pax_global_header 0000666 0000000 0000000 00000000064 12547452055 0014523 g ustar 00root root 0000000 0000000 52 comment=5d641a8170a08e9e2dff2b6832511d99d85b735c
libscrypt-1.21/ 0000775 0000000 0000000 00000000000 12547452055 0013461 5 ustar 00root root 0000000 0000000 libscrypt-1.21/.gitignore 0000664 0000000 0000000 00000000061 12547452055 0015446 0 ustar 00root root 0000000 0000000 *.o
*.so
*.so.0
*.a
reference
endian.h
byteorder
libscrypt-1.21/LICENSE 0000664 0000000 0000000 00000002405 12547452055 0014467 0 ustar 00root root 0000000 0000000 Copyright (c) 2013, Joshua Small
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.
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 HOLDER 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.
libscrypt-1.21/Makefile 0000664 0000000 0000000 00000004211 12547452055 0015117 0 ustar 00root root 0000000 0000000 PREFIX ?= /usr/local
LIBDIR ?= $(PREFIX)/lib
INCLUDEDIR ?= $(PREFIX)/include
MAKE_DIR ?= install -d
INSTALL_DATA ?= install
CC?=gcc
CFLAGS?=-O2 -Wall -g -D_FORTIFY_SOURCE=2 -fstack-protector -fPIC
LDFLAGS?=-Wl,-z,now -Wl,-z,relro -Wl,-soname,libscrypt.so.0 -Wl,--version-script=libscrypt.version
CFLAGS_EXTRA?=-Wl,-rpath=.
all: reference
OBJS= crypto_scrypt-nosse.o sha256.o crypto-mcf.o b64.o crypto-scrypt-saltgen.o crypto_scrypt-check.o crypto_scrypt-hash.o slowequals.o
libscrypt.so.0: $(OBJS)
$(CC) $(LDFLAGS) -shared -o libscrypt.so.0 $(OBJS) -lm -lc
ar rcs libscrypt.a $(OBJS)
reference: libscrypt.so.0 main.o crypto_scrypt-hexconvert.o
ln -s -f libscrypt.so.0 libscrypt.so
$(CC) -Wall -o reference main.o b64.o crypto_scrypt-hexconvert.o $(CFLAGS_EXTRA) -L. -lscrypt
clean:
rm -f *.o reference libscrypt.so* libscrypt.a endian.h
check: all
./reference
devtest:
splint crypto_scrypt-hexconvert.c
splint crypto-mcf.c crypto_scrypt-check.c crypto_scrypt-hash.c -unrecog
splint crypto-scrypt-saltgen.c +posixlib -compdef
valgrind ./reference
asan: main.c
clang -O1 -g -fsanitize=address -fno-omit-frame-pointer *.c -o asantest
./asantest
scan-build clang -O1 -g -fsanitize=undefined -fno-omit-frame-pointer *.c -o asantest
./asantest
rm -f asantest
install: libscrypt.so.0
$(MAKE_DIR) $(DESTDIR) $(DESTDIR)$(PREFIX) $(DESTDIR)$(LIBDIR) $(DESTDIR)$(INCLUDEDIR)
$(INSTALL_DATA) -pm 0755 libscrypt.so.0 $(DESTDIR)$(LIBDIR)
cd $(DESTDIR)$(LIBDIR) && ln -s -f libscrypt.so.0 $(DESTDIR)$(LIBDIR)/libscrypt.so
$(INSTALL_DATA) -pm 0644 libscrypt.h $(DESTDIR)$(INCLUDEDIR)
install-osx: libscrypt.so.0
$(MAKE_DIR) $(DESTDIR) $(DESTDIR)$(PREFIX) $(DESTDIR)$(LIBDIR) $(DESTDIR)$(INCLUDEDIR)
$(INSTALL_DATA) -pm 0755 libscrypt.so.0 $(DESTDIR)$(LIBDIR)/libscrypt.0.dylib
cd $(DESTDIR)$(LIBDIR) && install_name_tool -id $(DESTDIR)$(LIBDIR)/libscrypt.0.dylib $(DESTDIR)$(LIBDIR)/libscrypt.0.dylib
cd $(DESTDIR)$(LIBDIR) && ln -s -f libscrypt.0.dylib $(DESTDIR)$(LIBDIR)/libscrypt.dylib
$(INSTALL_DATA) -pm 0644 libscrypt.h $(DESTDIR)$(INCLUDEDIR)
install-static: libscrypt.a
$(INSTALL_DATA) -pm 0644 libscrypt.a $(DESTDIR)$(LIBDIR)
libscrypt-1.21/README.md 0000664 0000000 0000000 00000011010 12547452055 0014731 0 ustar 00root root 0000000 0000000 libscrypt
=========
Linux scrypt shared library.
Full credit to algorithm designer and example code from Colin Percival here:
http://www.tarsnap.com/scrypt.html
Utilises BASE64 encoding library from ISC.
Official project page, including stable tarballs found here:
http://www.lolware.net/libscrypt.html
Simple hashing interface
The (reference) internal hashing function can be directly called as follows:
int libscrypt_scrypt(const uint8_t *passwd, size_t passwdlen,
const uint8_t *salt, size_t saltlen, uint64_t N, uint32_t r,
uint32_t p, /*@out@*/ uint8_t *buf, size_t buflen);
Libscrypt's easier to use interface wraps this up to deal with the salt and produce BASE64 output as so:
int libscrypt_hash(char *dst, char *passphrase, uint32_t N, uint8_t r, uint8_t p);
Sane constants have been created for N, r and p so you can create a hash like this:
libscrypt_hash(outbuf, "My cats's breath smells like cat food", SCRYPT_N, SCRYPT_r, SCRYPT_p);
This function sets errno as required for any error conditions.
Output stored in "outbuf" is stored in a standardised MCF form, which means includes the randomly created, 128 bit salt, all N, r and p values, and a BASE64 encoded version of the hash. The entire MCF can be stored in a database, and compared for use as below:
retval = libscrypt_check(mcf, "pleasefailme");
retval < 0 error
retval = 0 password incorrect
retval > 0 pass
mcf should be defined as at least SCRYPT_MCF_LEN in size.
Note that libscrypt_check needs to modify the mcf string and will not return it
to the original state. Pass it a copy if you need to keep the original mcf.
A number of internal functions are exposed, and users wishing to create more complex use cases should consult the header file, which is aimed at documenting the API fully.
The test reference is also aimed at providing a well documented use case.
Building
--------
make
make check
Check the Makefile for advice on linking against your application.
OSX
-----
Please compile and install with:
make LDFLAGS= CFLAGS_EXTRA=
make install-osx
BUGS
----
SCRYPT_* constants are probably a little high for something like a Raspberry pi. Using '1' as SCRYPT_p is acceptable from a security and performance standpoint if needed.
Experiments were performed with using memset() to zero out passwords as they were checked. This often caused issues with calling applications where the password based have been passed as a const*. We highly recommend implementing your own zeroing function the moment this library is called.
Notes on Code Development
------------------------
Code is now declared "stable", the master branch will always be "stable" and development will be done on branches.
The reference machines are Fedora, CentOS, FreeBSD and Raspbian, and the code is expected to compile and run on all of these before being moved to stable branch.
Full transparancy on the regular application of thorough testing can be found by reviewing recent test harness results here:
http://www.lolware.net/libscrypttesting.txt
Please, no more pull requests for Windows compatibility. If it's important to you - fork the project. I have no intention of pulling an OpenSSL and becoming a maze of ifdefs for platforms I don't even have a build environment for.
I utilise Facebook's "infer" static analyser, in addition to clang's analyzer. Command to run is:
infer -- make
Contact
-------
I can be contacted at: technion@lolware.net
If required, my GPG key can be found at: https://lolware.net/technion-GPG-KEY
Future releases will have the Git tag signed.
Changenotes
-----------
v1.1a: Single Makefile line change. I wouldn't ordinarily tag this as a new "release", but the purpose here is to assist with packaging in distributions.
v1.12: The static library is built, but no longer installed by default. You can install it with "make install-static". This is because static libraries are not typically bundled in packages.
v1.13: Minor packaging related update
v1.15: Replaced the b64 libraries with more portable one from ISC. Now tested and verified on a wider variety of architectures. Note, libscrypt_b64_encrypt was originally an exported function. This is no longer the case as it is considered an internal function only.
v1.18: God damnit Apple
v1.19: Code safety cleanups. Now running Coverity.
v1.20: Bigfixes involving large N values, return values on error
libscrypt-1.21/b64.c 0000664 0000000 0000000 00000024214 12547452055 0014223 0 ustar 00root root 0000000 0000000 /*
* Copyright (c) 1996 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/*
* Portions Copyright (c) 1995 by International Business Machines, Inc.
