+++ /dev/null
-/* -*-c-*-
- *
- * $Id: md5.c,v 1.1 1997/07/21 13:47:47 mdw Exp $
- *
- * MD-5 secure hash routines
- * Based on RSA MD-5 code
- *
- * (c) 1996, 1997 Mark Wooding
- */
-
-/*----- Licencing notice --------------------------------------------------*
- *
- * This file is part of `become'
- *
- * `Become' 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.
- *
- * `Become' 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 `become'; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: md5.c,v $
- * Revision 1.1 1997/07/21 13:47:47 mdw
- * Initial revision
- *
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <stdio.h>
-#include <string.h>
-
-#include "config.h"
-#include "md5.h"
-#include "utils.h"
-
-/*----- Define MD-5 transform ---------------------------------------------*/
-
-/* --- Low-level nonlinear functions --- */
-
-#define f(x,y,z) (((x) & (y)) | ((~x) & (z)))
-#define g(x,y,z) (((x) & (z)) | ((y) & (~z)))
-#define h(x,y,z) ((x) ^ (y) ^ (z))
-#define i(x,y,z) ((y) ^ ((x) | (~z)))
-
-#define rol(x,b) (((x) << (b)) | ((x) >> (32-(b))))
-
-/* --- Rotations applied at various stages --- */
-
-#define S11 7u
-#define S12 12u
-#define S13 17
-#define S14 22u
-#define S21 5u
-#define S22 9u
-#define S23 14u
-#define S24 20u
-#define S31 4u
-#define S32 11u
-#define S33 16u
-#define S34 23u
-#define S41 6u
-#define S42 10u
-#define S43 15u
-#define S44 21u
-
-/* --- Higher level nonlinear functions --- */
-
-#define ff(a, b, c, d, x, s, m) ( a += f(b, c, d) + x + m, \
- a = rol(a, s), a += b )
-
-#define gg(a, b, c, d, x, s, m) ( a += g(b, c, d) + x + m, \
- a = rol(a, s), a += b )
-
-#define hh(a, b, c, d, x, s, m) ( a += h(b, c, d) + x + m, \
- a = rol(a, s), a += b )
-
-#define ii(a, b, c, d, x, s, m) ( a += i(b, c, d) + x + m, \
- a = rol(a, s), a += b )
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @md5__trans@ --- *
- *
- * Arguments: @uint_32 *v@ = pointer to chaining variables (updated)
- * @const unsigned char *buf@ = pointer to a 64-byte block
- *
- * Returns: ---
- *
- * Use: Performs the main MD5 transform on a block of data.
- */
-
-static void md5__trans(uint_32 *v, const unsigned char *buf)
-{
- uint_32 a, b, c, d;
- uint_32 ib[16];
- size_t i;
-
- /* --- Initialise my internal registers --- */
-
- a = v[0], b = v[1], c = v[2], d = v[3];
-
- /* --- Turn the buffer into 32-bit words --- */
-
- for (i = 0; i < 16; i++)
- ib[i] = load32_l(buf + (i << 2));
-
- /* --- Round one --- */
-
- ff(a, b, c, d, ib[ 0], S11, 0xd76aa478); /* 1 */
- ff(d, a, b, c, ib[ 1], S12, 0xe8c7b756); /* 2 */
- ff(c, d, a, b, ib[ 2], S13, 0x242070db); /* 3 */
- ff(b, c, d, a, ib[ 3], S14, 0xc1bdceee); /* 4 */
- ff(a, b, c, d, ib[ 4], S11, 0xf57c0faf); /* 5 */
- ff(d, a, b, c, ib[ 5], S12, 0x4787c62a); /* 6 */
- ff(c, d, a, b, ib[ 6], S13, 0xa8304613); /* 7 */
- ff(b, c, d, a, ib[ 7], S14, 0xfd469501); /* 8 */
- ff(a, b, c, d, ib[ 8], S11, 0x698098d8); /* 9 */
- ff(d, a, b, c, ib[ 9], S12, 0x8b44f7af); /* 10 */
- ff(c, d, a, b, ib[10], S13, 0xffff5bb1); /* 11 */
- ff(b, c, d, a, ib[11], S14, 0x895cd7be); /* 12 */
- ff(a, b, c, d, ib[12], S11, 0x6b901122); /* 13 */
