| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: rmd320.c,v 1.2 2004/04/08 01:36:15 mdw Exp $ |
| 4 | * |
| 5 | * The RIPEMD-320 message digest function |
| 6 | * |
| 7 | * (c) 1998 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of Catacomb. |
| 13 | * |
| 14 | * Catacomb is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU Library General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of the |
| 17 | * License, or (at your option) any later version. |
| 18 | * |
| 19 | * Catacomb is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU Library General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU Library General Public |
| 25 | * License along with Catacomb; if not, write to the Free |
| 26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 27 | * MA 02111-1307, USA. |
| 28 | */ |
| 29 | |
| 30 | /*----- Header files ------------------------------------------------------*/ |
| 31 | |
| 32 | #include <mLib/bits.h> |
| 33 | |
| 34 | #include "ghash.h" |
| 35 | #include "ghash-def.h" |
| 36 | #include "hash.h" |
| 37 | #include "rmd320.h" |
| 38 | |
| 39 | /*----- Main code ---------------------------------------------------------*/ |
| 40 | |
| 41 | /* --- @rmd320_compress@ --- * |
| 42 | * |
| 43 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
| 44 | * @const void *sbuf@ = pointer to buffer of appropriate size |
| 45 | * |
| 46 | * Returns: --- |
| 47 | * |
| 48 | * Use: RIPEMD-320 compression function. |
| 49 | */ |
| 50 | |
| 51 | void rmd320_compress(rmd320_ctx *ctx, const void *sbuf) |
| 52 | { |
| 53 | uint32 a, b, c, d, e; |
| 54 | uint32 A, B, C, D, E; |
| 55 | uint32 buf[16]; |
| 56 | |
| 57 | /* --- Fetch the chaining variables --- */ |
| 58 | |
| 59 | a = ctx->a; |
| 60 | b = ctx->b; |
| 61 | c = ctx->c; |
| 62 | d = ctx->d; |
| 63 | e = ctx->e; |
| 64 | |
| 65 | A = ctx->A; |
| 66 | B = ctx->B; |
| 67 | C = ctx->C; |
| 68 | D = ctx->D; |
| 69 | E = ctx->E; |
| 70 | |
| 71 | /* --- Fetch the buffer contents --- */ |
| 72 | |
| 73 | { |
| 74 | int i; |
| 75 | const octet *p; |
| 76 | |
| 77 | for (i = 0, p = sbuf; i < 16; i++, p += 4) |
| 78 | buf[i] = LOAD32_L(p); |
| 79 | } |
| 80 | |
| 81 | /* --- Definitions for round functions --- */ |
| 82 | |
| 83 | #define F(x, y, z) ((x) ^ (y) ^ (z)) |
| 84 | #define G(x, y, z) (((x) & (y)) | (~(x) & (z))) |
| 85 | #define H(x, y, z) (((x) | ~(y)) ^ (z)) |
| 86 | #define I(x, y, z) (((x) & (z)) | ((y) & ~(z))) |
| 87 | #define J(x, y, z) ((x) ^ ((y) | ~(z))) |
| 88 | |
| 89 | #define T(v, w, x, y, z, i, r, f, k) do { \ |
| 90 | uint32 _t = v + f(w, x, y) + buf[i] + k; \ |
| 91 | v = ROL32(_t, r) + z; x = ROL32(x, 10); \ |
| 92 | } while (0) |
| 93 | |
| 94 | #define F1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000) |
| 95 | #define G1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x5a827999) |
