| 1 | /* |
| 2 | * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> |
| 3 | * Copyright (C) 2013 James Almer |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include <string.h> |
| 23 | |
| 24 | #include "attributes.h" |
| 25 | #include "avutil.h" |
| 26 | #include "bswap.h" |
| 27 | #include "intreadwrite.h" |
| 28 | #include "ripemd.h" |
| 29 | #include "mem.h" |
| 30 | |
| 31 | /** hash context */ |
| 32 | typedef struct AVRIPEMD { |
| 33 | uint8_t digest_len; ///< digest length in 32-bit words |
| 34 | uint64_t count; ///< number of bytes in buffer |
| 35 | uint8_t buffer[64]; ///< 512-bit buffer of input values used in hash updating |
| 36 | uint32_t state[10]; ///< current hash value |
| 37 | uint8_t ext; ///< extension (0 for 128 and 160, 1 for 256 and 320) |
| 38 | /** function used to update hash for 512-bit input block */ |
| 39 | void (*transform)(uint32_t *state, const uint8_t buffer[64], int ext); |
| 40 | } AVRIPEMD; |
| 41 | |
| 42 | const int av_ripemd_size = sizeof(AVRIPEMD); |
| 43 | |
| 44 | struct AVRIPEMD *av_ripemd_alloc(void) |
| 45 | { |
| 46 | return av_mallocz(sizeof(struct AVRIPEMD)); |
| 47 | } |
| 48 | |
| 49 | static const uint32_t KA[4] = { |
| 50 | 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e |
| 51 | }; |
| 52 | |
| 53 | static const uint32_t KB[4] = { |
| 54 | 0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9 |
| 55 | }; |
| 56 | |
| 57 | static const int ROTA[80] = { |
| 58 | 11, 14, 15, 12, 5, 8, 7 , 9, 11, 13, 14, 15, 6, 7, 9, 8, |
| 59 | 7 , 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, |
| 60 | 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, |
| 61 | 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, |
| 62 | 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 |
| 63 | }; |
| 64 | |
| 65 | static const int ROTB[80] = { |
| 66 | 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, |
| 67 | 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, |
| 68 | 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, |
| 69 | 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, |
| 70 | 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 |
| 71 | }; |
| 72 | |
| 73 | static const int WA[80] = { |
| 74 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 75 | 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, |
| 76 | 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, |
| 77 | 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, |
| 78 | 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 |
| 79 | }; |
| 80 | |
| 81 | static const int WB[80] = { |
| 82 | 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, |
| 83 | 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, |
| 84 | 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, |
| 85 | 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, |
| 86 | 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 |
| 87 | }; |
| 88 | |
| 89 | #define rol(value, bits) ((value << bits) | (value >> (32 - bits))) |
| 90 | |
| 91 | #define SWAP(a,b) if (ext) { t = a; a = b; b = t; } |