- ff(d, a, b, c, ib[13], S12, 0xfd987193); /* 14 */
- ff(c, d, a, b, ib[14], S13, 0xa679438e); /* 15 */
- ff(b, c, d, a, ib[15], S14, 0x49b40821); /* 16 */
-
- /* --- Round two --- */
-
- gg(a, b, c, d, ib[ 1], S21, 0xf61e2562); /* 17 */
- gg(d, a, b, c, ib[ 6], S22, 0xc040b340); /* 18 */
- gg(c, d, a, b, ib[11], S23, 0x265e5a51); /* 19 */
- gg(b, c, d, a, ib[ 0], S24, 0xe9b6c7aa); /* 20 */
- gg(a, b, c, d, ib[ 5], S21, 0xd62f105d); /* 21 */
- gg(d, a, b, c, ib[10], S22, 0x02441453); /* 22 */
- gg(c, d, a, b, ib[15], S23, 0xd8a1e681); /* 23 */
- gg(b, c, d, a, ib[ 4], S24, 0xe7d3fbc8); /* 24 */
- gg(a, b, c, d, ib[ 9], S21, 0x21e1cde6); /* 25 */
- gg(d, a, b, c, ib[14], S22, 0xc33707d6); /* 26 */
- gg(c, d, a, b, ib[ 3], S23, 0xf4d50d87); /* 27 */
- gg(b, c, d, a, ib[ 8], S24, 0x455a14ed); /* 28 */
- gg(a, b, c, d, ib[13], S21, 0xa9e3e905); /* 29 */
- gg(d, a, b, c, ib[ 2], S22, 0xfcefa3f8); /* 30 */
- gg(c, d, a, b, ib[ 7], S23, 0x676f02d9); /* 31 */
- gg(b, c, d, a, ib[12], S24, 0x8d2a4c8a); /* 32 */
-
- /* --- Round three --- */
-
- hh(a, b, c, d, ib[ 5], S31, 0xfffa3942); /* 33 */
- hh(d, a, b, c, ib[ 8], S32, 0x8771f681); /* 34 */
- hh(c, d, a, b, ib[11], S33, 0x6d9d6122); /* 35 */
- hh(b, c, d, a, ib[14], S34, 0xfde5380c); /* 36 */
- hh(a, b, c, d, ib[ 1], S31, 0xa4beea44); /* 37 */
- hh(d, a, b, c, ib[ 4], S32, 0x4bdecfa9); /* 38 */
- hh(c, d, a, b, ib[ 7], S33, 0xf6bb4b60); /* 39 */
- hh(b, c, d, a, ib[10], S34, 0xbebfbc70); /* 40 */
- hh(a, b, c, d, ib[13], S31, 0x289b7ec6); /* 41 */
- hh(d, a, b, c, ib[ 0], S32, 0xeaa127fa); /* 42 */
- hh(c, d, a, b, ib[ 3], S33, 0xd4ef3085); /* 43 */
- hh(b, c, d, a, ib[ 6], S34, 0x04881d05); /* 44 */
- hh(a, b, c, d, ib[ 9], S31, 0xd9d4d039); /* 45 */
- hh(d, a, b, c, ib[12], S32, 0xe6db99e5); /* 46 */
- hh(c, d, a, b, ib[15], S33, 0x1fa27cf8); /* 47 */
- hh(b, c, d, a, ib[ 2], S34, 0xc4ac5665); /* 48 */
-
- /* --- Round four --- */
-
- ii(a, b, c, d, ib[ 0], S41, 0xf4292244); /* 49 */
- ii(d, a, b, c, ib[ 7], S42, 0x432aff97); /* 50 */
- ii(c, d, a, b, ib[14], S43, 0xab9423a7); /* 51 */
- ii(b, c, d, a, ib[ 5], S44, 0xfc93a039); /* 52 */
- ii(a, b, c, d, ib[12], S41, 0x655b59c3); /* 53 */
- ii(d, a, b, c, ib[ 3], S42, 0x8f0ccc92); /* 54 */
- ii(c, d, a, b, ib[10], S43, 0xffeff47d); /* 55 */
- ii(b, c, d, a, ib[ 1], S44, 0x85845dd1); /* 56 */
- ii(a, b, c, d, ib[ 8], S41, 0x6fa87e4f); /* 57 */
- ii(d, a, b, c, ib[15], S42, 0xfe2ce6e0); /* 58 */
- ii(c, d, a, b, ib[ 6], S43, 0xa3014314); /* 59 */
- ii(b, c, d, a, ib[13], S44, 0x4e0811a1); /* 60 */
- ii(a, b, c, d, ib[ 4], S41, 0xf7537e82); /* 61 */
- ii(d, a, b, c, ib[11], S42, 0xbd3af235); /* 62 */
- ii(c, d, a, b, ib[ 2], S43, 0x2ad7d2bb); /* 63 */
- ii(b, c, d, a, ib[ 9], S44, 0xeb86d391); /* 64 */
-
- /* --- Update the context --- */
-
- v[0] += a, v[1] += b, v[2] += c, v[3] += d;
-}
-
-/* --- @md5_trans@ --- *
- *
- * Arguments: @unsigned char *v@ = pointer to chaining block (updated)
- * @const unsigned char *buf@ = pointer to input buffer
- *
- * Returns: ---
- *
- * Use: Performs the MD5 transformation on a chunk of data. This may
- * be useful for using MD5 in MDC-type cipher constructions.
