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FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/rmd160.c

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    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 __FBSDID("$FreeBSD: releng/8.1/sys/opencrypto/rmd160.c 199583 2009-11-20 15:27:52Z jhb $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/endian.h>
   38 #include <opencrypto/rmd160.h>
   39 
   40 #define PUT_64BIT_LE(cp, value) do { \
   41         (cp)[7] = (value) >> 56; \
   42         (cp)[6] = (value) >> 48; \
   43         (cp)[5] = (value) >> 40; \
   44         (cp)[4] = (value) >> 32; \
   45         (cp)[3] = (value) >> 24; \
   46         (cp)[2] = (value) >> 16; \
   47         (cp)[1] = (value) >> 8; \
   48         (cp)[0] = (value); } while (0)
   49 
   50 #define PUT_32BIT_LE(cp, value) do { \
   51         (cp)[3] = (value) >> 24; \
   52         (cp)[2] = (value) >> 16; \
   53         (cp)[1] = (value) >> 8; \
   54         (cp)[0] = (value); } while (0)
   55 
   56 #define H0      0x67452301U
   57 #define H1      0xEFCDAB89U
   58 #define H2      0x98BADCFEU
   59 #define H3      0x10325476U
   60 #define H4      0xC3D2E1F0U
   61 
   62 #define K0      0x00000000U
   63 #define K1      0x5A827999U
   64 #define K2      0x6ED9EBA1U
   65 #define K3      0x8F1BBCDCU
   66 #define K4      0xA953FD4EU
   67 
   68 #define KK0     0x50A28BE6U
   69 #define KK1     0x5C4DD124U
   70 #define KK2     0x6D703EF3U
   71 #define KK3     0x7A6D76E9U
   72 #define KK4     0x00000000U
   73 
   74 /* rotate x left n bits.  */
   75 #define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n))))
   76 
   77 #define F0(x, y, z) ((x) ^ (y) ^ (z))
   78 #define F1(x, y, z) (((x) & (y)) | ((~x) & (z)))
   79 #define F2(x, y, z) (((x) | (~y)) ^ (z))
   80 #define F3(x, y, z) (((x) & (z)) | ((y) & (~z)))
   81 #define F4(x, y, z) ((x) ^ ((y) | (~z)))
   82 
   83 #define R(a, b, c, d, e, Fj, Kj, sj, rj) \
   84         do { \
   85                 a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \
   86                 c = ROL(10, c); \
   87         } while(0)
   88 
   89 #define X(i)    x[i]
   90 
   91 static u_char PADDING[64] = {
   92         0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   93         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   94         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
   95 };
   96 
   97 void
   98 RMD160Init(RMD160_CTX *ctx)
   99 {
  100         ctx->count = 0;
  101         ctx->state[0] = H0;
  102         ctx->state[1] = H1;
  103         ctx->state[2] = H2;
  104         ctx->state[3] = H3;
  105         ctx->state[4] = H4;
  106 }
  107 
  108 void
  109 RMD160Update(RMD160_CTX *ctx, const u_char *input, u_int32_t len)
  110 {
  111         u_int32_t have, off, need;
  112 
  113         have = (ctx->count/8) % 64;
  114         need = 64 - have;
  115         ctx->count += 8 * len;
  116         off = 0;
  117 
  118         if (len >= need) {
  119                 if (have) {
  120                         memcpy(ctx->buffer + have, input, need);
  121                         RMD160Transform(ctx->state, ctx->buffer);
  122                         off = need;
  123                         have = 0;
  124                 }
  125                 /* now the buffer is empty */
  126                 while (off + 64 <= len) {
  127                         RMD160Transform(ctx->state, input+off);