*
* International Business Machines, Inc. (hereinafter called IBM) grants
* permission under its copyrights to use, copy, modify, and distribute this
* Software with or without fee, provided that the above copyright notice and
* all paragraphs of this notice appear in all copies, and that the name of IBM
* not be used in connection with the marketing of any product incorporating
* the Software or modifications thereof, without specific, written prior
* permission.
*
* To the extent it has a right to do so, IBM grants an immunity from suit
* under its patents, if any, for the use, sale or manufacture of products to
* the extent that such products are used for performing Domain Name System
* dynamic updates in TCP/IP networks by means of the Software. No immunity is
* granted for any product per se or for any other function of any product.
*
* THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
* DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
* IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/
/*
* Base64 encode/decode functions from OpenBSD (src/lib/libc/net/base64.c).
*/
#include
#include
#include
#include
#include
#include "b64.h"
static const char Base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char Pad64 = '=';
/* (From RFC1521 and draft-ietf-dnssec-secext-03.txt)
The following encoding technique is taken from RFC 1521 by Borenstein
and Freed. It is reproduced here in a slightly edited form for
convenience.
A 65-character subset of US-ASCII is used, enabling 6 bits to be
represented per printable character. (The extra 65th character, "=",
is used to signify a special processing function.)
The encoding process represents 24-bit groups of input bits as output
strings of 4 encoded characters. Proceeding from left to right, a
24-bit input group is formed by concatenating 3 8-bit input groups.
These 24 bits are then treated as 4 concatenated 6-bit groups, each
of which is translated into a single digit in the base64 alphabet.
Each 6-bit group is used as an index into an array of 64 printable
characters. The character referenced by the index is placed in the
output string.
Table 1: The Base64 Alphabet
Value Encoding Value Encoding Value Encoding Value Encoding
0 A 17 R 34 i 51 z
1 B 18 S 35 j 52 0
2 C 19 T 36 k 53 1
3 D 20 U 37 l 54 2
4 E 21 V 38 m 55 3
5 F 22 W 39 n 56 4
6 G 23 X 40 o 57 5
7 H 24 Y 41 p 58 6
8 I 25 Z 42 q 59 7
9 J 26 a 43 r 60 8
10 K 27 b 44 s 61 9
11 L 28 c 45 t 62 +
12 M 29 d 46 u 63 /
13 N 30 e 47 v
14 O 31 f 48 w (pad) =
15 P 32 g 49 x
16 Q 33 h 50 y
Special processing is performed if fewer than 24 bits are available
at the end of the data being encoded. A full encoding quantum is
always completed at the end of a quantity. When fewer than 24 input
bits are available in an input group, zero bits are added (on the
right) to form an integral number of 6-bit groups. Padding at the
end of the data is performed using the '=' character.
Since all base64 input is an integral number of octets, only the
-------------------------------------------------
following cases can arise:
(1) the final quantum of encoding input is an integral
multiple of 24 bits; here, the final unit of encoded
output will be an integral multiple of 4 characters
with no "=" padding,
(2) the final quantum of encoding input is exactly 8 bits;
here, the final unit of encoded output will be two
characters followed by two "=" padding characters, or
(3) the final quantum of encoding input is exactly 16 bits;
here, the final unit of encoded output will be three
characters followed by one "=" padding character.
*/
int
libscrypt_b64_encode(src, srclength, target, targsize)
unsigned char const *src;
size_t srclength;
char *target;
size_t targsize;
{
size_t datalength = 0;
unsigned char input[3];
unsigned char output[4];
unsigned int i;
while (2 < srclength) {
input[0] = *src++;
input[1] = *src++;
input[2] = *src++;
srclength -= 3;
output[0] = input[0] >> 2;
output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
output[3] = input[2] & 0x3f;
if (datalength + 4 > targsize)
return (-1);
target[datalength++] = Base64[output[0]];
target[datalength++] = Base64[output[1]];
target[datalength++] = Base64[output[2]];
target[datalength++] = Base64[output[3]];
}
/* Now we worry about padding. */
if (0 != srclength) {
/* Get what's left. */
input[0] = input[1] = input[2] = '\0';
for (i = 0; i < srclength; i++)
input[i] = *src++;
output[0] = input[0] >> 2;
output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
if (datalength + 4 > targsize)
return (-1);
target[datalength++] = Base64[output[0]];
target[datalength++] = Base64[output[1]];
if (srclength == 1)
target[datalength++] = Pad64;
else
target[datalength++] = Base64[output[2]];
target[datalength++] = Pad64;
}
if (datalength >= targsize)
return (-1);
target[datalength] = '\0'; /* Returned value doesn't count \0. */
return (int)(datalength);
}
/* skips all whitespace anywhere.
converts characters, four at a time, starting at (or after)
src from base - 64 numbers into three 8 bit bytes in the target area.
it returns the number of data bytes stored at the target, or -1 on error.
*/
int
libscrypt_b64_decode(src, target, targsize)
char const *src;
unsigned char *target;
size_t targsize;
{
int state, ch;
unsigned int tarindex;
unsigned char nextbyte;
char *pos;
state = 0;
tarindex = 0;
while ((ch = (unsigned char)*src++) != '\0') {
if (isspace(ch)) /* Skip whitespace anywhere. */
continue;
if (ch == Pad64)
break;
pos = strchr(Base64, ch);
if (pos == 0) /* A non-base64 character. */
return (-1);
switch (state) {
case 0:
if (target) {
if (tarindex >= targsize)
return (-1);
target[tarindex] = (pos - Base64) << 2;
}
state = 1;
break;
case 1:
if (target) {
if (tarindex >= targsize)
return (-1);
target[tarindex] |= (pos - Base64) >> 4;
nextbyte = ((pos - Base64) & 0x0f) << 4;
if (tarindex + 1 < targsize)
target[tarindex+1] = nextbyte;
else if (nextbyte)
return (-1);
}
tarindex++;
state = 2;
break;
case 2:
if (target) {
if (tarindex >= targsize)
return (-1);
target[tarindex] |= (pos - Base64) >> 2;
nextbyte = ((pos - Base64) & 0x03) << 6;
if (tarindex + 1 < targsize)
target[tarindex+1] = nextbyte;
else if (nextbyte)
return (-1);
}
tarindex++;
state = 3;
break;
case 3:
if (target) {
if (tarindex >= targsize)
return (-1);
target[tarindex] |= (pos - Base64);
}
tarindex++;
state = 0;
break;
}
}
/*
* We are done decoding Base-64 chars. Let's see if we ended
* on a byte boundary, and/or with erroneous trailing characters.
*/
if (ch == Pad64) { /* We got a pad char. */
ch = (unsigned char)*src++; /* Skip it, get next. */
switch (state) {
case 0: /* Invalid = in first position */
case 1: /* Invalid = in second position */
return (-1);
case 2: /* Valid, means one byte of info */
/* Skip any number of spaces. */
for (; ch != '\0'; ch = (unsigned char)*src++)
if (!isspace(ch))
break;
/* Make sure there is another trailing = sign. */
if (ch != Pad64)
return (-1);
ch = (unsigned char)*src++; /* Skip the = */
/* Fall through to "single trailing =" case. */
/* FALLTHROUGH */
case 3: /* Valid, means two bytes of info */
/*
* We know this char is an =. Is there anything but
* whitespace after it?
*/
for (; ch != '\0'; ch = (unsigned char)*src++)
if (!isspace(ch))
return (-1);
/*
* Now make sure for cases 2 and 3 that the "extra"
* bits that slopped past the last full byte were
* zeros. If we don't check them, they become a
* subliminal channel.
*/
if (target && tarindex < targsize &&
target[tarindex] != 0)
return (-1);
}
} else {
/*
* We ended by seeing the end of the string. Make sure we
* have no partial bytes lying around.
