1 /* $OpenBSD: rmd160.c,v 1.3 2001/09/26 21:40:13 markus Exp $ */ 2 /*- 3 * Copyright (c) 2001 Markus Friedl. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 /* 27 * Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160", 28 * RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997, 29 * ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf 30 */ 31 32 #include <sys/cdefs.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/endian.h> 36 #include <opencrypto/rmd160.h> 37 38 #define PUT_64BIT_LE(cp, value) do { \ 39 (cp)[7] = (value) >> 56; \ 40 (cp)[6] = (value) >> 48; \ 41 (cp)[5] = (value) >> 40; \ 42 (cp)[4] = (value) >> 32; \ 43 (cp)[3] = (value) >> 24; \ 44 (cp)[2] = (value) >> 16; \ 45 (cp)[1] = (value) >> 8; \ 46 (cp)[0] = (value); } while (0) 47 48 #define PUT_32BIT_LE(cp, value) do { \ 49 (cp)[3] = (value) >> 24; \ 50 (cp)[2] = (value) >> 16; \ 51 (cp)[1] = (value) >> 8; \ 52 (cp)[0] = (value); } while (0) 53 54 #define H0 0x67452301U 55 #define H1 0xEFCDAB89U 56 #define H2 0x98BADCFEU 57 #define H3 0x10325476U 58 #define H4 0xC3D2E1F0U 59 60 #define K0 0x00000000U 61 #define K1 0x5A827999U 62 #define K2 0x6ED9EBA1U 63 #define K3 0x8F1BBCDCU 64 #define K4 0xA953FD4EU 65 66 #define KK0 0x50A28BE6U 67 #define KK1 0x5C4DD124U 68 #define KK2 0x6D703EF3U 69 #define KK3 0x7A6D76E9U 70 #define KK4 0x00000000U 71 72 /* rotate x left n bits. */ 73 #define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n)))) 74 75 #define F0(x, y, z) ((x) ^ (y) ^ (z)) 76 #define F1(x, y, z) (((x) & (y)) | ((~x) & (z))) 77 #define F2(x, y, z) (((x) | (~y)) ^ (z)) 78 #define F3(x, y, z) (((x) & (z)) | ((y) & (~z))) 79 #define F4(x, y, z) ((x) ^ ((y) | (~z))) 80 81 #define R(a, b, c, d, e, Fj, Kj, sj, rj) \ 82 do { \ 83 a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \ 84 c = ROL(10, c); \ 85 } while(0) 86 87 #define X(i) x[i] 88 89 static u_char PADDING[64] = { 90 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 91 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 92 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 93 }; 94 95 void 96 RMD160Init(RMD160_CTX *ctx) 97 { 98 ctx->count = 0; 99 ctx->state[0] = H0; 100 ctx->state[1] = H1; 101 ctx->state[2] = H2; 102 ctx->state[3] = H3; 103 ctx->state[4] = H4; 104 } 105 106 void 107 RMD160Update(RMD160_CTX *ctx, const u_char *input, uint32_t len) 108 { 109 uint32_t have, off, need; 110 111 have = (ctx->count/8) % 64; 112 need = 64 - have; 113 ctx->count += 8 * len; 114 off = 0; 115 116 if (len >= need) { 117 if (have) { 118 memcpy(ctx->buffer + have, input, need); 119 RMD160Transform(ctx->state, ctx->buffer); 120 off = need; 121 