396 lines
15 KiB
C
396 lines
15 KiB
C
/**
|
|
* @file sha256.c
|
|
* @version $Format:%h%d$
|
|
*
|
|
* SHA256 hash implementation.
|
|
*/
|
|
/*
|
|
* Copyright (c) 2013-2018 Rambus Inc.
|
|
* Copyright (c) PeerSec Networks, 2002-2011
|
|
* All Rights Reserved
|
|
*
|
|
* The latest version of this code is available at http://www.matrixssl.org
|
|
*
|
|
* This software is open source; 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This General Public License does NOT permit incorporating this software
|
|
* into proprietary programs. If you are unable to comply with the GPL, a
|
|
* commercial license for this software may be purchased from Rambus at
|
|
* http://www.rambus.com/
|
|
*
|
|
* This program is distributed in 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*/
|
|
/******************************************************************************/
|
|
|
|
#include "../cryptoImpl.h"
|
|
|
|
typedef struct
|
|
{
|
|
# ifdef HAVE_NATIVE_INT64
|
|
uint64 length;
|
|
# else
|
|
uint32 lengthHi;
|
|
uint32 lengthLo;
|
|
# endif /* HAVE_NATIVE_INT64 */
|
|
uint32 state[8], curlen;
|
|
unsigned char buf[64];
|
|
} psSha256Standalone_t;
|
|
|
|
/******************************************************************************/
|
|
|
|
# ifndef PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE
|
|
|
|
/* The K array */
|
|
static const uint32_t K[64] = {
|
|
0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
|
|
0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
|
|
0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
|
|
0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
|
|
0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
|
|
0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
|
|
0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
|
|
0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
|
|
0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
|
|
0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
|
|
0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
|
|
0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
|
|
0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
|
|
};
|
|
# endif /* PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE */
|
|
|
|
/* Various logical functions */
|
|
# define Ch(x, y, z) (z ^ (x & (y ^ z)))
|
|
# define Maj(x, y, z) (((x | y) & z) | (x & y))
|
|
# define S(x, n) ROR((x), (n))
|
|
# define R(x, n) (((x) & 0xFFFFFFFFUL) >> (n))
|
|
# define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22))
|
|
# define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25))
|
|
# define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3))
|
|
# define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10))
|
|
|
|
/*
|
|
compress 512-bits
|
|
*/
|
|
# ifdef USE_BURN_STACK
|
|
static void _sha256_compress(psSha256Standalone_t *sha256, const unsigned char *buf)
|
|
# else
|
|
static void sha256_compress(psSha256Standalone_t *sha256, const unsigned char *buf)
|
|
# endif /* CLEAN_STACK */
|
|
{
|
|
|
|
uint32 S[8], W[64], t0, t1;
|
|
# ifndef PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE
|
|
uint32 t;
|
|
# endif /* PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE */
|
|
int32 i;
|
|
|
|
/* copy state into S */
|
|
for (i = 0; i < 8; i++)
|
|
{
|
|
S[i] = sha256->state[i];
|
|
}
|
|
|
|
/* copy the state into 512-bits into W[0..15] */
|
|
for (i = 0; i < 16; i++)
|
|
{
|
|
LOAD32H(W[i], buf + (4 * i));
|
|
}
|
|
|
|
/* fill W[16..63] */
|
|
for (i = 16; i < 64; i++)
|
|
{
|
|
W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
|
|
}
|
|
|
|
/* Compress */
|
|
# ifndef PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE
|
|
# define RND(a, b, c, d, e, f, g, h, i) \
|
|
t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
|
|
t1 = Sigma0(a) + Maj(a, b, c); \
|
|
d += t0; \
|
|
h = t0 + t1;
|
|
|
|
for (i = 0; i < 64; ++i)
|
|
{
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], i);
|
|
t = S[7]; S[7] = S[6]; S[6] = S[5]; S[5] = S[4];
|
|
S[4] = S[3]; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t;
|
|
}
|
|
# else /* PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE */
|
|
# define RND(a, b, c, d, e, f, g, h, i, ki) \
|
|
t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
|
|
t1 = Sigma0(a) + Maj(a, b, c); \
|
|
d += t0; \
|
|
h = t0 + t1;
|
|