*/
if (state != 0)
return (-1);
}
return (tarindex);
}
libscrypt-1.21/b64.h 0000664 0000000 0000000 00000000626 12547452055 0014231 0 ustar 00root root 0000000 0000000
/* BASE64 libraries used internally - should not need to be packaged */
#include
#define b64_encode_len(A) ((A+2)/3 * 4 + 1)
#define b64_decode_len(A) (A / 4 * 3 + 2)
int libscrypt_b64_encode(unsigned char const *src, size_t srclength,
/*@out@*/ char *target, size_t targetsize);
int libscrypt_b64_decode(char const *src, /*@out@*/ unsigned char *target,
size_t targetsize);
libscrypt-1.21/crypto-mcf.c 0000664 0000000 0000000 00000002700 12547452055 0015707 0 ustar 00root root 0000000 0000000 #include
#include
#include
#include
#include
#include
#include
#ifndef S_SPLINT_S /* Including this here triggers a known bug in splint */
#include
#endif
#include "libscrypt.h"
/* ilog2 for powers of two */
static uint32_t scrypt_ilog2(uint32_t n)
{
#ifndef S_SPLINT_S
/* Check for a valid power of two */
if (n < 2 || (n & (n - 1)))
return -1;
#endif
uint32_t t = 1;
while (((uint32_t)1 << t) < n)
{
if(t > SCRYPT_SAFE_N)
return (uint32_t) -1; /* Check for insanity */
t++;
}
return t;
}
#ifdef _MSC_VER
#define SNPRINTF _snprintf
#else
#define SNPRINTF snprintf
#endif
int libscrypt_mcf(uint32_t N, uint32_t r, uint32_t p, const char *salt,
const char *hash, char *mcf)
{
uint32_t t, params;
int s;
if(!mcf || !hash)
return 0;
/* Although larger values of r, p are valid in scrypt, this mcf format
* limits to 8 bits. If your number is larger, current computers will
* struggle
*/
if(r > (uint8_t)(-1) || p > (uint8_t)(-1))
return 0;
t = scrypt_ilog2(N);
if (t < 1)
return 0;
params = (r << 8) + p;
params += (uint32_t)t << 16;
/* Using snprintf - not checking for overflows. We've already
* determined that mcf should be defined as at least SCRYPT_MCF_LEN
* in length
*/
s = SNPRINTF(mcf, SCRYPT_MCF_LEN, SCRYPT_MCF_ID "$%06x$%s$%s", (unsigned int)params, salt, hash);
if (s >= SCRYPT_MCF_LEN)
return 0;
return 1;
}
libscrypt-1.21/crypto-scrypt-saltgen.c 0000664 0000000 0000000 00000001443 12547452055 0020124 0 ustar 00root root 0000000 0000000 #include
#include
#include
#include
#include
#ifndef S_SPLINT_S /* Including this here triggers a known bug in splint */
#include
#endif
#define RNGDEV "/dev/urandom"
int libscrypt_salt_gen(uint8_t *salt, size_t len)
{
unsigned char buf[len];
size_t data_read = 0;
int urandom = open(RNGDEV, O_RDONLY);
if (urandom < 0)
{
return -1;
}
while (data_read < len) {
ssize_t result = read(urandom, buf + data_read, len - data_read);
if (result < 0)
{
if (errno == EINTR || errno == EAGAIN) {
continue;
}
else {
(void)close(urandom);
return -1;
}
}
data_read += result;
}
/* Failures on close() shouldn't occur with O_RDONLY */
(void)close(urandom);
memcpy(salt, buf, len);
return 0;
}
libscrypt-1.21/crypto_scrypt-check.c 0000664 0000000 0000000 00000003657 12547452055 0017637 0 ustar 00root root 0000000 0000000 #include
#include
#include
#include
#include "b64.h"
#include "slowequals.h"
#include "libscrypt.h"
#ifdef _WIN32
/* On windows, strtok uses a thread-local static variable in strtok to
* make strtok thread-safe. It also neglects to provide a strtok_r. */
#define strtok_r(str, val, saveptr) strtok((str), (val))
#endif
int libscrypt_check(char *mcf, const char *password)
{
/* Return values:
* <0 error
* == 0 password incorrect
* >0 correct password
*/
#ifndef _WIN32
char *saveptr = NULL;
#endif
uint32_t params;
uint64_t N;
uint8_t r, p;
int retval;
uint8_t hashbuf[64];
char outbuf[128];
uint8_t salt[32];
char *tok;
if(mcf == NULL)
{
return -1;
}
if(memcmp(mcf, SCRYPT_MCF_ID, 3) != 0)
{
/* Only version 0 supported */
return -1;
}
tok = strtok_r(mcf, "$", &saveptr);
if ( !tok )
return -1;
tok = strtok_r(NULL, "$", &saveptr);
if ( !tok )
return -1;
params = (uint32_t)strtoul(tok, NULL, 16);
if ( params == 0 )
return -1;
tok = strtok_r(NULL, "$", &saveptr);
if ( !tok )
return -1;
p = params & 0xff;
r = (params >> 8) & 0xff;
N = params >> 16;
if (N > SCRYPT_SAFE_N)
return -1;
N = (uint64_t)1 << N;
/* Useful debugging:
printf("We've obtained salt 'N' r p of '%s' %d %d %d\n", tok, N,r,p);
*/
memset(salt, 0, sizeof(salt)); /* Keeps splint happy */
retval = libscrypt_b64_decode(tok, (unsigned char*)salt, sizeof(salt));
if (retval < 1)
return -1;
retval = libscrypt_scrypt((uint8_t*)password, strlen(password), salt,
(uint32_t)retval, N, r, p, hashbuf, sizeof(hashbuf));
if (retval != 0)
return -1;
retval = libscrypt_b64_encode((unsigned char*)hashbuf, sizeof(hashbuf),
outbuf, sizeof(outbuf));
if (retval == 0)
return -1;
tok = strtok_r(NULL, "$", &saveptr);
if ( !tok )
return -1;
if(slow_equals(tok, outbuf) == 0)
return 0;
return 1; /* This is the "else" condition */
}
libscrypt-1.21/crypto_scrypt-hash.c 0000664 0000000 0000000 00000001661 12547452055 0017476 0 ustar 00root root 0000000 0000000 #include
#include
#include
#include
#include "b64.h"
#include "libscrypt.h"
int libscrypt_hash(char *dst, const char *passphrase, uint32_t N, uint8_t r,
uint8_t p)
{
int retval;
uint8_t salt[SCRYPT_SALT_LEN];
uint8_t hashbuf[SCRYPT_HASH_LEN];
char outbuf[256];
char saltbuf[256];
if(libscrypt_salt_gen(salt, SCRYPT_SALT_LEN) == -1)
{
return 0;
}
retval = libscrypt_scrypt((const uint8_t*)passphrase, strlen(passphrase),
(uint8_t*)salt, SCRYPT_SALT_LEN, N, r, p, hashbuf, sizeof(hashbuf));
if(retval == -1)
return 0;
retval = libscrypt_b64_encode((unsigned char*)hashbuf, sizeof(hashbuf),
outbuf, sizeof(outbuf));
if(retval == -1)
return 0;
retval = libscrypt_b64_encode((unsigned char *)salt, sizeof(salt),
saltbuf, sizeof(saltbuf));
if(retval == -1)
return 0;
retval = libscrypt_mcf(N, r, p, saltbuf, outbuf, dst);
if(retval != 1)
return 0;
return 1;
}
libscrypt-1.21/crypto_scrypt-hexconvert.c 0000664 0000000 0000000 00000001610 12547452055 0020732 0 ustar 00root root 0000000 0000000 #include
#include
#include
#include
/* The hexconvert function is only used to test reference vectors against
* known answers. The contents of this file are therefore a component
* to assist with test harnesses only
*/
int libscrypt_hexconvert(uint8_t *buf, size_t s, char *outbuf, size_t obs)
{
size_t i;
int len = 0;
if (!buf || s < 1 || obs < (s * 2 + 1))
return 0;
memset(outbuf, 0, obs);
for(i=0; i<=(s-1); i++)
{
/* snprintf(outbuf, s,"%s...", outbuf....) has undefined results
* and can't be used. Using offests like this makes snprintf
* nontrivial. we therefore have use inescure sprintf() and
* lengths checked elsewhere (start of function) */
/*@ -bufferoverflowhigh @*/
len += sprintf(outbuf+len, "%02x", (unsigned int) buf[i]);
}
return 1;
}
libscrypt-1.21/crypto_scrypt-hexconvert.h 0000664 0000000 0000000 00000000371 12547452055 0020742 0 ustar 00root root 0000000 0000000 #include
#include
/**
* Converts a binary string to a hex representation of that string
* outbuf must have size of at least buf * 2 + 1.
