| /* SHA-256 and SHA-512 implementation based on code by Oliver Gay |
| * <olivier.gay@a3.epfl.ch> under a BSD-style license. See below. |
| */ |
| |
| /* |
| * FIPS 180-2 SHA-224/256/384/512 implementation |
| * Last update: 02/02/2007 |
| * Issue date: 04/30/2005 |
| * |
| * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch> |
| * 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. |
| * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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 "sha.h" |
| #include <string.h> |
| |
| #define SHFR(x, n) (x >> n) |
| #define ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n))) |
| #define ROTL(x, n) ((x << n) | (x >> ((sizeof(x) << 3) - n))) |
| #define CH(x, y, z) ((x & y) ^ (~x & z)) |
| #define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z)) |
| |
| #define SHA256_F1(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22)) |
| #define SHA256_F2(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25)) |
| #define SHA256_F3(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHFR(x, 3)) |
| #define SHA256_F4(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHFR(x, 10)) |
| |
| #define SHA512_F1(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39)) |
| #define SHA512_F2(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41)) |
| #define SHA512_F3(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHFR(x, 7)) |
| #define SHA512_F4(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHFR(x, 6)) |
| |
| #define UNPACK32(x, str) \ |
| { \ |
| *((str) + 3) = (uint8_t) ((x) ); \ |
| *((str) + 2) = (uint8_t) ((x) >> 8); \ |
| *((str) + 1) = (uint8_t) ((x) >> 16); \ |
| *((str) + 0) = (uint8_t) ((x) >> 24); \ |
| } |
| |
| #define PACK32(str, x) \ |
| { \ |
| *(x) = ((uint32_t) *((str) + 3) ) \ |
| | ((uint32_t) *((str) + 2) << 8) \ |
| | ((uint32_t) *((str) + 1) << 16) \ |
| | ((uint32_t) *((str) + 0) << 24); \ |
| } |
| |
| #define UNPACK64(x, str) \ |
| { \ |
| *((str) + 7) = (uint8_t) ((x) ); \ |
| *((str) + 6) = (uint8_t) ((x) >> 8); \ |
| *((str) + 5) = (uint8_t) ((x) >> 16); \ |
| *((str) + 4) = (uint8_t) ((x) >> 24); \ |
| *((str) + 3) = (uint8_t) ((x) >> 32); \ |
| *((str) + 2) = (uint8_t) ((x) >> 40); \ |
| *((str) + 1) = (uint8_t) ((x) >> 48); \ |
| *((str) + 0) = (uint8_t) ((x) >> 56); \ |
| } |
| |
| #define PACK64(str, x) \ |
| { \ |
| *(x) = ((uint64_t) *((str) + 7) ) \ |
| | ((uint64_t) *((str) + 6) << 8) \ |
| | ((uint64_t) *((str) + 5) << 16) \ |
| | ((uint64_t) *((str) + 4) << 24) \ |
| | ((uint64_t) *((str) + 3) << 32) \ |
| | ((uint64_t) *((str) + 2) << 40) \ |
| | ((uint64_t) *((str) + 1) << 48) \ |
