mirror of
https://github.com/sheumann/hush.git
synced 2024-08-21 11:28:57 +00:00
sha: merge K[] for sha256 and 512
function old new delta sha_K - 640 +640 sha256_process_block64 440 425 -15 sha512_process_block128 1336 1283 -53 K512_lo 320 - -320 K256 320 - -320 ------------------------------------------------------------------------------ (add/remove: 1/2 grow/shrink: 0/2 up/down: 640/-708) Total: -68 bytes
This commit is contained in:
Denis Vlasenko
parent
8ec8d5e3db
commit
823f10b8f0
221
libbb/sha1.c
221
libbb/sha1.c
@ -53,24 +53,20 @@ static inline uint64_t hton64(uint64_t v)
|
||||
#endif
|
||||
|
||||
|
||||
#define SHA1_BLOCK_SIZE 64
|
||||
#define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
|
||||
|
||||
static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
|
||||
{
|
||||
unsigned i;
|
||||
uint32_t w[80], a, b, c, d, e, t;
|
||||
uint32_t *words;
|
||||
unsigned t;
|
||||
uint32_t W[80], a, b, c, d, e;
|
||||
const uint32_t *words = (uint32_t*) ctx->wbuffer;
|
||||
|
||||
words = (uint32_t*) ctx->wbuffer;
|
||||
for (i = 0; i < SHA1_BLOCK_SIZE / 4; ++i) {
|
||||
w[i] = ntohl(*words);
|
||||
for (t = 0; t < 16; ++t) {
|
||||
W[t] = ntohl(*words);
|
||||
words++;
|
||||
}
|
||||
|
||||
for (/*i = SHA1_BLOCK_SIZE / 4*/; i < 80; ++i) {
|
||||
t = w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16];
|
||||
w[i] = rotl32(t, 1);
|
||||
for (/*t = 16*/; t < 80; ++t) {
|
||||
uint32_t T = W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16];
|
||||
W[t] = rotl32(T, 1);
|
||||
}
|
||||
|
||||
a = ctx->hash[0];
|
||||
@ -87,20 +83,24 @@ static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
|
||||
/* partial loop unrolling and is optimised for the Pentium 4 */
|
||||
#define rnd(f,k) \
|
||||
do { \
|
||||
t = a; a = rotl32(a,5) + f(b,c,d) + e + k + w[i]; \
|
||||
e = d; d = c; c = rotl32(b, 30); b = t; \
|
||||
uint32_t T = a; \
|
||||
a = rotl32(a, 5) + f(b, c, d) + e + k + W[t]; \
|
||||
e = d; \
|
||||
d = c; \
|
||||
c = rotl32(b, 30); \
|
||||
b = T; \
|
||||
} while (0)
|
||||
|
||||
for (i = 0; i < 20; ++i)
|
||||
for (t = 0; t < 20; ++t)
|
||||
rnd(ch, 0x5a827999);
|
||||
|
||||
for (/*i = 20*/; i < 40; ++i)
|
||||
for (/*t = 20*/; t < 40; ++t)
|
||||
rnd(parity, 0x6ed9eba1);
|
||||
|
||||
for (/*i = 40*/; i < 60; ++i)
|
||||
for (/*t = 40*/; t < 60; ++t)
|
||||
rnd(maj, 0x8f1bbcdc);
|
||||
|
||||
for (/*i = 60*/; i < 80; ++i)
|
||||
for (/*t = 60*/; t < 80; ++t)
|
||||
rnd(parity, 0xca62c1d6);
|
||||
#undef ch
|
||||
#undef parity
|
||||
@ -114,107 +114,58 @@ static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
|
||||
ctx->hash[4] += e;
|
||||
}
|
||||
|
||||
/* Constants for SHA256 from FIPS 180-2:4.2.2. */
|
||||