*/
int libscrypt_hexconvert(const uint8_t *buf, size_t s, char *outbuf,
size_t obs);
libscrypt-1.21/crypto_scrypt-nosse.c 0000664 0000000 0000000 00000021530 12547452055 0017677 0 ustar 00root root 0000000 0000000 /*-
* Copyright 2009 Colin Percival
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* This file was originally written by Colin Percival as part of the Tarsnap
* online backup system.
*/
#include
#ifndef _WIN32
#include
#endif
#include
#include
#include
#include
#include "sha256.h"
#include "sysendian.h"
#include "libscrypt.h"
static void blkcpy(void *, void *, size_t);
static void blkxor(void *, void *, size_t);
static void salsa20_8(uint32_t[16]);
static void blockmix_salsa8(uint32_t *, uint32_t *, uint32_t *, size_t);
static uint64_t integerify(void *, size_t);
static void smix(uint8_t *, size_t, uint64_t, uint32_t *, uint32_t *);
static void
blkcpy(void * dest, void * src, size_t len)
{
size_t * D = dest;
size_t * S = src;
size_t L = len / sizeof(size_t);
size_t i;
for (i = 0; i < L; i++)
D[i] = S[i];
}
static void
blkxor(void * dest, void * src, size_t len)
{
size_t * D = dest;
size_t * S = src;
size_t L = len / sizeof(size_t);
size_t i;
for (i = 0; i < L; i++)
D[i] ^= S[i];
}
/**
* salsa20_8(B):
* Apply the salsa20/8 core to the provided block.
*/
static void
salsa20_8(uint32_t B[16])
{
uint32_t x[16];
size_t i;
blkcpy(x, B, 64);
for (i = 0; i < 8; i += 2) {
#define R(a,b) (((a) << (b)) | ((a) >> (32 - (b))))
/* Operate on columns. */
x[ 4] ^= R(x[ 0]+x[12], 7); x[ 8] ^= R(x[ 4]+x[ 0], 9);
x[12] ^= R(x[ 8]+x[ 4],13); x[ 0] ^= R(x[12]+x[ 8],18);
x[ 9] ^= R(x[ 5]+x[ 1], 7); x[13] ^= R(x[ 9]+x[ 5], 9);
x[ 1] ^= R(x[13]+x[ 9],13); x[ 5] ^= R(x[ 1]+x[13],18);
x[14] ^= R(x[10]+x[ 6], 7); x[ 2] ^= R(x[14]+x[10], 9);
x[ 6] ^= R(x[ 2]+x[14],13); x[10] ^= R(x[ 6]+x[ 2],18);
x[ 3] ^= R(x[15]+x[11], 7); x[ 7] ^= R(x[ 3]+x[15], 9);
x[11] ^= R(x[ 7]+x[ 3],13); x[15] ^= R(x[11]+x[ 7],18);
/* Operate on rows. */
x[ 1] ^= R(x[ 0]+x[ 3], 7); x[ 2] ^= R(x[ 1]+x[ 0], 9);
x[ 3] ^= R(x[ 2]+x[ 1],13); x[ 0] ^= R(x[ 3]+x[ 2],18);
x[ 6] ^= R(x[ 5]+x[ 4], 7); x[ 7] ^= R(x[ 6]+x[ 5], 9);
x[ 4] ^= R(x[ 7]+x[ 6],13); x[ 5] ^= R(x[ 4]+x[ 7],18);
x[11] ^= R(x[10]+x[ 9], 7); x[ 8] ^= R(x[11]+x[10], 9);
x[ 9] ^= R(x[ 8]+x[11],13); x[10] ^= R(x[ 9]+x[ 8],18);
x[12] ^= R(x[15]+x[14], 7); x[13] ^= R(x[12]+x[15], 9);
x[14] ^= R(x[13]+x[12],13); x[15] ^= R(x[14]+x[13],18);
#undef R
}
for (i = 0; i < 16; i++)
B[i] += x[i];
}
/**
* blockmix_salsa8(Bin, Bout, X, r):
* Compute Bout = BlockMix_{salsa20/8, r}(Bin). The input Bin must be 128r
* bytes in length; the output Bout must also be the same size. The
* temporary space X must be 64 bytes.
*/
static void
blockmix_salsa8(uint32_t * Bin, uint32_t * Bout, uint32_t * X, size_t r)
{
size_t i;
/* 1: X <-- B_{2r - 1} */
blkcpy(X, &Bin[(2 * r - 1) * 16], 64);
/* 2: for i = 0 to 2r - 1 do */
for (i = 0; i < 2 * r; i += 2) {
/* 3: X <-- H(X \xor B_i) */
blkxor(X, &Bin[i * 16], 64);
salsa20_8(X);
/* 4: Y_i <-- X */
/* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
blkcpy(&Bout[i * 8], X, 64);
/* 3: X <-- H(X \xor B_i) */
blkxor(X, &Bin[i * 16 + 16], 64);
salsa20_8(X);
/* 4: Y_i <-- X */
/* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
blkcpy(&Bout[i * 8 + r * 16], X, 64);
}
}
/**
* integerify(B, r):
* Return the result of parsing B_{2r-1} as a little-endian integer.
*/
static uint64_t
integerify(void * B, size_t r)
{
uint32_t * X = (void *)((uintptr_t)(B) + (2 * r - 1) * 64);
return (((uint64_t)(X[1]) << 32) + X[0]);
}
/**
* smix(B, r, N, V, XY):
* Compute B = SMix_r(B, N). The input B must be 128r bytes in length;
* the temporary storage V must be 128rN bytes in length; the temporary
* storage XY must be 256r + 64 bytes in length. The value N must be a
* power of 2 greater than 1. The arrays B, V, and XY must be aligned to a
* multiple of 64 bytes.
*/
static void
smix(uint8_t * B, size_t r, uint64_t N, uint32_t * V, uint32_t * XY)
{
uint32_t * X = XY;
uint32_t * Y = &XY[32 * r];
uint32_t * Z = &XY[64 * r];
uint64_t i;
uint64_t j;
size_t k;
/* 1: X <-- B */
for (k = 0; k < 32 * r; k++)
X[k] = le32dec(&B[4 * k]);
/* 2: for i = 0 to N - 1 do */
for (i = 0; i < N; i += 2) {
/* 3: V_i <-- X */
blkcpy(&V[i * (32 * r)], X, 128 * r);
/* 4: X <-- H(X) */
blockmix_salsa8(X, Y, Z, r);
/* 3: V_i <-- X */
blkcpy(&V[(i + 1) * (32 * r)], Y, 128 * r);
/* 4: X <-- H(X) */
blockmix_salsa8(Y, X, Z, r);
}
/* 6: for i = 0 to N - 1 do */
for (i = 0; i < N; i += 2) {
/* 7: j <-- Integerify(X) mod N */
j = integerify(X, r) & (N - 1);
/* 8: X <-- H(X \xor V_j) */
blkxor(X, &V[j * (32 * r)], 128 * r);
blockmix_salsa8(X, Y, Z, r);
/* 7: j <-- Integerify(X) mod N */
j = integerify(Y, r) & (N - 1);
/* 8: X <-- H(X \xor V_j) */
blkxor(Y, &V[j * (32 * r)], 128 * r);
blockmix_salsa8(Y, X, Z, r);
}
/* 10: B' <-- X */
for (k = 0; k < 32 * r; k++)
le32enc(&B[4 * k], X[k]);
}
/**
* crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
* Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r,
* p, buflen) and write the result into buf. The parameters r, p, and buflen
* must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N
* must be a power of 2 greater than 1.