| | ((uint64_t) *((str) + 0) << 56); \ |
| } |
| |
| /* Macros used for loops unrolling */ |
| |
| #define SHA256_SCR(i) \ |
| { \ |
| w[i] = SHA256_F4(w[i - 2]) + w[i - 7] \ |
| + SHA256_F3(w[i - 15]) + w[i - 16]; \ |
| } |
| |
| #define SHA512_SCR(i) \ |
| { \ |
| w[i] = SHA512_F4(w[i - 2]) + w[i - 7] \ |
| + SHA512_F3(w[i - 15]) + w[i - 16]; \ |
| } |
| |
| #define SHA256_EXP(a, b, c, d, e, f, g, h, j) \ |
| { \ |
| t1 = wv[h] + SHA256_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) \ |
| + sha256_k[j] + w[j]; \ |
| t2 = SHA256_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \ |
| wv[d] += t1; \ |
| wv[h] = t1 + t2; \ |
| } |
| |
| #define SHA512_EXP(a, b, c, d, e, f, g ,h, j) \ |
| { \ |
| t1 = wv[h] + SHA512_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) \ |
| + sha512_k[j] + w[j]; \ |
| t2 = SHA512_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \ |
| wv[d] += t1; \ |
| wv[h] = t1 + t2; \ |
| } |
| |
| uint32_t sha256_h0[8] = { |
| 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, |
| 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19}; |
| |
| uint64_t sha512_h0[8] = { |
| 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL, |
| 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL, |
| 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL, |
| 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL}; |
| |
| uint32_t sha256_k[64] = { |
| 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}; |
| |
| uint64_t sha512_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, |
| 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, |
| 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, |
| 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, |
| 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, |
| 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, |
| 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, |
| 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL}; |
| |
| |
| /* SHA-256 implementation */ |
| void SHA256_init(SHA256_CTX *ctx) { |
| #ifndef UNROLL_LOOPS |
| int i; |
| for (i = 0; i < 8; i++) { |
| ctx->h[i] = sha256_h0[i]; |
| } |
| #else |
| ctx->h[0] = sha256_h0[0]; ctx->h[1] = sha256_h0[1]; |
| ctx->h[2] = sha256_h0[2]; ctx->h[3] = sha256_h0[3]; |
| ctx->h[4] = sha256_h0[4]; ctx->h[5] = sha256_h0[5]; |
| ctx->h[6] = sha256_h0[6]; ctx->h[7] = sha256_h0[7]; |
| #endif /* !UNROLL_LOOPS */ |
| |
| ctx->len = 0; |
| ctx->tot_len = 0; |
| } |
| |
| |
| static void SHA256_transform(SHA256_CTX* ctx, const uint8_t* message, |
| unsigned int block_nb) { |
| uint32_t w[64]; |
| uint32_t wv[8]; |
