| 1 | /* |
| 2 | * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> |
| 3 | * Copyright (C) 2009 Konstantin Shishkov |
| 4 | * Copyright (C) 2013 James Almer |
| 5 | * based on BSD-licensed SHA-2 code by Aaron D. Gifford |
| 6 | * |
| 7 | * This file is part of FFmpeg. |
| 8 | * |
| 9 | * FFmpeg is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2.1 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * FFmpeg is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with FFmpeg; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | #include <string.h> |
| 25 | |
| 26 | #include "attributes.h" |
| 27 | #include "avutil.h" |
| 28 | #include "bswap.h" |
| 29 | #include "sha512.h" |
| 30 | #include "intreadwrite.h" |
| 31 | #include "mem.h" |
| 32 | |
| 33 | /** hash context */ |
| 34 | typedef struct AVSHA512 { |
| 35 | uint8_t digest_len; ///< digest length in 64-bit words |
| 36 | uint64_t count; ///< number of bytes in buffer |
| 37 | uint8_t buffer[128]; ///< 1024-bit buffer of input values used in hash updating |
| 38 | uint64_t state[8]; ///< current hash value |
| 39 | } AVSHA512; |
| 40 | |
| 41 | const int av_sha512_size = sizeof(AVSHA512); |
| 42 | |
| 43 | struct AVSHA512 *av_sha512_alloc(void) |
| 44 | { |
| 45 | return av_mallocz(sizeof(struct AVSHA512)); |
| 46 | } |
| 47 | |
| 48 | static const uint64_t K512[80] = { |
| 49 | UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), |
| 50 | UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc), |
| 51 | UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), |
| 52 | UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118), |
| 53 | UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), |
| 54 | UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2), |
| 55 | UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), |
| 56 | UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694), |
| 57 | UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), |
| 58 | UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65), |
| 59 | UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), |
| 60 | UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5), |
| 61 | UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), |
| 62 | UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4), |
| 63 | UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), |
| 64 | UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70), |
| 65 | UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), |
| 66 | UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df), |
| 67 | UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), |
| 68 | UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b), |
| 69 | UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001), |
| 70 | UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30), |
| 71 | UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), |
| 72 | UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8), |
| 73 | UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), |
| 74 | UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8), |
| 75 | UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), |
| 76 | UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3), |
| 77 | UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), |
| 78 | UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec), |
| 79 | UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), |
| 80 | UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b), |