| 92 | |
| 93 | #define ROUND128_0_TO_15(a,b,c,d,e,f,g,h) \ |
| 94 | a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]); \ |
| 95 | e = rol(e + ((((f ^ g) & h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]); \ |
| 96 | n++ |
| 97 | |
| 98 | #define ROUND128_16_TO_31(a,b,c,d,e,f,g,h) \ |
| 99 | a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]); \ |
| 100 | e = rol(e + (((~g | f) ^ h) + block[WB[n]] + KB[1]), ROTB[n]); \ |
| 101 | n++ |
| 102 | |
| 103 | #define ROUND128_32_TO_47(a,b,c,d,e,f,g,h) \ |
| 104 | a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]); \ |
| 105 | e = rol(e + ((((g ^ h) & f) ^ h) + block[WB[n]] + KB[2]), ROTB[n]); \ |
| 106 | n++ |
| 107 | |
| 108 | #define ROUND128_48_TO_63(a,b,c,d,e,f,g,h) \ |
| 109 | a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]); \ |
| 110 | e = rol(e + (( f ^ g ^ h) + block[WB[n]]), ROTB[n]); \ |
| 111 | n++ |
| 112 | |
| 113 | static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64], int ext) |
| 114 | { |
| 115 | uint32_t a, b, c, d, e, f, g, h, t; |
| 116 | uint32_t block[16]; |
| 117 | int n; |
| 118 | |
| 119 | if (ext) { |
| 120 | a = state[0]; b = state[1]; c = state[2]; d = state[3]; |
| 121 | e = state[4]; f = state[5]; g = state[6]; h = state[7]; |
| 122 | } else { |
| 123 | a = e = state[0]; |
| 124 | b = f = state[1]; |
| 125 | c = g = state[2]; |
| 126 | d = h = state[3]; |
| 127 | } |
| 128 | |
| 129 | for (n = 0; n < 16; n++) |
| 130 | block[n] = AV_RL32(buffer + 4 * n); |
| 131 | n = 0; |
| 132 | |
| 133 | #if CONFIG_SMALL |
| 134 | for (; n < 16;) { |
| 135 | ROUND128_0_TO_15(a,b,c,d,e,f,g,h); |
| 136 | t = d; d = c; c = b; b = a; a = t; |
| 137 | t = h; h = g; g = f; f = e; e = t; |
| 138 | } |
| 139 | SWAP(a,e) |
| 140 | |
| 141 | for (; n < 32;) { |
| 142 | ROUND128_16_TO_31(a,b,c,d,e,f,g,h); |
| 143 | t = d; d = c; c = b; b = a; a = t; |
| 144 | t = h; h = g; g = f; f = e; e = t; |
| 145 | } |
| 146 | SWAP(b,f) |
| 147 | |
| 148 | for (; n < 48;) { |
| 149 | ROUND128_32_TO_47(a,b,c,d,e,f,g,h); |
| 150 | t = d; d = c; c = b; b = a; a = t; |
| 151 | t = h; h = g; g = f; f = e; e = t; |
| 152 | } |
| 153 | SWAP(c,g) |
| 154 | |
| 155 | for (; n < 64;) { |
| 156 | ROUND128_48_TO_63(a,b,c,d,e,f,g,h); |
| 157 | t = d; d = c; c = b; b = a; a = t; |
| 158 | t = h; h = g; g = f; f = e; e = t; |
| 159 | } |
| 160 | SWAP(d,h) |
| 161 | #else |
| 162 | |
| 163 | #define R128_0 \ |
| 164 | ROUND128_0_TO_15(a,b,c,d,e,f,g,h); \ |
| 165 | ROUND128_0_TO_15(d,a,b,c,h,e,f,g); \ |
| 166 | ROUND128_0_TO_15(c,d,a,b,g,h,e,f); \ |
| 167 | ROUND128_0_TO_15(b,c,d,a,f,g,h,e) |
| 168 | |
| 169 | R128_0; R128_0; R128_0; R128_0; |
| 170 | SWAP(a,e) |
| 171 | |
| 172 | #define R128_16 \ |
| 173 | ROUND128_16_TO_31(a,b,c,d,e,f,g,h); \ |
| 174 | ROUND128_16_TO_31(d,a,b,c,h,e,f,g); \ |
| 175 | ROUND128_16_TO_31(c,d,a,b,g,h,e,f); \ |
| 176 | ROUND128_16_TO_31(b,c,d,a,f,g,h,e) |
| 177 | |
| 178 | R128_16; R128_16; R128_16; R128_16; |
| 179 | SWAP(b,f) |
| 180 | |
| 181 | #define R128_32 \ |
| 182 | ROUND128_32_TO_47(a,b,c,d,e,f,g,h); \ |
