common/lib/libc/hash/rmd160/rmd160.c

   1 /*      $NetBSD: rmd160.c,v 1.5 2009/08/21 09:40:51 skrll 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 1.5 2009/08/21 09:40:51 skrll 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 1.5 2009/08/21 09:40:51 skrll 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(_STANDALONE)
 115 #if defined(__weak_alias)
 116 __weak_alias(RMD160Init,_RMD160Init)
 117 __weak_alias(RMD160Update,_RMD160Update)
 118 __weak_alias(RMD160Final,_RMD160Final)
 119 __weak_alias(RMD160Transform,_RMD160Transform)
 120 #endif
 121 #endif
 122
 123 void
 124 RMD160Init(RMD160_CTX *ctx)
 125 {
 126         ctx->count = 0;
 127         ctx->state[0] = H0;
 128         ctx->state[1] = H1;
 129         ctx->state[2] = H2;
 130         ctx->state[3] = H3;
 131         ctx->state[4] = H4;
 132 }
 133
 134 void
 135 RMD160Update(RMD160_CTX *ctx, const u_char *input, uint32_t len)
 136 {
 137         uint32_t have, off, need;
 138
 139         have = (uint32_t)((ctx->count/8) % 64);
 140         need = 64 - have;
 141         ctx->count += 8 * len;
 142         off = 0;
 143
 144         if (len >= need) {
 145                 if (have) {
 146                         memcpy(ctx->buffer + have, input, (size_t)need);
 147                         RMD160Transform(ctx->state, ctx->buffer);
 148                         off = need;
 149                         have = 0;
 150                 }
 151                 /* now the buffer is empty */
 152                 while (off + 64 <= len) {
 153                         RMD160Transform(ctx->state, input+off);
 154                         off += 64;
 155                 }
 156         }
 157         if (off < len)
 158                 memcpy(ctx->buffer + have, input+off, (size_t)len-off);
 159 }
 160
 161 void
 162 RMD160Final(u_char digest[20], RMD160_CTX *ctx)
 163 {
 164         int i;
 165         u_char size[8];
 166         uint32_t padlen;
 167
 168         PUT_64BIT_LE(size, ctx->count);
 169
 170         /*
 171          * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes
 172          * for the size
 173          */
 174         padlen = (uint32_t)(64 - ((ctx->count/8) % 64));
 175         if (padlen < 1 + 8)
 176                 padlen += 64;
 177         RMD160Update(ctx, PADDING, padlen - 8);         /* padlen - 8 <= 64 */
 178         RMD160Update(ctx, size, 8);
 179
 180         if (digest != NULL)
 181                 for (i = 0; i < 5; i++)
 182                         PUT_32BIT_LE(digest + i*4, ctx->state[i]);
 183
 184         memset(ctx, 0, sizeof (*ctx));
 185 }
 186
 187 void
 188 RMD160Transform(uint32_t state[5], const u_char block[64])
 189 {
 190         uint32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16];
 191
 192 #if BYTE_ORDER == LITTLE_ENDIAN
 193         memcpy(x, block, (size_t)64);
 194 #else
 195         int i;
 196
 197         for (i = 0; i < 16; i++)