| 81 | UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), |
| 82 | UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178), |
| 83 | UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), |
| 84 | UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b), |
| 85 | UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), |
| 86 | UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c), |
| 87 | UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), |
| 88 | UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817), |
| 89 | }; |
| 90 | |
| 91 | #define ror(value, bits) (((value) >> (bits)) | ((value) << (64 - (bits)))) |
| 92 | |
| 93 | #define Ch(x,y,z) (((x) & ((y) ^ (z))) ^ (z)) |
| 94 | #define Maj(z,y,x) ((((x) | (y)) & (z)) | ((x) & (y))) |
| 95 | |
| 96 | #define Sigma0_512(x) (ror((x), 28) ^ ror((x), 34) ^ ror((x), 39)) |
| 97 | #define Sigma1_512(x) (ror((x), 14) ^ ror((x), 18) ^ ror((x), 41)) |
| 98 | #define sigma0_512(x) (ror((x), 1) ^ ror((x), 8) ^ ((x) >> 7)) |
| 99 | #define sigma1_512(x) (ror((x), 19) ^ ror((x), 61) ^ ((x) >> 6)) |
| 100 | |
| 101 | #define blk0(i) (block[i] = AV_RB64(buffer + 8 * (i))) |
| 102 | #define blk(i) (block[i] = block[i - 16] + sigma0_512(block[i - 15]) + \ |
| 103 | sigma1_512(block[i - 2]) + block[i - 7]) |
| 104 | |
| 105 | #define ROUND512(a,b,c,d,e,f,g,h) \ |
| 106 | T1 += (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[i]; \ |
| 107 | (d) += T1; \ |
| 108 | (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \ |
| 109 | i++ |
| 110 | |
| 111 | #define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \ |
| 112 | T1 = blk0(i); \ |
| 113 | ROUND512(a,b,c,d,e,f,g,h) |
| 114 | |
| 115 | #define ROUND512_16_TO_80(a,b,c,d,e,f,g,h) \ |
| 116 | T1 = blk(i); \ |
| 117 | ROUND512(a,b,c,d,e,f,g,h) |
| 118 | |
| 119 | static void sha512_transform(uint64_t *state, const uint8_t buffer[128]) |
| 120 | { |
| 121 | uint64_t a, b, c, d, e, f, g, h; |
| 122 | uint64_t block[80]; |
| 123 | uint64_t T1; |
| 124 | int i; |
| 125 | |
| 126 | a = state[0]; |
| 127 | b = state[1]; |
| 128 | c = state[2]; |
| 129 | d = state[3]; |
| 130 | e = state[4]; |
| 131 | f = state[5]; |
| 132 | g = state[6]; |
| 133 | h = state[7]; |
| 134 | #if CONFIG_SMALL |
| 135 | for (i = 0; i < 80; i++) { |
| 136 | uint64_t T2; |
| 137 | if (i < 16) |
| 138 | T1 = blk0(i); |
| 139 | else |
| 140 | T1 = blk(i); |
| 141 | T1 += h + Sigma1_512(e) + Ch(e, f, g) + K512[i]; |
| 142 | T2 = Sigma0_512(a) + Maj(a, b, c); |
| 143 | h = g; |
| 144 | g = f; |
| 145 | f = e; |
| 146 | e = d + T1; |
| 147 | d = c; |
| 148 | c = b; |
| 149 | b = a; |
| 150 | a = T1 + T2; |
| 151 | } |
| 152 | #else |
| 153 | |
| 154 | #define R512_0 \ |
| 155 | ROUND512_0_TO_15(a, b, c, d, e, f, g, h); \ |
| 156 | ROUND512_0_TO_15(h, a, b, c, d, e, f, g); \ |
| 157 | ROUND512_0_TO_15(g, h, a, b, c, d, e, f); \ |
| 158 | ROUND512_0_TO_15(f, g, h, a, b, c, d, e); \ |
| 159 | ROUND512_0_TO_15(e, f, g, h, a, b, c, d); \ |
| 160 | ROUND512_0_TO_15(d, e, f, g, h, a, b, c); \ |
| 161 | ROUND512_0_TO_15(c, d, e, f, g, h, a, b); \ |
| 162 | ROUND512_0_TO_15(b, c, d, e, f, g, h, a) |
| 163 | |
| 164 | i = 0; |
| 165 | R512_0; R512_0; |
| 166 | |
| 167 | #define R512_16 \ |
| 168 | ROUND512_16_TO_80(a, b, c, d, e, f, g, h); \ |
| 169 | ROUND512_16_TO_80(h, a, b, c, d, e, f, g); \ |
| 170 | ROUND512_16_TO_80(g, h, a, b, c, d, e, f); \ |
| 171 | ROUND512_16_TO_80(f, g, h, a, b, c, d, e); \ |
| 172 | ROUND512_16_TO_80(e, f, g, h, a, b, c, d); \ |
