diff options
Diffstat (limited to 'trunk/ext/digest/md5/md5.c')
-rw-r--r-- | trunk/ext/digest/md5/md5.c | 422 |
1 files changed, 0 insertions, 422 deletions
diff --git a/trunk/ext/digest/md5/md5.c b/trunk/ext/digest/md5/md5.c deleted file mode 100644 index 518f8239ed..0000000000 --- a/trunk/ext/digest/md5/md5.c +++ /dev/null @@ -1,422 +0,0 @@ -/* - Copyright (C) 1999, 2000 Aladdin Enterprises. All rights reserved. - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. - - L. Peter Deutsch - ghost@aladdin.com - - */ - -/* - Independent implementation of MD5 (RFC 1321). - - This code implements the MD5 Algorithm defined in RFC 1321. - It is derived directly from the text of the RFC and not from the - reference implementation. - - The original and principal author of md5.c is L. Peter Deutsch - <ghost@aladdin.com>. Other authors are noted in the change history - that follows (in reverse chronological order): - - 2000-07-03 lpd Patched to eliminate warnings about "constant is - unsigned in ANSI C, signed in traditional"; - made test program self-checking. - 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. - 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5). - 1999-05-03 lpd Original version. - */ - -/* - This code was modified for use in Ruby. - - - Akinori MUSHA <knu@idaemons.org> - */ - -/*$OrigId: md5c.c,v 1.2 2001/03/26 08:57:14 matz Exp $ */ -/*$RoughId: md5.c,v 1.2 2001/07/13 19:48:41 knu Exp $ */ -/*$Id$ */ - -#include "md5.h" - -#ifdef TEST -/* - * Compile with -DTEST to create a self-contained executable test program. - * The test program should print out the same values as given in section - * A.5 of RFC 1321, reproduced below. - */ -#include <string.h> -int -main() -{ - static const char *const test[7*2] = { - "", "d41d8cd98f00b204e9800998ecf8427e", - "a", "0cc175b9c0f1b6a831c399e269772661", - "abc", "900150983cd24fb0d6963f7d28e17f72", - "message digest", "f96b697d7cb7938d525a2f31aaf161d0", - "abcdefghijklmnopqrstuvwxyz", "c3fcd3d76192e4007dfb496cca67e13b", - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", - "d174ab98d277d9f5a5611c2c9f419d9f", - "12345678901234567890123456789012345678901234567890123456789012345678901234567890", "57edf4a22be3c955ac49da2e2107b67a" - }; - int i; - - for (i = 0; i < 7*2; i += 2) { - MD5_CTX state; - uint8_t digest[16]; - char hex_output[16*2 + 1]; - int di; - - MD5_Init(&state); - MD5_Update(&state, (const uint8_t *)test[i], strlen(test[i])); - MD5_Final(digest, &state); - printf("MD5 (\"%s\") = ", test[i]); - for (di = 0; di < 16; ++di) - sprintf(hex_output + di * 2, "%02x", digest[di]); - puts(hex_output); - if (strcmp(hex_output, test[i + 1])) - printf("**** ERROR, should be: %s\n", test[i + 1]); - } - return 0; -} -#endif /* TEST */ - - -/* - * For reference, here is the program that computed the T values. - */ -#ifdef COMPUTE_T_VALUES -#include <math.h> -int -main() -{ - int i; - for (i = 1; i <= 64; ++i) { - unsigned long v = (unsigned long)(4294967296.0 * fabs(sin((double)i))); - - /* - * The following nonsense is only to avoid