rmd160.c revision 1.4
1 /* $NetBSD: rmd160.c,v 1.4 2008/02/16 17:37:13 apb Exp $ */ 2 /* $KAME: rmd160.c,v 1.2 2003/07/25 09:37:55 itojun Exp $ */ 3 /* $OpenBSD: rmd160.c,v 1.3 2001/09/26 21:40:13 markus Exp $ */ 4 /* 5 * Copyright (c) 2001 Markus Friedl. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 /* 28 * Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160", 29 * RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997, 30 * ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf 31 */ 32 33 #include <sys/cdefs.h> 34 35 #if defined(_KERNEL) || defined(_STANDALONE) 36 __KERNEL_RCSID(0, "$NetBSD: rmd160.c,v 1.4 2008/02/16 17:37:13 apb Exp $"); 37 38 #include <lib/libkern/libkern.h> 39 40 #else 41 42 #if defined(LIBC_SCCS) && !defined(lint) 43 __RCSID("$NetBSD: rmd160.c,v 1.4 2008/02/16 17:37:13 apb Exp $"); 44 #endif /* LIBC_SCCS and not lint */ 45 46 #include "namespace.h" 47 #include <assert.h> 48 #include <string.h> 49 50 #endif 51 52 #include <sys/types.h> 53 #include <sys/param.h> 54 #include <sys/rmd160.h> 55 56 57 #define PUT_64BIT_LE(cp, value) do { \ 58 (cp)[7] = (u_char)((value) >> 56); \ 59 (cp)[6] = (u_char)((value) >> 48); \ 60 (cp)[5] = (u_char)((value) >> 40); \ 61 (cp)[4] = (u_char)((value) >> 32); \ 62 (cp)[3] = (u_char)((value) >> 24); \ 63 (cp)[2] = (u_char)((value) >> 16); \ 64 (cp)[1] = (u_char)((value) >> 8); \ 65 (cp)[0] = (u_char)((value)); } while (/*CONSTCOND*/0) 66 67 #define PUT_32BIT_LE(cp, value) do { \ 68 (cp)[3] = (value) >> 24; \ 69 (cp)[2] = (value) >> 16; \ 70 (cp)[1] = (value) >> 8; \ 71 (cp)[0] = (value); } while (/*CONSTCOND*/0) 72 73 #define H0 0x67452301U 74 #define H1 0xEFCDAB89U 75 #define H2 0x98BADCFEU 76 #define H3 0x10325476U 77 #define H4 0xC3D2E1F0U 78 79 #define K0 0x00000000U 80 #define K1 0x5A827999U 81 #define K2 0x6ED9EBA1U 82 #define K3 0x8F1BBCDCU 83 #define K4 0xA953FD4EU 84 85 #define KK0 0x50A28BE6U 86 #define KK1 0x5C4DD124U 87 #define KK2 0x6D703EF3U 88 #define KK3 0x7A6D76E9U 89 #define KK4 0x00000000U 90 91 /* rotate x left n bits. */ 92 #define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n)))) 93 94 #define F0(x, y, z) ((x) ^ (y) ^ (z)) 95 #define F1(x, y, z) (((x) & (y)) | ((~x) & (z))) 96 #define F2(x, y, z) (((x) | (~y)) ^ (z)) 97 #define F3(x, y, z) (((x) & (z)) | ((y) & (~z))) 98 #define F4(x, y, z) ((x) ^ ((y) | (~z))) 99 100 #define R(a, b, c, d, e, Fj, Kj, sj, rj) \ 101 do { \ 102 a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \ 103 c = ROL(10, c); \ 104 } while(/*CONSTCOND*/0) 105 106 #define X(i) x[i] 107 108 static const u_char PADDING[64] = { 109 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 110 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 111 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 112 }; 113 114 #if !defined(_KERNEL) && defined(__weak_alias) 115 __weak_alias(RMD160Init,_RMD160Init) 116 __weak_alias(RMD160Update,_RMD160Update) 117 __weak_alias(RMD160Final,_RMD160Final) 118 __weak_alias(RMD160Transform,_RMD160Transform) 119 #endif 120 121 void 122 RMD160Init(RMD160_CTX *ctx) 123 { 124 ctx->count = 0; 125 ctx->state[0] = H0; 126 ctx->state[1] = H1; 127 ctx->state[2] = H2; 128 ctx->state[3] = H3; 129 ctx->state[4] = H4; 130 } 131 132 void 133 RMD160Update(RMD160_CTX *ctx, const u_char *input, uint32_t len) 134 { 135 uint32_t have, off, need; 136 137 have = (uint32_t)((ctx->count/8) % 64); 138 need = 64 - have; 139 ctx->count += 8 * len; 140 off = 0; 141 142 if (len >= need) { 143 if (have) { 144 memcpy(ctx->buffer + have, input, (size_t)need); 145 RMD160Transform(ctx->state, ctx->buffer); 146 off = need; 147 have = 0; 148 } 149 /* now the buffer is empty */ 150 while (off + 64 <= len) { 151 RMD160Transform(ctx->state, input+off); 152 off += 64; 153 } 154 } 155 if (off < len) 156 memcpy(ctx->buffer + have, input+off, (size_t)len-off); 157 } 158 159 void 160 RMD160Final(u_char digest[20], RMD160_CTX *ctx) 161 { 162 int i; 163 u_char size[8]; 164 uint32_t padlen; 165 166 PUT_64BIT_LE(size, ctx->count); 167 168 /* 169 * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes 170 * for the size 171 */ 172 padlen = (uint32_t)(64 - ((ctx->count/8) % 64)); 173 if (padlen < 1 + 8) 174 padlen += 64; 175 RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */ 176 RMD160Update(ctx, size, 8); 177 178 if (digest != NULL) 179 for (i = 0; i < 5; i++) 180 PUT_32BIT_LE(digest + i*4, ctx->state[i]); 181 182 memset(ctx, 0, sizeof (*ctx)); 183 } 184 185 void 186 RMD160Transform(uint32_t state[5], const u_char block[64]) 187 { 188 uint32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16]; 189 190 #if BYTE_ORDER == LITTLE_ENDIAN 191 memcpy(x, block, (size_t)64); 192 #else 193 int i; 194 195 for (i = 0; i < 16; i++) 196 x[i] = le32dec(block+i*4); 197 #endif 198 199 a = state[0]; 200 b = state[1]; 201 c = state[2]; 202 d = state[3]; 203 e = state[4]; 204 205 /* Round 1 */ 206 R(a, b, c, d, e, F0, K0, 11, 0); 207 R(e, a, b, c, d, F0, K0, 14, 1); 208 R(d, e, a, b, c, F0, K0, 15, 2); 209 R(c, d, e, a, b, F0, K0, 12, 3); 210 R(b, c, d, e, a, F0, K0, 5, 4); 211 R(a, b, c, d, e, F0, K0, 8, 5); 212 R(e, a, b, c, d, F0, K0, 7, 6); 213 R(d, e, a, b, c, F0, K0, 9, 7); 214 R(c, d, e, a, b, F0, K0, 11, 8); 215 R(b, c, d, e, a, F0, K0, 13, 9); 216 R(a, b, c, d, e, F0, K0, 14, 10); 217 R(e, a, b, c, d, F0, K0, 15, 11); 218 R(d, e, a, b, c, F0, K0, 6, 12); 219 R(c, d, e, a, b, F0, K0, 7, 13); 220 R(b, c, d, e, a, F0, K0, 9, 14); 221 R(a, b, c, d, e, F0, K0, 8, 15); /* #15 */ 222 /* Round 2 */ 223 R(e, a, b, c, d, F1, K1, 7, 7); 224 R(d, e, a, b, c, F1, K1, 6, 4); 225 R(c, d, e, a, b, F1, K1, 8, 13); 226 R(b, c, d, e, a, F1, K1, 13, 1); 227 R(a, b, c, d, e, F1, K1, 11, 10); 228 R(e, a, b, c, d, F1, K1, 9, 6); 229 R(d, e, a, b, c, F1, K1, 7, 15); 230 R(c, d, e, a, b, F1, K1, 15, 