number in header */ hdr->seq++; /* set message length */ len = msg_len_octets; if (extension_header) { len += 12; } /* apply protection */ err_check(srtp_protect(srtp_sender, hdr, &len)); /* flip bits in packet */ data[extension_header ? 12 : 0] ^= 0xff; /* unprotect, and check for authentication failure */ status = srtp_unprotect(srtp_rcvr, hdr, &len); if (status != srtp_err_status_auth_fail) { printf("failed\n"); free(hdr); free(hdr2); free(rcvr_policy); return status; } else { printf("passed\n"); } } err_check(srtp_dealloc(srtp_sender)); err_check(srtp_dealloc(srtp_rcvr)); free(hdr); free(hdr2); free(rcvr_policy); return srtp_err_status_ok; } srtp_err_status_t srtcp_test (const srtp_policy_t *policy) { int i; srtp_t srtcp_sender; srtp_t srtcp_rcvr; srtp_err_status_t status = srtp_err_status_ok; srtp_hdr_t *hdr, *hdr2; uint8_t hdr_enc[64]; uint8_t *pkt_end; int msg_len_octets, msg_len_enc; int len; int tag_length = policy->rtp.auth_tag_len; uint32_t ssrc; srtp_policy_t *rcvr_policy; err_check(srtp_create(&srtcp_sender, policy)); /* print out policy */ err_check(srtp_session_print_policy(srtcp_sender)); /* * initialize data buffer, using the ssrc in the policy unless that * value is a wildcard, in which case we'll just use an arbitrary * one */ if (policy->ssrc.type != ssrc_specific) { ssrc = 0xdecafbad; } else{ ssrc = policy->ssrc.value; } msg_len_octets = 28; hdr = srtp_create_test_packet(msg_len_octets, ssrc); if (hdr == NULL) { return srtp_err_status_alloc_fail; } hdr2 = srtp_create_test_packet(msg_len_octets, ssrc); if (hdr2 == NULL) { free(hdr); return srtp_err_status_alloc_fail; } /* set message length */ len = msg_len_octets; debug_print(mod_driver, "before protection:\n%s", srtp_packet_to_string(hdr, len)); #if PRINT_REFERENCE_PACKET debug_print(mod_driver, "reference packet before protection:\n%s", octet_string_hex_string((uint8_t*)hdr, len)); #endif err_check(srtp_protect_rtcp(srtcp_sender, hdr, &len)); debug_print(mod_driver, "after protection:\n%s", srtp_packet_to_string(hdr, len)); #if PRINT_REFERENCE_PACKET debug_print(mod_driver, "after protection:\n%s", octet_string_hex_string((uint8_t*)hdr, len)); #endif /* save protected message and length */ memcpy(hdr_enc, hdr, len); msg_len_enc = len; /* * check for overrun of the srtp_protect() function * * The packet is followed by a value of 0xfffff; if the value of the * data following the packet is different, then we know that the * protect function is overwriting the end of the packet. */ pkt_end = (uint8_t*)hdr + sizeof(srtp_hdr_t) + msg_len_octets + tag_length; for (i = 0; i < 4; i++) { if (pkt_end[i] != 0xff) { fprintf(stdout, "overwrite in srtp_protect_rtcp() function " "(expected %x, found %x in trailing octet %d)\n", 0xff, ((uint8_t*)hdr)[i], i); free(hdr); free(hdr2); return srtp_err_status_algo_fail; } } /* * if the policy includes confidentiality, check that ciphertext is * different than plaintext * * Note that this check will give false negatives, with some small * probability, especially if the packets are short. For that * reason, we skip this check if the plaintext is less than four * octets long. */ if ((policy->rtp.sec_serv & sec_serv_conf) && (msg_len_octets >= 4)) { printf("testing that ciphertext is distinct from plaintext..."); status = srtp_err_status_algo_fail; for (i = 12; i < msg_len_octets + 12; i++) { if (((uint8_t*)hdr)[i] != ((uint8_t*)hdr2)[i]) { status = srtp_err_status_ok; } } if (status) { printf("failed\n"); free(hdr); free(hdr2); return status; } printf("passed\n"); } /* * if the policy uses a 'wildcard' ssrc, then we need to make a copy * of the policy that changes the direction to inbound * * we always copy the policy into the rcvr_policy, since otherwise * the compiler would fret about the constness of the policy */ rcvr_policy = (srtp_policy_t*)malloc(sizeof(srtp_policy_t)); if (rcvr_policy == NULL) { return srtp_err_status_alloc_fail; } memcpy(rcvr_policy, policy, sizeof(srtp_policy_t)); if (policy->ssrc.type == ssrc_any_outbound) { rcvr_policy->ssrc.type = ssrc_any_inbound; } err_check(srtp_create(&srtcp_rcvr, rcvr_policy)); err_check(srtp_unprotect_rtcp(srtcp_rcvr, hdr, &len)); debug_print(mod_driver, "after unprotection:\n%s", srtp_packet_to_string(hdr, len)); /* verify that the unprotected packet matches the origial one */ for (i = 0; i < msg_len_octets; i++) { if (((uint8_t*)hdr)[i] != ((uint8_t*)hdr2)[i]) { fprintf(stdout, "mismatch at octet %d\n", i); status = srtp_err_status_algo_fail; } } if (status) { free(hdr); free(hdr2); free(rcvr_policy); return status; } /* * if the policy includes authentication, then test for false positives */ if (policy->rtp.sec_serv & sec_serv_auth) { char *data = ((char*)hdr) + 12; printf("testing for false positives in replay check..."); /* set message length */ len = msg_len_enc; /* unprotect a second time - should fail with a replay error */ status = srtp_unprotect_rtcp(srtcp_rcvr, hdr_enc, &len); if (status != srtp_err_status_replay_fail) { printf("failed with error code %d\n", status); free(hdr); free(hdr2); free(rcvr_policy); return status; } else { printf("passed\n"); } printf("testing for false positives in auth check..."); /* increment sequence number in header */ hdr->seq++; /* set message length */ len = msg_len_octets; /* apply protection */ err_check(srtp_protect_rtcp(srtcp_sender, hdr, &len)); /* flip bits in packet */ data[0] ^= 0xff; /* unprotect, and check for authentication failure */ status = srtp_unprotect_rtcp(srtcp_rcvr, hdr, &len); if (status != srtp_err_status_auth_fail) { printf("failed\n"); free(hdr); free(hdr2); free(rcvr_policy); return status; } else { printf("passed\n"); } } err_check(srtp_dealloc(srtcp_sender)); err_check(srtp_dealloc(srtcp_rcvr)); free(hdr); free(hdr2); free(rcvr_policy); return srtp_err_status_ok; } srtp_err_status_t