have = 0; 122 } 123 /* now the buffer is empty */ 124 while (off + 64 <= len) { 125 RMD160Transform(ctx->state, input+off); 126 off += 64; 127 } 128 } 129 if (off < len) 130 memcpy(ctx->buffer + have, input+off, len-off); 131 } 132 133 void 134 RMD160Final(u_char digest[20], RMD160_CTX *ctx) 135 { 136 int i; 137 u_char size[8]; 138 uint32_t padlen; 139 140 PUT_64BIT_LE(size, ctx->count); 141 142 /* 143 * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes 144 * for the size 145 */ 146 padlen = 64 - ((ctx->count/8) % 64); 147 if (padlen < 1 + 8) 148 padlen += 64; 149 RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */ 150 RMD160Update(ctx, size, 8); 151 152 if (digest != NULL) 153 for (i = 0; i < 5; i++) 154 PUT_32BIT_LE(digest + i*4, ctx->state[i]); 155 156 memset(ctx, 0, sizeof (*ctx)); 157 } 158 159 void 160 RMD160Transform(uint32_t state[5], const u_char block[64]) 161 { 162 uint32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16]; 163 164 #if BYTE_ORDER == LITTLE_ENDIAN 165 memcpy(x, block, 64); 166 #else 167 int i; 168 169 for (i = 0; i < 16; i++) 170 x[i] = bswap32(*(const uint32_t*)(block+i*4)); 171 #endif 172 173 a = state[0]; 174 b = state[1]; 175 c = state[2]; 176 d = state[3]; 177 e = state[4]; 178 179 /* Round 1 */ 180 R(a, b, c, d, e, F0, K0, 11, 0); 181 R(e, a, b, c, d, F0, K0, 14, 1); 182 R(d, e, a, b, c, F0, K0, 15, 2); 183 R(c, d, e, a, b, F0, K0, 12, 3); 184 R(b, c, d, e, a, F0, K0, 5, 4); 185 R(a, b, c, d, e, F0, K0, 8, 5); 186 R(e, a, b, c, d, F0, K0, 7, 6); 187 R(d, e, a, b, c, F0, K0, 9, 7); 188 R(c, d, e, a, b, F0, K0, 11, 8); 189 R(b, c, d, e, a, F0, K0, 13, 9); 190 R(a, b, c, d, e, F0, K0, 14, 10); 191 R(e, a, b, c, d, F0, K0, 15, 11); 192 R(d, e, a, b, c, F0, K0, 6, 12); 193 R(c, d, e, a, b, F0, K0, 7, 13); 194 R(b, c, d, e, a, F0, K0, 9, 14); 195 R(a, b, c, d, e, F0, K0, 8, 15); /* #15 */ 196 /* Round 2 */ 197 R(e, a, b, c, d, F1, K1, 7, 7); 198 R(d, e, a, b, c, F1, K1, 6, 4); 199 R(c, d, e, a, b, F1, K1, 8, 13); 200 R(b, c, d, e, a, F1, K1, 13, 1); 201 R(a, b, c, d, e, F1, K1, 11, 10); 202 R(e, a, b, c, d, F1, K1, 9, 6); 203 R(d, e, a, b, c, F1, K1, 7, 15); 204 R(c, d, e, a, b, F1, K1, 15, 3); 205 R(b, c, d, e, a, F1, K1, 7, 12); 206 R(a, b, c, d, e, F1, K1, 12, 0); 207 R(e, a, b, c, d, F1, K1, 15, 9); 208 R(d, e, a, b, c, F1, K1, 9, 5); 209 R(c, d, e, a, b, F1, K1, 11, 2); 210 R(b, c, d, e, a, F1, K1, 7, 14); 211 R(a, b, c, d, e, F1, K1, 13, 11); 212 R(e, a, b, c, d, F1, K1, 12, 8); /* #31 */ 213 /* Round 3 */ 214 R(d, e, a, b, c, F2, K2, 11, 3); 215 R(c, d, e, a, b, F2, K2, 13, 10); 216 R(b, c, d, e, a, F2, K2, 6, 14); 217 R(a, b, c, d, e, F2, K2, 