| 183 | ROUND128_32_TO_47(d,a,b,c,h,e,f,g); \ |
| 184 | ROUND128_32_TO_47(c,d,a,b,g,h,e,f); \ |
| 185 | ROUND128_32_TO_47(b,c,d,a,f,g,h,e) |
| 186 | |
| 187 | R128_32; R128_32; R128_32; R128_32; |
| 188 | SWAP(c,g) |
| 189 | |
| 190 | #define R128_48 \ |
| 191 | ROUND128_48_TO_63(a,b,c,d,e,f,g,h); \ |
| 192 | ROUND128_48_TO_63(d,a,b,c,h,e,f,g); \ |
| 193 | ROUND128_48_TO_63(c,d,a,b,g,h,e,f); \ |
| 194 | ROUND128_48_TO_63(b,c,d,a,f,g,h,e) |
| 195 | |
| 196 | R128_48; R128_48; R128_48; R128_48; |
| 197 | SWAP(d,h) |
| 198 | #endif |
| 199 | |
| 200 | if (ext) { |
| 201 | state[0] += a; state[1] += b; state[2] += c; state[3] += d; |
| 202 | state[4] += e; state[5] += f; state[6] += g; state[7] += h; |
| 203 | } else { |
| 204 | h += c + state[1]; |
| 205 | state[1] = state[2] + d + e; |
| 206 | state[2] = state[3] + a + f; |
| 207 | state[3] = state[0] + b + g; |
| 208 | state[0] = h; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | #define ROTATE(x,y) \ |
| 213 | x = rol(x, 10); \ |
| 214 | y = rol(y, 10); \ |
| 215 | n++ |
| 216 | |
| 217 | #define ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j) \ |
| 218 | a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]) + e; \ |
| 219 | f = rol(f + (((~i | h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]) + j; \ |
| 220 | ROTATE(c,h) |
| 221 | |
| 222 | #define ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j) \ |
| 223 | a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]) + e; \ |
| 224 | f = rol(f + ((((g ^ h) & i) ^ h) + block[WB[n]] + KB[1]), ROTB[n]) + j; \ |
| 225 | ROTATE(c,h) |
| 226 | |
| 227 | #define ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j) \ |
| 228 | a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]) + e; \ |
| 229 | f = rol(f + (((~h | g) ^ i) + block[WB[n]] + KB[2]), ROTB[n]) + j; \ |
| 230 | ROTATE(c,h) |
| 231 | |
| 232 | #define ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j) \ |
| 233 | a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]) + e; \ |
| 234 | f = rol(f + ((((h ^ i) & g) ^ i) + block[WB[n]] + KB[3]), ROTB[n]) + j; \ |
| 235 | ROTATE(c,h) |
| 236 | |
| 237 | #define ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j) \ |
| 238 | a = rol(a + (((~d | c) ^ b) + block[WA[n]] + KA[3]), ROTA[n]) + e; \ |
| 239 | f = rol(f + (( g ^ h ^ i) + block[WB[n]]), ROTB[n]) + j; \ |
| 240 | ROTATE(c,h) |
| 241 | |
| 242 | static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64], int ext) |
| 243 | { |
| 244 | uint32_t a, b, c, d, e, f, g, h, i, j, t; |
| 245 | uint32_t block[16]; |
| 246 | int n; |
| 247 | |
| 248 | if (ext) { |
| 249 | a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4]; |
| 250 | f = state[5]; g = state[6]; h = state[7]; i = state[8]; j = state[9]; |
| 251 | } else { |
| 252 | a = f = state[0]; |
| 253 | b = g = state[1]; |
| 254 | c = h = state[2]; |
| 255 | d = i = state[3]; |
| 256 | e = j = state[4]; |
| 257 | } |
| 258 | |
| 259 | for (n = 0; n < 16; n++) |
| 260 | block[n] = AV_RL32(buffer + 4 * n); |
| 261 | n = 0; |