3); 231 R(b, c, d, e, a, F1, K1, 7, 12); 232 R(a, b, c, d, e, F1, K1, 12, 0); 233 R(e, a, b, c, d, F1, K1, 15, 9); 234 R(d, e, a, b, c, F1, K1, 9, 5); 235 R(c, d, e, a, b, F1, K1, 11, 2); 236 R(b, c, d, e, a, F1, K1, 7, 14); 237 R(a, b, c, d, e, F1, K1, 13, 11); 238 R(e, a, b, c, d, F1, K1, 12, 8); /* #31 */ 239 /* Round 3 */ 240 R(d, e, a, b, c, F2, K2, 11, 3); 241 R(c, d, e, a, b, F2, K2, 13, 10); 242 R(b, c, d, e, a, F2, K2, 6, 14); 243 R(a, b, c, d, e, F2, K2, 7, 4); 244 R(e, a, b, c, d, F2, K2, 14, 9); 245 R(d, e, a, b, c, F2, K2, 9, 15); 246 R(c, d, e, a, b, F2, K2, 13, 8); 247 R(b, c, d, e, a, F2, K2, 15, 1); 248 R(a, b, c, d, e, F2, K2, 14, 2); 249 R(e, a, b, c, d, F2, K2, 8, 7); 250 R(d, e, a, b, c, F2, K2, 13, 0); 251 R(c, d, e, a, b, F2, K2, 6, 6); 252 R(b, c, d, e, a, F2, K2, 5, 13); 253 R(a, b, c, d, e, F2, K2, 12, 11); 254 R(e, a, b, c, d, F2, K2, 7, 5); 255 R(d, e, a, b, c, F2, K2, 5, 12); /* #47 */ 256 /* Round 4 */ 257 R(c, d, e, a, b, F3, K3, 11, 1); 258 R(b, c, d, e, a, F3, K3, 12, 9); 259 R(a, b, c, d, e, F3, K3, 14, 11); 260 R(e, a, b, c, d, F3, K3, 15, 10); 261 R(d, e, a, b, c, F3, K3, 14, 0); 262 R(c, d, e, a, b, F3, K3, 15, 8); 263 R(b, c, d, e, a, F3, K3, 9, 12); 264 R(a, b, c, d, e, F3, K3, 8, 4); 265 R(e, a, b, c, d, F3, K3, 9, 13); 266 R(d, e, a, b, c, F3, K3, 14, 3); 267 R(c, d, e, a, b, F3, K3, 5, 7); 268 R(b, c, d, e, a, F3, K3, 6, 15); 269 R(a, b, c, d, e, F3, K3, 8, 14); 270 R(e, a, b, c, d, F3, K3, 6, 5); 271 R(d, e, a, b, c, F3, K3, 5, 6); 272 R(c, d, e, a, b, F3, K3, 12, 2); /* #63 */ 273 /* Round 5 */ 274 R(b, c, d, e, a, F4, K4, 9, 4); 275 R(a, b, c, d, e, F4, K4, 15, 0); 276 R(e, a, b, c, d, F4, K4, 5, 5); 277 R(d, e, a, b, c, F4, K4, 11, 9); 278 R(c, d, e, a, b, F4, K4, 6, 7); 279 R(b, c, d, e, a, F4, K4, 8, 12); 280 R(a, b, c, d, e, F4, K4, 13, 2); 281 R(e, a, b, c, d, F4, K4, 12, 10); 282 R(d, e, a, b, c, F4, K4, 5, 14); 283 R(c, d, e, a, b, F4, K4, 12, 1); 284 R(b, c, d, e, a, F4, K4, 13, 3); 285 R(a, b, c, d, e, F4, K4, 14, 8); 286 R(e, a, b, c, d, F4, K4, 11, 11); 287 R(d, e, a, b, c, F4, K4, 8, 6); 288 R(c, d, e, a, b, F4, K4, 5, 15); 289 R(b, c, d, e, a, F4, K4, 6, 13); /* #79 */ 290 291 aa = a ; bb = b; cc = c; dd = d; ee = e; 292 293 a = state[0]; 294 b = state[1]; 295 c = state[2]; 296 d = state[3]; 297 e = state[4]; 298 299 /* Parallel round 1 */ 300 R(a, b, c, d, e, F4, KK0, 8, 5); 301 R(e, a, b, c, d, F4, KK0, 9, 14); 302 R(d, e, a, b, c, F4, KK0, 9, 7); 303 R(c, d, e, a, b, F4, KK0, 11, 0); 304 R(b, c, d, e, a, F4, KK0, 13, 9); 305 R(a, b, c, d, e, F4, KK0, 15, 2); 306 R(e, a, b, c, d, F4, KK0, 15, 11); 307 R(d, e, a, b, c, F4, KK0, 5, 4); 308 R(c, d, e, a, b, F4, KK0, 7, 13); 309 R(b, c, d, e, a, F4, KK0, 7, 6); 310 R(a, b, c, d, e, F4, KK0, 8, 15); 311 R(e, a, b, c, d, F4, KK0, 11, 8); 312 R(d, e, a, b, c, F4, KK0, 14, 1); 313 R(c, d, e, a, b, F4, KK0, 14, 10); 314 R(b, c, d, e, a, F4, KK0, 