| 173 | ROUND512_16_TO_80(d, e, f, g, h, a, b, c); \ |
| 174 | ROUND512_16_TO_80(c, d, e, f, g, h, a, b); \ |
| 175 | ROUND512_16_TO_80(b, c, d, e, f, g, h, a) |
| 176 | |
| 177 | R512_16; R512_16; R512_16; R512_16; |
| 178 | R512_16; R512_16; R512_16; R512_16; |
| 179 | #endif |
| 180 | state[0] += a; |
| 181 | state[1] += b; |
| 182 | state[2] += c; |
| 183 | state[3] += d; |
| 184 | state[4] += e; |
| 185 | state[5] += f; |
| 186 | state[6] += g; |
| 187 | state[7] += h; |
| 188 | } |
| 189 | |
| 190 | |
| 191 | av_cold int av_sha512_init(AVSHA512 *ctx, int bits) |
| 192 | { |
| 193 | ctx->digest_len = bits >> 6; |
| 194 | switch (bits) { |
| 195 | case 224: // SHA-512/224 |
| 196 | ctx->state[0] = UINT64_C(0x8C3D37C819544DA2); |
| 197 | ctx->state[1] = UINT64_C(0x73E1996689DCD4D6); |
| 198 | ctx->state[2] = UINT64_C(0x1DFAB7AE32FF9C82); |
| 199 | ctx->state[3] = UINT64_C(0x679DD514582F9FCF); |
| 200 | ctx->state[4] = UINT64_C(0x0F6D2B697BD44DA8); |
| 201 | ctx->state[5] = UINT64_C(0x77E36F7304C48942); |
| 202 | ctx->state[6] = UINT64_C(0x3F9D85A86A1D36C8); |
| 203 | ctx->state[7] = UINT64_C(0x1112E6AD91D692A1); |
| 204 | break; |
| 205 | case 256: // SHA-512/256 |
| 206 | ctx->state[0] = UINT64_C(0x22312194FC2BF72C); |
| 207 | ctx->state[1] = UINT64_C(0x9F555FA3C84C64C2); |
| 208 | ctx->state[2] = UINT64_C(0x2393B86B6F53B151); |
| 209 | ctx->state[3] = UINT64_C(0x963877195940EABD); |
| 210 | ctx->state[4] = UINT64_C(0x96283EE2A88EFFE3); |
| 211 | ctx->state[5] = UINT64_C(0xBE5E1E2553863992); |
| 212 | ctx->state[6] = UINT64_C(0x2B0199FC2C85B8AA); |
| 213 | ctx->state[7] = UINT64_C(0x0EB72DDC81C52CA2); |
| 214 | break; |
| 215 | case 384: // SHA-384 |
| 216 | ctx->state[0] = UINT64_C(0xCBBB9D5DC1059ED8); |
| 217 | ctx->state[1] = UINT64_C(0x629A292A367CD507); |
| 218 | ctx->state[2] = UINT64_C(0x9159015A3070DD17); |
| 219 | ctx->state[3] = UINT64_C(0x152FECD8F70E5939); |
| 220 | ctx->state[4] = UINT64_C(0x67332667FFC00B31); |
| 221 | ctx->state[5] = UINT64_C(0x8EB44A8768581511); |
| 222 | ctx->state[6] = UINT64_C(0xDB0C2E0D64F98FA7); |
| 223 | ctx->state[7] = UINT64_C(0x47B5481DBEFA4FA4); |
| 224 | break; |
| 225 | case 512: // SHA-512 |
| 226 | ctx->state[0] = UINT64_C(0x6A09E667F3BCC908); |
| 227 | ctx->state[1] = UINT64_C(0xBB67AE8584CAA73B); |
| 228 | ctx->state[2] = UINT64_C(0x3C6EF372FE94F82B); |
| 229 | ctx->state[3] = UINT64_C(0xA54FF53A5F1D36F1); |
| 230 | ctx->state[4] = UINT64_C(0x510E527FADE682D1); |
| 231 | ctx->state[5] = UINT64_C(0x9B05688C2B3E6C1F); |
| 232 | ctx->state[6] = UINT64_C(0x1F83D9ABFB41BD6B); |
| 233 | ctx->state[7] = UINT64_C(0x5BE0CD19137E2179); |
| 234 | break; |
| 235 | default: |
| 236 | return -1; |
| 237 | } |
| 238 | ctx->count = 0; |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | void av_sha512_update(AVSHA512* ctx, const uint8_t* data, unsigned int len) |
| 243 | { |
| 244 | unsigned int i, j; |
| 245 | |
| 246 | j = ctx->count & 127; |
| 247 | ctx->count += len; |
| 248 | #if CONFIG_SMALL |
| 249 | for (i = 0; i < len; i++) { |
| 250 | ctx->buffer[j++] = data[i]; |
| 251 | if (128 == j) { |
| 252 | sha512_transform(ctx->state, ctx->buffer); |
| 253 | j = 0; |
| 254 | } |
| 255 | } |
| 256 | #else |
| 257 | if ((j + len) > 127) { |
| 258 | memcpy(&ctx->buffer[j], data, (i = 128 - j)); |
| 259 | sha512_transform(ctx->state, ctx->buffer); |
| 260 | for (; i + 127 < len; i += 128) |
| 261 | sha512_transform(ctx->state, &data[i]); |
| 262 | j = 0; |
| 263 | } else |
| 264 | i = 0; |
| 265 | memcpy(&ctx->buffer[j], &data[i], len - i); |