static const uint32_t K256[80] = {
|
||||
0x428a2f98, 0x71374491,
|
||||
0xb5c0fbcf, 0xe9b5dba5,
|
||||
0x3956c25b, 0x59f111f1,
|
||||
0x923f82a4, 0xab1c5ed5,
|
||||
0xd807aa98, 0x12835b01,
|
||||
0x243185be, 0x550c7dc3,
|
||||
0x72be5d74, 0x80deb1fe,
|
||||
0x9bdc06a7, 0xc19bf174,
|
||||
0xe49b69c1, 0xefbe4786,
|
||||
0x0fc19dc6, 0x240ca1cc,
|
||||
0x2de92c6f, 0x4a7484aa,
|
||||
0x5cb0a9dc, 0x76f988da,
|
||||
0x983e5152, 0xa831c66d,
|
||||
0xb00327c8, 0xbf597fc7,
|
||||
0xc6e00bf3, 0xd5a79147,
|
||||
0x06ca6351, 0x14292967,
|
||||
0x27b70a85, 0x2e1b2138,
|
||||
0x4d2c6dfc, 0x53380d13,
|
||||
0x650a7354, 0x766a0abb,
|
||||
0x81c2c92e, 0x92722c85,
|
||||
0xa2bfe8a1, 0xa81a664b,
|
||||
0xc24b8b70, 0xc76c51a3,
|
||||
0xd192e819, 0xd6990624,
|
||||
0xf40e3585, 0x106aa070,
|
||||
0x19a4c116, 0x1e376c08,
|
||||
0x2748774c, 0x34b0bcb5,
|
||||
0x391c0cb3, 0x4ed8aa4a,
|
||||
0x5b9cca4f, 0x682e6ff3,
|
||||
0x748f82ee, 0x78a5636f,
|
||||
0x84c87814, 0x8cc70208,
|
||||
0x90befffa, 0xa4506ceb,
|
||||
0xbef9a3f7, 0xc67178f2,
|
||||
0xca273ece, 0xd186b8c7, /* [64]+ are used for sha512 only */
|
||||
0xeada7dd6, 0xf57d4f7f,
|
||||
0x06f067aa, 0x0a637dc5,
|
||||
0x113f9804, 0x1b710b35,
|
||||
0x28db77f5, 0x32caab7b,
|
||||
0x3c9ebe0a, 0x431d67c4,
|
||||
0x4cc5d4be, 0x597f299c,
|
||||
0x5fcb6fab, 0x6c44198c
|
||||
};
|
||||
/* Constants for SHA512 from FIPS 180-2:4.2.3. */
|
||||
static const uint32_t K512_lo[80] = {
|
||||
0xd728ae22, 0x23ef65cd,
|
||||
0xec4d3b2f, 0x8189dbbc,
|
||||
0xf348b538, 0xb605d019,
|
||||
0xaf194f9b, 0xda6d8118,
|
||||
0xa3030242, 0x45706fbe,
|
||||
0x4ee4b28c, 0xd5ffb4e2,
|
||||
0xf27b896f, 0x3b1696b1,
|
||||
0x25c71235, 0xcf692694,
|
||||
0x9ef14ad2, 0x384f25e3,
|
||||
0x8b8cd5b5, 0x77ac9c65,
|
||||
0x592b0275, 0x6ea6e483,
|
||||
0xbd41fbd4, 0x831153b5,
|
||||
0xee66dfab, 0x2db43210,
|
||||
0x98fb213f, 0xbeef0ee4,
|
||||
0x3da88fc2, 0x930aa725,
|
||||
0xe003826f, 0x0a0e6e70,
|
||||
0x46d22ffc, 0x5c26c926,
|
||||
0x5ac42aed, 0x9d95b3df,
|
||||
0x8baf63de, 0x3c77b2a8,
|
||||
0x47edaee6, 0x1482353b,
|
||||
0x4cf10364, 0xbc423001,
|
||||
0xd0f89791, 0x0654be30,
|
||||
0xd6ef5218, 0x5565a910,
|
||||
0x5771202a, 0x32bbd1b8,
|
||||
0xb8d2d0c8, 0x5141ab53,
|
||||
0xdf8eeb99, 0xe19b48a8,
|
||||
0xc5c95a63, 0xe3418acb,
|
||||
0x7763e373, 0xd6b2b8a3,
|
||||
0x5defb2fc, 0x43172f60,
|
||||
0xa1f0ab72, 0x1a6439ec,
|
||||
0x23631e28, 0xde82bde9,
|
||||
0xb2c67915, 0xe372532b,
|
||||
0xea26619c, 0x21c0c207,
|
||||
0xcde0eb1e, 0xee6ed178,
|
||||
0x72176fba, 0xa2c898a6,
|
||||
0xbef90dae, 0x131c471b,
|
||||
0x23047d84, 0x40c72493,
|
||||
0x15c9bebc, 0x9c100d4c,
|
||||
0xcb3e42b6, 0xfc657e2a,
|
||||
0x3ad6faec, 0x4a475817
|
||||
/* Constants for SHA512 from FIPS 180-2:4.2.3.