| uint32_t t1, t2; |
| const unsigned char *sub_block; |
| int i; |
| |
| #ifndef UNROLL_LOOPS |
| int j; |
| #endif |
| |
| for (i = 0; i < (int) block_nb; i++) { |
| sub_block = message + (i << 6); |
| |
| #ifndef UNROLL_LOOPS |
| for (j = 0; j < 16; j++) { |
| PACK32(&sub_block[j << 2], &w[j]); |
| } |
| |
| for (j = 16; j < 64; j++) { |
| SHA256_SCR(j); |
| } |
| |
| for (j = 0; j < 8; j++) { |
| wv[j] = ctx->h[j]; |
| } |
| |
| for (j = 0; j < 64; j++) { |
| t1 = wv[7] + SHA256_F2(wv[4]) + CH(wv[4], wv[5], wv[6]) |
| + sha256_k[j] + w[j]; |
| t2 = SHA256_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]); |
| wv[7] = wv[6]; |
| wv[6] = wv[5]; |
| wv[5] = wv[4]; |
| wv[4] = wv[3] + t1; |
| wv[3] = wv[2]; |
| wv[2] = wv[1]; |
| wv[1] = wv[0]; |
| wv[0] = t1 + t2; |
| } |
| |
| for (j = 0; j < 8; j++) { |
| ctx->h[j] += wv[j]; |
| } |
| #else |
| PACK32(&sub_block[ 0], &w[ 0]); PACK32(&sub_block[ 4], &w[ 1]); |
| PACK32(&sub_block[ 8], &w[ 2]); PACK32(&sub_block[12], &w[ 3]); |
| PACK32(&sub_block[16], &w[ 4]); PACK32(&sub_block[20], &w[ 5]); |
| PACK32(&sub_block[24], &w[ 6]); PACK32(&sub_block[28], &w[ 7]); |
| PACK32(&sub_block[32], &w[ 8]); PACK32(&sub_block[36], &w[ 9]); |
| PACK32(&sub_block[40], &w[10]); PACK32(&sub_block[44], &w[11]); |
| PACK32(&sub_block[48], &w[12]); PACK32(&sub_block[52], &w[13]); |
| PACK32(&sub_block[56], &w[14]); PACK32(&sub_block[60], &w[15]); |
| |
| SHA256_SCR(16); SHA256_SCR(17); SHA256_SCR(18); SHA256_SCR(19); |
| SHA256_SCR(20); SHA256_SCR(21); SHA256_SCR(22); SHA256_SCR(23); |
| SHA256_SCR(24); SHA256_SCR(25); SHA256_SCR(26); SHA256_SCR(27); |
| SHA256_SCR(28); SHA256_SCR(29); SHA256_SCR(30); SHA256_SCR(31); |
| SHA256_SCR(32); SHA256_SCR(33); SHA256_SCR(34); SHA256_SCR(35); |
| SHA256_SCR(36); SHA256_SCR(37); SHA256_SCR(38); SHA256_SCR(39); |
| SHA256_SCR(40); SHA256_SCR(41); SHA256_SCR(42); SHA256_SCR(43); |
| SHA256_SCR(44); SHA256_SCR(45); SHA256_SCR(46); SHA256_SCR(47); |
| SHA256_SCR(48); SHA256_SCR(49); SHA256_SCR(50); SHA256_SCR(51); |
| SHA256_SCR(52); SHA256_SCR(53); SHA256_SCR(54); SHA256_SCR(55); |
| SHA256_SCR(56); SHA256_SCR(57); SHA256_SCR(58); SHA256_SCR(59); |
| SHA256_SCR(60); SHA256_SCR(61); SHA256_SCR(62); SHA256_SCR(63); |
| |
| wv[0] = ctx->h[0]; wv[1] = ctx->h[1]; |
| wv[2] = ctx->h[2]; wv[3] = ctx->h[3]; |
| wv[4] = ctx->h[4]; wv[5] = ctx->h[5]; |
| wv[6] = ctx->h[6]; wv[7] = ctx->h[7]; |
| |
| SHA256_EXP(0,1,2,3,4,5,6,7, 0); SHA256_EXP(7,0,1,2,3,4,5,6, 1); |
| SHA256_EXP(6,7,0,1,2,3,4,5, 2); SHA256_EXP(5,6,7,0,1,2,3,4, 3); |
| SHA256_EXP(4,5,6,7,0,1,2,3, 4); SHA256_EXP(3,4,5,6,7,0,1,2, 5); |