 198                 x[i] = le32dec(block+i*4);
 199 #endif
 200
 201         a = state[0];
 202         b = state[1];
 203         c = state[2];
 204         d = state[3];
 205         e = state[4];
 206
 207         /* Round 1 */
 208         R(a, b, c, d, e, F0, K0, 11,  0);
 209         R(e, a, b, c, d, F0, K0, 14,  1);
 210         R(d, e, a, b, c, F0, K0, 15,  2);
 211         R(c, d, e, a, b, F0, K0, 12,  3);
 212         R(b, c, d, e, a, F0, K0,  5,  4);
 213         R(a, b, c, d, e, F0, K0,  8,  5);
 214         R(e, a, b, c, d, F0, K0,  7,  6);
 215         R(d, e, a, b, c, F0, K0,  9,  7);
 216         R(c, d, e, a, b, F0, K0, 11,  8);
 217         R(b, c, d, e, a, F0, K0, 13,  9);
 218         R(a, b, c, d, e, F0, K0, 14, 10);
 219         R(e, a, b, c, d, F0, K0, 15, 11);
 220         R(d, e, a, b, c, F0, K0,  6, 12);
 221         R(c, d, e, a, b, F0, K0,  7, 13);
 222         R(b, c, d, e, a, F0, K0,  9, 14);
 223         R(a, b, c, d, e, F0, K0,  8, 15); /* #15 */
 224         /* Round 2 */
 225         R(e, a, b, c, d, F1, K1,  7,  7);
 226         R(d, e, a, b, c, F1, K1,  6,  4);
 227         R(c, d, e, a, b, F1, K1,  8, 13);
 228         R(b, c, d, e, a, F1, K1, 13,  1);
 229         R(a, b, c, d, e, F1, K1, 11, 10);
 230         R(e, a, b, c, d, F1, K1,  9,  6);
 231         R(d, e, a, b, c, F1, K1,  7, 15);
 232         R(c, d, e, a, b, F1, K1, 15,  3);
 233         R(b, c, d, e, a, F1, K1,  7, 12);
 234         R(a, b, c, d, e, F1, K1, 12,  0);
 235         R(e, a, b, c, d, F1, K1, 15,  9);
 236         R(d, e, a, b, c, F1, K1,  9,  5);
 237         R(c, d, e, a, b, F1, K1, 11,  2);
 238         R(b, c, d, e, a, F1, K1,  7, 14);
 239         R(a, b, c, d, e, F1, K1, 13, 11);
 240         R(e, a, b, c, d, F1, K1, 12,  8); /* #31 */
 241         /* Round 3 */
 242         R(d, e, a, b, c, F2, K2, 11,  3);
 243         R(c, d, e, a, b, F2, K2, 13, 10);
 244         R(b, c, d, e, a, F2, K2,  6, 14);
 245         R(a, b, c, d, e, F2, K2,  7,  4);
 246         R(e, a, b, c, d, F2, K2, 14,  9);
 247         R(d, e, a, b, c, F2, K2,  9, 15);
 248         R(c, d, e, a, b, F2, K2, 13,  8);
 249         R(b, c, d, e, a, F2, K2, 15,  1);
 250         R(a, b, c, d, e, F2, K2, 14,  2);
 251         R(e, a, b, c, d, F2, K2,  8,  7);
 252         R(d, e, a, b, c, F2, K2, 13,  0);
 253         R(c, d, e, a, b, F2, K2,  6,  6);
 254         R(b, c, d, e, a, F2, K2,  5, 13);
 255         R(a, b, c, d, e, F2, K2, 12, 11);
 256         R(e, a, b, c, d, F2, K2,  7,  5);
 257         R(d, e, a, b, c, F2, K2,  5, 12); /* #47 */
 258         /* Round 4 */
 259         R(c, d, e, a, b, F3, K3, 11,  1);
 260         R(b, c, d, e, a, F3, K3, 12,  9);
 261         R(a, b, c, d, e, F3, K3, 14, 11);
 262         R(e, a, b, c, d, F3, K3, 15, 10);
 263         R(d, e, a, b, c, F3, K3, 14,  0);
 264         R(c, d, e, a, b, F3, K3, 15,  8);