compiler warnings about - * "integer constant is unsigned in ANSI C, signed with -traditional". - */ - if (v >> 31) { - printf("#define T%d /* 0x%08lx */ (T_MASK ^ 0x%08lx)\n", i, - v, (unsigned long)(unsigned int)(~v)); - } else { - printf("#define T%d 0x%08lx\n", i, v); - } - } - return 0; -} -#endif /* COMPUTE_T_VALUES */ -/* - * End of T computation program. - */ -#ifdef T_MASK -#undef T_MASK -#endif -#define T_MASK ((uint32_t)~0) -#define T1 /* 0xd76aa478 */ (T_MASK ^ 0x28955b87) -#define T2 /* 0xe8c7b756 */ (T_MASK ^ 0x173848a9) -#define T3 0x242070db -#define T4 /* 0xc1bdceee */ (T_MASK ^ 0x3e423111) -#define T5 /* 0xf57c0faf */ (T_MASK ^ 0x0a83f050) -#define T6 0x4787c62a -#define T7 /* 0xa8304613 */ (T_MASK ^ 0x57cfb9ec) -#define T8 /* 0xfd469501 */ (T_MASK ^ 0x02b96afe) -#define T9 0x698098d8 -#define T10 /* 0x8b44f7af */ (T_MASK ^ 0x74bb0850) -#define T11 /* 0xffff5bb1 */ (T_MASK ^ 0x0000a44e) -#define T12 /* 0x895cd7be */ (T_MASK ^ 0x76a32841) -#define T13 0x6b901122 -#define T14 /* 0xfd987193 */ (T_MASK ^ 0x02678e6c) -#define T15 /* 0xa679438e */ (T_MASK ^ 0x5986bc71) -#define T16 0x49b40821 -#define T17 /* 0xf61e2562 */ (T_MASK ^ 0x09e1da9d) -#define T18 /* 0xc040b340 */ (T_MASK ^ 0x3fbf4cbf) -#define T19 0x265e5a51 -#define T20 /* 0xe9b6c7aa */ (T_MASK ^ 0x16493855) -#define T21 /* 0xd62f105d */ (T_MASK ^ 0x29d0efa2) -#define T22 0x02441453 -#define T23 /* 0xd8a1e681 */ (T_MASK ^ 0x275e197e) -#define T24 /* 0xe7d3fbc8 */ (T_MASK ^ 0x182c0437) -#define T25 0x21e1cde6 -#define T26 /* 0xc33707d6 */ (T_MASK ^ 0x3cc8f829) -#define T27 /* 0xf4d50d87 */ (T_MASK ^ 0x0b2af278) -#define T28 0x455a14ed -#define T29 /* 0xa9e3e905 */ (T_MASK ^ 0x561c16fa) -#define T30 /* 0xfcefa3f8 */ (T_MASK ^ 0x03105c07) -#define T31 0x676f02d9 -#define T32 /* 0x8d2a4c8a */ (T_MASK ^ 0x72d5b375) -#define T33 /* 0xfffa3942 */ (T_MASK ^ 0x0005c6bd) -#define T34 /* 0x8771f681 */ (T_MASK ^ 0x788e097e) -#define T35 0x6d9d6122 -#define T36 /* 0xfde5380c */ (T_MASK ^ 0x021ac7f3) -#define T37 /* 0xa4beea44 */ (T_MASK ^ 0x5b4115bb) -#define T38 0x4bdecfa9 -#define T39 /* 0xf6bb4b60 */ (T_MASK ^ 0x0944b49f) -#define T40 /* 0xbebfbc70 */ (T_MASK ^ 0x4140438f) -#define T41 0x289b7ec6 -#define T42 /* 0xeaa127fa */ (T_MASK ^ 0x155ed805) -#define T43 /* 0xd4ef3085 */ (T_MASK ^ 0x2b10cf7a) -#define T44 0x04881d05 -#define T45 /* 0xd9d4d039 */ (T_MASK ^ 0x262b2fc6) -#define T46 /* 0xe6db99e5 */ (T_MASK ^ 0x1924661a) -#define T47 0x1fa27cf8 -#define T48 /* 0xc4ac5665 */ (T_MASK ^ 0x3b53a99a) -#define T49 /* 0xf4292244 */ (T_MASK ^ 0x0bd6ddbb) -#define T50 0x432aff97 -#define T51 /* 0xab9423a7 */ (T_MASK ^ 0x546bdc58) -#define T52 /* 0xfc93a039 */ (T_MASK ^ 0x036c5fc6) -#define T53 0x655b59c3 -#define T54 /* 0x8f0ccc92 */ (T_MASK ^ 0x70f3336d) -#define T55 /* 0xffeff47d */ (T_MASK ^ 0x00100b82) -#define T56 /* 0x85845dd1 */ (T_MASK ^ 0x7a7ba22e) -#define T57 0x6fa87e4f -#define T58 /* 0xfe2ce6e0 */ (T_MASK ^ 0x01d3191f) -#define T59 /* 0xa3014314 */ (T_MASK ^ 0x5cfebceb) -#define T60 0x4e0811a1 -#define T61 /* 0xf7537e82 */ (T_MASK ^ 0x08ac817d) -#define T62 /* 0xbd3af235 */ (T_MASK ^ 0x42c50dca) -#define T63 0x2ad7d2bb -#define T64 /* 0xeb86d391 */ (T_MASK ^ 0x14792c6e) - - -static void -md5_process(MD5_CTX *pms, const uint8_t *data /*[64]*/) -{ - uint32_t - a = pms->state[0], b = pms->state[1], - c = pms->state[2], d = pms->state[3]; - uint32_t t; - -#ifdef WORDS_BIGENDIAN - - /* - * On big-endian machines, we must arrange the bytes in the right - * order. (This also works on machines of unknown byte order.) - */ - uint32_t X[16]; - const uint8_t *xp = data; - int i; - - for (i = 0; i < 16; ++i, xp += 4) - X[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); - -#else - - /* - * On little-endian machines, we can process properly aligned data - * without copying it. - */ - uint32_t xbuf[16]; - const uint32_t *X; - - if (!((data - (const uint8_t *)0) & 3)) { - /* data are properly aligned */ - X = (const uint32_t *)data; - } else { - /* not aligned */ - memcpy(xbuf, data, 64); - X = xbuf; - } -#endif - -#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) - - /* Round 1. */ - /* Let [abcd k s i] denote the operation - a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */ -#define F(x, y, z) (((x) & (y)) | (~(x) & (z))) -#define SET(a, b, c, d, k, s, Ti)\ - t = a + F(b,c,d) + X[k] + Ti;\ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 0, 7, T1); - SET(d, a, b, c, 1, 12, T2); - SET(c, d, a, b, 2, 17, T3); - SET(b, c, d, a, 3, 22, T4); - SET(a, b, c, d, 4, 7, T5); - SET(d, a, b, c, 5, 12, T6); - SET(c, d, a, b, 6, 17, T7); - SET(b, c, d, a, 7, 22, T8); - SET(a, b, c, d, 8, 7, T9); - SET(d, a, b, c, 9, 12, T10); - SET(c, d, a, b, 10, 17, T11); - SET(b, c, d, a, 11, 22, T12); - SET(a, b, c, d, 12, 7, T13); - SET(d, a, b, c, 13, 12, T14); - SET(c, d, a, b, 14, 17, T15); - SET(b, c, d, a, 15, 22, T16); -#undef SET - - /* Round 2. */ - /* Let [abcd k s i] denote the operation - a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */ -#define G(x, y, z) (((x) & (z)) | ((y) & ~(z))) -#define SET(a, b, c, d, k, s, Ti)\ - t = a + G(b,c,d) + X[k] + Ti;\ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 1, 5, T17); - SET(d, a, b, c, 6, 9, T18); - SET(c, d, a, b, 11, 14, T19); - SET(b, c, d, a, 0, 20, T20); - SET(a, b, c, d, 5, 5, T21); - SET(d, a, b, c, 10, 9, T22); - SET(c, d, a, b, 15, 14, T23); - SET(b, c, d, a, 4, 20, T24); - SET(a, b, c, d, 9, 5, T25); - SET(d, a, b, c, 14, 9, T26); - SET(c, d, a, b, 3, 14, T27); - SET(b, c, d, a, 8, 20, T28); - SET(a, b, c, d, 13, 5, T29); - SET(d, a, b, c, 2, 9, T30); - SET(c, d, a, b, 7, 14, T31); - SET(b, c, d, a, 12, 20, T32); -#undef SET - - /* Round 3. */ - /* Let [abcd k s t] denote the operation - a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */ -#define H(x, y, z) ((x) ^ (y) ^ (z)) -#define SET(a, b, c, d, k, s, Ti)\ - t = a + H(b,c,d) + X[k] + Ti;\ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 5, 4, T33); - SET(d, a, b, c, 8, 11, T34); - SET(c, d, a, b, 11, 16, T35); - SET(b, c, d, a, 14, 23, T36); - SET(a, b, c, d, 1, 