| 96 | #define H1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6ed9eba1) |
| 97 | #define I1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x8f1bbcdc) |
| 98 | #define J1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0xa953fd4e) |
| 99 | |
| 100 | #define F2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0x50a28be6) |
| 101 | #define G2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x5c4dd124) |
| 102 | #define H2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6d703ef3) |
| 103 | #define I2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x7a6d76e9) |
| 104 | #define J2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000) |
| 105 | |
| 106 | /* --- We must do both lines together --- */ |
| 107 | |
| 108 | F1(a, b, c, d, e, 0, 11); |
| 109 | F1(e, a, b, c, d, 1, 14); |
| 110 | F1(d, e, a, b, c, 2, 15); |
| 111 | F1(c, d, e, a, b, 3, 12); |
| 112 | F1(b, c, d, e, a, 4, 5); |
| 113 | F1(a, b, c, d, e, 5, 8); |
| 114 | F1(e, a, b, c, d, 6, 7); |
| 115 | F1(d, e, a, b, c, 7, 9); |
| 116 | F1(c, d, e, a, b, 8, 11); |
| 117 | F1(b, c, d, e, a, 9, 13); |
| 118 | F1(a, b, c, d, e, 10, 14); |
| 119 | F1(e, a, b, c, d, 11, 15); |
| 120 | F1(d, e, a, b, c, 12, 6); |
| 121 | F1(c, d, e, a, b, 13, 7); |
| 122 | F1(b, c, d, e, a, 14, 9); |
| 123 | F1(a, b, c, d, e, 15, 8); |
| 124 | |
| 125 | F2(A, B, C, D, E, 5, 8); |
| 126 | F2(E, A, B, C, D, 14, 9); |
| 127 | F2(D, E, A, B, C, 7, 9); |
| 128 | F2(C, D, E, A, B, 0, 11); |
| 129 | F2(B, C, D, E, A, 9, 13); |
| 130 | F2(A, B, C, D, E, 2, 15); |
| 131 | F2(E, A, B, C, D, 11, 15); |
| 132 | F2(D, E, A, B, C, 4, 5); |
| 133 | F2(C, D, E, A, B, 13, 7); |
| 134 | F2(B, C, D, E, A, 6, 7); |
| 135 | F2(A, B, C, D, E, 15, 8); |
| 136 | F2(E, A, B, C, D, 8, 11); |
| 137 | F2(D, E, A, B, C, 1, 14); |
| 138 | F2(C, D, E, A, B, 10, 14); |
| 139 | F2(B, C, D, E, A, 3, 12); |
| 140 | F2(A, B, C, D, E, 12, 6); |
| 141 | |
| 142 | G1(e, A, b, c, d, 7, 7); |
| 143 | G1(d, e, A, b, c, 4, 6); |
| 144 | G1(c, d, e, A, b, 13, 8); |
| 145 | G1(b, c, d, e, A, 1, 13); |
| 146 | G1(A, b, c, d, e, 10, 11); |
| 147 | G1(e, A, b, c, d, 6, 9); |
| 148 | G1(d, e, A, b, c, 15, 7); |
| 149 | G1(c, d, e, A, b, 3, 15); |
| 150 | G1(b, c, d, e, A, 12, 7); |
| 151 | G1(A, b, c, d, e, 0, 12); |
| 152 | G1(e, A, b, c, d, 9, 15); |
| 153 | G1(d, e, A, b, c, 5, 9); |
| 154 | G1(c, d, e, A, b, 2, 11); |
| 155 | G1(b, c, d, e, A, 14, 7); |
| 156 | G1(A, b, c, d, e, 11, 13); |
| 157 | G1(e, A, b, c, d, 8, 12); |
| 158 | |
| 159 | G2(E, a, B, C, D, 6, 9); |
| 160 | G2(D, E, a, B, C, 11, 13); |
| 161 | G2(C, D, E, a, B, 3, 15); |
| 162 | G2(B, C, D, E, a, 7, 7); |
| 163 | G2(a, B, C, D, E, 0, 12); |
| 164 | G2(E, a, B, C, D, 13, 8); |
| 165 | G2(D, E, a, B, C, 5, 9); |
| 166 | G2(C, D, E, a, B, 10, 11); |
| 167 | G2(B, C, D, E, a, 14, 7); |