*
* Return 0 on success; or -1 on error
*/
int
libscrypt_scrypt(const uint8_t * passwd, size_t passwdlen,
const uint8_t * salt, size_t saltlen, uint64_t N, uint32_t r, uint32_t p,
uint8_t * buf, size_t buflen)
{
void * B0, * V0, * XY0;
uint8_t * B;
uint32_t * V;
uint32_t * XY;
uint32_t i;
/* Sanity-check parameters. */
#if SIZE_MAX > UINT32_MAX
if (buflen > (((uint64_t)(1) << 32) - 1) * 32) {
errno = EFBIG;
goto err0;
}
#endif
if ((uint64_t)(r) * (uint64_t)(p) >= (1 << 30)) {
errno = EFBIG;
goto err0;
}
if (r == 0 || p == 0) {
errno = EINVAL;
goto err0;
}
if (((N & (N - 1)) != 0) || (N < 2)) {
errno = EINVAL;
goto err0;
}
if ((r > SIZE_MAX / 128 / p) ||
#if SIZE_MAX / 256 <= UINT32_MAX
(r > SIZE_MAX / 256) ||
#endif
(N > SIZE_MAX / 128 / r)) {
errno = ENOMEM;
goto err0;
}
/* Allocate memory. */
#ifdef HAVE_POSIX_MEMALIGN
if ((errno = posix_memalign(&B0, 64, 128 * r * p)) != 0)
goto err0;
B = (uint8_t *)(B0);
if ((errno = posix_memalign(&XY0, 64, 256 * r + 64)) != 0)
goto err1;
XY = (uint32_t *)(XY0);
#ifndef MAP_ANON
if ((errno = posix_memalign(&V0, 64, 128 * r * N)) != 0)
goto err2;
V = (uint32_t *)(V0);
#endif
#else
if ((B0 = malloc(128 * r * p + 63)) == NULL)
goto err0;
B = (uint8_t *)(((uintptr_t)(B0) + 63) & ~ (uintptr_t)(63));
if ((XY0 = malloc(256 * r + 64 + 63)) == NULL)
goto err1;
XY = (uint32_t *)(((uintptr_t)(XY0) + 63) & ~ (uintptr_t)(63));
#ifndef MAP_ANON
if ((V0 = malloc(128 * r * N + 63)) == NULL)
goto err2;
V = (uint32_t *)(((uintptr_t)(V0) + 63) & ~ (uintptr_t)(63));
#endif
#endif
#ifdef MAP_ANON
if ((V0 = mmap(NULL, 128 * r * N, PROT_READ | PROT_WRITE,
#ifdef MAP_NOCORE
MAP_ANON | MAP_PRIVATE | MAP_NOCORE,
#else
MAP_ANON | MAP_PRIVATE,
#endif
-1, 0)) == MAP_FAILED)
goto err2;
V = (uint32_t *)(V0);
#endif
/* 1: (B_0 ... B_{p-1}) <-- PBKDF2(P, S, 1, p * MFLen) */
libscrypt_PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, 1, B, p * 128 * r);
/* 2: for i = 0 to p - 1 do */
for (i = 0; i < p; i++) {
/* 3: B_i <-- MF(B_i, N) */
smix(&B[i * 128 * r], r, N, V, XY);
}
/* 5: DK <-- PBKDF2(P, B, 1, dkLen) */
libscrypt_PBKDF2_SHA256(passwd, passwdlen, B, p * 128 * r, 1, buf, buflen);
/* Free memory. */
#ifdef MAP_ANON
if (munmap(V0, 128 * r * N))
goto err2;
#else
free(V0);
#endif
free(XY0);
free(B0);
/* Success! */
return (0);
err2:
free(XY0);
err1:
free(B0);
err0:
/* Failure! */
return (-1);
}
libscrypt-1.21/libscrypt.h 0000664 0000000 0000000 00000005007 12547452055 0015647 0 ustar 00root root 0000000 0000000 /*-
*/
#ifndef _CRYPTO_SCRYPT_H_
#define _CRYPTO_SCRYPT_H_
#include
#include
#ifdef __cplusplus
extern "C"{
#endif
/**
* crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
* Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r,
* p, buflen) and write the result into buf. The parameters r, p, and buflen
* must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N
* must be a power of 2 greater than 1.
*
* libscrypt_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
* password; duh
* N: CPU AND RAM cost (first modifier)
* r: RAM Cost
* p: CPU cost (parallelisation)
* In short, N is your main performance modifier. Values of r = 8, p = 1 are
* standard unless you want to modify the CPU/RAM ratio.
* Return 0 on success; or -1 on error.
*/
int libscrypt_scrypt(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t,
uint32_t, uint32_t, /*@out@*/ uint8_t *, size_t);
/* Converts a series of input parameters to a MCF form for storage */
int libscrypt_mcf(uint32_t N, uint32_t r, uint32_t p, const char *salt,
const char *hash, char *mcf);
#ifndef _MSC_VER
/* Generates a salt. Uses /dev/urandom/
*/
int libscrypt_salt_gen(/*@out@*/ uint8_t *rand, size_t len);
/* Creates a hash of a passphrase using a randomly generated salt */
/* Returns >0 on success, or 0 for fail */
int libscrypt_hash(char *dst, const char* passphrase, uint32_t N, uint8_t r,
uint8_t p);
#endif
/* Checks a given MCF against a password */
int libscrypt_check(char *mcf, const char *password);
#ifdef __cplusplus
}
#endif
/* Sane default values */
#define SCRYPT_HASH_LEN 64 /* This can be user defined -
*but 64 is the reference size
*/
#define SCRYPT_SAFE_N 30 /* This is much higher than you want. It's just
* a blocker for insane defines
*/
#define SCRYPT_SALT_LEN 16 /* This is just a recommended size */
/* Standard MCF is:
$s1 Identifier, three chars
$0e0810 Work order and separator, six chars
Formula for binary to base64 length = ceil(n/3)*4
$pcL+DWle903AXcKJVwMffA== Salt is 16 bytes, or 24 in Base64
$dn+9ujljVc5JTJMC2fYu1ZEHdJyqYkOurmcrBQbMHUfnD6qxbTmNiR075ohNBZjvp66E2aV1pfOrmyNHUefjMg== Hash is 64 bytes, or 88 in Base64.
Work order, salt and hash have separators (3)
3 + 6 + 24 + 88 + 3 + null byte = 25
This is rounded up to a multiple of four for alignment
*/
#define SCRYPT_MCF_LEN 128
#define SCRYPT_MCF_ID "$s1"
#define SCRYPT_N 16384
#define SCRYPT_r 8
#define SCRYPT_p 16
#endif /* !_CRYPTO_SCRYPT_H_ */
libscrypt-1.21/libscrypt.version 0000664 0000000 0000000 00000000175 12547452055 0017106 0 ustar 00root root 0000000 0000000 libscrypt {
global: libscrypt_check;
libscrypt_hash;
libscrypt_mcf;
libscrypt_salt_gen;
libscrypt_scrypt;
local: *;
};
libscrypt-1.21/main.c 0000664 0000000 0000000 00000016125 12547452055 0014556 0 ustar 00root root 0000000 0000000 #include
#include
#include
#include
#include "b64.h"
#include "crypto_scrypt-hexconvert.h"
#include "libscrypt.h"
#define REF1 "fdbabe1c9d3472007856e7190d01e9fe7c6ad7cbc8237830e77376634b3731622eaf30d92e22a3886ff109279d9830dac727afb94a83ee6d8360cbdfa2cc0640"
#define REF2 "7023bdcb3afd7348461c06cd81fd38ebfda8fbba904f8e3ea9b543f6545da1f2d5432955613f0fcf62d49705242a9af9e61e85dc0d651e40dfcf017b45575887"
int main()
{
uint8_t hashbuf[SCRYPT_HASH_LEN];
char outbuf[132];
char mcf[SCRYPT_MCF_LEN];
char mcf2[SCRYPT_MCF_LEN];
char saltbuf[64];
int retval;
/**
* libscrypt_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
* password; duh
* N: CPU AND RAM cost (first modifier)
* r: RAM Cost
* p: CPU cost (parallelisation)
* In short, N is your main performance modifier. Values of r = 8, p = 1 are
* standard unless you want to modify the CPU/RAM ratio.