|
||||
* SHA256 constants from FIPS 180-2:4.2.2
|
||||
* are the most significant half of first 64 elements
|
||||
* of the same array.
|
||||
*/
|
||||
static const uint64_t sha_K[80] = {
|
||||
0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
|
||||
0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
|
||||
0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
|
||||
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
|
||||
0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
|
||||
0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
|
||||
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
|
||||
0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
|
||||
0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
|
||||
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
|
||||
0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
|
||||
0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
|
||||
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
|
||||
0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
|
||||
0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
|
||||
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
|
||||
0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
|
||||
0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
|
||||
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
|
||||
0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
|
||||
0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
|
||||
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
|
||||
0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
|
||||
0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
|
||||
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
|
||||
0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
|
||||
0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
|
||||
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
|
||||
0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
|
||||
0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
|
||||
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
|
||||
0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
|
||||
0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, /* [64]+ are used for sha512 only */
|
||||
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
|
||||
0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
|
||||
0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
|
||||
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
|
||||
0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
|
||||
0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
|
||||
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
|
||||
};
|
||||
|
||||
/* Process LEN bytes of BUFFER, accumulating context into CTX.
|
||||
LEN is rounded _down_ to 64. */
|
||||
static void FAST_FUNC sha256_process_block64(sha256_ctx_t *ctx)
|
||||
{
|
||||
unsigned t;
|
||||
uint32_t W[64];
|
||||
uint32_t a = ctx->hash[0];
|
||||
uint32_t b = ctx->hash[1];
|
||||
uint32_t c = ctx->hash[2];
|
||||
uint32_t d = ctx->hash[3];
|
||||
uint32_t e = ctx->hash[4];
|
||||
uint32_t f = ctx->hash[5];
|
||||
uint32_t g = ctx->hash[6];
|
||||
uint32_t h = ctx->hash[7];
|
||||
uint32_t W[64], a, b, c, d, e, f, g, h;
|
||||
const uint32_t *words = (uint32_t*) ctx->wbuffer;
|
||||
|
||||
/* Operators defined in FIPS 180-2:4.1.2. */
|
||||
@ -234,9 +185,24 @@ static void FAST_FUNC sha256_process_block64(sha256_ctx_t *ctx)
|
||||
for (/*t = 16*/; t < 64; ++t)
|
||||
W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16];
|
||||
|
||||
a = ctx->hash[0];
|
||||
b = ctx->hash[1];
|
||||
c = ctx->hash[2];
|
||||
d = ctx->hash[3];
|
||||
e = ctx->hash[4];
|
||||
f = ctx->hash[5];
|
||||
g = ctx->hash[6];
|
||||
h = ctx->hash[7];
|
||||
|
||||
/* The actual computation according to FIPS 180-2:6.2.2 step 3. */
|
||||
for (t = 0; t < 64; ++t) {
|
||||
uint32_t T1 = h + S1(e) + Ch(e, f, g) + K256[t] + W[t];
|
||||
/* Need to fetch upper half of sha_K[t] */
|
||||
#if BB_BIG_ENDIAN
|
||||
uint32_t K_t = ((uint32_t*)(sha_K + t))[0];
|
||||
#else
|
||||
uint32_t K_t = ((uint32_t*)(sha_K + t))[1];
|
||||
#endif
|
||||
uint32_t T1 = h + S1(e) + Ch(e, f, g) + K_t + W[t];
|
||||
uint32_t T2 = S0(a) + Maj(a, b, c);
|
||||
h = g;
|
||||
g = f;
|
||||
@ -264,12 +230,14 @@ static void FAST_FUNC sha256_process_block64(sha256_ctx_t *ctx)
|
||||
ctx->hash[6] += g;
|
||||
ctx->hash[7] += h;
|
||||
}
|
||||
/* Process LEN bytes of BUFFER, accumulating context into CTX.
