"Robert P. J. Day" | 63fc1a9 | 2006-07-02 19:47:05 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 2 | /* |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 3 | * Based on shasum from http://www.netsw.org/crypto/hash/ |
| 4 | * Majorly hacked up to use Dr Brian Gladman's sha1 code |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 5 | * |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 6 | * Copyright (C) 2002 Dr Brian Gladman <brg@gladman.me.uk>, Worcester, UK. |
| 7 | * Copyright (C) 2003 Glenn L. McGrath |
| 8 | * Copyright (C) 2003 Erik Andersen |
Denis Vlasenko | 9213a9e | 2006-09-17 16:28:10 +0000 | [diff] [blame] | 9 | * |
"Robert P. J. Day" | 5d8843e | 2006-07-10 11:41:19 +0000 | [diff] [blame] | 10 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 11 | * |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 12 | * --------------------------------------------------------------------------- |
| 13 | * Issue Date: 10/11/2002 |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 14 | * |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 15 | * This is a byte oriented version of SHA1 that operates on arrays of bytes |
| 16 | * stored in memory. It runs at 22 cycles per byte on a Pentium P4 processor |
| 17 | * |
| 18 | * --------------------------------------------------------------------------- |
| 19 | * |
| 20 | * SHA256 and SHA512 parts are: |
| 21 | * Released into the Public Domain by Ulrich Drepper <drepper@redhat.com>. |
Denis Vlasenko | ddb1b85 | 2009-03-12 16:05:02 +0000 | [diff] [blame] | 22 | * Shrank by Denys Vlasenko. |
| 23 | * |
| 24 | * --------------------------------------------------------------------------- |
| 25 | * |
| 26 | * The best way to test random blocksizes is to go to coreutils/md5_sha1_sum.c |
| 27 | * and replace "4096" with something like "2000 + time(NULL) % 2097", |
| 28 | * then rebuild and compare "shaNNNsum bigfile" results. |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 29 | */ |
| 30 | |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 31 | #include "libbb.h" |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 32 | |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 33 | #define rotl32(x,n) (((x) << (n)) | ((x) >> (32 - (n)))) |
| 34 | #define rotr32(x,n) (((x) >> (n)) | ((x) << (32 - (n)))) |
| 35 | /* for sha512: */ |
| 36 | #define rotr64(x,n) (((x) >> (n)) | ((x) << (64 - (n)))) |
| 37 | #if BB_LITTLE_ENDIAN |
| 38 | static inline uint64_t hton64(uint64_t v) |
| 39 | { |
| 40 | return (((uint64_t)htonl(v)) << 32) | htonl(v >> 32); |
| 41 | } |
| 42 | #else |
| 43 | #define hton64(v) (v) |
| 44 | #endif |
| 45 | #define ntoh64(v) hton64(v) |
| 46 | |
| 47 | /* To check alignment gcc has an appropriate operator. Other |
| 48 | compilers don't. */ |
| 49 | #if defined(__GNUC__) && __GNUC__ >= 2 |
| 50 | # define UNALIGNED_P(p,type) (((uintptr_t) p) % __alignof__(type) != 0) |
| 51 | #else |
| 52 | # define UNALIGNED_P(p,type) (((uintptr_t) p) % sizeof(type) != 0) |
| 53 | #endif |
| 54 | |
| 55 | |
Denys Vlasenko | fe4ef36 | 2009-07-05 20:34:38 +0200 | [diff] [blame] | 56 | /* Some arch headers have conflicting defines */ |
| 57 | #undef ch |
| 58 | #undef parity |
| 59 | #undef maj |
| 60 | #undef rnd |
| 61 | |
Denis Vlasenko | 8ec8d5e | 2009-03-15 02:56:00 +0000 | [diff] [blame] | 62 | static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 63 | { |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 64 | unsigned t; |
| 65 | uint32_t W[80], a, b, c, d, e; |
| 66 | const uint32_t *words = (uint32_t*) ctx->wbuffer; |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 67 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 68 | for (t = 0; t < 16; ++t) { |
| 69 | W[t] = ntohl(*words); |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 70 | words++; |
| 71 | } |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 72 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 73 | for (/*t = 16*/; t < 80; ++t) { |
| 74 | uint32_t T = W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16]; |
| 75 | W[t] = rotl32(T, 1); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 76 | } |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 77 | |
| 78 | a = ctx->hash[0]; |
| 79 | b = ctx->hash[1]; |
| 80 | c = ctx->hash[2]; |