int libscrypt_scrypt(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t,
uint32_t, uint32_t, uint8_t *, size_t);
*/
printf("TEST ONE: Direct call to reference function with password 'password' and salt 'NaCL'\n");
retval = libscrypt_scrypt((uint8_t*)"password",strlen("password"), (uint8_t*)"NaCl", strlen("NaCl"), 1024, 8, 16, hashbuf, sizeof(hashbuf));
if(retval != 0)
{
printf("TEST ONE FAILED: Failed to create hash of \"password\"\\n");
exit(EXIT_FAILURE);
}
printf("TEST ONE: SUCCESSFUL\n");
printf("TEST ONE and a half: Review errno on invalid input\n");
retval = libscrypt_scrypt((uint8_t*)"password",strlen("password"), (uint8_t*)"NaCl", strlen("NaCl"), 47, 1, 1, hashbuf, sizeof(hashbuf));
if(retval != -1)
{
printf("TEST ONE FAILED: Failed to detect invalid input\n");
exit(EXIT_FAILURE);
}
printf("TEST ONE and a half: Successfully failed on error: %s\n", strerror(errno));
/* Convert the binary string to hex representation. Outbuf must be
* at least sizeof(hashbuf) * 2 + 1
* Returns 0 on fail, 1 on success
*/
printf("TEST TWO: Convert binary output to hex\n");
retval = libscrypt_hexconvert(hashbuf, sizeof(hashbuf), outbuf, sizeof(outbuf));
if(!retval)
{
printf("TEST TWO: FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST TWO: SUCCESSFUL, Hex output is:\n%s\n", outbuf);
printf("TEST THREE: Compare hex output to reference hash output\n");
/* REF1 is a reference vector from Colin's implementation. */
if(strcmp(outbuf, REF1) != 0)
{
printf("TEST THREE: FAILED to match reference on hash\n");
exit(EXIT_FAILURE);
}
else
{
printf("TEST THREE: SUCCESSUL, Test vector matched!\n");
}
printf("TEST FOUR: Direct call to reference function with pleaseletmein password and SodiumChloride as salt\n");
/* Tests 4-6 repeat tests 1-3 with a different reference vector */
retval = libscrypt_scrypt((uint8_t*)"pleaseletmein",strlen("pleaseletmein"), (uint8_t*)"SodiumChloride", strlen("SodiumChloride"), 16384, 8, 1, hashbuf, sizeof(hashbuf));
if(retval != 0)
{
printf("TEST FOUR FAILED: Failed to create hash of 'pleaseletmein'\n");
exit(EXIT_FAILURE);
}
printf("TEST FOUR: SUCCESSFUL\n");
/* Convert the binary string to hex representation. Outbuf must be
* at least sizeof(hashbuf) * 2 + 1
*/
printf("TEST FIVE: Convert binary output to hex\n");
retval = libscrypt_hexconvert(hashbuf, sizeof(hashbuf), outbuf, sizeof(outbuf));
if(!retval)
{
printf("TEST FIVE: FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST FIVE: SUCCESSFUL, Hex output is:\n%s\n", outbuf);
printf("TEST SIX: Compare hex output to reference hash output\n");
if(strcmp(outbuf, REF2) != 0)
{
printf("TEST SIX: FAILED to match reference on hash\n");
exit(EXIT_FAILURE);
}
else
{
printf("TEST SIX: SUCCESSUL, Test vector matched!\n");
}
/* This function will convert the binary output to BASE64. Although
* we converted to hex for the reference vectors, BASE64 is more useful.
* Returns -1 on error, else returns length.
* Correct buffer length can be determined using the below function if
retuired.
* char* dest = (char*) malloc(modp_b64_encode_len);
* Note that this is not an exported function
*/
printf("TEST SEVEN: BASE64 encoding the salt and hash output\n");
retval = libscrypt_b64_encode(hashbuf, sizeof(hashbuf), outbuf, sizeof(outbuf));
if(retval == -1)
{
printf("TEST SEVEN FAILED\n");
exit(EXIT_FAILURE);
}
retval = libscrypt_b64_encode((unsigned char*)"SodiumChloride", strlen("SodiumChloride"), saltbuf, sizeof(saltbuf));
if(retval == -1)
{
printf("TEST SEVEN FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST SEVEN: SUCCESSFUL\n");
printf("TEST EIGHT: Create an MCF format output\n");
/* Creates a standard format output
* int crypto_scrypt_mcf(uint32_t N, uint32_t r, uint32_t p, char *salt, char *hash, char *mcf);
* Returns 0 on error, most likely reason is log2(N) not an integer.
*/
retval = libscrypt_mcf(16384, 8, 1, saltbuf, outbuf, mcf);
if(!retval)
{
printf("TEST EIGHT FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST EIGHT: SUCCESSFUL, calculated mcf\n%s\n", mcf);
/* Since later calls to scrypt_check() butcher mcf, make a second */
strcpy(mcf2, mcf);
/* Couldn't be simpler - for a given mcf, check is the password is valid
* Returns < 0 on failure to calculate hash
* 0 if password incorrect
* >1 if password correct
*/
printf("TEST NINE: Password verify on given MCF\n");
retval = libscrypt_check(mcf, "pleaseletmein");
if(retval < 0)
{
printf("TEST NINE: FAILED, hash failed to calculate\n");
exit(EXIT_FAILURE);
}
if(retval == 0)
{
printf("TEST NINE: FAILED, claimed pleaseletmein hash claimed did not verify\n");
exit(EXIT_FAILURE);
}
/* retval >0 is a success */
printf("TEST NINE: SUCCESSFUL, tested pleaseletmein password\n");
printf("TEST TEN: Password verify on same MCF, incorrect password\n");
retval = libscrypt_check(mcf2, "pleasefailme");
if(retval < 0)
{
printf("TEST TEN: FAILED, hash failed to calculate\n");
exit(EXIT_FAILURE);
}
if(retval > 0)
{
printf("TEST TEN: FAILED, fail hash has passed\n");
exit(EXIT_FAILURE);
}
printf("TEST TEN: SUCCESSFUL, refused incorrect password\n");
printf("TEST ELEVEN: Testing salt generator\n");
retval = libscrypt_salt_gen((uint8_t*)saltbuf, SCRYPT_SALT_LEN);
if(retval == -1)
{
printf("TEST ELEVEN (salt generate) FAILED\n");
exit(EXIT_FAILURE);
}
retval = libscrypt_b64_encode((uint8_t*)saltbuf, SCRYPT_SALT_LEN, outbuf, sizeof(outbuf));
if(retval == -1)
{
printf("TEST ELEVEN (b64 encode) FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST ELEVEN: SUCCESSFUL, Generated %s\n", outbuf);
printf("TEST TWELVE: Simple hash creation\n");
retval = libscrypt_hash(outbuf, "My cats's breath smells like cat food", SCRYPT_N, SCRYPT_r, SCRYPT_p);
if(!retval)
{
printf("TEST TWELVE: FAILED, Failed to create simple hash\n");
exit(EXIT_FAILURE);
}
printf("TEST TWELVE: SUCCESSFUL. Received the following from simple hash:\n%s\n", outbuf);
printf("TEST THIRTEEN: Verify test twelve's hash\n");
retval = libscrypt_check(outbuf, "My cats's breath smells like cat food");
if (retval != 1) {
printf("TEST THIRTEEN: FAILED, hash not verified\n");
exit(EXIT_FAILURE);
}
printf("TEST THIRTEEN: SUCCESSFUL\n");
return 0;
}
libscrypt-1.21/sha256.c 0000664 0000000 0000000 00000026114 12547452055 0014641 0 ustar 00root root 0000000 0000000 /*-
* Copyright 2005,2007,2009 Colin Percival
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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
#include
#include
#include "sysendian.h"
#include "sha256.h"
/*
* Encode a length len/4 vector of (uint32_t) into a length len vector of
* (unsigned char) in big-endian form. Assumes len is a multiple of 4.
*/
static void
be32enc_vect(unsigned char *dst, const uint32_t *src, size_t len)
{
size_t i;
for (i = 0; i < len / 4; i++)
be32enc(dst + i * 4, src[i]);
}
/*
* Decode a big-endian length len vector of (unsigned char) into a length
* len/4 vector of (uint32_t). Assumes len is a multiple of 4.
*/
static void
be32dec_vect(uint32_t *dst, const unsigned char *src, size_t len)
{
size_t i;
for (i = 0; i < len / 4; i++)
dst[i] = be32dec(src + i * 4);
}
/* Elementary functions used by SHA256 */
#define Ch(x, y, z) ((x & (y ^ z)) ^ z)
#define Maj(x, y, z) ((x & (y | z)) | (y & z))
#define SHR(x, n) (x >> n)
#define ROTR(x, n) ((x >> n) | (x << (32 - n)))
#define S0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
#define S1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
#define s0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3))
#define s1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10))
/* SHA256 round function */
#define RND(a, b, c, d, e, f, g, h, k) \
t0 = h + S1(e) + Ch(e, f, g) + k; \
t1 = S0(a) + Maj(a, b, c); \
d += t0; \
h = t0 + t1;
/* Adjusted round function for rotating state */
#define RNDr(S, W, i, k) \
RND(S[(64 - i) % 8], S[(65 - i) % 8], \
S[(66 - i) % 8], S[(67 - i) % 8], \
S[(68 - i) % 8], S[(69 - i) % 8], \
S[(70 - i) % 8], S[(71 - i) % 8], \
W[i] + k)
/*
* SHA256 block compression function. The 256-bit state is transformed via
* the 512-bit input block to produce a new state.