12, 3); 315 R(a, b, c, d, e, F4, KK0, 6, 12); /* #15 */ 316 /* Parallel round 2 */ 317 R(e, a, b, c, d, F3, KK1, 9, 6); 318 R(d, e, a, b, c, F3, KK1, 13, 11); 319 R(c, d, e, a, b, F3, KK1, 15, 3); 320 R(b, c, d, e, a, F3, KK1, 7, 7); 321 R(a, b, c, d, e, F3, KK1, 12, 0); 322 R(e, a, b, c, d, F3, KK1, 8, 13); 323 R(d, e, a, b, c, F3, KK1, 9, 5); 324 R(c, d, e, a, b, F3, KK1, 11, 10); 325 R(b, c, d, e, a, F3, KK1, 7, 14); 326 R(a, b, c, d, e, F3, KK1, 7, 15); 327 R(e, a, b, c, d, F3, KK1, 12, 8); 328 R(d, e, a, b, c, F3, KK1, 7, 12); 329 R(c, d, e, a, b, F3, KK1, 6, 4); 330 R(b, c, d, e, a, F3, KK1, 15, 9); 331 R(a, b, c, d, e, F3, KK1, 13, 1); 332 R(e, a, b, c, d, F3, KK1, 11, 2); /* #31 */ 333 /* Parallel round 3 */ 334 R(d, e, a, b, c, F2, KK2, 9, 15); 335 R(c, d, e, a, b, F2, KK2, 7, 5); 336 R(b, c, d, e, a, F2, KK2, 15, 1); 337 R(a, b, c, d, e, F2, KK2, 11, 3); 338 R(e, a, b, c, d, F2, KK2, 8, 7); 339 R(d, e, a, b, c, F2, KK2, 6, 14); 340 R(c, d, e, a, b, F2, KK2, 6, 6); 341 R(b, c, d, e, a, F2, KK2, 14, 9); 342 R(a, b, c, d, e, F2, KK2, 12, 11); 343 R(e, a, b, c, d, F2, KK2, 13, 8); 344 R(d, e, a, b, c, F2, KK2, 5, 12); 345 R(c, d, e, a, b, F2, KK2, 14, 2); 346 R(b, c, d, e, a, F2, KK2, 13, 10); 347 R(a, b, c, d, e, F2, KK2, 13, 0); 348 R(e, a, b, c, d, F2, KK2, 7, 4); 349 R(d, e, a, b, c, F2, KK2, 5, 13); /* #47 */ 350 /* Parallel round 4 */ 351 R(c, d, e, a, b, F1, KK3, 15, 8); 352 R(b, c, d, e, a, F1, KK3, 5, 6); 353 R(a, b, c, d, e, F1, KK3, 8, 4); 354 R(e, a, b, c, d, F1, KK3, 11, 1); 355 R(d, e, a, b, c, F1, KK3, 14, 3); 356 R(c, d, e, a, b, F1, KK3, 14, 11); 357 R(b, c, d, e, a, F1, KK3, 6, 15); 358 R(a, b, c, d, e, F1, KK3, 14, 0); 359 R(e, a, b, c, d, F1, KK3, 6, 5); 360 R(d, e, a, b, c, F1, KK3, 9, 12); 361 R(c, d, e, a, b, F1, KK3, 12, 2); 362 R(b, c, d, e, a, F1, KK3, 9, 13); 363 R(a, b, c, d, e, F1, KK3, 12, 9); 364 R(e, a, b, c, d, F1, KK3, 5, 7); 365 R(d, e, a, b, c, F1, KK3, 15, 10); 366 R(c, d, e, a, b, F1, KK3, 8, 14); /* #63 */ 367 /* Parallel round 5 */ 368 R(b, c, d, e, a, F0, KK4, 8, 12); 369 R(a, b, c, d, e, F0, KK4, 5, 15); 370 R(e, a, b, c, d, F0, KK4, 12, 10); 371 R(d, e, a, b, c, F0, KK4, 9, 4); 372 R(c, d, e, a, b, F0, KK4, 12, 1); 373 R(b, c, d, e, a, F0, KK4, 5, 5); 374 R(a, b, c, d, e, F0, KK4, 14, 8); 375 R(e, a, b, c, d, F0, KK4, 6, 7); 376 R(d, e, a, b, c, F0, KK4, 8, 6); 377 R(c, d, e, a, b, F0, KK4, 13, 2); 378 R(b, c, d, e, a, F0, KK4, 6, 13); 379 R(a, b, c, d, e, F0, KK4, 5, 14); 380 R(e, a, b, c, d, F0, KK4, 15, 0); 381 R(d, e, a, b, c, F0, KK4, 13, 3); 382 R(c, d, e, a, b, F0, KK4, 11, 9); 383 R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */ 384 385 t = state[1] + cc + d; 386 state[1] = state[2] + dd + e; 387 state[2] = state[3] + ee + a; 388 state[3] = state[4] + aa + b; 389 state[4] = state[0] + bb + c; 390 state[0] = t; 391 } 392
Indexes created Mon Sep 29 21:09:56 GMT 2025