| SHA256_EXP(2,3,4,5,6,7,0,1, 6); SHA256_EXP(1,2,3,4,5,6,7,0, 7); |
| SHA256_EXP(0,1,2,3,4,5,6,7, 8); SHA256_EXP(7,0,1,2,3,4,5,6, 9); |
| SHA256_EXP(6,7,0,1,2,3,4,5,10); SHA256_EXP(5,6,7,0,1,2,3,4,11); |
| SHA256_EXP(4,5,6,7,0,1,2,3,12); SHA256_EXP(3,4,5,6,7,0,1,2,13); |
| SHA256_EXP(2,3,4,5,6,7,0,1,14); SHA256_EXP(1,2,3,4,5,6,7,0,15); |
| SHA256_EXP(0,1,2,3,4,5,6,7,16); SHA256_EXP(7,0,1,2,3,4,5,6,17); |
| SHA256_EXP(6,7,0,1,2,3,4,5,18); SHA256_EXP(5,6,7,0,1,2,3,4,19); |
| SHA256_EXP(4,5,6,7,0,1,2,3,20); SHA256_EXP(3,4,5,6,7,0,1,2,21); |
| SHA256_EXP(2,3,4,5,6,7,0,1,22); SHA256_EXP(1,2,3,4,5,6,7,0,23); |
| SHA256_EXP(0,1,2,3,4,5,6,7,24); SHA256_EXP(7,0,1,2,3,4,5,6,25); |
| SHA256_EXP(6,7,0,1,2,3,4,5,26); SHA256_EXP(5,6,7,0,1,2,3,4,27); |
| SHA256_EXP(4,5,6,7,0,1,2,3,28); SHA256_EXP(3,4,5,6,7,0,1,2,29); |
| SHA256_EXP(2,3,4,5,6,7,0,1,30); SHA256_EXP(1,2,3,4,5,6,7,0,31); |
| SHA256_EXP(0,1,2,3,4,5,6,7,32); SHA256_EXP(7,0,1,2,3,4,5,6,33); |
| SHA256_EXP(6,7,0,1,2,3,4,5,34); SHA256_EXP(5,6,7,0,1,2,3,4,35); |
| SHA256_EXP(4,5,6,7,0,1,2,3,36); SHA256_EXP(3,4,5,6,7,0,1,2,37); |
| SHA256_EXP(2,3,4,5,6,7,0,1,38); SHA256_EXP(1,2,3,4,5,6,7,0,39); |
| SHA256_EXP(0,1,2,3,4,5,6,7,40); SHA256_EXP(7,0,1,2,3,4,5,6,41); |
| SHA256_EXP(6,7,0,1,2,3,4,5,42); SHA256_EXP(5,6,7,0,1,2,3,4,43); |
| SHA256_EXP(4,5,6,7,0,1,2,3,44); SHA256_EXP(3,4,5,6,7,0,1,2,45); |
| SHA256_EXP(2,3,4,5,6,7,0,1,46); SHA256_EXP(1,2,3,4,5,6,7,0,47); |
| SHA256_EXP(0,1,2,3,4,5,6,7,48); SHA256_EXP(7,0,1,2,3,4,5,6,49); |
| SHA256_EXP(6,7,0,1,2,3,4,5,50); SHA256_EXP(5,6,7,0,1,2,3,4,51); |
| SHA256_EXP(4,5,6,7,0,1,2,3,52); SHA256_EXP(3,4,5,6,7,0,1,2,53); |
| SHA256_EXP(2,3,4,5,6,7,0,1,54); SHA256_EXP(1,2,3,4,5,6,7,0,55); |
| SHA256_EXP(0,1,2,3,4,5,6,7,56); SHA256_EXP(7,0,1,2,3,4,5,6,57); |
| SHA256_EXP(6,7,0,1,2,3,4,5,58); SHA256_EXP(5,6,7,0,1,2,3,4,59); |
| SHA256_EXP(4,5,6,7,0,1,2,3,60); SHA256_EXP(3,4,5,6,7,0,1,2,61); |
| SHA256_EXP(2,3,4,5,6,7,0,1,62); SHA256_EXP(1,2,3,4,5,6,7,0,63); |
| |
| ctx->h[0] += wv[0]; ctx->h[1] += wv[1]; |
| ctx->h[2] += wv[2]; ctx->h[3] += wv[3]; |
| ctx->h[4] += wv[4]; ctx->h[5] += wv[5]; |
| ctx->h[6] += wv[6]; ctx->h[7] += wv[7]; |
| #endif /* !UNROLL_LOOPS */ |
| } |
| } |
| |
| |
| |
| void SHA256_update(SHA256_CTX* ctx, const uint8_t* data, uint64_t len) { |
| unsigned int block_nb; |
| unsigned int new_len, rem_len, tmp_len; |
| const uint8_t *shifted_data; |
| |
| tmp_len = SHA256_BLOCK_SIZE - ctx->len; |
| rem_len = len < tmp_len ? len : tmp_len; |
| |
| memcpy(&ctx->block[ctx->len], data, rem_len); |
| |
| if (ctx->len + len < SHA256_BLOCK_SIZE) { |
| ctx->len += len; |
| return; |
| } |
| |