- */
-
-void md5_trans(unsigned char *v, const unsigned char *buf)
-{
- uint_32 vv[4];
-
- vv[0] = load32_l(v + 0);
- vv[1] = load32_l(v + 4);
- vv[2] = load32_l(v + 8);
- vv[3] = load32_l(v + 12);
- md5__trans(vv, buf);
- store32_l(v + 0, vv[0]);
- store32_l(v + 4, vv[1]);
- store32_l(v + 8, vv[2]);
- store32_l(v + 12, vv[3]);
-}
-
-/* --- @md5_buffer@ --- *
- *
- * Arguments: @md5 *m@ = pointer to an MD5 context
- * @const void *buff@ = pointer to buffer of data
- * @size_t size@ = size of buffer
- *
- * Returns: ---
- *
- * Use: Hashes the buffer of data. You can call @md5_buffer@
- * lots of times during an MD5 job, to allow big files to be
- * split into little ones.
- */
-
-void md5_buffer(md5 *m, const void *buff, size_t size)
-{
- long int s = size;
- const unsigned char *b = buff;
- unsigned long x, y;
-
- /* --- Maybe there's some data already in the buffer --- */
-
- if (x = m->size & 63, x) {
- y = 64 - x;
- if (y > s) {
- memcpy(x + m->buf, b, s);
- m->size += s;
- return;
- }
- memcpy(x + m->buf, b, y);
- md5__trans(m->val, m->buf);
- s -= y, b += y;
- }
-
- /* --- Now do whole buffers-full --- */
-
- while (s >= 64) {
- md5__trans(m->val, b);
- s -= 64, b += 64;
- }
-
- /* --- Tidy up the tail end --- */
-
- if (s)
- memcpy(m->buf, b, s);
- m->size += size;
-}
-
-/* --- @md5_key@ --- *
- *
- * Arguments: @md5 *m@ = pointer to an MD5 context
- * @const unsigned char *k@ = pointer to a 4-word `key'
- *
- * Returns: ---
- *
- * Use: Initialises a context buffer, with a chosen initialisation
- * string (instead of the standard MD5 value). This allows you
- * to use NMAC message authentication, should the urge take you.
- */
-
-void md5_key(md5 *m, const unsigned char *k)
-{
- m->size = 0;
- m->val[0] = load32_l(k + 0);
- m->val[0] = load32_l(k + 4);
- m->val[0] = load32_l(k + 8);
- m->val[0] = load32_l(k + 12);
-}
-
-/* --- @md5_init@ --- *
- *
- * Arguments: @md5 *m@ = pointer to an MD5 context
- *
- * Returns: ---
- *
- * Use: Initialises the context buffer, so that you can do an
- * MD5 job.
- */
-
-void md5_init(md5 *m)
-{
- m->size = 0;
- m->val[0] = 0x67452301;
- m->val[1] = 0xefcdab89;
- m->val[2] = 0x98badcfe;
- m->val[3] = 0x10325476;
-}
-
-/* --- @md5_final@ --- *
- *
- * Arguments: @md5 *m@ = pointer to context buffer
- * @unsigned char *v@ = where to store the value
- *
- * Returns: ---
- *
- * Use: Finalises an MD5 buffer, so that you can use the result.