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 0, 0x428a2f98);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 1, 0x71374491);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 2, 0xb5c0fbcf);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 3, 0xe9b5dba5);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 4, 0x3956c25b);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 5, 0x59f111f1);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 6, 0x923f82a4);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 7, 0xab1c5ed5);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 8, 0xd807aa98);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 9, 0x12835b01);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 10, 0x243185be);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 11, 0x550c7dc3);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 12, 0x72be5d74);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 13, 0x80deb1fe);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 14, 0x9bdc06a7);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 15, 0xc19bf174);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 16, 0xe49b69c1);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 17, 0xefbe4786);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 18, 0x0fc19dc6);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 19, 0x240ca1cc);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 20, 0x2de92c6f);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 21, 0x4a7484aa);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 22, 0x5cb0a9dc);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 23, 0x76f988da);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 24, 0x983e5152);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 25, 0xa831c66d);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 26, 0xb00327c8);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 27, 0xbf597fc7);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 28, 0xc6e00bf3);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 29, 0xd5a79147);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 30, 0x06ca6351);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 31, 0x14292967);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 32, 0x27b70a85);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 33, 0x2e1b2138);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 34, 0x4d2c6dfc);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 35, 0x53380d13);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 36, 0x650a7354);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 37, 0x766a0abb);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 38, 0x81c2c92e);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 39, 0x92722c85);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 40, 0xa2bfe8a1);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 41, 0xa81a664b);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 42, 0xc24b8b70);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 43, 0xc76c51a3);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 44, 0xd192e819);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 45, 0xd6990624);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 46, 0xf40e3585);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 47, 0x106aa070);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 48, 0x19a4c116);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 49, 0x1e376c08);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 50, 0x2748774c);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 51, 0x34b0bcb5);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 52, 0x391c0cb3);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 53, 0x4ed8aa4a);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 54, 0x5b9cca4f);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 55, 0x682e6ff3);
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], 56, 0x748f82ee);
|
|
RND(S[7], S[0], S[1], S[2], S[3], S[4], S[5], S[6], 57, 0x78a5636f);
|
|
RND(S[6], S[7], S[0], S[1], S[2], S[3], S[4], S[5], 58, 0x84c87814);
|
|
RND(S[5], S[6], S[7], S[0], S[1], S[2], S[3], S[4], 59, 0x8cc70208);
|
|
RND(S[4], S[5], S[6], S[7], S[0], S[1], S[2], S[3], 60, 0x90befffa);
|
|
RND(S[3], S[4], S[5], S[6], S[7], S[0], S[1], S[2], 61, 0xa4506ceb);
|
|
RND(S[2], S[3], S[4], S[5], S[6], S[7], S[0], S[1], 62, 0xbef9a3f7);
|
|
RND(S[1], S[2], S[3], S[4], S[5], S[6], S[7], S[0], 63, 0xc67178f2);
|
|
|
|
# undef RND
|
|
|
|
# endif /* PS_SHA256_IMPROVE_PERF_INCREASE_CODESIZE */
|
|
|
|
/* feedback */
|
|
for (i = 0; i < 8; i++)
|
|
{
|
|
sha256->state[i] = sha256->state[i] + S[i];
|
|
}
|
|
|
|
}
|
|
|
|
# ifdef USE_BURN_STACK
|
|