| new_len = len - rem_len; |
| block_nb = new_len / SHA256_BLOCK_SIZE; |
| |
| shifted_data = data + rem_len; |
| |
| SHA256_transform(ctx, ctx->block, 1); |
| SHA256_transform(ctx, shifted_data, block_nb); |
| |
| rem_len = new_len % SHA256_BLOCK_SIZE; |
| |
| memcpy(ctx->block, &shifted_data[block_nb << 6], |
| rem_len); |
| |
| ctx->len = rem_len; |
| ctx->tot_len += (block_nb + 1) << 6; |
| } |
| |
| uint8_t* SHA256_final(SHA256_CTX* ctx) { |
| unsigned int block_nb; |
| unsigned int pm_len; |
| unsigned int len_b; |
| #ifndef UNROLL_LOOPS |
| int i; |
| #endif |
| |
| block_nb = (1 + ((SHA256_BLOCK_SIZE - 9) |
| < (ctx->len % SHA256_BLOCK_SIZE))); |
| |
| len_b = (ctx->tot_len + ctx->len) << 3; |
| pm_len = block_nb << 6; |
| |
| memset(ctx->block + ctx->len, 0, pm_len - ctx->len); |
| ctx->block[ctx->len] = 0x80; |
| UNPACK32(len_b, ctx->block + pm_len - 4); |
| |
| SHA256_transform(ctx, ctx->block, block_nb); |
| |
| #ifndef UNROLL_LOOPS |
| for (i = 0 ; i < 8; i++) { |
| UNPACK32(ctx->h[i], &ctx->buf[i << 2]); |
| } |
| #else |
| UNPACK32(ctx->h[0], &ctx->buf[ 0]); |
| UNPACK32(ctx->h[1], &ctx->buf[ 4]); |
| UNPACK32(ctx->h[2], &ctx->buf[ 8]); |
| UNPACK32(ctx->h[3], &ctx->buf[12]); |
| UNPACK32(ctx->h[4], &ctx->buf[16]); |
| UNPACK32(ctx->h[5], &ctx->buf[20]); |
| UNPACK32(ctx->h[6], &ctx->buf[24]); |
| UNPACK32(ctx->h[7], &ctx->buf[28]); |
| #endif /* !UNROLL_LOOPS */ |
| |
| return ctx->buf; |
| } |
| |
| |
| /* SHA-512 implementation */ |
| |
| void SHA512_init(SHA512_CTX *ctx) { |
| #ifndef UNROLL_LOOPS |
| int i; |
| for (i = 0; i < 8; i++) { |
| ctx->h[i] = sha512_h0[i]; |
| } |
| #else |
| ctx->h[0] = sha512_h0[0]; ctx->h[1] = sha512_h0[1]; |
| ctx->h[2] = sha512_h0[2]; ctx->h[3] = sha512_h0[3]; |
| ctx->h[4] = sha512_h0[4]; ctx->h[5] = sha512_h0[5]; |
| ctx->h[6] = sha512_h0[6]; ctx->h[7] = sha512_h0[7]; |
| #endif /* !UNROLL_LOOPS */ |
| |
| ctx->len = 0; |
| ctx->tot_len = 0; |
| } |
| |
| |
| static void SHA512_transform(SHA512_CTX* ctx, const uint8_t* message, |
| unsigned int block_nb) |
| { |
| uint64_t w[80]; |
| uint64_t wv[8]; |
| uint64_t t1, t2; |
| const uint8_t *sub_block; |
| int i, j; |
| |
| for (i = 0; i < (int) block_nb; i++) { |
| sub_block = message + (i << 7); |
| |
| #ifndef UNROLL_LOOPS |
| for (j = 0; j < 16; j++) { |
| PACK64(&sub_block[j << 3], &w[j]); |
| } |
| |
| for (j = 16; j < 80; j++) { |
| SHA512_SCR(j); |
| } |
| |
| for (j = 0; j < 8; j++) { |
| wv[j] = ctx->h[j]; |
| } |
| |
| for (j = 0; j < 80; j++) { |
| t1 = wv[7] + SHA512_F2(wv[4]) + CH(wv[4], wv[5], wv[6]) |
| + sha512_k[j] + w[j]; |