| 266 | #endif |
| 267 | } |
| 268 | |
| 269 | void av_sha512_final(AVSHA512* ctx, uint8_t *digest) |
| 270 | { |
| 271 | uint64_t i = 0; |
| 272 | uint64_t finalcount = av_be2ne64(ctx->count << 3); |
| 273 | |
| 274 | av_sha512_update(ctx, "\200", 1); |
| 275 | while ((ctx->count & 127) != 112) |
| 276 | av_sha512_update(ctx, "", 1); |
| 277 | av_sha512_update(ctx, (uint8_t *)&i, 8); |
| 278 | av_sha512_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */ |
| 279 | for (i = 0; i < ctx->digest_len; i++) |
| 280 | AV_WB64(digest + i*8, ctx->state[i]); |
| 281 | if (ctx->digest_len & 1) /* SHA512/224 is 28 bytes, and is not divisible by 8. */ |
| 282 | AV_WB32(digest + i*8, ctx->state[i] >> 32); |
| 283 | } |
| 284 | |
| 285 | #ifdef TEST |
| 286 | #include <stdio.h> |
| 287 | |
| 288 | int main(void) |
| 289 | { |
| 290 | int i, j, k; |
| 291 | AVSHA512 ctx; |
| 292 | unsigned char digest[64]; |
| 293 | static const int lengths[4] = { 224, 256, 384, 512 }; |
| 294 | |
| 295 | for (j = 0; j < 4; j++) { |
| 296 | if (j < 2) printf("Testing SHA-512/%d\n", lengths[j]); |
| 297 | else printf("Testing SHA-%d\n", lengths[j]); |
| 298 | for (k = 0; k < 3; k++) { |
| 299 | av_sha512_init(&ctx, lengths[j]); |
| 300 | if (k == 0) |
| 301 | av_sha512_update(&ctx, "abc", 3); |
| 302 | else if (k == 1) |
| 303 | av_sha512_update(&ctx, "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn" |
| 304 | "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", 112); |
| 305 | else |
| 306 | for (i = 0; i < 1000*1000; i++) |
| 307 | av_sha512_update(&ctx, "a", 1); |
| 308 | av_sha512_final(&ctx, digest); |
| 309 | for (i = 0; i < lengths[j] >> 3; i++) |
| 310 | printf("%02X", digest[i]); |
| 311 | putchar('\n'); |
| 312 | } |
| 313 | switch (j) { //test vectors (from FIPS PUB 180-4 Apendix A) |
| 314 | case 0: |
| 315 | printf("4634270f 707b6a54 daae7530 460842e2 0e37ed26 5ceee9a4 3e8924aa\n" |
| 316 | "23fec5bb 94d60b23 30819264 0b0c4533 35d66473 4fe40e72 68674af9\n" |
| 317 | "37ab331d 76f0d36d e422bd0e deb22a28 accd487b 7a8453ae 965dd287\n"); |
| 318 | break; |
| 319 | case 1: |
| 320 | printf("53048e26 81941ef9 9b2e29b7 6b4c7dab e4c2d0c6 34fc6d46 e0e2f131 07e7af23\n" |
| 321 | "3928e184 fb8690f8 40da3988 121d31be 65cb9d3e f83ee614 6feac861 e19b563a\n" |
| 322 | "9a59a052 930187a9 7038cae6 92f30708 aa649192 3ef51943 94dc68d5 6c74fb21\n"); |
| 323 | break; |
| 324 | case 2: |
| 325 | printf("cb00753f 45a35e8b b5a03d69 9ac65007 272c32ab 0eded163 " |
| 326 | "1a8b605a 43ff5bed 8086072b a1e7cc23 58baeca1 34c825a7\n" |
| 327 | "09330c33 f71147e8 3d192fc7 82cd1b47 53111b17 3b3b05d2 " |
| 328 | "2fa08086 e3b0f712 fcc7c71a 557e2db9 66c3e9fa 91746039\n" |
| 329 | "9d0e1809 716474cb 086e834e 310a4a1c ed149e9c 00f24852 " |
| 330 | "7972cec5 704c2a5b 07b8b3dc 38ecc4eb ae97ddd8 7f3d8985\n"); |
| 331 | break; |
| 332 | case 3: |
| 333 | printf("ddaf35a1 93617aba cc417349 ae204131 12e6fa4e 89a97ea2 0a9eeee6 4b55d39a " |
| 334 | "2192992a 274fc1a8 36ba3c23 a3feebbd 454d4423 643ce80e 2a9ac94f a54ca49f\n" |
| 335 | "8e959b75 dae313da 8cf4f728 14fc143f 8f7779c6 eb9f7fa1 7299aead b6889018 " |
| 336 | "501d289e 4900f7e4 331b99de c4b5433a c7d329ee b6dd2654 5e96e55b 874be909\n" |
| 337 | "e718483d 0ce76964 4e2e42c7 bc15b463 8e1f98b1 3b204428 5632a803 afa973eb " |
| 338 | "de0ff244 877ea60a 4cb0432c e577c31b eb009c5c 2c49aa2e 4eadb217 ad8cc09b\n"); |
| 339 | break; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | return 0; |
| 344 | } |
| 345 | #endif |