| 81 | d = ctx->hash[3]; |
| 82 | e = ctx->hash[4]; |
| 83 | |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 84 | /* Reverse byte order in 32-bit words */ |
| 85 | #define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z)))) |
| 86 | #define parity(x,y,z) ((x) ^ (y) ^ (z)) |
| 87 | #define maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y)))) |
| 88 | /* A normal version as set out in the FIPS. This version uses */ |
| 89 | /* partial loop unrolling and is optimised for the Pentium 4 */ |
| 90 | #define rnd(f,k) \ |
| 91 | do { \ |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 92 | uint32_t T = a; \ |
| 93 | a = rotl32(a, 5) + f(b, c, d) + e + k + W[t]; \ |
| 94 | e = d; \ |
| 95 | d = c; \ |
| 96 | c = rotl32(b, 30); \ |
| 97 | b = T; \ |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 98 | } while (0) |
| 99 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 100 | for (t = 0; t < 20; ++t) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 101 | rnd(ch, 0x5a827999); |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 102 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 103 | for (/*t = 20*/; t < 40; ++t) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 104 | rnd(parity, 0x6ed9eba1); |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 105 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 106 | for (/*t = 40*/; t < 60; ++t) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 107 | rnd(maj, 0x8f1bbcdc); |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 108 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 109 | for (/*t = 60*/; t < 80; ++t) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 110 | rnd(parity, 0xca62c1d6); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 111 | #undef ch |
| 112 | #undef parity |
| 113 | #undef maj |
| 114 | #undef rnd |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 115 | |
| 116 | ctx->hash[0] += a; |
| 117 | ctx->hash[1] += b; |
| 118 | ctx->hash[2] += c; |
| 119 | ctx->hash[3] += d; |
| 120 | ctx->hash[4] += e; |
| 121 | } |
| 122 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 123 | /* Constants for SHA512 from FIPS 180-2:4.2.3. |
| 124 | * SHA256 constants from FIPS 180-2:4.2.2 |
| 125 | * are the most significant half of first 64 elements |
| 126 | * of the same array. |
| 127 | */ |
| 128 | static const uint64_t sha_K[80] = { |
| 129 | 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, |
| 130 | 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, |
| 131 | 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, |
| 132 | 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, |
| 133 | 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, |
| 134 | 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, |
| 135 | 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, |
| 136 | 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, |
| 137 | 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, |
| 138 | 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, |
| 139 | 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, |
| 140 | 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, |
| 141 | 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, |
| 142 | 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, |
| 143 | 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, |
| 144 | 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, |
| 145 | 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, |
| 146 | 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, |
| 147 | 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, |
| 148 | 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, |
| 149 | 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, |
| 150 | 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, |
| 151 | 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, |
| 152 | 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, |
| 153 | 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, |
| 154 | 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, |
| 155 | 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, |
| 156 | 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, |
| 157 | 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, |
| 158 | 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, |