| t2 = SHA512_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]); |
| wv[7] = wv[6]; |
| wv[6] = wv[5]; |
| wv[5] = wv[4]; |
| wv[4] = wv[3] + t1; |
| wv[3] = wv[2]; |
| wv[2] = wv[1]; |
| wv[1] = wv[0]; |
| wv[0] = t1 + t2; |
| } |
| |
| for (j = 0; j < 8; j++) { |
| ctx->h[j] += wv[j]; |
| } |
| #else |
| PACK64(&sub_block[ 0], &w[ 0]); PACK64(&sub_block[ 8], &w[ 1]); |
| PACK64(&sub_block[ 16], &w[ 2]); PACK64(&sub_block[ 24], &w[ 3]); |
| PACK64(&sub_block[ 32], &w[ 4]); PACK64(&sub_block[ 40], &w[ 5]); |
| PACK64(&sub_block[ 48], &w[ 6]); PACK64(&sub_block[ 56], &w[ 7]); |
| PACK64(&sub_block[ 64], &w[ 8]); PACK64(&sub_block[ 72], &w[ 9]); |
| PACK64(&sub_block[ 80], &w[10]); PACK64(&sub_block[ 88], &w[11]); |
| PACK64(&sub_block[ 96], &w[12]); PACK64(&sub_block[104], &w[13]); |
| PACK64(&sub_block[112], &w[14]); PACK64(&sub_block[120], &w[15]); |
| |
| SHA512_SCR(16); SHA512_SCR(17); SHA512_SCR(18); SHA512_SCR(19); |
| SHA512_SCR(20); SHA512_SCR(21); SHA512_SCR(22); SHA512_SCR(23); |
| SHA512_SCR(24); SHA512_SCR(25); SHA512_SCR(26); SHA512_SCR(27); |
| SHA512_SCR(28); SHA512_SCR(29); SHA512_SCR(30); SHA512_SCR(31); |
| SHA512_SCR(32); SHA512_SCR(33); SHA512_SCR(34); SHA512_SCR(35); |
| SHA512_SCR(36); SHA512_SCR(37); SHA512_SCR(38); SHA512_SCR(39); |
| SHA512_SCR(40); SHA512_SCR(41); SHA512_SCR(42); SHA512_SCR(43); |
| SHA512_SCR(44); SHA512_SCR(45); SHA512_SCR(46); SHA512_SCR(47); |
| SHA512_SCR(48); SHA512_SCR(49); SHA512_SCR(50); SHA512_SCR(51); |
| SHA512_SCR(52); SHA512_SCR(53); SHA512_SCR(54); SHA512_SCR(55); |
| SHA512_SCR(56); SHA512_SCR(57); SHA512_SCR(58); SHA512_SCR(59); |
| SHA512_SCR(60); SHA512_SCR(61); SHA512_SCR(62); SHA512_SCR(63); |
| SHA512_SCR(64); SHA512_SCR(65); SHA512_SCR(66); SHA512_SCR(67); |
| SHA512_SCR(68); SHA512_SCR(69); SHA512_SCR(70); SHA512_SCR(71); |
| SHA512_SCR(72); SHA512_SCR(73); SHA512_SCR(74); SHA512_SCR(75); |
| SHA512_SCR(76); SHA512_SCR(77); SHA512_SCR(78); SHA512_SCR(79); |
| |
| wv[0] = ctx->h[0]; wv[1] = ctx->h[1]; |
| wv[2] = ctx->h[2]; wv[3] = ctx->h[3]; |
| wv[4] = ctx->h[4]; wv[5] = ctx->h[5]; |
| wv[6] = ctx->h[6]; wv[7] = ctx->h[7]; |
| |
| j = 0; |
| |
| do { |
| SHA512_EXP(0,1,2,3,4,5,6,7,j); j++; |
| SHA512_EXP(7,0,1,2,3,4,5,6,j); j++; |
| SHA512_EXP(6,7,0,1,2,3,4,5,j); j++; |
| SHA512_EXP(5,6,7,0,1,2,3,4,j); j++; |
| SHA512_EXP(4,5,6,7,0,1,2,3,j); j++; |
| SHA512_EXP(3,4,5,6,7,0,1,2,j); j++; |
| SHA512_EXP(2,3,4,5,6,7,0,1,j); j++; |
| SHA512_EXP(1,2,3,4,5,6,7,0,j); j++; |
| } while (j < 80); |
| |
| ctx->h[0] += wv[0]; ctx->h[1] += wv[1]; |
| ctx->h[2] += wv[2]; ctx->h[3] += wv[3]; |
| ctx->h[4] += wv[4]; ctx->h[5] += wv[5]; |