static void sha256_compress(psSha256Standalone_t *sha256,
|
|
const unsigned char *buf)
|
|
{
|
|
_sha256_compress(sha256, buf);
|
|
psBurnStack(sizeof(uint32) * 74);
|
|
}
|
|
# endif /* USE_BURN_STACK */
|
|
|
|
/******************************************************************************/
|
|
|
|
static int32_t psSha256StandaloneInit(psSha256Standalone_t *sha256)
|
|
{
|
|
# ifdef CRYPTO_ASSERT
|
|
psAssert(sha256 != NULL);
|
|
# endif
|
|
sha256->curlen = 0;
|
|
sha256->state[0] = 0x6A09E667UL;
|
|
sha256->state[1] = 0xBB67AE85UL;
|
|
sha256->state[2] = 0x3C6EF372UL;
|
|
sha256->state[3] = 0xA54FF53AUL;
|
|
sha256->state[4] = 0x510E527FUL;
|
|
sha256->state[5] = 0x9B05688CUL;
|
|
sha256->state[6] = 0x1F83D9ABUL;
|
|
sha256->state[7] = 0x5BE0CD19UL;
|
|
# ifdef HAVE_NATIVE_INT64
|
|
sha256->length = 0;
|
|
# else
|
|
sha256->lengthHi = 0;
|
|
sha256->lengthLo = 0;
|
|
# endif /* HAVE_NATIVE_INT64 */
|
|
return PS_SUCCESS;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static void psSha256StandaloneUpdate(psSha256Standalone_t *sha256,
|
|
const unsigned char *buf, uint32_t len)
|
|
{
|
|
uint32 n;
|
|
|
|
# ifdef CRYPTO_ASSERT
|
|
psAssert(sha256 != NULL);
|
|
psAssert(buf != NULL);
|
|
# endif
|
|
|
|
while (len > 0)
|
|
{
|
|
if (sha256->curlen == 0 && len >= 64)
|
|
{
|
|
sha256_compress(sha256, (unsigned char *) buf);
|
|
# ifdef HAVE_NATIVE_INT64
|
|
sha256->length += 512;
|
|
# else
|
|
n = (sha256->lengthLo + 512) & 0xFFFFFFFFL;
|
|
if (n < sha256->lengthLo)
|
|
{
|
|
sha256->lengthHi++;
|
|
}
|
|
sha256->lengthLo = n;
|
|
# endif /* HAVE_NATIVE_INT64 */
|
|
buf += 64;
|
|
len -= 64;
|
|
}
|
|
else
|
|
{
|
|
n = min(len, (64 - sha256->curlen));
|
|
Memcpy(sha256->buf + sha256->curlen, buf, (size_t) n);
|
|
sha256->curlen += n;
|
|
buf += n;
|
|
len -= n;
|
|
|
|
if (sha256->curlen == 64)
|
|
{
|
|
sha256_compress(sha256, sha256->buf);
|
|
# ifdef HAVE_NATIVE_INT64
|
|
sha256->length += 512;
|
|
# else
|
|
n = (sha256->lengthLo + 512) & 0xFFFFFFFFL;
|
|
if (n < sha256->lengthLo)
|
|
{
|
|
sha256->lengthHi++;
|
|
}
|
|
sha256->lengthLo = n;
|
|
# endif /* HAVE_NATIVE_INT64 */
|
|
sha256->curlen = 0;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static void psSha256StandaloneFinal(psSha256Standalone_t *sha256,
|
|
unsigned char hash[SHA256_HASHLEN])
|
|
{
|
|
int32 i;
|
|
|
|
# ifndef HAVE_NATIVE_INT64
|
|
uint32 n;
|
|
# endif
|
|
|
|
# ifdef CRYPTO_ASSERT
|
|
psAssert(sha256 != NULL);
|
|
psAssert(hash != NULL);
|
|
if (sha256->curlen >= sizeof(sha256->buf))
|
|
{
|
|
psTraceCrypto("psSha256StandaloneFinal error\n");
|
|
return;
|
|
}
|
|
# endif
|
|
|
|
/* increase the length of the message */
|
|
# ifdef HAVE_NATIVE_INT64
|
|
sha256->length += sha256->curlen << 3;
|
|
# else
|
|
n = (sha256->lengthLo + (sha256->curlen << 3)) & 0xFFFFFFFFL;
|
|
if (n < sha256->lengthLo)
|
|
{
|
|
sha256->lengthHi++;
|
|
}
|
|
sha256->lengthHi += (sha256->curlen >> 29);
|
|
sha256->lengthLo = n;
|
|
# endif /* HAVE_NATIVE_INT64 */
|
|
|
|
/* append the '1' bit */
|
|
sha256->buf[sha256->curlen++] = (unsigned char) 0x80;
|
|
|
|
/*
|
|
if the length is currently above 56 bytes we append zeros then compress.
|
|
Then we can fall back to padding zeros and length encoding like normal.
|
|
*/
|
|
if (sha256->curlen > 56)
|
|
{
|
|
while (sha256->curlen < 64)
|
|
{
|
|
sha256->buf[sha256->curlen++] = (unsigned char) 0;
|
|
}
|
|
sha256_compress(sha256, sha256->buf);
|
|
sha256->curlen = 0;
|
|
}
|
|
/* pad upto 56 bytes of zeroes */
|
|
while (sha256->curlen < 56)
|
|
{
|
|
sha256->buf[sha256->curlen++] = (unsigned char) 0;
|
|
}
|
|
|
|
/* store length */
|
|
# ifdef HAVE_NATIVE_INT64
|
|
STORE64H(sha256->length, sha256->buf + 56);
|
|
# else
|
|
STORE32H(sha256->lengthHi, sha256->buf + 56);
|
|
STORE32H(sha256->lengthLo, sha256->buf + 60);
|
|
# endif /* HAVE_NATIVE_INT64 */
|
|
sha256_compress(sha256, sha256->buf);
|
|
|
|
/* copy output */
|
|
for (i = 0; i < 8; i++)
|
|
{
|
|
STORE32H(sha256->state[i], hash + (4 * i));
|
|
}
|
|
Memset(sha256, 0x0, sizeof(psSha256Standalone_t));
|
|
}
|
|
|
|
/* Compute SHA-256 hash of variable length input data. */
|
|
void psSha256Standalone(const void *data,
|
|
uint32_t len,
|
|
unsigned char hash[SHA256_HASHLEN])
|
|
{
|
|
psSha256Standalone_t sha256_context;
|
|
|
|
(void)psSha256StandaloneInit(&sha256_context);
|
|
psSha256StandaloneUpdate(&sha256_context, data, len);
|
|
psSha256StandaloneFinal(&sha256_context, hash);
|
|
|
|
#ifdef USE_BURN_STACK
|
|
psBurnStack(sizeof(sha256_context) * 2);
|
|
#endif
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|