*/
static void
SHA256_Transform(uint32_t * state, const unsigned char block[64])
{
uint32_t W[64];
uint32_t S[8];
uint32_t t0, t1;
int i;
/* 1. Prepare message schedule W. */
be32dec_vect(W, block, 64);
for (i = 16; i < 64; i++)
W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16];
/* 2. Initialize working variables. */
memcpy(S, state, 32);
/* 3. Mix. */
RNDr(S, W, 0, 0x428a2f98);
RNDr(S, W, 1, 0x71374491);
RNDr(S, W, 2, 0xb5c0fbcf);
RNDr(S, W, 3, 0xe9b5dba5);
RNDr(S, W, 4, 0x3956c25b);
RNDr(S, W, 5, 0x59f111f1);
RNDr(S, W, 6, 0x923f82a4);
RNDr(S, W, 7, 0xab1c5ed5);
RNDr(S, W, 8, 0xd807aa98);
RNDr(S, W, 9, 0x12835b01);
RNDr(S, W, 10, 0x243185be);
RNDr(S, W, 11, 0x550c7dc3);
RNDr(S, W, 12, 0x72be5d74);
RNDr(S, W, 13, 0x80deb1fe);
RNDr(S, W, 14, 0x9bdc06a7);
RNDr(S, W, 15, 0xc19bf174);
RNDr(S, W, 16, 0xe49b69c1);
RNDr(S, W, 17, 0xefbe4786);
RNDr(S, W, 18, 0x0fc19dc6);
RNDr(S, W, 19, 0x240ca1cc);
RNDr(S, W, 20, 0x2de92c6f);
RNDr(S, W, 21, 0x4a7484aa);
RNDr(S, W, 22, 0x5cb0a9dc);
RNDr(S, W, 23, 0x76f988da);
RNDr(S, W, 24, 0x983e5152);
RNDr(S, W, 25, 0xa831c66d);
RNDr(S, W, 26, 0xb00327c8);
RNDr(S, W, 27, 0xbf597fc7);
RNDr(S, W, 28, 0xc6e00bf3);
RNDr(S, W, 29, 0xd5a79147);
RNDr(S, W, 30, 0x06ca6351);
RNDr(S, W, 31, 0x14292967);
RNDr(S, W, 32, 0x27b70a85);
RNDr(S, W, 33, 0x2e1b2138);
RNDr(S, W, 34, 0x4d2c6dfc);
RNDr(S, W, 35, 0x53380d13);
RNDr(S, W, 36, 0x650a7354);
RNDr(S, W, 37, 0x766a0abb);
RNDr(S, W, 38, 0x81c2c92e);
RNDr(S, W, 39, 0x92722c85);
RNDr(S, W, 40, 0xa2bfe8a1);
RNDr(S, W, 41, 0xa81a664b);
RNDr(S, W, 42, 0xc24b8b70);
RNDr(S, W, 43, 0xc76c51a3);
RNDr(S, W, 44, 0xd192e819);
RNDr(S, W, 45, 0xd6990624);
RNDr(S, W, 46, 0xf40e3585);
RNDr(S, W, 47, 0x106aa070);
RNDr(S, W, 48, 0x19a4c116);
RNDr(S, W, 49, 0x1e376c08);
RNDr(S, W, 50, 0x2748774c);
RNDr(S, W, 51, 0x34b0bcb5);
RNDr(S, W, 52, 0x391c0cb3);
RNDr(S, W, 53, 0x4ed8aa4a);
RNDr(S, W, 54, 0x5b9cca4f);
RNDr(S, W, 55, 0x682e6ff3);
RNDr(S, W, 56, 0x748f82ee);
RNDr(S, W, 57, 0x78a5636f);
RNDr(S, W, 58, 0x84c87814);
RNDr(S, W, 59, 0x8cc70208);
RNDr(S, W, 60, 0x90befffa);
RNDr(S, W, 61, 0xa4506ceb);
RNDr(S, W, 62, 0xbef9a3f7);
RNDr(S, W, 63, 0xc67178f2);
/* 4. Mix local working variables into global state */
for (i = 0; i < 8; i++)
state[i] += S[i];
/* Clean the stack. */
memset(W, 0, 256);
memset(S, 0, 32);
t0 = t1 = 0;
}
static unsigned char PAD[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
/* Add padding and terminating bit-count. */
static void
SHA256_Pad(SHA256_CTX * ctx)
{
unsigned char len[8];
uint32_t r, plen;
/*
* Convert length to a vector of bytes -- we do this now rather
* than later because the length will change after we pad.
*/
be32enc_vect(len, ctx->count, 8);
/* Add 1--64 bytes so that the resulting length is 56 mod 64 */
r = (ctx->count[1] >> 3) & 0x3f;
plen = (r < 56) ? (56 - r) : (120 - r);
libscrypt_SHA256_Update(ctx, PAD, (size_t)plen);
/* Add the terminating bit-count */
libscrypt_SHA256_Update(ctx, len, 8);
}
/* SHA-256 initialization. Begins a SHA-256 operation. */
void
libscrypt_SHA256_Init(SHA256_CTX * ctx)
{
/* Zero bits processed so far */
ctx->count[0] = ctx->count[1] = 0;
/* Magic initialization constants */
ctx->state[0] = 0x6A09E667;
ctx->state[1] = 0xBB67AE85;
ctx->state[2] = 0x3C6EF372;
ctx->state[3] = 0xA54FF53A;
ctx->state[4] = 0x510E527F;
ctx->state[5] = 0x9B05688C;
ctx->state[6] = 0x1F83D9AB;
ctx->state[7] = 0x5BE0CD19;
}
/* Add bytes into the hash */
void
libscrypt_SHA256_Update(SHA256_CTX * ctx, const void *in, size_t len)
{
uint32_t bitlen[2];
uint32_t r;
const unsigned char *src = in;
/* Number of bytes left in the buffer from previous updates */
r = (ctx->count[1] >> 3) & 0x3f;
/* Convert the length into a number of bits */
bitlen[1] = ((uint32_t)len) << 3;
bitlen[0] = (uint32_t)(len >> 29);
/* Update number of bits */
if ((ctx->count[1] += bitlen[1]) < bitlen[1])
ctx->count[0]++;
ctx->count[0] += bitlen[0];
/* Handle the case where we don't need to perform any transforms */
if (len < 64 - r) {
memcpy(&ctx->buf[r], src, len);
return;
}
/* Finish the current block */
memcpy(&ctx->buf[r], src, 64 - r);
SHA256_Transform(ctx->state, ctx->buf);
src += 64 - r;
len -= 64 - r;
/* Perform complete blocks */
while (len >= 64) {
SHA256_Transform(ctx->state, src);
src += 64;
len -= 64;
}
/* Copy left over data into buffer */
memcpy(ctx->buf, src, len);
}
/*
* SHA-256 finalization. Pads the input data, exports the hash value,
* and clears the context state.
*/
void
libscrypt_SHA256_Final(unsigned char digest[32], SHA256_CTX * ctx)
{
/* Add padding */
SHA256_Pad(ctx);
/* Write the hash */
be32enc_vect(digest, ctx->state, 32);
/* Clear the context state */
memset((void *)ctx, 0, sizeof(*ctx));
}
/* Initialize an HMAC-SHA256 operation with the given key. */
void
libscrypt_HMAC_SHA256_Init(HMAC_SHA256_CTX * ctx, const void * _K, size_t Klen)
{
unsigned char pad[64];
unsigned char khash[32];
const unsigned char * K = _K;
size_t i;
/* If Klen > 64, the key is really SHA256(K). */
if (Klen > 64) {
libscrypt_SHA256_Init(&ctx->ictx);
libscrypt_SHA256_Update(&ctx->ictx, K, Klen);
libscrypt_SHA256_Final(khash, &ctx->ictx);
K = khash;
Klen = 32;
}
/* Inner SHA256 operation is SHA256(K xor [block of 0x36] || data). */
libscrypt_SHA256_Init(&ctx->ictx);
memset(pad, 0x36, 64);
for (i = 0; i < Klen; i++)
pad[i] ^= K[i];
libscrypt_SHA256_Update(&ctx->ictx, pad, 64);
/* Outer SHA256 operation is SHA256(K xor [block of 0x5c] || hash). */
libscrypt_SHA256_Init(&ctx->octx);
memset(pad, 0x5c, 64);
for (i = 0; i < Klen; i++)
pad[i] ^= K[i];
libscrypt_SHA256_Update(&ctx->octx, pad, 64);
/* Clean the stack. */
memset(khash, 0, 32);
}
/* Add bytes to the HMAC-SHA256 operation. */
void
libscrypt_HMAC_SHA256_Update(HMAC_SHA256_CTX * ctx, const void *in, size_t len)
{
/* Feed data to the inner SHA256 operation. */
libscrypt_SHA256_Update(&ctx->ictx, in, len);
}
/* Finish an HMAC-SHA256 operation. */
void
libscrypt_HMAC_SHA256_Final(unsigned char digest[32], HMAC_SHA256_CTX * ctx)
{
unsigned char ihash[32];
/* Finish the inner SHA256 operation. */
libscrypt_SHA256_Final(ihash, &ctx->ictx);
/* Feed the inner hash to the outer SHA256 operation. */
libscrypt_SHA256_Update(&ctx->octx, ihash, 32);
/* Finish the outer SHA256 operation. */
libscrypt_SHA256_Final(digest, &ctx->octx);
/* Clean the stack. */
memset(ihash, 0, 32);
}
/**
* PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen):
* Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and
* write the output to buf. The value dkLen must be at most 32 * (2^32 - 1).