| ctx->h[6] += wv[6]; ctx->h[7] += wv[7]; |
| #endif /* !UNROLL_LOOPS */ |
| } |
| } |
| |
| |
| void SHA512_update(SHA512_CTX* ctx, const uint8_t* data, |
| uint64_t len) { |
| unsigned int block_nb; |
| unsigned int new_len, rem_len, tmp_len; |
| const uint8_t* shifted_data; |
| |
| tmp_len = SHA512_BLOCK_SIZE - ctx->len; |
| rem_len = len < tmp_len ? len : tmp_len; |
| |
| memcpy(&ctx->block[ctx->len], data, rem_len); |
| |
| if (ctx->len + len < SHA512_BLOCK_SIZE) { |
| ctx->len += len; |
| return; |
| } |
| |
| new_len = len - rem_len; |
| block_nb = new_len / SHA512_BLOCK_SIZE; |
| |
| shifted_data = data + rem_len; |
| |
| SHA512_transform(ctx, ctx->block, 1); |
| SHA512_transform(ctx, shifted_data, block_nb); |
| |
| rem_len = new_len % SHA512_BLOCK_SIZE; |
| |
| memcpy(ctx->block, &shifted_data[block_nb << 7], |
| rem_len); |
| |
| ctx->len = rem_len; |
| ctx->tot_len += (block_nb + 1) << 7; |
| } |
| |
| uint8_t* SHA512_final(SHA512_CTX* ctx) |
| { |
| unsigned int block_nb; |
| unsigned int pm_len; |
| unsigned int len_b; |
| |
| #ifndef UNROLL_LOOPS |
| int i; |
| #endif |
| |
| block_nb = 1 + ((SHA512_BLOCK_SIZE - 17) |
| < (ctx->len % SHA512_BLOCK_SIZE)); |
| |
| len_b = (ctx->tot_len + ctx->len) << 3; |
| pm_len = block_nb << 7; |
| |
| memset(ctx->block + ctx->len, 0, pm_len - ctx->len); |
| ctx->block[ctx->len] = 0x80; |
| UNPACK32(len_b, ctx->block + pm_len - 4); |
| |
| SHA512_transform(ctx, ctx->block, block_nb); |
| |
| #ifndef UNROLL_LOOPS |
| for (i = 0 ; i < 8; i++) { |
| UNPACK64(ctx->h[i], &ctx->buf[i << 3]); |
| } |
| #else |
| UNPACK64(ctx->h[0], &ctx->buf[ 0]); |
| UNPACK64(ctx->h[1], &ctx->buf[ 8]); |
| UNPACK64(ctx->h[2], &ctx->buf[16]); |
| UNPACK64(ctx->h[3], &ctx->buf[24]); |
| UNPACK64(ctx->h[4], &ctx->buf[32]); |
| UNPACK64(ctx->h[5], &ctx->buf[40]); |
| UNPACK64(ctx->h[6], &ctx->buf[48]); |
| UNPACK64(ctx->h[7], &ctx->buf[56]); |
| #endif /* !UNROLL_LOOPS */ |
| |
| return ctx->buf; |
| } |
| |
| |
| |
| /* Convenient functions. */ |
| uint8_t* SHA256(const uint8_t* data, uint64_t len, uint8_t* digest) { |
| const uint8_t* p; |
| int i; |
| SHA256_CTX ctx; |
| SHA256_init(&ctx); |
| SHA256_update(&ctx, data, len); |
| p = SHA256_final(&ctx); |
| for (i = 0; i < SHA256_DIGEST_SIZE; ++i) { |
| digest[i] = *p++; |
| } |
| return digest; |
| } |
| |
| |
| uint8_t* SHA512(const uint8_t* data, uint64_t len, uint8_t* digest) { |
| const uint8_t* p; |
| int i; |
| SHA512_CTX ctx; |
| SHA512_init(&ctx); |
| SHA512_update(&ctx, data, len); |
| p = SHA512_final(&ctx); |
| for (i = 0; i < SHA512_DIGEST_SIZE; ++i) { |
| digest[i] = *p++; |
| } |
| return digest; |
| } |