| 159 | 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, |
| 160 | 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, |
| 161 | 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, /* [64]+ are used for sha512 only */ |
| 162 | 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, |
| 163 | 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, |
| 164 | 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, |
| 165 | 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, |
| 166 | 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, |
| 167 | 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, |
| 168 | 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 169 | }; |
| 170 | |
Denys Vlasenko | fe4ef36 | 2009-07-05 20:34:38 +0200 | [diff] [blame] | 171 | #undef Ch |
| 172 | #undef Maj |
| 173 | #undef S0 |
| 174 | #undef S1 |
| 175 | #undef R0 |
| 176 | #undef R1 |
| 177 | |
Denis Vlasenko | 8ec8d5e | 2009-03-15 02:56:00 +0000 | [diff] [blame] | 178 | static void FAST_FUNC sha256_process_block64(sha256_ctx_t *ctx) |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 179 | { |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 180 | unsigned t; |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 181 | uint32_t W[64], a, b, c, d, e, f, g, h; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 182 | const uint32_t *words = (uint32_t*) ctx->wbuffer; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 183 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 184 | /* Operators defined in FIPS 180-2:4.1.2. */ |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 185 | #define Ch(x, y, z) ((x & y) ^ (~x & z)) |
| 186 | #define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z)) |
| 187 | #define S0(x) (rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22)) |
| 188 | #define S1(x) (rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25)) |
| 189 | #define R0(x) (rotr32(x, 7) ^ rotr32(x, 18) ^ (x >> 3)) |
| 190 | #define R1(x) (rotr32(x, 17) ^ rotr32(x, 19) ^ (x >> 10)) |
| 191 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 192 | /* Compute the message schedule according to FIPS 180-2:6.2.2 step 2. */ |
| 193 | for (t = 0; t < 16; ++t) { |
| 194 | W[t] = ntohl(*words); |
| 195 | words++; |
| 196 | } |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 197 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 198 | for (/*t = 16*/; t < 64; ++t) |
| 199 | W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16]; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 200 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 201 | a = ctx->hash[0]; |
| 202 | b = ctx->hash[1]; |
| 203 | c = ctx->hash[2]; |
| 204 | d = ctx->hash[3]; |
| 205 | e = ctx->hash[4]; |
| 206 | f = ctx->hash[5]; |
| 207 | g = ctx->hash[6]; |
| 208 | h = ctx->hash[7]; |
| 209 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 210 | /* The actual computation according to FIPS 180-2:6.2.2 step 3. */ |
| 211 | for (t = 0; t < 64; ++t) { |
Denis Vlasenko | a2333c8 | 2009-03-28 19:08:23 +0000 | [diff] [blame] | 212 | /* Need to fetch upper half of sha_K[t] |
| 213 | * (I hope compiler is clever enough to just fetch |
| 214 | * upper half) |
| 215 | */ |
| 216 | uint32_t K_t = sha_K[t] >> 32; |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 217 | uint32_t T1 = h + S1(e) + Ch(e, f, g) + K_t + W[t]; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 218 | uint32_t T2 = S0(a) + Maj(a, b, c); |
| 219 | h = g; |
| 220 | g = f; |
| 221 | f = e; |
| 222 | e = d + T1; |
| 223 | d = c; |
| 224 | c = b; |
| 225 | b = a; |
| 226 | a = T1 + T2; |
| 227 | } |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 228 | #undef Ch |
| 229 | #undef Maj |
| 230 | #undef S0 |
| 231 | #undef S1 |
| 232 | #undef R0 |
| 233 | #undef R1 |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 234 | /* Add the starting values of the context according to FIPS 180-2:6.2.2 |
| 235 | step 4. */ |
| 236 | ctx->hash[0] += a; |
| 237 | ctx->hash[1] += b; |
| 238 | ctx->hash[2] += c; |
| 239 | ctx->hash[3] += d; |
| 240 | ctx->hash[4] += e; |
| 241 | ctx->hash[5] += f; |
| 242 | ctx->hash[6] += g; |
| 243 | ctx->hash[7] += h; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 244 | } |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 245 | |