7, 4); 218 R(e, a, b, c, d, F2, K2, 14, 9); 219 R(d, e, a, b, c, F2, K2, 9, 15); 220 R(c, d, e, a, b, F2, K2, 13, 8); 221 R(b, c, d, e, a, F2, K2, 15, 1); 222 R(a, b, c, d, e, F2, K2, 14, 2); 223 R(e, a, b, c, d, F2, K2, 8, 7); 224 R(d, e, a, b, c, F2, K2, 13, 0); 225 R(c, d, e, a, b, F2, K2, 6, 6); 226 R(b, c, d, e, a, F2, K2, 5, 13); 227 R(a, b, c, d, e, F2, K2, 12, 11); 228 R(e, a, b, c, d, F2, K2, 7, 5); 229 R(d, e, a, b, c, F2, K2, 5, 12); /* #47 */ 230 /* Round 4 */ 231 R(c, d, e, a, b, F3, K3, 11, 1); 232 R(b, c, d, e, a, F3, K3, 12, 9); 233 R(a, b, c, d, e, F3, K3, 14, 11); 234 R(e, a, b, c, d, F3, K3, 15, 10); 235 R(d, e, a, b, c, F3, K3, 14, 0); 236 R(c, d, e, a, b, F3, K3, 15, 8); 237 R(b, c, d, e, a, F3, K3, 9, 12); 238 R(a, b, c, d, e, F3, K3, 8, 4); 239 R(e, a, b, c, d, F3, K3, 9, 13); 240 R(d, e, a, b, c, F3, K3, 14, 3); 241 R(c, d, e, a, b, F3, K3, 5, 7); 242 R(b, c, d, e, a, F3, K3, 6, 15); 243 R(a, b, c, d, e, F3, K3, 8, 14); 244 R(e, a, b, c, d, F3, K3, 6, 5); 245 R(d, e, a, b, c, F3, K3, 5, 6); 246 R(c, d, e, a, b, F3, K3, 12, 2); /* #63 */ 247 /* Round 5 */ 248 R(b, c, d, e, a, F4, K4, 9, 4); 249 R(a, b, c, d, e, F4, K4, 15, 0); 250 R(e, a, b, c, d, F4, K4, 5, 5); 251 R(d, e, a, b, c, F4, K4, 11, 9); 252 R(c, d, e, a, b, F4, K4, 6, 7); 253 R(b, c, d, e, a, F4, K4, 8, 12); 254 R(a, b, c, d, e, F4, K4, 13, 2); 255 R(e, a, b, c, d, F4, K4, 12, 10); 256 R(d, e, a, b, c, F4, K4, 5, 14); 257 R(c, d, e, a, b, F4, K4, 12, 1); 258 R(b, c, d, e, a, F4, K4, 13, 3); 259 R(a, b, c, d, e, F4, K4, 14, 8); 260 R(e, a, b, c, d, F4, K4, 11, 11); 261 R(d, e, a, b, c, F4, K4, 8, 6); 262 R(c, d, e, a, b, F4, K4, 5, 15); 263 R(b, c, d, e, a, F4, K4, 6, 13); /* #79 */ 264 265 aa = a ; bb = b; cc = c; dd = d; ee = e; 266 267 a = state[0]; 268 b = state[1]; 269 c = state[2]; 270 d = state[3]; 271 e = state[4]; 272 273 /* Parallel round 1 */ 274 R(a, b, c, d, e, F4, KK0, 8, 5); 275 R(e, a, b, c, d, F4, KK0, 9, 14); 276 R(d, e, a, b, c, F4, KK0, 9, 7); 277 R(c, d, e, a, b, F4, KK0, 11, 0); 278 R(b, c, d, e, a, F4, KK0, 13, 9); 279 R(a, b, c, d, e, F4, KK0, 15, 2); 280 R(e, a, b, c, d, F4, KK0, 15, 11); 281 R(d, e, a, b, c, F4, KK0, 5, 4); 282 R(c, d, e, a, b, F4, KK0, 7, 13); 283 R(b, c, d, e, a, F4, KK0, 7, 6); 284 R(a, b, c, d, e, F4, KK0, 8, 15); 285 R(e, a, b, c, d, F4, KK0, 11, 8); 286 R(d, e, a, b, c, F4, KK0, 14, 1); 287 R(c, d, e, a, b, F4, KK0, 14, 10); 288 R(b, c, d, e, a, F4, KK0, 12, 3); 289 R(a, b, c, d, e, F4, KK0, 6, 12); /* #15 */ 290 /* Parallel round 2 */ 291 R(e, a, b, c, d, F3, KK1, 9, 6); 292 R(d, e, a, b, c, F3, KK1, 13, 11); 293 R(c, d, e, a, b, F3, KK1, 15, 3); 294 