| 168 | G2(a, B, C, D, E, 15, 7); |
| 169 | G2(E, a, B, C, D, 8, 12); |
| 170 | G2(D, E, a, B, C, 12, 7); |
| 171 | G2(C, D, E, a, B, 4, 6); |
| 172 | G2(B, C, D, E, a, 9, 15); |
| 173 | G2(a, B, C, D, E, 1, 13); |
| 174 | G2(E, a, B, C, D, 2, 11); |
| 175 | |
| 176 | H1(d, e, A, B, c, 3, 11); |
| 177 | H1(c, d, e, A, B, 10, 13); |
| 178 | H1(B, c, d, e, A, 14, 6); |
| 179 | H1(A, B, c, d, e, 4, 7); |
| 180 | H1(e, A, B, c, d, 9, 14); |
| 181 | H1(d, e, A, B, c, 15, 9); |
| 182 | H1(c, d, e, A, B, 8, 13); |
| 183 | H1(B, c, d, e, A, 1, 15); |
| 184 | H1(A, B, c, d, e, 2, 14); |
| 185 | H1(e, A, B, c, d, 7, 8); |
| 186 | H1(d, e, A, B, c, 0, 13); |
| 187 | H1(c, d, e, A, B, 6, 6); |
| 188 | H1(B, c, d, e, A, 13, 5); |
| 189 | H1(A, B, c, d, e, 11, 12); |
| 190 | H1(e, A, B, c, d, 5, 7); |
| 191 | H1(d, e, A, B, c, 12, 5); |
| 192 | |
| 193 | H2(D, E, a, b, C, 15, 9); |
| 194 | H2(C, D, E, a, b, 5, 7); |
| 195 | H2(b, C, D, E, a, 1, 15); |
| 196 | H2(a, b, C, D, E, 3, 11); |
| 197 | H2(E, a, b, C, D, 7, 8); |
| 198 | H2(D, E, a, b, C, 14, 6); |
| 199 | H2(C, D, E, a, b, 6, 6); |
| 200 | H2(b, C, D, E, a, 9, 14); |
| 201 | H2(a, b, C, D, E, 11, 12); |
| 202 | H2(E, a, b, C, D, 8, 13); |
| 203 | H2(D, E, a, b, C, 12, 5); |
| 204 | H2(C, D, E, a, b, 2, 14); |
| 205 | H2(b, C, D, E, a, 10, 13); |
| 206 | H2(a, b, C, D, E, 0, 13); |
| 207 | H2(E, a, b, C, D, 4, 7); |
| 208 | H2(D, E, a, b, C, 13, 5); |
| 209 | |
| 210 | I1(C, d, e, A, B, 1, 11); |
| 211 | I1(B, C, d, e, A, 9, 12); |
| 212 | I1(A, B, C, d, e, 11, 14); |
| 213 | I1(e, A, B, C, d, 10, 15); |
| 214 | I1(d, e, A, B, C, 0, 14); |
| 215 | I1(C, d, e, A, B, 8, 15); |
| 216 | I1(B, C, d, e, A, 12, 9); |
| 217 | I1(A, B, C, d, e, 4, 8); |
| 218 | I1(e, A, B, C, d, 13, 9); |
| 219 | I1(d, e, A, B, C, 3, 14); |
| 220 | I1(C, d, e, A, B, 7, 5); |
| 221 | I1(B, C, d, e, A, 15, 6); |
| 222 | I1(A, B, C, d, e, 14, 8); |
| 223 | I1(e, A, B, C, d, 5, 6); |
| 224 | I1(d, e, A, B, C, 6, 5); |
| 225 | I1(C, d, e, A, B, 2, 12); |
| 226 | |
| 227 | I2(c, D, E, a, b, 8, 15); |
| 228 | I2(b, c, D, E, a, 6, 5); |
| 229 | I2(a, b, c, D, E, 4, 8); |
| 230 | I2(E, a, b, c, D, 1, 11); |
| 231 | I2(D, E, a, b, c, 3, 14); |
| 232 | I2(c, D, E, a, b, 11, 14); |
| 233 | I2(b, c, D, E, a, 15, 6); |
| 234 | I2(a, b, c, D, E, 0, 14); |
| 235 | I2(E, a, b, c, D, 5, 6); |
| 236 | I2(D, E, a, b, c, 12, 9); |
| 237 | I2(c, D, E, a, b, 2, 12); |
| 238 | I2(b, c, D, E, a, 13, 9); |
| 239 | I2(a, b, c, D, E, 9, 12); |
| 240 | I2(E, a, b, c, D, 7, 5); |
| 241 | I2(D, E, a, b, c, 10, 15); |
| 242 | I2(c, D, E, a, b, 14, 8); |
| 243 | |
| 244 | J1(B, C, D, e, A, 4, 9); |
| 245 | J1(A, B, C, D, e, 0, 15); |
| 246 | J1(e, A, B, C, D, 5, 5); |
| 247 | J1(D, e, A, B, C, 9, 11); |
| 248 | J1(C, D, e, A, B, 7, 6); |
| 249 | J1(B, C, D, e, A, 12, 8); |
| 250 | J1(A, B, C, D, e, 2, 13); |