| 262 | |
| 263 | #if CONFIG_SMALL |
| 264 | for (; n < 16;) { |
| 265 | ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); |
| 266 | t = e; e = d; d = c; c = b; b = a; a = t; |
| 267 | t = j; j = i; i = h; h = g; g = f; f = t; |
| 268 | } |
| 269 | SWAP(b,g) |
| 270 | |
| 271 | for (; n < 32;) { |
| 272 | ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j); |
| 273 | t = e; e = d; d = c; c = b; b = a; a = t; |
| 274 | t = j; j = i; i = h; h = g; g = f; f = t; |
| 275 | } |
| 276 | SWAP(d,i) |
| 277 | |
| 278 | for (; n < 48;) { |
| 279 | ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); |
| 280 | t = e; e = d; d = c; c = b; b = a; a = t; |
| 281 | t = j; j = i; i = h; h = g; g = f; f = t; |
| 282 | } |
| 283 | SWAP(a,f) |
| 284 | |
| 285 | for (; n < 64;) { |
| 286 | ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); |
| 287 | t = e; e = d; d = c; c = b; b = a; a = t; |
| 288 | t = j; j = i; i = h; h = g; g = f; f = t; |
| 289 | } |
| 290 | SWAP(c,h) |
| 291 | |
| 292 | for (; n < 80;) { |
| 293 | ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); |
| 294 | t = e; e = d; d = c; c = b; b = a; a = t; |
| 295 | t = j; j = i; i = h; h = g; g = f; f = t; |
| 296 | } |
| 297 | SWAP(e,j) |
| 298 | #else |
| 299 | |
| 300 | #define R160_0 \ |
| 301 | ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); \ |
| 302 | ROUND160_0_TO_15(e,a,b,c,d,j,f,g,h,i); \ |
| 303 | ROUND160_0_TO_15(d,e,a,b,c,i,j,f,g,h); \ |
| 304 | ROUND160_0_TO_15(c,d,e,a,b,h,i,j,f,g); \ |
| 305 | ROUND160_0_TO_15(b,c,d,e,a,g,h,i,j,f) |
| 306 | |
| 307 | R160_0; R160_0; R160_0; |
| 308 | ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); |
| 309 | SWAP(a,f) |
| 310 | |
| 311 | #define R160_16 \ |
| 312 | ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); \ |
| 313 | ROUND160_16_TO_31(d,e,a,b,c,i,j,f,g,h); \ |
| 314 | ROUND160_16_TO_31(c,d,e,a,b,h,i,j,f,g); \ |
| 315 | ROUND160_16_TO_31(b,c,d,e,a,g,h,i,j,f); \ |
| 316 | ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j) |
| 317 | |
| 318 | R160_16; R160_16; R160_16; |
| 319 | ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); |
| 320 | SWAP(b,g) |
| 321 | |
| 322 | #define R160_32 \ |
| 323 | ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); \ |
| 324 | ROUND160_32_TO_47(c,d,e,a,b,h,i,j,f,g); \ |
| 325 | ROUND160_32_TO_47(b,c,d,e,a,g,h,i,j,f); \ |
| 326 | ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); \ |
| 327 | ROUND160_32_TO_47(e,a,b,c,d,j,f,g,h,i) |
| 328 | |
| 329 | R160_32; R160_32; R160_32; |
| 330 | ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); |
| 331 | SWAP(c,h) |
| 332 | |
| 333 | #define R160_48 \ |
| 334 | ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \ |
| 335 | ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \ |
| 336 | ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \ |
| 337 | ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \ |
| 338 | ROUND160_48_TO_63(d,e,a,b,c,i,j,f,g,h) |
| 339 | |
| 340 | R160_48; R160_48; R160_48; |
| 341 | ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); |