  128                         off += 64;
  129                 }
  130         }
  131         if (off < len)
  132                 memcpy(ctx->buffer + have, input+off, len-off);
  133 }
  134 
  135 void
  136 RMD160Final(u_char digest[20], RMD160_CTX *ctx)
  137 {
  138         int i;
  139         u_char size[8];
  140         u_int32_t padlen;
  141 
  142         PUT_64BIT_LE(size, ctx->count);
  143 
  144         /*
  145          * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes
  146          * for the size
  147          */
  148         padlen = 64 - ((ctx->count/8) % 64);
  149         if (padlen < 1 + 8)
  150                 padlen += 64;
  151         RMD160Update(ctx, PADDING, padlen - 8);         /* padlen - 8 <= 64 */
  152         RMD160Update(ctx, size, 8);
  153 
  154         if (digest != NULL)
  155                 for (i = 0; i < 5; i++)
  156                         PUT_32BIT_LE(digest + i*4, ctx->state[i]);
  157 
  158         memset(ctx, 0, sizeof (*ctx));
  159 }
  160 
  161 void
  162 RMD160Transform(u_int32_t state[5], const u_char block[64])
  163 {
  164         u_int32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16];
  165 
  166 #if BYTE_ORDER == LITTLE_ENDIAN
  167         memcpy(x, block, 64);
  168 #else
  169         int i;
  170 
  171         for (i = 0; i < 16; i++)
  172                 x[i] = bswap32(*(const u_int32_t*)(block+i*4));
  173 #endif
  174 
  175         a = state[0];
  176         b = state[1];
  177         c = state[2];
  178         d = state[3];
  179         e = state[4];
  180 
  181         /* Round 1 */
  182         R(a, b, c, d, e, F0, K0, 11,  0);
  183         R(e, a, b, c, d, F0, K0, 14,  1);
  184         R(d, e, a, b, c, F0, K0, 15,  2);
  185         R(c, d, e, a, b, F0, K0, 12,  3);
  186         R(b, c, d, e, a, F0, K0,  5,  4);
  187         R(a, b, c, d, e, F0, K0,  8,  5);
  188         R(e, a, b, c, d, F0, K0,  7,  6);
  189         R(d, e, a, b, c, F0, K0,  9,  7);
  190         R(c, d, e, a, b, F0, K0, 11,  8);
  191         R(b, c, d, e, a, F0, K0, 13,  9);
  192         R(a, b, c, d, e, F0, K0, 14, 10);
  193         R(e, a, b, c, d, F0, K0, 15, 11);
  194         R(d, e, a, b, c, F0, K0,  6, 12);
  195         R(c, d, e, a, b, F0, K0,  7, 13);
  196         R(b, c, d, e, a, F0, K0,  9, 14);
  197         R(a, b, c, d, e, F0, K0,  8, 15); /* #15 */
  198         /* Round 2 */
  199         R(e, a, b, c, d, F1, K1,  7,  7);
  200         R(d, e, a, b, c, F1, K1,  6,  4);
  201         R(c, d, e, a, b, F1, K1,  8, 13);
  202         R(b, c, d, e, a, F1, K1, 13,  1);
  203         R(a, b, c, d, e, F1, K1, 11, 10);
  204         R(e, a, b, c, d, F1, K1,  9,  6);
  205         R(d, e, a, b, c, F1, K1,  7, 15);
  206         R(c, d, e, a, b, F1, K1, 15,  3);
  207         R(b, c, d, e, a, F1, K1,  7, 12);
  208         R(a, b, c, d, e, F1, K1, 12,  0);
  209         R(e, a, b, c, d, F1, K1, 15,  9);
  210         R(d, e, a, b, c, F1, K1,  9,  5);
  211         R(c, d, e, a, b, F1, K1, 11,  2);
  212         R(b, c, d, e, a, F1, K1,  7, 14);
  213         R(a, b, c, d, e, F1, K1, 13, 11);
  214         R(e, a, b, c, d, F1, K1, 12,  8); /* #31 */
  215         /* Round 3 */
  216         R(d, e, a, b, c, F2, K2, 11,  3);
  217         R(c, d, e, a, b, F2, K2, 13, 10);
  218         R(b, c, d, e, a, F2, K2,  6, 14);
  219         R(a, b, c, d, e, F2, K2,  7,  4);
  220         R(e, a, b, c, d, F2, K2, 14,  9);