| 251 | J1(e, A, B, C, D, 10, 12); |
| 252 | J1(D, e, A, B, C, 14, 5); |
| 253 | J1(C, D, e, A, B, 1, 12); |
| 254 | J1(B, C, D, e, A, 3, 13); |
| 255 | J1(A, B, C, D, e, 8, 14); |
| 256 | J1(e, A, B, C, D, 11, 11); |
| 257 | J1(D, e, A, B, C, 6, 8); |
| 258 | J1(C, D, e, A, B, 15, 5); |
| 259 | J1(B, C, D, e, A, 13, 6); |
| 260 | |
| 261 | J2(b, c, d, E, a, 12, 8); |
| 262 | J2(a, b, c, d, E, 15, 5); |
| 263 | J2(E, a, b, c, d, 10, 12); |
| 264 | J2(d, E, a, b, c, 4, 9); |
| 265 | J2(c, d, E, a, b, 1, 12); |
| 266 | J2(b, c, d, E, a, 5, 5); |
| 267 | J2(a, b, c, d, E, 8, 14); |
| 268 | J2(E, a, b, c, d, 7, 6); |
| 269 | J2(d, E, a, b, c, 6, 8); |
| 270 | J2(c, d, E, a, b, 2, 13); |
| 271 | J2(b, c, d, E, a, 13, 6); |
| 272 | J2(a, b, c, d, E, 14, 5); |
| 273 | J2(E, a, b, c, d, 0, 15); |
| 274 | J2(d, E, a, b, c, 3, 13); |
| 275 | J2(c, d, E, a, b, 9, 11); |
| 276 | J2(b, c, d, E, a, 11, 11); |
| 277 | |
| 278 | /* --- Write out the result --- */ |
| 279 | |
| 280 | ctx->a += A; |
| 281 | ctx->b += B; |
| 282 | ctx->c += C; |
| 283 | ctx->d += D; |
| 284 | ctx->e += E; |
| 285 | ctx->A += a; |
| 286 | ctx->B += b; |
| 287 | ctx->C += c; |
| 288 | ctx->D += d; |
| 289 | ctx->E += e; |
| 290 | } |
| 291 | |
| 292 | /* --- @rmd320_init@ --- * |
| 293 | * |
| 294 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block to initialize |
| 295 | * |
| 296 | * Returns: --- |
| 297 | * |
| 298 | * Use: Initializes a context block ready for hashing. |
| 299 | */ |
| 300 | |
| 301 | void rmd320_init(rmd320_ctx *ctx) |
| 302 | { |
| 303 | ctx->a = 0x67452301; |
| 304 | ctx->b = 0xefcdab89; |
| 305 | ctx->c = 0x98badcfe; |
| 306 | ctx->d = 0x10325476; |
| 307 | ctx->e = 0xc3d2e1f0; |
| 308 | ctx->A = 0x76543210; |
| 309 | ctx->B = 0xfedcba98; |
| 310 | ctx->C = 0x89abcdef; |
| 311 | ctx->D = 0x01234567; |
| 312 | ctx->E = 0x3c2d1e0f; |
| 313 | ctx->off = 0; |
| 314 | ctx->nl = ctx->nh = 0; |
| 315 | } |
| 316 | |
| 317 | /* --- @rmd320_set@ --- * |
| 318 | * |
| 319 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
| 320 | * @const void *buf@ = pointer to state buffer |
| 321 | * @unsigned long count@ = current count of bytes processed |
| 322 | * |
| 323 | * Returns: --- |
| 324 | * |
| 325 | * Use: Initializes a context block from a given state. This is |
| 326 | * useful in cases where the initial hash state is meant to be |
| 327 | * secret, e.g., for NMAC and HMAC support. |
| 328 | */ |
| 329 | |
| 330 | void rmd320_set(rmd320_ctx *ctx, const void *buf, unsigned long count) |
| 331 | { |
| 332 | const octet *p = buf; |
| 333 | ctx->a = LOAD32_L(p + 0); |
| 334 | ctx->b = LOAD32_L(p + 4); |
| 335 | ctx->c = LOAD32_L(p + 8); |
| 336 | ctx->d = LOAD32_L(p + 12); |
| 337 | ctx->e = LOAD32_L(p + 16); |
| 338 | ctx->A = LOAD32_L(p + 20); |
| 339 | ctx->B = LOAD32_L(p + 24); |