| 342 | SWAP(d,i) |
| 343 | |
| 344 | #define R160_64 \ |
| 345 | ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \ |
| 346 | ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \ |
| 347 | ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \ |
| 348 | ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \ |
| 349 | ROUND160_64_TO_79(c,d,e,a,b,h,i,j,f,g) |
| 350 | |
| 351 | R160_64; R160_64; R160_64; |
| 352 | ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); |
| 353 | SWAP(e,j) |
| 354 | #endif |
| 355 | |
| 356 | if (ext) { |
| 357 | state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e; |
| 358 | state[5] += f; state[6] += g; state[7] += h; state[8] += i; state[9] += j; |
| 359 | } else { |
| 360 | i += c + state[1]; |
| 361 | state[1] = state[2] + d + j; |
| 362 | state[2] = state[3] + e + f; |
| 363 | state[3] = state[4] + a + g; |
| 364 | state[4] = state[0] + b + h; |
| 365 | state[0] = i; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits) |
| 370 | { |
| 371 | ctx->digest_len = bits >> 5; |
| 372 | switch (bits) { |
| 373 | case 128: // RIPEMD-128 |
| 374 | ctx->state[0] = 0x67452301; |
| 375 | ctx->state[1] = 0xEFCDAB89; |
| 376 | ctx->state[2] = 0x98BADCFE; |
| 377 | ctx->state[3] = 0x10325476; |
| 378 | ctx->transform = ripemd128_transform; |
| 379 | ctx->ext = 0; |
| 380 | break; |
| 381 | case 160: // RIPEMD-160 |
| 382 | ctx->state[0] = 0x67452301; |
| 383 | ctx->state[1] = 0xEFCDAB89; |
| 384 | ctx->state[2] = 0x98BADCFE; |
| 385 | ctx->state[3] = 0x10325476; |
| 386 | ctx->state[4] = 0xC3D2E1F0; |
| 387 | ctx->transform = ripemd160_transform; |
| 388 | ctx->ext = 0; |
| 389 | break; |
| 390 | case 256: // RIPEMD-256 |
| 391 | ctx->state[0] = 0x67452301; |
| 392 | ctx->state[1] = 0xEFCDAB89; |
| 393 | ctx->state[2] = 0x98BADCFE; |
| 394 | ctx->state[3] = 0x10325476; |
| 395 | ctx->state[4] = 0x76543210; |
| 396 | ctx->state[5] = 0xFEDCBA98; |
| 397 | ctx->state[6] = 0x89ABCDEF; |
| 398 | ctx->state[7] = 0x01234567; |
| 399 | ctx->transform = ripemd128_transform; |
| 400 | ctx->ext = 1; |
| 401 | break; |
| 402 | case 320: // RIPEMD-320 |
| 403 | ctx->state[0] = 0x67452301; |
| 404 | ctx->state[1] = 0xEFCDAB89; |
| 405 | ctx->state[2] = 0x98BADCFE; |
| 406 | ctx->state[3] = 0x10325476; |
| 407 | ctx->state[4] = 0xC3D2E1F0; |
| 408 | ctx->state[5] = 0x76543210; |
| 409 | ctx->state[6] = 0xFEDCBA98; |
| 410 | ctx->state[7] = 0x89ABCDEF; |
| 411 | ctx->state[8] = 0x01234567; |
| 412 | ctx->state[9] = 0x3C2D1E0F; |
| 413 | ctx->transform = ripemd160_transform; |
| 414 | ctx->ext = 1; |
| 415 | break; |
| 416 | default: |
| 417 | return -1; |
| 418 | } |
| 419 | ctx->count = 0; |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len) |
| 424 | { |
| 425 | unsigned int i, j; |
| 426 | |
| 427 | j = ctx->count & 63; |
| 428 | ctx->count += len; |
| 429 | #if CONFIG_SMALL |
| 430 | for (i = 0; i < len; i++) { |
| 431 | ctx->buffer[j++] = data[i]; |
| 432 | if (64 == j) { |
| 433 | ctx->transform(ctx->state, ctx->buffer, ctx->ext); |
| 434 | j = 0; |
| 435 | } |
| 436 | } |