Denis Vlasenko | 8ec8d5e | 2009-03-15 02:56:00 +0000 | [diff] [blame] | 246 | static void FAST_FUNC sha512_process_block128(sha512_ctx_t *ctx) |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 247 | { |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 248 | unsigned t; |
| 249 | uint64_t W[80]; |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 250 | /* On i386, having assignments here (not later as sha256 does) |
| 251 | * produces 99 bytes smaller code with gcc 4.3.1 |
| 252 | */ |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 253 | uint64_t a = ctx->hash[0]; |
| 254 | uint64_t b = ctx->hash[1]; |
| 255 | uint64_t c = ctx->hash[2]; |
| 256 | uint64_t d = ctx->hash[3]; |
| 257 | uint64_t e = ctx->hash[4]; |
| 258 | uint64_t f = ctx->hash[5]; |
| 259 | uint64_t g = ctx->hash[6]; |
| 260 | uint64_t h = ctx->hash[7]; |
Denis Vlasenko | 8ec8d5e | 2009-03-15 02:56:00 +0000 | [diff] [blame] | 261 | const uint64_t *words = (uint64_t*) ctx->wbuffer; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 262 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 263 | /* Operators defined in FIPS 180-2:4.1.2. */ |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 264 | #define Ch(x, y, z) ((x & y) ^ (~x & z)) |
| 265 | #define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z)) |
| 266 | #define S0(x) (rotr64(x, 28) ^ rotr64(x, 34) ^ rotr64(x, 39)) |
| 267 | #define S1(x) (rotr64(x, 14) ^ rotr64(x, 18) ^ rotr64(x, 41)) |
| 268 | #define R0(x) (rotr64(x, 1) ^ rotr64(x, 8) ^ (x >> 7)) |
| 269 | #define R1(x) (rotr64(x, 19) ^ rotr64(x, 61) ^ (x >> 6)) |
| 270 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 271 | /* Compute the message schedule according to FIPS 180-2:6.3.2 step 2. */ |
| 272 | for (t = 0; t < 16; ++t) { |
| 273 | W[t] = ntoh64(*words); |
| 274 | words++; |
| 275 | } |
| 276 | for (/*t = 16*/; t < 80; ++t) |
| 277 | W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16]; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 278 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 279 | /* The actual computation according to FIPS 180-2:6.3.2 step 3. */ |
| 280 | for (t = 0; t < 80; ++t) { |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 281 | uint64_t T1 = h + S1(e) + Ch(e, f, g) + sha_K[t] + W[t]; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 282 | uint64_t T2 = S0(a) + Maj(a, b, c); |
| 283 | h = g; |
| 284 | g = f; |
| 285 | f = e; |
| 286 | e = d + T1; |
| 287 | d = c; |
| 288 | c = b; |
| 289 | b = a; |
| 290 | a = T1 + T2; |
| 291 | } |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 292 | #undef Ch |
| 293 | #undef Maj |
| 294 | #undef S0 |
| 295 | #undef S1 |
| 296 | #undef R0 |
| 297 | #undef R1 |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 298 | /* Add the starting values of the context according to FIPS 180-2:6.3.2 |
| 299 | step 4. */ |
| 300 | ctx->hash[0] += a; |
| 301 | ctx->hash[1] += b; |
| 302 | ctx->hash[2] += c; |
| 303 | ctx->hash[3] += d; |
| 304 | ctx->hash[4] += e; |
| 305 | ctx->hash[5] += f; |
| 306 | ctx->hash[6] += g; |
| 307 | ctx->hash[7] += h; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 311 | void FAST_FUNC sha1_begin(sha1_ctx_t *ctx) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 312 | { |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 313 | ctx->hash[0] = 0x67452301; |
| 314 | ctx->hash[1] = 0xefcdab89; |
| 315 | ctx->hash[2] = 0x98badcfe; |
| 316 | ctx->hash[3] = 0x10325476; |
| 317 | ctx->hash[4] = 0xc3d2e1f0; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 318 | ctx->total64 = 0; |
| 319 | ctx->process_block = sha1_process_block64; |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 320 | } |
| 321 | |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 322 | static const uint32_t init256[] = { |
| 323 | 0x6a09e667, |
| 324 | 0xbb67ae85, |
| 325 | 0x3c6ef372, |
| 326 | 0xa54ff53a, |
| 327 | 0x510e527f, |
| 328 | 0x9b05688c, |
| 329 | 0x1f83d9ab, |
| 330 | 0x5be0cd19 |
| 331 | }; |
| 332 | static const uint32_t init512_lo[] = { |
| 333 | 0xf3bcc908, |
| 334 | 0x84caa73b, |
| 335 | 0xfe94f82b, |
| 336 | 0x5f1d36f1, |
| 337 | 0xade682d1, |
| 338 | 0x2b3e6c1f, |
| 339 | 0xfb41bd6b, |
| 340 | 0x137e2179 |