srtp_session_print_policy (srtp_t srtp) { char *serv_descr[4] = { "none", "confidentiality", "authentication", "confidentiality and authentication" }; char *direction[3] = { "unknown", "outbound", "inbound" }; srtp_stream_t stream; /* sanity checking */ if (srtp == NULL) { return srtp_err_status_fail; } /* if there's a template stream, print it out */ if (srtp->stream_template != NULL) { stream = srtp->stream_template; printf("# SSRC: any %s\r\n" "# rtp cipher: %s\r\n" "# rtp auth: %s\r\n" "# rtp services: %s\r\n" "# rtcp cipher: %s\r\n" "# rtcp auth: %s\r\n" "# rtcp services: %s\r\n" "# window size: %lu\r\n" "# tx rtx allowed:%s\r\n", direction[stream->direction], stream->rtp_cipher->type->description, stream->rtp_auth->type->description, serv_descr[stream->rtp_services], stream->rtcp_cipher->type->description, stream->rtcp_auth->type->description, serv_descr[stream->rtcp_services], srtp_rdbx_get_window_size(&stream->rtp_rdbx), stream->allow_repeat_tx ? "true" : "false"); printf("# Encrypted extension headers: "); if (stream->enc_xtn_hdr && stream->enc_xtn_hdr_count > 0) { int* enc_xtn_hdr = stream->enc_xtn_hdr; int count = stream->enc_xtn_hdr_count; while (count > 0) { printf("%d ", *enc_xtn_hdr); enc_xtn_hdr++; count--; } printf("\n"); } else { printf("none\n"); } } /* loop over streams in session, printing the policy of each */ stream = srtp->stream_list; while (stream != NULL) { if (stream->rtp_services > sec_serv_conf_and_auth) { return srtp_err_status_bad_param; } printf("# SSRC: 0x%08x\r\n" "# rtp cipher: %s\r\n" "# rtp auth: %s\r\n" "# rtp services: %s\r\n" "# rtcp cipher: %s\r\n" "# rtcp auth: %s\r\n" "# rtcp services: %s\r\n" "# window size: %lu\r\n" "# tx rtx allowed:%s\r\n", stream->ssrc, stream->rtp_cipher->type->description, stream->rtp_auth->type->description, serv_descr[stream->rtp_services], stream->rtcp_cipher->type->description, stream->rtcp_auth->type->description, serv_descr[stream->rtcp_services], srtp_rdbx_get_window_size(&stream->rtp_rdbx), stream->allow_repeat_tx ? "true" : "false"); printf("# Encrypted extension headers: "); if (stream->enc_xtn_hdr && stream->enc_xtn_hdr_count > 0) { int* enc_xtn_hdr = stream->enc_xtn_hdr; int count = stream->enc_xtn_hdr_count; while (count > 0) { printf("%d ", *enc_xtn_hdr); enc_xtn_hdr++; count--; } printf("\n"); } else { printf("none\n"); } /* advance to next stream in the list */ stream = stream->next; } return srtp_err_status_ok; } srtp_err_status_t srtp_print_policy (const srtp_policy_t *policy) { srtp_err_status_t status; srtp_t session; status = srtp_create(&session, policy); if (status) { return status; } status = srtp_session_print_policy(session); if (status) { return status; } status = srtp_dealloc(session); if (status) { return status; } return srtp_err_status_ok; } /* * srtp_print_packet(...) is for debugging only * it prints an RTP packet to the stdout * * note that this function is *not* threadsafe */ #include <stdio.h> #define MTU 2048 char packet_string[MTU]; char * srtp_packet_to_string (srtp_hdr_t *hdr, int pkt_octet_len) { int octets_in_rtp_header = 12; uint8_t *data = ((uint8_t*)hdr) + octets_in_rtp_header; int hex_len = pkt_octet_len - octets_in_rtp_header; /* sanity checking */ if ((hdr == NULL) || (pkt_octet_len > MTU)) { return NULL; } /* write packet into string */ sprintf(packet_string, "(s)rtp packet: {\n" " version:\t%d\n" " p:\t\t%d\n" " x:\t\t%d\n" " cc:\t\t%d\n" " m:\t\t%d\n" " pt:\t\t%x\n" " seq:\t\t%x\n" " ts:\t\t%x\n" " ssrc:\t%x\n" " data:\t%s\n" "} (%d octets in total)\n", hdr->version, hdr->p, hdr->x, hdr->cc, hdr->m, hdr->pt, hdr->seq, hdr->ts, hdr->ssrc, octet_string_hex_string(data, hex_len), pkt_octet_len); return packet_string; } /* * mips_estimate() is a simple function to estimate the number of * instructions per second that the host can perform. note that this * function can be grossly wrong; you may want to have a manual sanity * check of its output! * * the 'ignore' pointer is there to convince the compiler to not just * optimize away the function */ double mips_estimate (int num_trials, int *ignore) { clock_t t; volatile int i, sum; sum = 0; t = clock(); for (i = 0; i < num_trials; i++) { sum += i; } t = clock() - t; /* printf("%d\n", sum); */ *ignore = sum; return (double)num_trials * CLOCKS_PER_SEC / t; } /* * srtp_validate() verifies the correctness of libsrtp by comparing * some computed packets against some pre-computed reference values. * These packets were made with the default SRTP policy. */ srtp_err_status_t srtp_validate () { uint8_t srtp_plaintext_ref[28] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab }; uint8_t srtp_plaintext[38] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtp_ciphertext[38] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0x4e, 0x55, 0xdc, 0x4c, 0xe7, 0x99, 0x78, 0xd8, 0x8c, 0xa4, 0xd2, 0x15, 0x94, 0x9d, 0x24, 0x02, 0xb7, 0x8d, 0x6a, 0xcc, 0x99, 0xea, 0x17, 0x9b, 0x8d, 0xbb }; uint8_t rtcp_plaintext_ref[24] = { 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, }; uint8_t rtcp_plaintext[38] = { 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtcp_ciphertext[38] = { 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, 0x71, 0x28, 0x03, 0x5b, 0xe4, 0x87, 0xb9, 0xbd, 0xbe, 0xf8, 0x90, 0x41, 0xf9, 0x77, 0xa5, 0xa8, 0x80, 0x00, 0x00, 0x01, 0x99, 0x3e, 0x08, 0xcd, 0x54, 0xd6, 0xc1, 0x23, 0x07, 0x98 }; srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) { return status; } /* * protect plaintext, then compare with ciphertext */ len = 28; status = srtp_protect(srtp_snd, srtp_plaintext, &len); if (status || (len != 38)) { return srtp_err_status_fail; } debug_print(mod_driver, "ciphertext:\n %s", octet_string_hex_string(srtp_plaintext, len)); debug_print(mod_driver, "ciphertext reference:\n %s", octet_string_hex_string(srtp_ciphertext, len)); if (octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) { return srtp_err_status_fail; } /* * protect plaintext rtcp, then compare with srtcp ciphertext */ len = 24; status = srtp_protect_rtcp(srtp_snd, rtcp_plaintext, &len); if (status || (len != 38)) { return srtp_err_status_fail; } debug_print(mod_driver, "srtcp ciphertext:\n %s", octet_string_hex_string(rtcp_plaintext, len)); debug_print(mod_driver, "srtcp ciphertext reference:\n %s", octet_string_hex_string(srtcp_ciphertext, len)); if (octet_string_is_eq(rtcp_plaintext, srtcp_ciphertext, len)) { return srtp_err_status_fail; } /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) { return status; } /* * unprotect ciphertext, then compare with plaintext */ status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len); if (status || (len != 28)) { return status; } if (octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) { return srtp_err_status_fail; } /* * unprotect srtcp ciphertext, then compare with rtcp plaintext */ len = 38; status = srtp_unprotect_rtcp(srtp_recv, srtcp_ciphertext, &len); if (status || (len != 24)) { return status; } if (octet_string_is_eq(srtcp_ciphertext, rtcp_plaintext_ref, len)) { return srtp_err_status_fail; } status = srtp_dealloc(srtp_snd); if (status) { return status; } status = srtp_dealloc(srtp_recv); if (status) { return status; } return srtp_err_status_ok; } #ifdef OPENSSL /* * srtp_validate_gcm() verifies the correctness of libsrtp by comparing * an computed packet against the known ciphertext for the plaintext. */ srtp_err_status_t srtp_validate_gcm () { unsigned char test_key_gcm[28] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab }; uint8_t rtp_plaintext_ref[28] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab }; uint8_t rtp_plaintext[44] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtp_ciphertext[44] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xc5, 0x00, 0x2e, 0xde, 0x04, 0xcf, 0xdd, 0x2e, 0xb9, 0x11, 0x59, 0xe0, 0x88, 0x0a, 0xa0, 0x6e, 0xd2, 0x97, 0x68, 0x26, 0xf7, 0x96, 0xb2, 0x01, 0xdf, 0x31, 0x31, 0xa1, 0x27, 0xe8, 0xa3, 0x92 }; uint8_t rtcp_plaintext_ref[24] = { 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, }; uint8_t rtcp_plaintext[44] = { 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtcp_ciphertext[44] = { 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, 0xc9, 0x8b, 0x8b, 0x5d, 0xf0, 0x39, 0x2a, 0x55, 0x85, 0x2b, 0x6c, 0x21, 0xac, 0x8e, 0x70, 0x25, 0xc5, 0x2c, 0x6f, 0xbe, 0xa2, 0xb3, 0xb4, 0x46, 0xea, 0x31, 0x12, 0x3b, 0xa8, 0x8c, 0xe6, 0x1e, 0x80, 0x00, 0x00, 0x01 }; srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key_gcm; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) { return status; } /* * protect plaintext rtp, then compare with srtp ciphertext */ len = 28; status = srtp_protect(srtp_snd, rtp_plaintext, &len); if (status || (len != 44)) { return srtp_err_status_fail; } debug_print(mod_driver, "srtp ciphertext:\n %s", octet_string_hex_string(rtp_plaintext, len)); debug_print(mod_driver, "srtp ciphertext reference:\n %s", octet_string_hex_string(srtp_ciphertext, len)); if (octet_string_is_eq(rtp_plaintext, srtp_ciphertext, len)) { return srtp_err_status_fail; } /* * protect plaintext rtcp, then compare with srtcp ciphertext */ len = 24; status = srtp_protect_rtcp(srtp_snd, rtcp_plaintext, &len); if (status || (len != 44)) { return srtp_err_status_fail; } debug_print(mod_driver, "srtcp ciphertext:\n %s", octet_string_hex_string(rtcp_plaintext, len)); debug_print(mod_driver, "srtcp ciphertext reference:\n %s", octet_string_hex_string(srtcp_ciphertext, len)); if (octet_string_is_eq(rtcp_plaintext, srtcp_ciphertext, len)) { return srtp_err_status_fail; } /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) { return status; } /* * unprotect srtp ciphertext, then compare with rtp plaintext */ len = 44; status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len); if (status || (len != 28)) { return status; } if (octet_string_is_eq(srtp_ciphertext, rtp_plaintext_ref, len)) { return srtp_err_status_fail; } /* * unprotect srtcp ciphertext, then compare with rtcp plaintext */ len = 44; status = srtp_unprotect_rtcp(srtp_recv, srtcp_ciphertext, &len); if (status || (len != 24)) { return status; } if (octet_string_is_eq(srtcp_ciphertext, rtcp_plaintext_ref, len)) { return srtp_err_status_fail; } status = srtp_dealloc(srtp_snd); if (status) { return status; } status = srtp_dealloc(srtp_recv); if (status) { return status; } return srtp_err_status_ok; } #endif /* * Test vectors taken from RFC 6904, Appendix A */ srtp_err_status_t srtp_validate_encrypted_extensions_headers() { unsigned char test_key_ext_headers[30] = { 0xe1, 0xf9, 0x7a, 0x0d, 0x3e, 0x01, 0x8b, 0xe0, 0xd6, 0x4f, 0xa3, 0x2c, 0x06, 0xde, 0x41, 0x39, 0x0e, 0xc6, 0x75, 0xad, 0x49, 0x8a, 0xfe, 0xeb, 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6 }; uint8_t srtp_plaintext_ref[56] = { 0x90, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xBE, 0xDE, 0x00, 0x06, 0x17, 0x41, 0x42, 0x73, 0xA4, 0x75, 0x26, 0x27, 0x48, 0x22, 0x00, 0x00, 0xC8, 0x30, 0x8E, 0x46, 0x55, 0x99, 0x63, 0x86, 0xB3, 0x95, 0xFB, 0x00, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab }; uint8_t srtp_plaintext[66] = { 0x90, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xBE, 0xDE, 0x00, 0x06, 0x17, 0x41, 0x42, 0x73, 0xA4, 0x75, 0x26, 0x27, 0x48, 0x22, 0x00, 0x00, 0xC8, 0x30, 0x8E, 0x46, 0x55, 0x99, 0x63, 0x86, 0xB3, 0x95, 0xFB, 0x00, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtp_ciphertext[66] = { 0x90, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xBE, 0xDE, 0x00, 0x06, 0x17, 0x58, 0x8A, 0x92, 0x70, 0xF4, 0xE1, 0x5E, 0x1C, 0x22, 0x00, 0x00, 0xC8, 0x30, 0x95, 0x46, 0xA9, 0x94, 0xF0, 0xBC, 0x54, 0x78, 0x97, 0x00, 0x4e, 0x55, 0xdc, 0x4c, 0xe7, 0x99, 0x78, 0xd8, 0x8c, 0xa4, 0xd2, 0x15, 0x94, 0x9d, 0x24, 0x02, 0x5a, 