4, T37); - SET(d, a, b, c, 4, 11, T38); - SET(c, d, a, b, 7, 16, T39); - SET(b, c, d, a, 10, 23, T40); - SET(a, b, c, d, 13, 4, T41); - SET(d, a, b, c, 0, 11, T42); - SET(c, d, a, b, 3, 16, T43); - SET(b, c, d, a, 6, 23, T44); - SET(a, b, c, d, 9, 4, T45); - SET(d, a, b, c, 12, 11, T46); - SET(c, d, a, b, 15, 16, T47); - SET(b, c, d, a, 2, 23, T48); -#undef SET - - /* Round 4. */ - /* Let [abcd k s t] denote the operation - a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */ -#define I(x, y, z) ((y) ^ ((x) | ~(z))) -#define SET(a, b, c, d, k, s, Ti)\ - t = a + I(b,c,d) + X[k] + Ti;\ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 0, 6, T49); - SET(d, a, b, c, 7, 10, T50); - SET(c, d, a, b, 14, 15, T51); - SET(b, c, d, a, 5, 21, T52); - SET(a, b, c, d, 12, 6, T53); - SET(d, a, b, c, 3, 10, T54); - SET(c, d, a, b, 10, 15, T55); - SET(b, c, d, a, 1, 21, T56); - SET(a, b, c, d, 8, 6, T57); - SET(d, a, b, c, 15, 10, T58); - SET(c, d, a, b, 6, 15, T59); - SET(b, c, d, a, 13, 21, T60); - SET(a, b, c, d, 4, 6, T61); - SET(d, a, b, c, 11, 10, T62); - SET(c, d, a, b, 2, 15, T63); - SET(b, c, d, a, 9, 21, T64); -#undef SET - - /* Then perform the following additions. (That is increment each - of the four registers by the value it had before this block - was started.) */ - pms->state[0] += a; - pms->state[1] += b; - pms->state[2] += c; - pms->state[3] += d; -} - -void -MD5_Init(MD5_CTX *pms) -{ - pms->count[0] = pms->count[1] = 0; - pms->state[0] = 0x67452301; - pms->state[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476; - pms->state[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301; - pms->state[3] = 0x10325476; -} - -void -MD5_Update(MD5_CTX *pms, const uint8_t *data, size_t nbytes) -{ - const uint8_t *p = data; - size_t left = nbytes; - size_t offset = (pms->count[0] >> 3) & 63; - uint32_t nbits = (uint32_t)(nbytes << 3); - - if (nbytes <= 0) - return; - - /* Update the message length. */ - pms->count[1] += nbytes >> 29; - pms->count[0] += nbits; - if (pms->count[0] < nbits) - pms->count[1]++; - - /* Process an initial partial block. */ - if (offset) { - size_t copy = (offset + nbytes > 64 ? 64 - offset : nbytes); - - memcpy(pms->buffer + offset, p, copy); - if (offset + copy < 64) - return; - p += copy; - left -= copy; - md5_process(pms, pms->buffer); - } - - /* Process full blocks. */ - for (; left >= 64; p += 64, left -= 64) - md5_process(pms, p); - - /* Process a final partial block. */ - if (left) - memcpy(pms->buffer, p, left); -} - -void -MD5_Finish(MD5_CTX *pms, uint8_t *digest) -{ - static const uint8_t pad[64] = { - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - }; - uint8_t data[8]; - size_t i; - - /* Save the length before padding. */ - for (i = 0; i < 8; ++i) - data[i] = (uint8_t)(pms->count[i >> 2] >> ((i & 3) << 3)); - /* Pad to 56 bytes mod 64. */ - MD5_Update(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1); - /* Append the length. */ - MD5_Update(pms, data, 8); - for (i = 0; i < 16; ++i) - digest[i] = (uint8_t)(pms->state[i >> 2] >> ((i & 3) << 3)); -} |