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authorscuri <scuri>2009-08-20 12:35:06 +0000
committerscuri <scuri>2009-08-20 12:35:06 +0000
commit5d735255ddd3cb2f547abd3d03969af3fb7eb04e (patch)
tree8fb66510bc625bb1b08ccb41f1b83fb0f7cb8f19 /src/fftw3/kernel/md5.c
parent35733b87eed86e5228f12fa10c98a3d9d22a6073 (diff)
*** empty log message ***
Diffstat (limited to 'src/fftw3/kernel/md5.c')
-rw-r--r--src/fftw3/kernel/md5.c143
1 files changed, 0 insertions, 143 deletions
diff --git a/src/fftw3/kernel/md5.c b/src/fftw3/kernel/md5.c
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--- a/src/fftw3/kernel/md5.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (c) 2003 Matteo Frigo
- * Copyright (c) 2003 Massachusetts Institute of Technology
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-/*
- independent implementation of Ron Rivest's MD5 message-digest
- algorithm, based on rfc 1321.
-
- Optimized for small code size, not speed. Works as long as
- sizeof(md5uint) >= 4.
-*/
-
-#include "ifftw.h"
-
-/* sintab[i] = 4294967296.0 * abs(sin((double)(i + 1))) */
-static const md5uint sintab[64] = {
- 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
- 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
- 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
- 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
- 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
- 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
- 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
- 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
- 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
- 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
- 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
- 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
- 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
- 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
- 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
- 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
-};
-
-/* see rfc 1321 section 3.4 */
-static const struct roundtab {
- char k;
- char s;
-} roundtab[64] = {
- { 0, 7}, { 1, 12}, { 2, 17}, { 3, 22},
- { 4, 7}, { 5, 12}, { 6, 17}, { 7, 22},
- { 8, 7}, { 9, 12}, { 10, 17}, { 11, 22},
- { 12, 7}, { 13, 12}, { 14, 17}, { 15, 22},
- { 1, 5}, { 6, 9}, { 11, 14}, { 0, 20},
- { 5, 5}, { 10, 9}, { 15, 14}, { 4, 20},
- { 9, 5}, { 14, 9}, { 3, 14}, { 8, 20},
- { 13, 5}, { 2, 9}, { 7, 14}, { 12, 20},
- { 5, 4}, { 8, 11}, { 11, 16}, { 14, 23},
- { 1, 4}, { 4, 11}, { 7, 16}, { 10, 23},
- { 13, 4}, { 0, 11}, { 3, 16}, { 6, 23},
- { 9, 4}, { 12, 11}, { 15, 16}, { 2, 23},
- { 0, 6}, { 7, 10}, { 14, 15}, { 5, 21},
- { 12, 6}, { 3, 10}, { 10, 15}, { 1, 21},
- { 8, 6}, { 15, 10}, { 6, 15}, { 13, 21},
- { 4, 6}, { 11, 10}, { 2, 15}, { 9, 21}
-};
-
-#define rol(a, s) ((a << (int)(s)) | (a >> (32 - (int)(s))))
-
-static void doblock(md5sig state, const unsigned char *data)
-{
- md5uint a, b, c, d, t, x[16];
- const md5uint msk = 0xffffffffUL;
- int i;
-
- /* encode input bytes into md5uint */
- for (i = 0; i < 16; ++i) {
- const unsigned char *p = data + 4 * i;
- x[i] = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
- }
-
- a = state[0]; b = state[1]; c = state[2]; d = state[3];
- for (i = 0; i < 64; ++i) {
- const struct roundtab *p = roundtab + i;
- int round = i / 16;
- switch (round) {
- case 0: a += (b & c) | (~b & d); break;
- case 1: a += (b & d) | (c & ~d); break;
- case 2: a += b ^ c ^ d; break;
- case 3: a += c ^ (b | ~d); break;
- }
- a += sintab[i];
- a += x[(int)(p->k)];
- a &= msk;
- t = b + rol(a, p->s);
- a = d; d = c; c = b; b = t;
- }
- state[0] = (state[0] + a) & msk;
- state[1] = (state[1] + b) & msk;
- state[2] = (state[2] + c) & msk;
- state[3] = (state[3] + d) & msk;
-}
-
-
-void X(md5begin)(md5 *p)
-{
- p->s[0] = 0x67452301;
- p->s[1] = 0xefcdab89;
- p->s[2] = 0x98badcfe;
- p->s[3] = 0x10325476;
- p->l = 0;
-}
-
-void X(md5putc)(md5 *p, unsigned char c)
-{
- p->c[p->l % 64] = c;
- if (((++p->l) % 64) == 0) doblock(p->s, p->c);
-}
-
-void X(md5end)(md5 *p)
-{
- unsigned l, i;
-
- l = 8 * p->l; /* length before padding, in bits */
-
- /* rfc 1321 section 3.1: padding */
- X(md5putc)(p, 0x80);
- while ((p->l % 64) != 56) X(md5putc)(p, 0x00);
-
- /* rfc 1321 section 3.2: length (little endian) */
- for (i = 0; i < 8; ++i) {
- X(md5putc)(p, l & 0xFF);
- l = l >> 8;
- }
-
- /* Now p->l % 64 == 0 and signature is in p->s */
-}