0x46, 0xb3, 0xca, 0x35, 0xc5, 0x35, 0xa8, 0x91, 0xc7 }; srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; int headers[3] = {1, 3, 4}; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key_ext_headers; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.enc_xtn_hdr = headers; policy.enc_xtn_hdr_count = sizeof(headers) / sizeof(headers[0]); policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) return status; /* * protect plaintext, then compare with ciphertext */ len = sizeof(srtp_plaintext_ref); status = srtp_protect(srtp_snd, srtp_plaintext, &len); if (status || (len != sizeof(srtp_plaintext))) return srtp_err_status_fail; debug_print(mod_driver, "ciphertext:\n %s", srtp_octet_string_hex_string(srtp_plaintext, len)); debug_print(mod_driver, "ciphertext reference:\n %s", srtp_octet_string_hex_string(srtp_ciphertext, len)); if (octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) return srtp_err_status_fail; /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) return status; /* * unprotect ciphertext, then compare with plaintext */ status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len); if (status) { return status; } else if (len != sizeof(srtp_plaintext_ref)) { return srtp_err_status_fail; } if (octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) return srtp_err_status_fail; status = srtp_dealloc(srtp_snd); if (status) return status; status = srtp_dealloc(srtp_recv); if (status) return status; return srtp_err_status_ok; } #ifdef OPENSSL /* * Headers of test vectors taken from RFC 6904, Appendix A */ srtp_err_status_t srtp_validate_encrypted_extensions_headers_gcm() { unsigned char test_key_ext_headers[30] = { 0xe1, 0xf9, 0x7a, 0x0d, 0x3e, 0x01, 0x8b, 0xe0, 0xd6, 0x4f, 0xa3, 0x2c, 0x06, 0xde, 0x41, 0x39, 0x0e, 0xc6, 0x75, 0xad, 0x49, 0x8a, 0xfe, 0xeb, 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6 }; uint8_t srtp_plaintext_ref[56] = { 0x90, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xBE, 0xDE, 0x00, 0x06, 0x17, 0x41, 0x42, 0x73, 0xA4, 0x75, 0x26, 0x27, 0x48, 0x22, 0x00, 0x00, 0xC8, 0x30, 0x8E, 0x46, 0x55, 0x99, 0x63, 0x86, 0xB3, 0x95, 0xFB, 0x00, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab }; uint8_t srtp_plaintext[64] = { 0x90, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xBE, 0xDE, 0x00, 0x06, 0x17, 0x41, 0x42, 0x73, 0xA4, 0x75, 0x26, 0x27, 0x48, 0x22, 0x00, 0x00, 0xC8, 0x30, 0x8E, 0x46, 0x55, 0x99, 0x63, 0x86, 0xB3, 0x95, 0xFB, 0x00, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtp_ciphertext[64] = { 0x90, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xBE, 0xDE, 0x00, 0x06, 0x17, 0x58, 0x8A, 0x92, 0x70, 0xF4, 0xE1, 0x5E, 0x1C, 0x22, 0x00, 0x00, 0xC8, 0x30, 0x95, 0x46, 0xA9, 0x94, 0xF0, 0xBC, 0x54, 0x78, 0x97, 0x00, 0x0e, 0xca, 0x0c, 0xf9, 0x5e, 0xe9, 0x55, 0xb2, 0x6c, 0xd3, 0xd2, 0x88, 0xb4, 0x9f, 0x6c, 0xa9, 0xbb, 0x4e, 0x15, 0xc2, 0xe9, 0xf2, 0x66, 0x78 }; srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; int headers[3] = {1, 3, 4}; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key_ext_headers; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.enc_xtn_hdr = headers; policy.enc_xtn_hdr_count = sizeof(headers) / sizeof(headers[0]); policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) return status; /* * protect plaintext, then compare with ciphertext */ len = sizeof(srtp_plaintext_ref); status = srtp_protect(srtp_snd, srtp_plaintext, &len); if (status || (len != sizeof(srtp_plaintext))) return srtp_err_status_fail; debug_print(mod_driver, "ciphertext:\n %s", srtp_octet_string_hex_string(srtp_plaintext, len)); debug_print(mod_driver, "ciphertext reference:\n %s", srtp_octet_string_hex_string(srtp_ciphertext, len)); if (octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) return srtp_err_status_fail; /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) return status; /* * unprotect ciphertext, then compare with plaintext */ status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len); if (status) { return status; } else if (len != sizeof(srtp_plaintext_ref)) { return srtp_err_status_fail; } if (octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) return srtp_err_status_fail; status = srtp_dealloc(srtp_snd); if (status) return status; status = srtp_dealloc(srtp_recv); if (status) return status; return srtp_err_status_ok; } #endif /* * srtp_validate_aes_256() verifies the correctness of libsrtp by comparing * some computed packets against some pre-computed reference values. * These packets were made with the AES-CM-256/HMAC-SHA-1-80 policy. */ srtp_err_status_t srtp_validate_aes_256 () { unsigned char aes_256_test_key[46] = { 0xf0, 0xf0, 0x49, 0x14, 0xb5, 0x13, 0xf2, 0x76, 0x3a, 0x1b, 0x1f, 0xa1, 0x30, 0xf1, 0x0e, 0x29, 0x98, 0xf6, 0xf6, 0xe4, 0x3e, 0x43, 0x09, 0xd1, 0xe6, 0x22, 0xa0, 0xe3, 0x32, 0xb9, 0xf1, 0xb6, 0x3b, 0x04, 0x80, 0x3d, 0xe5, 0x1e, 0xe7, 0xc9, 0x64, 0x23, 0xab, 0x5b, 0x78, 0xd2 }; uint8_t srtp_plaintext_ref[28] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab }; uint8_t srtp_plaintext[38] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t srtp_ciphertext[38] = { 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, 0xca, 0xfe, 0xba, 0xbe, 0xf1, 0xd9, 0xde, 0x17, 0xff, 0x25, 0x1f, 0xf1, 0xaa, 0x00, 0x77, 0x74, 0xb0, 0xb4, 0xb4, 0x0d, 0xa0, 0x8d, 0x9d, 0x9a, 0x5b, 0x3a, 0x55, 0xd8, 0x87, 0x3b }; srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy.rtp); srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = aes_256_test_key; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) { return status; } /* * protect plaintext, then compare with ciphertext */ len = 28; status = srtp_protect(srtp_snd, srtp_plaintext, &len); if (status || (len != 38)) { return srtp_err_status_fail; } debug_print(mod_driver, "ciphertext:\n %s", octet_string_hex_string(srtp_plaintext, len)); debug_print(mod_driver, "ciphertext