- */
-
-void md5_final(md5 *m, unsigned char *v)
-{
- int s = m->size;
-
- /* --- Pad out the block --- */
-
- {
- const static unsigned char pad[64] = { 0x80 };
- int p = m->size & 63;
- p = (p < 56) ? (p = 56 - p) : (p = 120 - p);
- md5_buffer(m, pad, p);
- }
-
- /* --- Append the length --- */
-
- {
- unsigned char b[8];
-
- store32_l(b + 0, s << 3);
- store32_l(b + 4, s >> 29);
- md5_buffer(m, b, 8);
- }
-
- /* --- Write out the value --- */
-
- if (v) {
- store32_l(v + 0, m->val[0]);
- store32_l(v + 4, m->val[1]);
- store32_l(v + 8, m->val[2]);
- store32_l(v + 12, m->val[3]);
- }
-}
-
-/*----- Test driver -------------------------------------------------------*/
-
-#ifdef TEST_RIG
-
-int main(int argc, char *argv[])
-{
- if (argc > 1 && strcmp(argv[1], "-x") == 0) {
-
- static struct {
- const char *string;
- uint_32 md[4];
- } table[] = {
- "", { 0xd98c1dd4, 0x04b2008f, 0x980980e9, 0x7e42f8ec },
- "a", { 0xb975c10c, 0xa8b6f1c0, 0xe299c331, 0x61267769 },
- "abc", { 0x98500190, 0xb04fd23c, 0x7d3f96d6, 0x727fe128 },
- "message digest", { 0x7d696bf9, 0x8d93b77c, 0x312f5a52, 0xd061f1aa },
- "abcdefghijklmnopqrstuvwxyz",
- { 0xd7d3fcc3, 0x00e49261, 0x6c49fb7d, 0x3be167ca },
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
- { 0x98ab74d1, 0xf5d977d2, 0x2c1c61a5, 0x9f9d419f },
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\n",
- { 0xbaa7652b, 0x5e10cd4a, 0xde9acbf2, 0xfa0b9fbd }
- };
- int steptbl[] = { 3, 18, 32, 37, 63, 64, 65, 256, 1024, -1 };
-
- md5 m;
- int i, j;
- const char *p;
- size_t sz, a, d;
- int f = 1;
-
- for (i = 0; i < sizeof(table) / sizeof(table[0]); i++) {
- sz = strlen(table[i].string);
- for (j = 0; steptbl[j] < sz && steptbl[j] != -1; j++) {
- p = table[i].string;
- d = steptbl[j];
- md5_init(&m);
- for (a = sz; a > d; a -= d) {
- md5_buffer(&m, p, d);
- p += d;
- }
- md5_buffer(&m, p, a);
- md5_final(&m, 0);
- if (m.val[0] != table[i].md[0] ||
- m.val[1] != table[i].md[1] ||
- m.val[2] != table[i].md[2] ||
- m.val[3] != table[i].md[3]) {
- printf("!!! bad value, string == `%s', step size == %i\n"
- "!!! expected %08lx-%08lx-%08lx-%08lx, found "
- "%08lx-%08lx-%08lx-%08lx\n\n",
- table[i].string, d,
- (unsigned long)table[i].md[0],
- (unsigned long)table[i].md[1],
- (unsigned long)table[i].md[2],
- (unsigned long)table[i].md[3],
- (unsigned long)m.val[0],
- (unsigned long)m.val[1],
- (unsigned long)m.val[2],
- (unsigned long)m.val[3]);
- f = 0;
- }
- }
- md5_init(&m);
- md5_buffer(&m, table[i].string, sz);
- md5_final(&m, 0);
- if (m.val[0] != table[i].md[0] ||
- m.val[1] != table[i].md[1] ||
- m.val[2] != table[i].md[2] ||
- m.val[3] != table[i].md[3]) {
- printf("!!! bad value, string == `%s', step size == entire string\n"
- "!!! expected %08lx-%08lx-%08lx-%08lx, found "
- "%08lx-%08lx-%08lx-%08lx\n\n",
- table[i].string,
- (unsigned long)table[i].md[0],
- (unsigned long)table[i].md[1],
- (unsigned long)table[i].md[2],
- (unsigned long)table[i].md[3],
- (unsigned long)m.val[0],
- (unsigned long)m.val[1],
- (unsigned long)m.val[2],
- (unsigned long)m.val[3]);
- f = 0;
- } else {
- printf("`%s' => %08lx-%08lx-%08lx-%08lx\n",
- table[i].string,
- (unsigned long)m.val[0],
- (unsigned long)m.val[1],
- (unsigned long)m.val[2],
- (unsigned long)m.val[3]);
- }
- }
-
- } else {
-
- char buff[4096];
- md5 m;
- int i;
- int read;
-
- md5_init(&m);
- while (read = fread(buff, 1, 4096, stdin), read)
- md5_buffer(&m, buff, read);
- md5_final(&m, 0);
-
- for (i = 0; i < 4; i++)
- printf("%02lx%02lx%02lx%02lx",
- (unsigned long)( (m.val[i] & 0x000000FF) >> 0 ),
- (unsigned long)( (m.val[i] & 0x0000FF00) >> 8 ),
- (unsigned long)( (m.val[i] & 0x00FF0000) >> 16 ),
- (unsigned long)( (m.val[i] & 0xFF000000) >> 24 ));
- putc('\n', stdout);
-
- }
-
- return (0);
-}
-
-#endif
-
-/*----- That's all, folks -------------------------------------------------*/
~mdw / become / blobdiff