| 341 | }; |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 342 | |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 343 | /* Initialize structure containing state of computation. |
| 344 | (FIPS 180-2:5.3.2) */ |
| 345 | void FAST_FUNC sha256_begin(sha256_ctx_t *ctx) |
| 346 | { |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 347 | memcpy(ctx->hash, init256, sizeof(init256)); |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 348 | ctx->total64 = 0; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 349 | ctx->process_block = sha256_process_block64; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 350 | } |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 351 | |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 352 | /* Initialize structure containing state of computation. |
| 353 | (FIPS 180-2:5.3.3) */ |
| 354 | void FAST_FUNC sha512_begin(sha512_ctx_t *ctx) |
| 355 | { |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 356 | int i; |
| 357 | for (i = 0; i < 8; i++) |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 358 | ctx->hash[i] = ((uint64_t)(init256[i]) << 32) + init512_lo[i]; |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 359 | ctx->total64[0] = ctx->total64[1] = 0; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 363 | /* Used also for sha256 */ |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 364 | void FAST_FUNC sha1_hash(const void *buffer, size_t len, sha1_ctx_t *ctx) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 365 | { |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 366 | unsigned in_buf = ctx->total64 & 63; |
| 367 | unsigned add = 64 - in_buf; |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 368 | |
Denis Vlasenko | 98c87f7 | 2009-03-11 21:15:51 +0000 | [diff] [blame] | 369 | ctx->total64 += len; |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 370 | |
Denis Vlasenko | 6a5d9fa | 2009-03-12 15:39:11 +0000 | [diff] [blame] | 371 | while (len >= add) { /* transfer whole blocks while possible */ |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 372 | memcpy(ctx->wbuffer + in_buf, buffer, add); |
Denis Vlasenko | 6a5d9fa | 2009-03-12 15:39:11 +0000 | [diff] [blame] | 373 | buffer = (const char *)buffer + add; |
| 374 | len -= add; |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 375 | add = 64; |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 376 | in_buf = 0; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 377 | ctx->process_block(ctx); |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 378 | } |
| 379 | |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 380 | memcpy(ctx->wbuffer + in_buf, buffer, len); |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 381 | } |
| 382 | |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 383 | void FAST_FUNC sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) |
| 384 | { |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 385 | unsigned in_buf = ctx->total64[0] & 127; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 386 | unsigned add = 128 - in_buf; |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 387 | |
| 388 | /* First increment the byte count. FIPS 180-2 specifies the possible |
| 389 | length of the file up to 2^128 _bits_. |
| 390 | We compute the number of _bytes_ and convert to bits later. */ |
| 391 | ctx->total64[0] += len; |
| 392 | if (ctx->total64[0] < len) |
| 393 | ctx->total64[1]++; |
| 394 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 395 | while (len >= add) { /* transfer whole blocks while possible */ |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 396 | memcpy(ctx->wbuffer + in_buf, buffer, add); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 397 | buffer = (const char *)buffer + add; |
| 398 | len -= add; |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 399 | add = 128; |
| 400 | in_buf = 0; |
| 401 | sha512_process_block128(ctx); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 402 | } |
| 403 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 404 | memcpy(ctx->wbuffer + in_buf, buffer, len); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 408 | /* Used also for sha256 */ |