reference:\n %s", octet_string_hex_string(srtp_ciphertext, len)); if (octet_string_is_eq(srtp_plaintext, srtp_ciphertext, len)) { return srtp_err_status_fail; } /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) { return status; } /* * unprotect ciphertext, then compare with plaintext */ status = srtp_unprotect(srtp_recv, srtp_ciphertext, &len); if (status || (len != 28)) { return status; } if (octet_string_is_eq(srtp_ciphertext, srtp_plaintext_ref, len)) { return srtp_err_status_fail; } status = srtp_dealloc(srtp_snd); if (status) { return status; } status = srtp_dealloc(srtp_recv); if (status) { return status; } return srtp_err_status_ok; } srtp_err_status_t srtp_create_big_policy (srtp_policy_t **list) { extern const srtp_policy_t *policy_array[]; srtp_policy_t *p, *tmp; int i = 0; uint32_t ssrc = 0; /* sanity checking */ if ((list == NULL) || (policy_array[0] == NULL)) { return srtp_err_status_bad_param; } /* * loop over policy list, mallocing a new list and copying values * into it (and incrementing the SSRC value as we go along) */ tmp = NULL; while (policy_array[i] != NULL) { p = (srtp_policy_t*)malloc(sizeof(srtp_policy_t)); if (p == NULL) { return srtp_err_status_bad_param; } memcpy(p, policy_array[i], sizeof(srtp_policy_t)); p->ssrc.type = ssrc_specific; p->ssrc.value = ssrc++; p->next = tmp; tmp = p; i++; } *list = p; return srtp_err_status_ok; } srtp_err_status_t srtp_dealloc_big_policy (srtp_policy_t *list) { srtp_policy_t *p, *next; for (p = list; p != NULL; p = next) { next = p->next; free(p); } return srtp_err_status_ok; } srtp_err_status_t srtp_test_empty_payload() { srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; srtp_hdr_t *mesg; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) { return status; } mesg = srtp_create_test_packet(0, policy.ssrc.value); if (mesg == NULL) { return srtp_err_status_fail; } len = 12; /* only the header */ status = srtp_protect(srtp_snd, mesg, &len); if (status) { return status; } else if (len != 12 + 10) { return srtp_err_status_fail; } /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) { return status; } /* * unprotect ciphertext, then compare with plaintext */ status = srtp_unprotect(srtp_recv, mesg, &len); if (status) { return status; } else if (len != 12) { return srtp_err_status_fail; } status = srtp_dealloc(srtp_snd); if (status) { return status; } status = srtp_dealloc(srtp_recv); if (status) { return status; } free(mesg); return srtp_err_status_ok; } #ifdef OPENSSL srtp_err_status_t srtp_test_empty_payload_gcm() { srtp_t srtp_snd, srtp_recv; srtp_err_status_t status; int len; srtp_policy_t policy; srtp_hdr_t *mesg; /* * create a session with a single stream using the default srtp * policy and with the SSRC value 0xcafebabe */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp); srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; status = srtp_create(&srtp_snd, &policy); if (status) { return status; } mesg = srtp_create_test_packet(0, policy.ssrc.value); if (mesg == NULL) { return srtp_err_status_fail; } len = 12; /* only the header */ status = srtp_protect(srtp_snd, mesg, &len); if (status) { return status; } else if (len != 12 + 8) { return srtp_err_status_fail; } /* * create a receiver session context comparable to the one created * above - we need to do this so that the replay checking doesn't * complain */ status = srtp_create(&srtp_recv, &policy); if (status) { return status; } /* * unprotect ciphertext, then compare with plaintext */ status = srtp_unprotect(srtp_recv, mesg, &len); if (status) { return status; } else if (len != 12) { return srtp_err_status_fail; } status = srtp_dealloc(srtp_snd); if (status) { return status; } status = srtp_dealloc(srtp_recv); if (status) { return status; } free(mesg); return srtp_err_status_ok; } #endif // OPENSSL srtp_err_status_t srtp_test_remove_stream () { srtp_err_status_t status; srtp_policy_t *policy_list, policy; srtp_t session; srtp_stream_t stream; /* * srtp_get_stream() is a libSRTP internal function that we declare * here so that we can use it to verify the correct operation of the * library */ extern srtp_stream_t srtp_get_stream(srtp_t srtp, uint32_t ssrc); status = srtp_create_big_policy(&policy_list); if (status) { return status; } status = srtp_create(&session, policy_list); if (status) { return status; } /* * check for false positives by trying to remove a stream that's not * in the session */ status = srtp_remove_stream(session, htonl(0xaaaaaaaa)); if (status != srtp_err_status_no_ctx) { return srtp_err_status_fail; } /* * check for false negatives by removing stream 0x1, then * searching for streams 0x0 and 0x2 */ status = srtp_remove_stream(session, htonl(0x1)); if (status != srtp_err_status_ok) { return srtp_err_status_fail; } stream = srtp_get_stream(session, htonl(0x0)); if (stream == NULL) { return srtp_err_status_fail; } stream = srtp_get_stream(session, htonl(0x2)); if (stream == NULL) { return srtp_err_status_fail; } status = srtp_dealloc(session); if (status != srtp_err_status_ok) { return status; } status = srtp_dealloc_big_policy(policy_list); if (status != srtp_err_status_ok) { return status; } /* Now test adding and removing a single stream */ memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); policy.ssrc.type = ssrc_specific; policy.ssrc.value = 0xcafebabe; policy.key = test_key; policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; status = srtp_create(&session, NULL); if (status != srtp_err_status_ok) { return status; } status = srtp_add_stream(session, &policy); if (status != srtp_err_status_ok) { return status; } status = srtp_remove_stream(session, htonl(0xcafebabe)); if (status != srtp_err_status_ok) { return status; } status = srtp_dealloc(session); if (status != srtp_err_status_ok) { return status; } return