|
||||
LEN is rounded _down_ to 128. */
|
||||
|
||||
static void FAST_FUNC sha512_process_block128(sha512_ctx_t *ctx)
|
||||
{
|
||||
unsigned t;
|
||||
uint64_t W[80];
|
||||
/* On i386, having assignments here (not later as sha256 does)
|
||||
* produces 99 bytes smaller code with gcc 4.3.1
|
||||
*/
|
||||
uint64_t a = ctx->hash[0];
|
||||
uint64_t b = ctx->hash[1];
|
||||
uint64_t c = ctx->hash[2];
|
||||
@ -298,8 +266,7 @@ static void FAST_FUNC sha512_process_block128(sha512_ctx_t *ctx)
|
||||
|
||||
/* The actual computation according to FIPS 180-2:6.3.2 step 3. */
|
||||
for (t = 0; t < 80; ++t) {
|
||||
uint64_t K512_t = ((uint64_t)(K256[t]) << 32) + K512_lo[t];
|
||||
uint64_t T1 = h + S1(e) + Ch(e, f, g) + K512_t + W[t];
|
||||
uint64_t T1 = h + S1(e) + Ch(e, f, g) + sha_K[t] + W[t];
|
||||
uint64_t T2 = S0(a) + Maj(a, b, c);
|
||||
h = g;
|
||||
g = f;
|
||||
@ -360,6 +327,7 @@ static const uint32_t init512_lo[] = {
|
||||
0xfb41bd6b,
|
||||
0x137e2179
|
||||
};
|
||||
|
||||
/* Initialize structure containing state of computation.
|
||||
(FIPS 180-2:5.3.2) */
|
||||
void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)
|
||||
@ -368,6 +336,7 @@ void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)
|
||||
ctx->total64 = 0;
|
||||
ctx->process_block = sha256_process_block64;
|
||||
}
|
||||
|
||||
/* Initialize structure containing state of computation.
|
||||
(FIPS 180-2:5.3.3) */
|
||||
void FAST_FUNC sha512_begin(sha512_ctx_t *ctx)
|
||||
@ -379,10 +348,11 @@ void FAST_FUNC sha512_begin(sha512_ctx_t *ctx)
|
||||
}
|
||||
|
||||
|
||||
/* Used also for sha256 */
|
||||
void FAST_FUNC sha1_hash(const void *buffer, size_t len, sha1_ctx_t *ctx)
|
||||
{
|
||||
unsigned in_buf = ctx->total64 & SHA1_MASK;
|
||||
unsigned add = SHA1_BLOCK_SIZE - in_buf;
|
||||
unsigned in_buf = ctx->total64 & 63;
|
||||
unsigned add = 64 - in_buf;
|
||||
|
||||
ctx->total64 += len;
|
||||
|
||||
@ -390,7 +360,7 @@ void FAST_FUNC sha1_hash(const void *buffer, size_t len, sha1_ctx_t *ctx)
|
||||
memcpy(ctx->wbuffer + in_buf, buffer, add);
|
||||
buffer = (const char *)buffer + add;
|
||||
len -= add;
|
||||
add = SHA1_BLOCK_SIZE;
|
||||
add = 64;
|
||||
in_buf = 0;
|
||||
ctx->process_block(ctx);
|
||||
}
|
||||
@ -423,17 +393,18 @@ void FAST_FUNC sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx)
|
||||
}
|
||||
|
||||
|
||||
/* Used also for sha256 */
|
||||
void FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx)
|
||||
{
|
||||
unsigned i, pad, in_buf;
|
||||
|
||||
in_buf = ctx->total64 & SHA1_MASK;
|
||||
in_buf = ctx->total64 & 63;
|
||||
/* Pad the buffer to the next 64-byte boundary with 0x80,0,0,0... */
|
||||
ctx->wbuffer[in_buf++] = 0x80;
|
||||
|
||||
/* This loop iterates either once or twice, no more, no less */
|
||||
while (1) {
|
||||
pad = SHA1_BLOCK_SIZE - in_buf;
|
||||
pad = 64 - in_buf;
|
||||
memset(ctx->wbuffer + in_buf, 0, pad);
|
||||
in_buf = 0;
|
||||
/* Do we have enough space for the length count? */
|
||||
@ -442,7 +413,7 @@ void FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx)
|
||||
uint64_t t = ctx->total64 << 3;
|
||||
t = hton64(t);
|
||||
/* wbuffer is suitably aligned for this */
|
||||
*(uint64_t *) (&ctx->wbuffer[SHA1_BLOCK_SIZE - 8]) = t;
|
||||
*(uint64_t *) (&ctx->wbuffer[64 - 8]) = t;
|
||||
}
|
||||
ctx->process_block(ctx);
|
||||
if (pad >= 8)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user