Denis Vlasenko | e9b9a19 | 2008-11-11 01:38:04 +0000 | [diff] [blame] | 409 | void FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx) |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 410 | { |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 411 | unsigned i, pad, in_buf; |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 412 | |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 413 | in_buf = ctx->total64 & 63; |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 414 | /* Pad the buffer to the next 64-byte boundary with 0x80,0,0,0... */ |
| 415 | ctx->wbuffer[in_buf++] = 0x80; |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 416 | |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 417 | /* This loop iterates either once or twice, no more, no less */ |
| 418 | while (1) { |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 419 | pad = 64 - in_buf; |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 420 | memset(ctx->wbuffer + in_buf, 0, pad); |
| 421 | in_buf = 0; |
| 422 | /* Do we have enough space for the length count? */ |
| 423 | if (pad >= 8) { |
| 424 | /* Store the 64-bit counter of bits in the buffer in BE format */ |
| 425 | uint64_t t = ctx->total64 << 3; |
| 426 | t = hton64(t); |
| 427 | /* wbuffer is suitably aligned for this */ |
Denis Vlasenko | 823f10b | 2009-03-15 04:56:51 +0000 | [diff] [blame] | 428 | *(uint64_t *) (&ctx->wbuffer[64 - 8]) = t; |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 429 | } |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 430 | ctx->process_block(ctx); |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 431 | if (pad >= 8) |
| 432 | break; |
Denis Vlasenko | 6a5d9fa | 2009-03-12 15:39:11 +0000 | [diff] [blame] | 433 | } |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 434 | |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 435 | in_buf = (ctx->process_block == sha1_process_block64) ? 5 : 8; |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 436 | /* This way we do not impose alignment constraints on resbuf: */ |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 437 | #if BB_LITTLE_ENDIAN |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 438 | for (i = 0; i < in_buf; ++i) |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 439 | ctx->hash[i] = htonl(ctx->hash[i]); |
| 440 | #endif |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 441 | memcpy(resbuf, ctx->hash, sizeof(ctx->hash[0]) * in_buf); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 442 | } |
| 443 | |
Denis Vlasenko | e9b9a19 | 2008-11-11 01:38:04 +0000 | [diff] [blame] | 444 | void FAST_FUNC sha512_end(void *resbuf, sha512_ctx_t *ctx) |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 445 | { |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 446 | unsigned i, pad, in_buf; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 447 | |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 448 | in_buf = ctx->total64[0] & 127; |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 449 | /* Pad the buffer to the next 128-byte boundary with 0x80,0,0,0... |
| 450 | * (FIPS 180-2:5.1.2) |
| 451 | */ |
| 452 | ctx->wbuffer[in_buf++] = 0x80; |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 453 | |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 454 | while (1) { |
| 455 | pad = 128 - in_buf; |
| 456 | memset(ctx->wbuffer + in_buf, 0, pad); |
| 457 | in_buf = 0; |
| 458 | if (pad >= 16) { |
| 459 | /* Store the 128-bit counter of bits in the buffer in BE format */ |
| 460 | uint64_t t; |
| 461 | t = ctx->total64[0] << 3; |
| 462 | t = hton64(t); |
| 463 | *(uint64_t *) (&ctx->wbuffer[128 - 8]) = t; |
| 464 | t = (ctx->total64[1] << 3) | (ctx->total64[0] >> 61); |
| 465 | t = hton64(t); |
| 466 | *(uint64_t *) (&ctx->wbuffer[128 - 16]) = t; |
| 467 | } |
Denis Vlasenko | e9afc46 | 2009-03-15 02:28:05 +0000 | [diff] [blame] | 468 | sha512_process_block128(ctx); |
Denis Vlasenko | c8329c9 | 2009-03-12 19:06:18 +0000 | [diff] [blame] | 469 | if (pad >= 16) |
| 470 | break; |
| 471 | } |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 472 | |
Denis Vlasenko | cd2cd31 | 2009-03-12 15:40:27 +0000 | [diff] [blame] | 473 | #if BB_LITTLE_ENDIAN |
| 474 | for (i = 0; i < ARRAY_SIZE(ctx->hash); ++i) |
| 475 | ctx->hash[i] = hton64(ctx->hash[i]); |
| 476 | #endif |
| 477 | memcpy(resbuf, ctx->hash, sizeof(ctx->hash)); |
Denis Vlasenko | 56dceb9 | 2008-11-10 13:32:50 +0000 | [diff] [blame] | 478 | } |