srtp_err_status_ok; } unsigned char test_alt_key[46] = { 0xe5, 0x19, 0x6f, 0x01, 0x5e, 0xf1, 0x9b, 0xe1, 0xd7, 0x47, 0xa7, 0x27, 0x07, 0xd7, 0x47, 0x33, 0x01, 0xc2, 0x35, 0x4d, 0x59, 0x6a, 0xf7, 0x84, 0x96, 0x98, 0xeb, 0xaa, 0xac, 0xf6, 0xa1, 0x45, 0xc7, 0x15, 0xe2, 0xea, 0xfe, 0x55, 0x67, 0x96, 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6 }; /* * srtp_test_update() verifies updating/rekeying exsisting streams. * As stated in https://tools.ietf.org/html/rfc3711#section-3.3.1 * the value of the ROC must not be reset after a rekey, this test * atempts to prove that srtp_update does not reset the ROC. */ srtp_err_status_t srtp_test_update() { srtp_err_status_t status; uint32_t ssrc = 0x12121212; int msg_len_octets = 32; int protected_msg_len_octets; srtp_hdr_t * msg; srtp_t srtp_snd, srtp_recv; srtp_policy_t policy; memset(&policy, 0, sizeof(policy)); srtp_crypto_policy_set_rtp_default(&policy.rtp); srtp_crypto_policy_set_rtcp_default(&policy.rtcp); policy.ekt = NULL; policy.window_size = 128; policy.allow_repeat_tx = 0; policy.next = NULL; policy.ssrc.type = ssrc_any_outbound; policy.key = test_key; /* create a send and recive ctx with defualt profile and test_key */ status = srtp_create(&srtp_recv, &policy); if (status) return status; policy.ssrc.type = ssrc_any_inbound; status = srtp_create(&srtp_snd, &policy); if (status) return status; /* protect and unprotect two msg's that will cause the ROC to be equal to 1 */ msg = srtp_create_test_packet(msg_len_octets, ssrc); if (msg == NULL) return srtp_err_status_alloc_fail; msg->seq = htons(65535); protected_msg_len_octets = msg_len_octets; status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets); if (status) return srtp_err_status_fail; status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets); if (status) return status; free(msg); msg = srtp_create_test_packet(msg_len_octets, ssrc); if (msg == NULL) return srtp_err_status_alloc_fail; msg->seq = htons(1); protected_msg_len_octets = msg_len_octets; status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets); if (status) return srtp_err_status_fail; status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets); if (status) return status; free(msg); /* update send ctx with same test_key t verify update works*/ policy.ssrc.type = ssrc_any_outbound; policy.key = test_key; status = srtp_update(srtp_snd, &policy); if (status) return status; msg = srtp_create_test_packet(msg_len_octets, ssrc); if (msg == NULL) return srtp_err_status_alloc_fail; msg->seq = htons(2); protected_msg_len_octets = msg_len_octets; status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets); if (status) return srtp_err_status_fail; status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets); if (status) return status; free(msg); /* update send ctx to use test_alt_key */ policy.ssrc.type = ssrc_any_outbound; policy.key = test_alt_key; status = srtp_update(srtp_snd, &policy); if (status) return status; /* create and protect msg with new key and ROC still equal to 1 */ msg = srtp_create_test_packet(msg_len_octets, ssrc); if (msg == NULL) return srtp_err_status_alloc_fail; msg->seq = htons(3); protected_msg_len_octets = msg_len_octets; status = srtp_protect(srtp_snd, msg, &protected_msg_len_octets); if (status) return srtp_err_status_fail; /* verify that recive ctx will fail to unprotect as it still uses test_key */ status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets); if (status == srtp_err_status_ok) return srtp_err_status_fail; /* create a new recvieve ctx with test_alt_key but since it is new it will have ROC equal to 1 * and therefore should fail to unprotected */ { srtp_t srtp_recv_roc_0; policy.ssrc.type = ssrc_any_inbound; policy.key = test_alt_key; status = srtp_create(&srtp_recv_roc_0, &policy); if (status) return status; status = srtp_unprotect(srtp_recv_roc_0, msg, &protected_msg_len_octets); if (status == srtp_err_status_ok) return srtp_err_status_fail; status = srtp_dealloc(srtp_recv_roc_0); if (status) return status; } /* update recive ctx to use test_alt_key */ policy.ssrc.type = ssrc_any_inbound; policy.key = test_alt_key; status = srtp_update(srtp_recv, &policy); if (status) return status; /* verify that can still unprotect, therfore key is updated and ROC value is preserved */ status = srtp_unprotect(srtp_recv, msg, &protected_msg_len_octets); if (status) return status; free(msg); status = srtp_dealloc(srtp_snd); if (status) return status; status = srtp_dealloc(srtp_recv); if (status) return status; return srtp_err_status_ok; } /* * srtp policy definitions - these definitions are used above */ unsigned char test_key[46] = { 0xe1, 0xf9, 0x7a, 0x0d, 0x3e, 0x01, 0x8b, 0xe0, 0xd6, 0x4f, 0xa3, 0x2c, 0x06, 0xde, 0x41, 0x39, 0x0e, 0xc6, 0x75, 0xad, 0x49, 0x8a, 0xfe, 0xeb, 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6, 0xc1, 0x73, 0xc3, 0x17, 0xf2, 0xda, 0xbe, 0x35, 0x77, 0x93, 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6 }; const srtp_policy_t default_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_128_ICM, /* cipher type */ 30, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 16, /* auth key length in octets */ 10, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_128_ICM, /* cipher type */ 30, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 16, /* auth key length in octets */ 10, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; const srtp_policy_t aes_only_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { SRTP_AES_128_ICM, /* cipher type */ 30, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 0, /* auth tag length in octets */ sec_serv_conf /* security services flag */ }, { SRTP_AES_128_ICM, /* cipher type */ 30, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 0, /* auth tag length in octets */ sec_serv_conf /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; const