| 437 | #else |
| 438 | if ((j + len) > 63) { |
| 439 | memcpy(&ctx->buffer[j], data, (i = 64 - j)); |
| 440 | ctx->transform(ctx->state, ctx->buffer, ctx->ext); |
| 441 | for (; i + 63 < len; i += 64) |
| 442 | ctx->transform(ctx->state, &data[i], ctx->ext); |
| 443 | j = 0; |
| 444 | } else |
| 445 | i = 0; |
| 446 | memcpy(&ctx->buffer[j], &data[i], len - i); |
| 447 | #endif |
| 448 | } |
| 449 | |
| 450 | void av_ripemd_final(AVRIPEMD* ctx, uint8_t *digest) |
| 451 | { |
| 452 | int i; |
| 453 | uint64_t finalcount = av_le2ne64(ctx->count << 3); |
| 454 | |
| 455 | av_ripemd_update(ctx, "\200", 1); |
| 456 | while ((ctx->count & 63) != 56) |
| 457 | av_ripemd_update(ctx, "", 1); |
| 458 | av_ripemd_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */ |
| 459 | for (i = 0; i < ctx->digest_len; i++) |
| 460 | AV_WL32(digest + i*4, ctx->state[i]); |
| 461 | } |
| 462 | |
| 463 | #ifdef TEST |
| 464 | #include <stdio.h> |
| 465 | |
| 466 | int main(void) |
| 467 | { |
| 468 | int i, j, k; |
| 469 | AVRIPEMD ctx; |
| 470 | unsigned char digest[40]; |
| 471 | static const int lengths[4] = { 128, 160, 256, 320 }; |
| 472 | |
| 473 | for (j = 0; j < 4; j++) { |
| 474 | printf("Testing RIPEMD-%d\n", lengths[j]); |
| 475 | for (k = 0; k < 3; k++) { |
| 476 | av_ripemd_init(&ctx, lengths[j]); |
| 477 | if (k == 0) |
| 478 | av_ripemd_update(&ctx, "abc", 3); |
| 479 | else if (k == 1) |
| 480 | av_ripemd_update(&ctx, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56); |
| 481 | else |
| 482 | for (i = 0; i < 1000*1000; i++) |
| 483 | av_ripemd_update(&ctx, "a", 1); |
| 484 | av_ripemd_final(&ctx, digest); |
| 485 | for (i = 0; i < lengths[j] >> 3; i++) |
| 486 | printf("%02X", digest[i]); |
| 487 | putchar('\n'); |
| 488 | } |
| 489 | switch (j) { //test vectors (from ISO:IEC 10118-3 (2004) and http://homes.esat.kuleuven.be/~bosselae/ripemd160.html) |
| 490 | case 0: |
| 491 | printf("c14a1219 9c66e4ba 84636b0f 69144c77\n" |
| 492 | "a1aa0689 d0fafa2d dc22e88b 49133a06\n" |
| 493 | "4a7f5723 f954eba1 216c9d8f 6320431f\n"); |
| 494 | break; |
| 495 | case 1: |
| 496 | printf("8eb208f7 e05d987a 9b044a8e 98c6b087 f15a0bfc\n" |
| 497 | "12a05338 4a9c0c88 e405a06c 27dcf49a da62eb2b\n" |
| 498 | "52783243 c1697bdb e16d37f9 7f68f083 25dc1528\n"); |
| 499 | break; |
| 500 | case 2: |
| 501 | printf("afbd6e22 8b9d8cbb cef5ca2d 03e6dba1 0ac0bc7d cbe4680e 1e42d2e9 75459b65\n" |
| 502 | "38430455 83aac6c8 c8d91285 73e7a980 9afb2a0f 34ccc36e a9e72f16 f6368e3f\n" |
| 503 | "ac953744 e10e3151 4c150d4d 8d7b6773 42e33399 788296e4 3ae4850c e4f97978\n"); |
| 504 | break; |
| 505 | case 3: |
| 506 | printf("de4c01b3 054f8930 a79d09ae 738e9230 1e5a1708 5beffdc1 b8d11671 3e74f82f a942d64c dbc4682d\n" |
| 507 | "d034a795 0cf72202 1ba4b84d f769a5de 2060e259 df4c9bb4 a4268c0e 935bbc74 70a969c9 d072a1ac\n" |
| 508 | "bdee37f4 371e2064 6b8b0d86 2dda1629 2ae36f40 965e8c85 09e63d1d bddecc50 3e2b63eb 9245bb66\n"); |
| 509 | break; |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | return 0; |
| 514 | } |
| 515 | #endif |