*/
void
libscrypt_PBKDF2_SHA256(const uint8_t * passwd, size_t passwdlen, const uint8_t * salt,
size_t saltlen, uint64_t c, uint8_t * buf, size_t dkLen)
{
HMAC_SHA256_CTX PShctx, hctx;
size_t i;
uint8_t ivec[4];
uint8_t U[32];
uint8_t T[32];
uint64_t j;
int k;
size_t clen;
/* Compute HMAC state after processing P and S. */
libscrypt_HMAC_SHA256_Init(&PShctx, passwd, passwdlen);
libscrypt_HMAC_SHA256_Update(&PShctx, salt, saltlen);
/* Iterate through the blocks. */
for (i = 0; i * 32 < dkLen; i++) {
/* Generate INT(i + 1). */
be32enc(ivec, (uint32_t)(i + 1));
/* Compute U_1 = PRF(P, S || INT(i)). */
memcpy(&hctx, &PShctx, sizeof(HMAC_SHA256_CTX));
libscrypt_HMAC_SHA256_Update(&hctx, ivec, 4);
libscrypt_HMAC_SHA256_Final(U, &hctx);
/* T_i = U_1 ... */
memcpy(T, U, 32);
for (j = 2; j <= c; j++) {
/* Compute U_j. */
libscrypt_HMAC_SHA256_Init(&hctx, passwd, passwdlen);
libscrypt_HMAC_SHA256_Update(&hctx, U, 32);
libscrypt_HMAC_SHA256_Final(U, &hctx);
/* ... xor U_j ... */
for (k = 0; k < 32; k++)
T[k] ^= U[k];
}
/* Copy as many bytes as necessary into buf. */
clen = dkLen - i * 32;
if (clen > 32)
clen = 32;
memcpy(&buf[i * 32], T, clen);
}
/* Clean PShctx, since we never called _Final on it. */
memset(&PShctx, 0, sizeof(HMAC_SHA256_CTX));
}
libscrypt-1.21/sha256.h 0000664 0000000 0000000 00000005226 12547452055 0014647 0 ustar 00root root 0000000 0000000 /*-
* Copyright 2005,2007,2009 Colin Percival
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD: src/lib/libmd/sha256.h,v 1.2 2006/01/17 15:35:56 phk Exp $
*/
#ifndef _SHA256_H_
#define _SHA256_H_
#include
#include
typedef struct libscrypt_SHA256Context {
uint32_t state[8];
uint32_t count[2];
unsigned char buf[64];
} SHA256_CTX;
typedef struct libscrypt_HMAC_SHA256Context {
SHA256_CTX ictx;
SHA256_CTX octx;
} HMAC_SHA256_CTX;
void libscrypt_SHA256_Init(/*@out@*/ SHA256_CTX *);
void libscrypt_SHA256_Update(SHA256_CTX *, const void *, size_t);
/* Original declaration:
* void SHA256_Final(unsigned char [32], SHA256_CTX *);
*/
void libscrypt_SHA256_Final(/*@out@*/ unsigned char [], SHA256_CTX *);
void libscrypt_HMAC_SHA256_Init(HMAC_SHA256_CTX *, const void *, size_t);
void libscrypt_HMAC_SHA256_Update(HMAC_SHA256_CTX *, const void *, size_t);
/* Original declaration:
* void HMAC_SHA256_Final(unsigned char [32], HMAC_SHA256_CTX *);
*/
void libscrypt_HMAC_SHA256_Final(unsigned char [], HMAC_SHA256_CTX *);
/**
* PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen):
* Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and
* write the output to buf. The value dkLen must be at most 32 * (2^32 - 1).
*/
void libscrypt_PBKDF2_SHA256(const uint8_t *, size_t, const uint8_t *, size_t,
uint64_t, uint8_t *, size_t);
#endif /* !_SHA256_H_ */
libscrypt-1.21/slowequals.c 0000664 0000000 0000000 00000000713 12547452055 0016025 0 ustar 00root root 0000000 0000000 #include
/* Implements a constant time version of strcmp()
* Will return 1 if a and b are equal, 0 if they are not */
int slow_equals(const char* a, const char* b)
{
size_t lena, lenb, diff, i;
lena = strlen(a);
lenb = strlen(b);
diff = strlen(a) ^ strlen(b);
for(i=0; i we have isn't usable. */
#if !HAVE_DECL_BE64ENC
#undef HAVE_SYS_ENDIAN_H
#endif
#ifdef HAVE_SYS_ENDIAN_H
#include
#else
#include
#ifdef _MSC_VER
#define INLINE __inline
#else
#define INLINE inline
#endif
static INLINE uint32_t
be32dec(const void *pp)
{
const uint8_t *p = (uint8_t const *)pp;
return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) +
((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24));
}
static INLINE void
be32enc(void *pp, uint32_t x)
{
uint8_t * p = (uint8_t *)pp;
p[3] = x & 0xff;
p[2] = (x >> 8) & 0xff;
p[1] = (x >> 16) & 0xff;
p[0] = (x >> 24) & 0xff;
}
static INLINE uint64_t
be64dec(const void *pp)
{
const uint8_t *p = (uint8_t const *)pp;
return ((uint64_t)(p[7]) + ((uint64_t)(p[6]) << 8) +
((uint64_t)(p[5]) << 16) + ((uint64_t)(p[4]) << 24) +
((uint64_t)(p[3]) << 32) + ((uint64_t)(p[2]) << 40) +
((uint64_t)(p[1]) << 48) + ((uint64_t)(p[0]) << 56));
}
static INLINE void
be64enc(void *pp, uint64_t x)
{
uint8_t * p = (uint8_t *)pp;
p[7] = x & 0xff;
p[6] = (x >> 8) & 0xff;
p[5] = (x >> 16) & 0xff;
p[4] = (x >> 24) & 0xff;
p[3] = (x >> 32) & 0xff;
p[2] = (x >> 40) & 0xff;
p[1] = (x >> 48) & 0xff;
p[0] = (x >> 56) & 0xff;
}
static INLINE uint32_t
le32dec(const void *pp)
{
const uint8_t *p = (uint8_t const *)pp;
return ((uint32_t)(p[0]) + ((uint32_t)(p[1]) << 8) +
((uint32_t)(p[2]) << 16) + ((uint32_t)(p[3]) << 24));
}
static INLINE void
le32enc(void *pp, uint32_t x)
{
uint8_t * p = (uint8_t *)pp;
p[0] = x & 0xff;
p[1] = (x >> 8) & 0xff;
p[2] = (x >> 16) & 0xff;
p[3] = (x >> 24) & 0xff;
}
static INLINE uint64_t
le64dec(const void *pp)
{
const uint8_t *p = (uint8_t const *)pp;
return ((uint64_t)(p[0]) + ((uint64_t)(p[1]) << 8) +
((uint64_t)(p[2]) << 16) + ((uint64_t)(p[3]) << 24) +
((uint64_t)(p[4]) << 32) + ((uint64_t)(p[5]) << 40) +
((uint64_t)(p[6]) << 48) + ((uint64_t)(p[7]) << 56));
}
static INLINE void
le64enc(void *pp, uint64_t x)
{
uint8_t * p = (uint8_t *)pp;
p[0] = x & 0xff;
p[1] = (x >> 8) & 0xff;
p[2] = (x >> 16) & 0xff;
p[3] = (x >> 24) & 0xff;
p[4] = (x >> 32) & 0xff;
p[5] = (x >> 40) & 0xff;
p[6] = (x >> 48) & 0xff;
p[7] = (x >> 56) & 0xff;
}
#endif /* !HAVE_SYS_ENDIAN_H */
#endif /* !_SYSENDIAN_H_ */