srtp_policy_t hmac_only_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { SRTP_NULL_CIPHER, /* cipher type */ 0, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 20, /* auth key length in octets */ 4, /* auth tag length in octets */ sec_serv_auth /* security services flag */ }, { SRTP_NULL_CIPHER, /* cipher type */ 0, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 20, /* auth key length in octets */ 4, /* auth tag length in octets */ sec_serv_auth /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; #ifdef OPENSSL const srtp_policy_t aes128_gcm_8_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_128_GCM, /* cipher type */ SRTP_AES_128_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_128_GCM, /* cipher type */ SRTP_AES_128_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; const srtp_policy_t aes128_gcm_8_cauth_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_128_GCM, /* cipher type */ SRTP_AES_128_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_128_GCM, /* cipher type */ SRTP_AES_128_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_auth /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; const srtp_policy_t aes256_gcm_8_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_256_GCM, /* cipher type */ SRTP_AES_256_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_256_GCM, /* cipher type */ SRTP_AES_256_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; const srtp_policy_t aes256_gcm_8_cauth_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_256_GCM, /* cipher type */ SRTP_AES_256_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_256_GCM, /* cipher type */ SRTP_AES_256_GCM_KEYSIZE_WSALT, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 8, /* auth tag length in octets */ sec_serv_auth /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; #endif const srtp_policy_t null_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { SRTP_NULL_CIPHER, /* cipher type */ 0, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 0, /* auth tag length in octets */ sec_serv_none /* security services flag */ }, { SRTP_NULL_CIPHER, /* cipher type */ 0, /* cipher key length in octets */ SRTP_NULL_AUTH, /* authentication func type */ 0, /* auth key length in octets */ 0, /* auth tag length in octets */ sec_serv_none /* security services flag */ }, test_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; unsigned char test_256_key[46] = { 0xf0, 0xf0, 0x49, 0x14, 0xb5, 0x13, 0xf2, 0x76, 0x3a, 0x1b, 0x1f, 0xa1, 0x30, 0xf1, 0x0e, 0x29, 0x98, 0xf6, 0xf6, 0xe4, 0x3e, 0x43, 0x09, 0xd1, 0xe6, 0x22, 0xa0, 0xe3, 0x32, 0xb9, 0xf1, 0xb6, 0x3b, 0x04, 0x80, 0x3d, 0xe5, 0x1e, 0xe7, 0xc9, 0x64, 0x23, 0xab, 0x5b, 0x78, 0xd2 }; const srtp_policy_t aes_256_hmac_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_ICM, /* cipher type */ 46, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 20, /* auth key length in octets */ 10, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_ICM, /* cipher type */ 46, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 20, /* auth key length in octets */ 10, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, test_256_key, NULL, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; uint8_t ekt_test_key[16] = { 0x77, 0x26, 0x9d, 0xac, 0x16, 0xa3, 0x28, 0xca, 0x8e, 0xc9, 0x68, 0x4b, 0xcc, 0xc4, 0xd2, 0x1b }; #include "ekt.h" srtp_ekt_policy_ctx_t ekt_test_policy = { 0xa5a5, /* SPI */ SRTP_EKT_CIPHER_AES_128_ECB, ekt_test_key, NULL }; const srtp_policy_t hmac_only_with_ekt_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { SRTP_NULL_CIPHER, /* cipher type */ 0, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 20, /* auth key length in octets */ 4, /* auth tag length in octets */ sec_serv_auth /* security services flag */ }, { SRTP_NULL_CIPHER, /* cipher type */ 0, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 20, /* auth key length in octets */ 4, /* auth tag length in octets */ sec_serv_auth /* security services flag */ }, test_key, &ekt_test_policy, /* indicates that EKT is not in use */ 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; /* * an array of pointers to the policies listed above * * This array is used to test various aspects of libSRTP for * different cryptographic policies. The order of the elements * matters - the timing test generates output that can be used * in a plot (see the gnuplot script file 'timing'). If you * add to this list, you should do it at the end. */ const srtp_policy_t * policy_array[] = { &hmac_only_policy, &aes_only_policy, &default_policy, #ifdef OPENSSL &aes128_gcm_8_policy, &aes128_gcm_8_cauth_policy, &aes256_gcm_8_policy, &aes256_gcm_8_cauth_policy, #endif &null_policy, &aes_256_hmac_policy, &hmac_only_with_ekt_policy, NULL }; const srtp_policy_t wildcard_policy = { { ssrc_any_outbound, 0 }, /* SSRC */ { /* SRTP policy */ SRTP_AES_128_ICM, /* cipher type */ 30, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 16, /* auth key length in octets */ 10, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, { /* SRTCP policy */ SRTP_AES_128_ICM, /* cipher type */ 30, /* cipher key length in octets */ SRTP_HMAC_SHA1, /* authentication func type */ 16, /* auth key length in octets */ 10, /* auth tag length in octets */ sec_serv_conf_and_auth /* security services flag */ }, test_key, NULL, 128, /* replay window size */ 0, /* retransmission not allowed */ NULL, /* no encrypted extension headers */ 0, /* list of encrypted extension headers is empty */ NULL }; ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/util.c����������������������������������������0000664�0000000�0000000�00000011656�13041410345�0021664�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * util.c * * Utilities used by the test apps * * John A. Foley * Cisco Systems, Inc. */ /* * * Copyright (c) 2014, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <string.h> #include <stdint.h> #include "util.h" char bit_string[MAX_PRINT_STRING_LEN]; static inline int hex_char_to_nibble (uint8_t c) { switch (c) { case ('0'): return 0x0; case ('1'): return 0x1; case ('2'): return 0x2; case ('3'): return 0x3; case ('4'): return 0x4; case ('5'): return 0x5; case ('6'): return 0x6; case ('7'): return 0x7; case ('8'): return 0x8; case ('9'): return 0x9; case ('a'): return 0xa; case ('A'): return 0xa; case ('b'): return 0xb; case ('B'): return 0xb; case ('c'): return 0xc; case ('C'): return 0xc; case ('d'): return 0xd; case ('D'): return 0xd; case ('e'): return 0xe; case ('E'): return 0xe; case ('f'): return 0xf; case ('F'): return 0xf; default: return -1; /* this flags an error */ } /* NOTREACHED */ return -1; /* this keeps compilers from complaining */ } uint8_t nibble_to_hex_char (uint8_t nibble) { char buf[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; return buf[nibble & 0xF]; } /* * hex_string_to_octet_string converts a hexadecimal string * of length 2 * len to a raw octet string of length len */ int hex_string_to_octet_string (char *raw, char *hex, int len) { uint8_t x; int tmp; int hex_len; hex_len = 0; while (hex_len < len) { tmp = hex_char_to_nibble(hex[0]); if (tmp == -1) { return hex_len; } x = (tmp << 4); hex_len++; tmp = hex_char_to_nibble(hex[1]); if (tmp == -1) { return hex_len; } x |= (tmp & 0xff); hex_len++; *raw++ = x; hex += 2; } return hex_len; } char * octet_string_hex_string (const void *s, int length) { const uint8_t *str = (const uint8_t*)s; int i; /* double length, since one octet takes two hex characters */ length *= 2; /* truncate string if it would be too long */ if (length > MAX_PRINT_STRING_LEN) { length = MAX_PRINT_STRING_LEN - 1; } for (i = 0; i < length; i += 2) { bit_string[i] = nibble_to_hex_char(*str >> 4); bit_string[i + 1] = nibble_to_hex_char(*str++ & 0xF); } bit_string[i] = 0; /* null terminate string */ return bit_string; } static const char b64chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz0123456789+/"; static int base64_block_to_octet_triple (char *out, char *in) { unsigned char sextets[4] = {0}; int j = 0; int i; for (i = 0; i < 4; i++) { char *p = strchr(b64chars, in[i]); if (p != NULL) { sextets[i] = p - b64chars; } else{ j++; } } out[0] = (sextets[0] << 2) | (sextets[1] >> 4); if (j < 2) { out[1] = (sextets[1] << 4) | (sextets[2] >> 2); } if (j < 1) { out[2] = (sextets[2] << 6) | sextets[3]; } return j; } int base64_string_to_octet_string (char *out, int *pad, char *in, int len) { int k = 0; int i = 0; int j = 0; if (len % 4 != 0) { return 0; } while (i < len && j == 0) { j = base64_block_to_octet_triple(out + k, in + i); k += 3; i += 4; } *pad = j; return i; } ����������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/test/util.h����������������������������������������0000664�0000000�0000000�00000003673�13041410345�0021671�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������/* * util.h * * Utilities used by the test apps * * John A. Foley * Cisco Systems, Inc. */ /* * * Copyright (c) 2014, Cisco Systems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of the Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef _UTIL_H #define _UTIL_H #define MAX_PRINT_STRING_LEN 1024 int hex_string_to_octet_string(char *raw, char *hex, int len); char * octet_string_hex_string(const void *s, int length); int base64_string_to_octet_string(char *raw, int *pad, char *base64, int len); #endif ���������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/timing���������������������������������������������0000664�0000000�0000000�00000002172�13041410345�0020767�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������# timing.plt # # gnuplot script file for plotting the output generated by srtp_driver -t # # David A. McGrew # Cisco Systems, Inc. # set xrange [0:2500] set term pict "Times-Roman" 9 # # plot authentication-only data # set title "Authentication Only" set ylabel "Megabits per second" set xlabel "Octets in packet" set yrange [0:2000] set output "plot-auth.pict" plot "timing.dat" index 0 title "HMAC SHA1" with lines, "timing.dat" index 1 title "TMMH/AES" with lines, "timing.dat" index 2 title "TMMH/SEAL" with lines # # plot encryption-only data # set title "Encryption Only" set ylabel "Megabits per second" set xlabel "Octets in packet" set output "plot-enc.pict" set yrange [0:1200] plot "timing.dat" index 3 title "SEAL" with lines, "timing.dat" index 4 title "AES ICM" with lines # # plot encryption and authentication data # set title "Encryption and Authentication" set ylabel "Megabits per second" set xlabel "Octets in packet" set yrange [0:1000] set output "plot-enc-auth.pict" plot "timing.dat" index 5 title "TMMH/SEAL" with lines, "timing.dat" index 6 title "TMMH/AES" with lines, "timing.dat" index 7 title "HMAC/AES" with lines������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/undos.sh�������������������������������������������0000775�0000000�0000000�00000000247�13041410345�0021245�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/bin/sh # # usage: undos <file> # # strips CRs from a file - useful when moving DOS-created files # onto UN*X machines cat $1 | tr -d "\r" > $1.tmp mv $1.tmp $1 ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������libsrtp-520698fb248782282916918ffbd4c081f54754a1/update.sh������������������������������������������0000775�0000000�0000000�00000000274�13041410345�0021377�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/bin/sh # # update.sh # # update copyright dates in files a=`find . -name "*.[ch]"` for x in $a; do sed 's/(c) 2001-2005/(c) 2001-2006/' $x > $x.tmp; mv $x.tmp $x; done ��������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������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