R(b, c, d, e, a, F3, KK1, 7, 7); 295 R(a, b, c, d, e, F3, KK1, 12, 0); 296 R(e, a, b, c, d, F3, KK1, 8, 13); 297 R(d, e, a, b, c, F3, KK1, 9, 5); 298 R(c, d, e, a, b, F3, KK1, 11, 10); 299 R(b, c, d, e, a, F3, KK1, 7, 14); 300 R(a, b, c, d, e, F3, KK1, 7, 15); 301 R(e, a, b, c, d, F3, KK1, 12, 8); 302 R(d, e, a, b, c, F3, KK1, 7, 12); 303 R(c, d, e, a, b, F3, KK1, 6, 4); 304 R(b, c, d, e, a, F3, KK1, 15, 9); 305 R(a, b, c, d, e, F3, KK1, 13, 1); 306 R(e, a, b, c, d, F3, KK1, 11, 2); /* #31 */ 307 /* Parallel round 3 */ 308 R(d, e, a, b, c, F2, KK2, 9, 15); 309 R(c, d, e, a, b, F2, KK2, 7, 5); 310 R(b, c, d, e, a, F2, KK2, 15, 1); 311 R(a, b, c, d, e, F2, KK2, 11, 3); 312 R(e, a, b, c, d, F2, KK2, 8, 7); 313 R(d, e, a, b, c, F2, KK2, 6, 14); 314 R(c, d, e, a, b, F2, KK2, 6, 6); 315 R(b, c, d, e, a, F2, KK2, 14, 9); 316 R(a, b, c, d, e, F2, KK2, 12, 11); 317 R(e, a, b, c, d, F2, KK2, 13, 8); 318 R(d, e, a, b, c, F2, KK2, 5, 12); 319 R(c, d, e, a, b, F2, KK2, 14, 2); 320 R(b, c, d, e, a, F2, KK2, 13, 10); 321 R(a, b, c, d, e, F2, KK2, 13, 0); 322 R(e, a, b, c, d, F2, KK2, 7, 4); 323 R(d, e, a, b, c, F2, KK2, 5, 13); /* #47 */ 324 /* Parallel round 4 */ 325 R(c, d, e, a, b, F1, KK3, 15, 8); 326 R(b, c, d, e, a, F1, KK3, 5, 6); 327 R(a, b, c, d, e, F1, KK3, 8, 4); 328 R(e, a, b, c, d, F1, KK3, 11, 1); 329 R(d, e, a, b, c, F1, KK3, 14, 3); 330 R(c, d, e, a, b, F1, KK3, 14, 11); 331 R(b, c, d, e, a, F1, KK3, 6, 15); 332 R(a, b, c, d, e, F1, KK3, 14, 0); 333 R(e, a, b, c, d, F1, KK3, 6, 5); 334 R(d, e, a, b, c, F1, KK3, 9, 12); 335 R(c, d, e, a, b, F1, KK3, 12, 2); 336 R(b, c, d, e, a, F1, KK3, 9, 13); 337 R(a, b, c, d, e, F1, KK3, 12, 9); 338 R(e, a, b, c, d, F1, KK3, 5, 7); 339 R(d, e, a, b, c, F1, KK3, 15, 10); 340 R(c, d, e, a, b, F1, KK3, 8, 14); /* #63 */ 341 /* Parallel round 5 */ 342 R(b, c, d, e, a, F0, KK4, 8, 12); 343 R(a, b, c, d, e, F0, KK4, 5, 15); 344 R(e, a, b, c, d, F0, KK4, 12, 10); 345 R(d, e, a, b, c, F0, KK4, 9, 4); 346 R(c, d, e, a, b, F0, KK4, 12, 1); 347 R(b, c, d, e, a, F0, KK4, 5, 5); 348 R(a, b, c, d, e, F0, KK4, 14, 8); 349 R(e, a, b, c, d, F0, KK4, 6, 7); 350 R(d, e, a, b, c, F0, KK4, 8, 6); 351 R(c, d, e, a, b, F0, KK4, 13, 2); 352 R(b, c, d, e, a, F0, KK4, 6, 13); 353 R(a, b, c, d, e, F0, KK4, 5, 14); 354 R(e, a, b, c, d, F0, KK4, 15, 0); 355 R(d, e, a, b, c, F0, KK4, 13, 3); 356 R(c, d, e, a, b, F0, KK4, 11, 9); 357 R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */ 358 359 t = state[1] + cc + d; 360 state[1] = state[2] + dd + e; 361 state[2] = state[3] + ee + a; 362 state[3] = state[4] + aa + b; 363 state[4] = state[0] + bb + c; 364 state[0] = t; 365 } 366