| 340 | ctx->C = LOAD32_L(p + 28); |
| 341 | ctx->D = LOAD32_L(p + 32); |
| 342 | ctx->E = LOAD32_L(p + 36); |
| 343 | ctx->off = 0; |
| 344 | ctx->nl = U32(count); |
| 345 | ctx->nh = U32(((count & ~MASK32) >> 16) >> 16); |
| 346 | } |
| 347 | |
| 348 | /* --- @rmd320_hash@ --- * |
| 349 | * |
| 350 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
| 351 | * @const void *buf@ = buffer of data to hash |
| 352 | * @size_t sz@ = size of buffer to hash |
| 353 | * |
| 354 | * Returns: --- |
| 355 | * |
| 356 | * Use: Hashes a buffer of data. The buffer may be of any size and |
| 357 | * alignment. |
| 358 | */ |
| 359 | |
| 360 | void rmd320_hash(rmd320_ctx *ctx, const void *buf, size_t sz) |
| 361 | { |
| 362 | HASH_BUFFER(RMD320, rmd320, ctx, buf, sz); |
| 363 | } |
| 364 | |
| 365 | /* --- @rmd320_done@ --- * |
| 366 | * |
| 367 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
| 368 | * @void *hash@ = pointer to output buffer |
| 369 | * |
| 370 | * Returns: --- |
| 371 | * |
| 372 | * Use: Returns the hash of the data read so far. |
| 373 | */ |
| 374 | |
| 375 | void rmd320_done(rmd320_ctx *ctx, void *hash) |
| 376 | { |
| 377 | octet *p = hash; |
| 378 | HASH_MD5STRENGTH(RMD320, rmd320, ctx); |
| 379 | STORE32_L(p + 0, ctx->a); |
| 380 | STORE32_L(p + 4, ctx->b); |
| 381 | STORE32_L(p + 8, ctx->c); |
| 382 | STORE32_L(p + 12, ctx->d); |
| 383 | STORE32_L(p + 16, ctx->e); |
| 384 | STORE32_L(p + 20, ctx->A); |
| 385 | STORE32_L(p + 24, ctx->B); |
| 386 | STORE32_L(p + 28, ctx->C); |
| 387 | STORE32_L(p + 32, ctx->D); |
| 388 | STORE32_L(p + 36, ctx->E); |
| 389 | } |
| 390 | |
| 391 | /* --- @rmd320_state@ --- * |
| 392 | * |
| 393 | * Arguments: @rmd320_ctx *ctx@ = pointer to context |
| 394 | * @void *state@ = pointer to buffer for current state |
| 395 | * |
| 396 | * Returns: Number of bytes written to the hash function so far. |
| 397 | * |
| 398 | * Use: Returns the current state of the hash function such that |
| 399 | * it can be passed to @rmd320_set@. |
| 400 | */ |
| 401 | |
| 402 | unsigned long rmd320_state(rmd320_ctx *ctx, void *state) |
| 403 | { |
| 404 | octet *p = state; |
| 405 | STORE32_L(p + 0, ctx->a); |
| 406 | STORE32_L(p + 4, ctx->b); |
| 407 | STORE32_L(p + 8, ctx->c); |
| 408 | STORE32_L(p + 12, ctx->d); |
| 409 | STORE32_L(p + 16, ctx->e); |
| 410 | STORE32_L(p + 20, ctx->A); |
| 411 | STORE32_L(p + 24, ctx->B); |
| 412 | STORE32_L(p + 28, ctx->C); |
| 413 | STORE32_L(p + 32, ctx->D); |
| 414 | STORE32_L(p + 36, ctx->E); |
| 415 | return (ctx->nl | ((ctx->nh << 16) << 16)); |
| 416 | } |
| 417 | |
| 418 | /* --- Generic interface --- */ |
| 419 | |
| 420 | GHASH_DEF(RMD320, rmd320) |
| 421 | |
| 422 | /* --- Test code --- */ |
| 423 | |
| 424 | HASH_TEST(RMD320, rmd320) |
| 425 | |
| 426 | /*----- That's all, folks -------------------------------------------------*/ |