 265         R(b, c, d, e, a, F3, K3,  9, 12);
 266         R(a, b, c, d, e, F3, K3,  8,  4);
 267         R(e, a, b, c, d, F3, K3,  9, 13);
 268         R(d, e, a, b, c, F3, K3, 14,  3);
 269         R(c, d, e, a, b, F3, K3,  5,  7);
 270         R(b, c, d, e, a, F3, K3,  6, 15);
 271         R(a, b, c, d, e, F3, K3,  8, 14);
 272         R(e, a, b, c, d, F3, K3,  6,  5);
 273         R(d, e, a, b, c, F3, K3,  5,  6);
 274         R(c, d, e, a, b, F3, K3, 12,  2); /* #63 */
 275         /* Round 5 */
 276         R(b, c, d, e, a, F4, K4,  9,  4);
 277         R(a, b, c, d, e, F4, K4, 15,  0);
 278         R(e, a, b, c, d, F4, K4,  5,  5);
 279         R(d, e, a, b, c, F4, K4, 11,  9);
 280         R(c, d, e, a, b, F4, K4,  6,  7);
 281         R(b, c, d, e, a, F4, K4,  8, 12);
 282         R(a, b, c, d, e, F4, K4, 13,  2);
 283         R(e, a, b, c, d, F4, K4, 12, 10);
 284         R(d, e, a, b, c, F4, K4,  5, 14);
 285         R(c, d, e, a, b, F4, K4, 12,  1);
 286         R(b, c, d, e, a, F4, K4, 13,  3);
 287         R(a, b, c, d, e, F4, K4, 14,  8);
 288         R(e, a, b, c, d, F4, K4, 11, 11);
 289         R(d, e, a, b, c, F4, K4,  8,  6);
 290         R(c, d, e, a, b, F4, K4,  5, 15);
 291         R(b, c, d, e, a, F4, K4,  6, 13); /* #79 */
 292
 293         aa = a ; bb = b; cc = c; dd = d; ee = e;
 294
 295         a = state[0];
 296         b = state[1];
 297         c = state[2];
 298         d = state[3];
 299         e = state[4];
 300
 301         /* Parallel round 1 */
 302         R(a, b, c, d, e, F4, KK0,  8,  5);
 303         R(e, a, b, c, d, F4, KK0,  9, 14);
 304         R(d, e, a, b, c, F4, KK0,  9,  7);
 305         R(c, d, e, a, b, F4, KK0, 11,  0);
 306         R(b, c, d, e, a, F4, KK0, 13,  9);
 307         R(a, b, c, d, e, F4, KK0, 15,  2);
 308         R(e, a, b, c, d, F4, KK0, 15, 11);
 309         R(d, e, a, b, c, F4, KK0,  5,  4);
 310         R(c, d, e, a, b, F4, KK0,  7, 13);
 311         R(b, c, d, e, a, F4, KK0,  7,  6);
 312         R(a, b, c, d, e, F4, KK0,  8, 15);
 313         R(e, a, b, c, d, F4, KK0, 11,  8);
 314         R(d, e, a, b, c, F4, KK0, 14,  1);
 315         R(c, d, e, a, b, F4, KK0, 14, 10);
 316         R(b, c, d, e, a, F4, KK0, 12,  3);
 317         R(a, b, c, d, e, F4, KK0,  6, 12); /* #15 */
 318         /* Parallel round 2 */
 319         R(e, a, b, c, d, F3, KK1,  9,  6);
 320         R(d, e, a, b, c, F3, KK1, 13, 11);
 321         R(c, d, e, a, b, F3, KK1, 15,  3);
 322         R(b, c, d, e, a, F3, KK1,  7,  7);
 323         R(a, b, c, d, e, F3, KK1, 12,  0);
 324         R(e, a, b, c, d, F3, KK1,  8, 13);
 325         R(d, e, a, b, c, F3, KK1,  9,  5);
 326         R(c, d, e, a, b, F3, KK1, 11, 10);
 327         R(b, c, d, e, a, F3, KK1,  7, 14);
 328         R(a, b, c, d, e, F3, KK1,  7, 15);
 329         R(e, a, b, c, d, F3, KK1, 12,  8);
 330         R(d, e, a, b, c, F3, KK1,  7, 12);