  221         R(d, e, a, b, c, F2, K2,  9, 15);
  222         R(c, d, e, a, b, F2, K2, 13,  8);
  223         R(b, c, d, e, a, F2, K2, 15,  1);
  224         R(a, b, c, d, e, F2, K2, 14,  2);
  225         R(e, a, b, c, d, F2, K2,  8,  7);
  226         R(d, e, a, b, c, F2, K2, 13,  0);
  227         R(c, d, e, a, b, F2, K2,  6,  6);
  228         R(b, c, d, e, a, F2, K2,  5, 13);
  229         R(a, b, c, d, e, F2, K2, 12, 11);
  230         R(e, a, b, c, d, F2, K2,  7,  5);
  231         R(d, e, a, b, c, F2, K2,  5, 12); /* #47 */
  232         /* Round 4 */
  233         R(c, d, e, a, b, F3, K3, 11,  1);
  234         R(b, c, d, e, a, F3, K3, 12,  9);
  235         R(a, b, c, d, e, F3, K3, 14, 11);
  236         R(e, a, b, c, d, F3, K3, 15, 10);
  237         R(d, e, a, b, c, F3, K3, 14,  0);
  238         R(c, d, e, a, b, F3, K3, 15,  8);
  239         R(b, c, d, e, a, F3, K3,  9, 12);
  240         R(a, b, c, d, e, F3, K3,  8,  4);
  241         R(e, a, b, c, d, F3, K3,  9, 13);
  242         R(d, e, a, b, c, F3, K3, 14,  3);
  243         R(c, d, e, a, b, F3, K3,  5,  7);
  244         R(b, c, d, e, a, F3, K3,  6, 15);
  245         R(a, b, c, d, e, F3, K3,  8, 14);
  246         R(e, a, b, c, d, F3, K3,  6,  5);
  247         R(d, e, a, b, c, F3, K3,  5,  6);
  248         R(c, d, e, a, b, F3, K3, 12,  2); /* #63 */
  249         /* Round 5 */
  250         R(b, c, d, e, a, F4, K4,  9,  4);
  251         R(a, b, c, d, e, F4, K4, 15,  0);
  252         R(e, a, b, c, d, F4, K4,  5,  5);
  253         R(d, e, a, b, c, F4, K4, 11,  9);
  254         R(c, d, e, a, b, F4, K4,  6,  7);
  255         R(b, c, d, e, a, F4, K4,  8, 12);
  256         R(a, b, c, d, e, F4, K4, 13,  2);
  257         R(e, a, b, c, d, F4, K4, 12, 10);
  258         R(d, e, a, b, c, F4, K4,  5, 14);
  259         R(c, d, e, a, b, F4, K4, 12,  1);
  260         R(b, c, d, e, a, F4, K4, 13,  3);
  261         R(a, b, c, d, e, F4, K4, 14,  8);
  262         R(e, a, b, c, d, F4, K4, 11, 11);
  263         R(d, e, a, b, c, F4, K4,  8,  6);
  264         R(c, d, e, a, b, F4, K4,  5, 15);
  265         R(b, c, d, e, a, F4, K4,  6, 13); /* #79 */
  266 
  267         aa = a ; bb = b; cc = c; dd = d; ee = e;
  268 
  269         a = state[0];
  270         b = state[1];
  271         c = state[2];
  272         d = state[3];
  273         e = state[4];
  274 
  275         /* Parallel round 1 */
  276         R(a, b, c, d, e, F4, KK0,  8,  5);
  277         R(e, a, b, c, d, F4, KK0,  9, 14);
  278         R(d, e, a, b, c, F4, KK0,  9,  7);
  279         R(c, d, e, a, b, F4, KK0, 11,  0);
  280         R(b, c, d, e, a, F4, KK0, 13,  9);
  281         R(a, b, c, d, e, F4, KK0, 15,  2);
  282         R(e, a, b, c, d, F4, KK0, 15, 11);
  283         R(d, e, a, b, c, F4, KK0,  5,  4);
  284         R(c, d, e, a, b, F4, KK0,  7, 13);
  285         R(b, c, d, e, a, F4, KK0,  7,  6);
  286         R(a, b, c, d, e, F4, KK0,  8, 15);
  287         R(e, a, b, c, d, F4, KK0, 11,  8);
  288         R(d, e, a, b, c, F4, KK0, 14,  1);
  289         R(c, d, e, a, b, F4, KK0, 14, 10);
  290         R(b, c, d, e, a, F4, KK0, 12,  3);
  291         R(a, b, c, d, e, F4, KK0,  6, 12); /* #15 */
  292         /* Parallel round 2 */
  293         R(e, a, b, c, d, F3, KK1,  9,  6);
  294         R(d, e, a, b, c, F3, KK1, 13, 11);
  295         R(c, d, e, a, b, F3, KK1, 15,  3);
  296         R(b, c, d, e, a, F3, KK1,  7,  7);