 331         R(c, d, e, a, b, F3, KK1,  6,  4);
 332         R(b, c, d, e, a, F3, KK1, 15,  9);
 333         R(a, b, c, d, e, F3, KK1, 13,  1);
 334         R(e, a, b, c, d, F3, KK1, 11,  2); /* #31 */
 335         /* Parallel round 3 */
 336         R(d, e, a, b, c, F2, KK2,  9, 15);
 337         R(c, d, e, a, b, F2, KK2,  7,  5);
 338         R(b, c, d, e, a, F2, KK2, 15,  1);
 339         R(a, b, c, d, e, F2, KK2, 11,  3);
 340         R(e, a, b, c, d, F2, KK2,  8,  7);
 341         R(d, e, a, b, c, F2, KK2,  6, 14);
 342         R(c, d, e, a, b, F2, KK2,  6,  6);
 343         R(b, c, d, e, a, F2, KK2, 14,  9);
 344         R(a, b, c, d, e, F2, KK2, 12, 11);
 345         R(e, a, b, c, d, F2, KK2, 13,  8);
 346         R(d, e, a, b, c, F2, KK2,  5, 12);
 347         R(c, d, e, a, b, F2, KK2, 14,  2);
 348         R(b, c, d, e, a, F2, KK2, 13, 10);
 349         R(a, b, c, d, e, F2, KK2, 13,  0);
 350         R(e, a, b, c, d, F2, KK2,  7,  4);
 351         R(d, e, a, b, c, F2, KK2,  5, 13); /* #47 */
 352         /* Parallel round 4 */
 353         R(c, d, e, a, b, F1, KK3, 15,  8);
 354         R(b, c, d, e, a, F1, KK3,  5,  6);
 355         R(a, b, c, d, e, F1, KK3,  8,  4);
 356         R(e, a, b, c, d, F1, KK3, 11,  1);
 357         R(d, e, a, b, c, F1, KK3, 14,  3);
 358         R(c, d, e, a, b, F1, KK3, 14, 11);
 359         R(b, c, d, e, a, F1, KK3,  6, 15);
 360         R(a, b, c, d, e, F1, KK3, 14,  0);
 361         R(e, a, b, c, d, F1, KK3,  6,  5);
 362         R(d, e, a, b, c, F1, KK3,  9, 12);
 363         R(c, d, e, a, b, F1, KK3, 12,  2);
 364         R(b, c, d, e, a, F1, KK3,  9, 13);
 365         R(a, b, c, d, e, F1, KK3, 12,  9);
 366         R(e, a, b, c, d, F1, KK3,  5,  7);
 367         R(d, e, a, b, c, F1, KK3, 15, 10);
 368         R(c, d, e, a, b, F1, KK3,  8, 14); /* #63 */
 369         /* Parallel round 5 */
 370         R(b, c, d, e, a, F0, KK4,  8, 12);
 371         R(a, b, c, d, e, F0, KK4,  5, 15);
 372         R(e, a, b, c, d, F0, KK4, 12, 10);
 373         R(d, e, a, b, c, F0, KK4,  9,  4);
 374         R(c, d, e, a, b, F0, KK4, 12,  1);
 375         R(b, c, d, e, a, F0, KK4,  5,  5);
 376         R(a, b, c, d, e, F0, KK4, 14,  8);
 377         R(e, a, b, c, d, F0, KK4,  6,  7);
 378         R(d, e, a, b, c, F0, KK4,  8,  6);
 379         R(c, d, e, a, b, F0, KK4, 13,  2);
 380         R(b, c, d, e, a, F0, KK4,  6, 13);
 381         R(a, b, c, d, e, F0, KK4,  5, 14);
 382         R(e, a, b, c, d, F0, KK4, 15,  0);
 383         R(d, e, a, b, c, F0, KK4, 13,  3);
 384         R(c, d, e, a, b, F0, KK4, 11,  9);
 385         R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */
 386
 387         t =        state[1] + cc + d;
 388         state[1] = state[2] + dd + e;
 389         state[2] = state[3] + ee + a;
 390         state[3] = state[4] + aa + b;
 391         state[4] = state[0] + bb + c;
 392         state[0] = t;
 393 }