  297         R(a, b, c, d, e, F3, KK1, 12,  0);
  298         R(e, a, b, c, d, F3, KK1,  8, 13);
  299         R(d, e, a, b, c, F3, KK1,  9,  5);
  300         R(c, d, e, a, b, F3, KK1, 11, 10);
  301         R(b, c, d, e, a, F3, KK1,  7, 14);
  302         R(a, b, c, d, e, F3, KK1,  7, 15);
  303         R(e, a, b, c, d, F3, KK1, 12,  8);
  304         R(d, e, a, b, c, F3, KK1,  7, 12);
  305         R(c, d, e, a, b, F3, KK1,  6,  4);
  306         R(b, c, d, e, a, F3, KK1, 15,  9);
  307         R(a, b, c, d, e, F3, KK1, 13,  1);
  308         R(e, a, b, c, d, F3, KK1, 11,  2); /* #31 */
  309         /* Parallel round 3 */
  310         R(d, e, a, b, c, F2, KK2,  9, 15);
  311         R(c, d, e, a, b, F2, KK2,  7,  5);
  312         R(b, c, d, e, a, F2, KK2, 15,  1);
  313         R(a, b, c, d, e, F2, KK2, 11,  3);
  314         R(e, a, b, c, d, F2, KK2,  8,  7);
  315         R(d, e, a, b, c, F2, KK2,  6, 14);
  316         R(c, d, e, a, b, F2, KK2,  6,  6);
  317         R(b, c, d, e, a, F2, KK2, 14,  9);
  318         R(a, b, c, d, e, F2, KK2, 12, 11);
  319         R(e, a, b, c, d, F2, KK2, 13,  8);
  320         R(d, e, a, b, c, F2, KK2,  5, 12);
  321         R(c, d, e, a, b, F2, KK2, 14,  2);
  322         R(b, c, d, e, a, F2, KK2, 13, 10);
  323         R(a, b, c, d, e, F2, KK2, 13,  0);
  324         R(e, a, b, c, d, F2, KK2,  7,  4);
  325         R(d, e, a, b, c, F2, KK2,  5, 13); /* #47 */
  326         /* Parallel round 4 */
  327         R(c, d, e, a, b, F1, KK3, 15,  8);
  328         R(b, c, d, e, a, F1, KK3,  5,  6);
  329         R(a, b, c, d, e, F1, KK3,  8,  4);
  330         R(e, a, b, c, d, F1, KK3, 11,  1);
  331         R(d, e, a, b, c, F1, KK3, 14,  3);
  332         R(c, d, e, a, b, F1, KK3, 14, 11);
  333         R(b, c, d, e, a, F1, KK3,  6, 15);
  334         R(a, b, c, d, e, F1, KK3, 14,  0);
  335         R(e, a, b, c, d, F1, KK3,  6,  5);
  336         R(d, e, a, b, c, F1, KK3,  9, 12);
  337         R(c, d, e, a, b, F1, KK3, 12,  2);
  338         R(b, c, d, e, a, F1, KK3,  9, 13);
  339         R(a, b, c, d, e, F1, KK3, 12,  9);
  340         R(e, a, b, c, d, F1, KK3,  5,  7);
  341         R(d, e, a, b, c, F1, KK3, 15, 10);
  342         R(c, d, e, a, b, F1, KK3,  8, 14); /* #63 */
  343         /* Parallel round 5 */
  344         R(b, c, d, e, a, F0, KK4,  8, 12);
  345         R(a, b, c, d, e, F0, KK4,  5, 15);
  346         R(e, a, b, c, d, F0, KK4, 12, 10);
  347         R(d, e, a, b, c, F0, KK4,  9,  4);
  348         R(c, d, e, a, b, F0, KK4, 12,  1);
  349         R(b, c, d, e, a, F0, KK4,  5,  5);
  350         R(a, b, c, d, e, F0, KK4, 14,  8);
  351         R(e, a, b, c, d, F0, KK4,  6,  7);
  352         R(d, e, a, b, c, F0, KK4,  8,  6);
  353         R(c, d, e, a, b, F0, KK4, 13,  2);
  354         R(b, c, d, e, a, F0, KK4,  6, 13);
  355         R(a, b, c, d, e, F0, KK4,  5, 14);
  356         R(e, a, b, c, d, F0, KK4, 15,  0);
  357         R(d, e, a, b, c, F0, KK4, 13,  3);
  358         R(c, d, e, a, b, F0, KK4, 11,  9);
  359         R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */
  360 
  361         t =        state[1] + cc + d;
  362         state[1] = state[2] + dd + e;
  363         state[2] = state[3] + ee + a;
  364         state[3] = state[4] + aa + b;
  365         state[4] = state[0] + bb + c;
  366         state[0] = t;
  367 }

Cache object: e8077b2780c7166306666cf18f73b14c


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