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Diffstat (limited to 'websocketpp/common/md5.hpp')
| -rw-r--r-- | websocketpp/common/md5.hpp | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/websocketpp/common/md5.hpp b/websocketpp/common/md5.hpp new file mode 100644 index 00000000..279725f4 --- /dev/null +++ b/websocketpp/common/md5.hpp @@ -0,0 +1,448 @@ +/* + md5.hpp is a reformulation of the md5.h and md5.c code from + http://www.opensource.apple.com/source/cups/cups-59/cups/md5.c to allow it to + function as a component of a header only library. This conversion was done by + Peter Thorson (webmaster@zaphoyd.com) in 2012 for the WebSocket++ project. The + changes are released under the same license as the original (listed below) +*/ +/* + Copyright (C) 1999, 2002 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 + + */ +/* $Id: md5.h,v 1.4 2002/04/13 19:20:28 lpd Exp $ */ +/* + Independent implementation of MD5 (RFC 1321). + + This code implements the MD5 Algorithm defined in RFC 1321, whose + text is available at + http://www.ietf.org/rfc/rfc1321.txt + The code is derived from the text of the RFC, including the test suite + (section A.5) but excluding the rest of Appendix A. It does not include + any code or documentation that is identified in the RFC as being + copyrighted. + + The original and principal author of md5.h is L. Peter Deutsch + <ghost@aladdin.com>. Other authors are noted in the change history + that follows (in reverse chronological order): + + 2002-04-13 lpd Removed support for non-ANSI compilers; removed + references to Ghostscript; clarified derivation from RFC 1321; + now handles byte order either statically or dynamically. + 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. + 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); + added conditionalization for C++ compilation from Martin + Purschke <purschke@bnl.gov>. + 1999-05-03 lpd Original version. + */ + +#ifndef WEBSOCKETPP_COMMON_MD5_HPP +#define WEBSOCKETPP_COMMON_MD5_HPP + +/* + * This package supports both compile-time and run-time determination of CPU + * byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be + * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is + * defined as non-zero, the code will be compiled to run only on big-endian + * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to + * run on either big- or little-endian CPUs, but will run slightly less + * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined. + */ + +#include <stddef.h> +#include <string> +#include <cstring> + +namespace websocketpp { +/// Provides MD5 hashing functionality +namespace md5 { + +typedef unsigned char md5_byte_t; /* 8-bit byte */ +typedef unsigned int md5_word_t; /* 32-bit word */ + +/* Define the state of the MD5 Algorithm. */ +typedef struct md5_state_s { + md5_word_t count[2]; /* message length in bits, lsw first */ + md5_word_t abcd[4]; /* digest buffer */ + md5_byte_t buf[64]; /* accumulate block */ +} md5_state_t; + +/* Initialize the algorithm. */ +inline void md5_init(md5_state_t *pms); + +/* Append a string to the message. */ +inline void md5_append(md5_state_t *pms, md5_byte_t const * data, size_t nbytes); + +/* Finish the message and return the digest. */ +inline void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); + +#undef ZSW_MD5_BYTE_ORDER /* 1 = big-endian, -1 = little-endian, 0 = unknown */ +#ifdef ARCH_IS_BIG_ENDIAN +# define ZSW_MD5_BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1) +#else +# define ZSW_MD5_BYTE_ORDER 0 +#endif + +#define ZSW_MD5_T_MASK ((md5_word_t)~0) +#define ZSW_MD5_T1 /* 0xd76aa478 */ (ZSW_MD5_T_MASK ^ 0x28955b87) +#define ZSW_MD5_T2 /* 0xe8c7b756 */ (ZSW_MD5_T_MASK ^ 0x173848a9) +#define ZSW_MD5_T3 0x242070db +#define ZSW_MD5_T4 /* 0xc1bdceee */ (ZSW_MD5_T_MASK ^ 0x3e423111) +#define ZSW_MD5_T5 /* 0xf57c0faf */ (ZSW_MD5_T_MASK ^ 0x0a83f050) +#define ZSW_MD5_T6 0x4787c62a +#define ZSW_MD5_T7 /* 0xa8304613 */ (ZSW_MD5_T_MASK ^ 0x57cfb9ec) +#define ZSW_MD5_T8 /* 0xfd469501 */ (ZSW_MD5_T_MASK ^ 0x02b96afe) +#define ZSW_MD5_T9 0x698098d8 +#define ZSW_MD5_T10 /* 0x8b44f7af */ (ZSW_MD5_T_MASK ^ 0x74bb0850) +#define ZSW_MD5_T11 /* 0xffff5bb1 */ (ZSW_MD5_T_MASK ^ 0x0000a44e) +#define ZSW_MD5_T12 /* 0x895cd7be */ (ZSW_MD5_T_MASK ^ 0x76a32841) +#define ZSW_MD5_T13 0x6b901122 +#define ZSW_MD5_T14 /* 0xfd987193 */ (ZSW_MD5_T_MASK ^ 0x02678e6c) +#define ZSW_MD5_T15 /* 0xa679438e */ (ZSW_MD5_T_MASK ^ 0x5986bc71) +#define ZSW_MD5_T16 0x49b40821 +#define ZSW_MD5_T17 /* 0xf61e2562 */ (ZSW_MD5_T_MASK ^ 0x09e1da9d) +#define ZSW_MD5_T18 /* 0xc040b340 */ (ZSW_MD5_T_MASK ^ 0x3fbf4cbf) +#define ZSW_MD5_T19 0x265e5a51 +#define ZSW_MD5_T20 /* 0xe9b6c7aa */ (ZSW_MD5_T_MASK ^ 0x16493855) +#define ZSW_MD5_T21 /* 0xd62f105d */ (ZSW_MD5_T_MASK ^ 0x29d0efa2) +#define ZSW_MD5_T22 0x02441453 +#define ZSW_MD5_T23 /* 0xd8a1e681 */ (ZSW_MD5_T_MASK ^ 0x275e197e) +#define ZSW_MD5_T24 /* 0xe7d3fbc8 */ (ZSW_MD5_T_MASK ^ 0x182c0437) +#define ZSW_MD5_T25 0x21e1cde6 +#define ZSW_MD5_T26 /* 0xc33707d6 */ (ZSW_MD5_T_MASK ^ 0x3cc8f829) +#define ZSW_MD5_T27 /* 0xf4d50d87 */ (ZSW_MD5_T_MASK ^ 0x0b2af278) +#define ZSW_MD5_T28 0x455a14ed +#define ZSW_MD5_T29 /* 0xa9e3e905 */ (ZSW_MD5_T_MASK ^ 0x561c16fa) +#define ZSW_MD5_T30 /* 0xfcefa3f8 */ (ZSW_MD5_T_MASK ^ 0x03105c07) +#define ZSW_MD5_T31 0x676f02d9 +#define ZSW_MD5_T32 /* 0x8d2a4c8a */ (ZSW_MD5_T_MASK ^ 0x72d5b375) +#define ZSW_MD5_T33 /* 0xfffa3942 */ (ZSW_MD5_T_MASK ^ 0x0005c6bd) +#define ZSW_MD5_T34 /* 0x8771f681 */ (ZSW_MD5_T_MASK ^ 0x788e097e) +#define ZSW_MD5_T35 0x6d9d6122 +#define ZSW_MD5_T36 /* 0xfde5380c */ (ZSW_MD5_T_MASK ^ 0x021ac7f3) +#define ZSW_MD5_T37 /* 0xa4beea44 */ (ZSW_MD5_T_MASK ^ 0x5b4115bb) +#define ZSW_MD5_T38 0x4bdecfa9 +#define ZSW_MD5_T39 /* 0xf6bb4b60 */ (ZSW_MD5_T_MASK ^ 0x0944b49f) +#define ZSW_MD5_T40 /* 0xbebfbc70 */ (ZSW_MD5_T_MASK ^ 0x4140438f) +#define ZSW_MD5_T41 0x289b7ec6 +#define ZSW_MD5_T42 /* 0xeaa127fa */ (ZSW_MD5_T_MASK ^ 0x155ed805) +#define ZSW_MD5_T43 /* 0xd4ef3085 */ (ZSW_MD5_T_MASK ^ 0x2b10cf7a) +#define ZSW_MD5_T44 0x04881d05 +#define ZSW_MD5_T45 /* 0xd9d4d039 */ (ZSW_MD5_T_MASK ^ 0x262b2fc6) +#define ZSW_MD5_T46 /* 0xe6db99e5 */ (ZSW_MD5_T_MASK ^ 0x1924661a) +#define ZSW_MD5_T47 0x1fa27cf8 +#define ZSW_MD5_T48 /* 0xc4ac5665 */ (ZSW_MD5_T_MASK ^ 0x3b53a99a) +#define ZSW_MD5_T49 /* 0xf4292244 */ (ZSW_MD5_T_MASK ^ 0x0bd6ddbb) +#define ZSW_MD5_T50 0x432aff97 +#define ZSW_MD5_T51 /* 0xab9423a7 */ (ZSW_MD5_T_MASK ^ 0x546bdc58) +#define ZSW_MD5_T52 /* 0xfc93a039 */ (ZSW_MD5_T_MASK ^ 0x036c5fc6) +#define ZSW_MD5_T53 0x655b59c3 +#define ZSW_MD5_T54 /* 0x8f0ccc92 */ (ZSW_MD5_T_MASK ^ 0x70f3336d) +#define ZSW_MD5_T55 /* 0xffeff47d */ (ZSW_MD5_T_MASK ^ 0x00100b82) +#define ZSW_MD5_T56 /* 0x85845dd1 */ (ZSW_MD5_T_MASK ^ 0x7a7ba22e) +#define ZSW_MD5_T57 0x6fa87e4f +#define ZSW_MD5_T58 /* 0xfe2ce6e0 */ (ZSW_MD5_T_MASK ^ 0x01d3191f) +#define ZSW_MD5_T59 /* 0xa3014314 */ (ZSW_MD5_T_MASK ^ 0x5cfebceb) +#define ZSW_MD5_T60 0x4e0811a1 +#define ZSW_MD5_T61 /* 0xf7537e82 */ (ZSW_MD5_T_MASK ^ 0x08ac817d) +#define ZSW_MD5_T62 /* 0xbd3af235 */ (ZSW_MD5_T_MASK ^ 0x42c50dca) +#define ZSW_MD5_T63 0x2ad7d2bb +#define ZSW_MD5_T64 /* 0xeb86d391 */ (ZSW_MD5_T_MASK ^ 0x14792c6e) + +static void md5_process(md5_state_t *pms, md5_byte_t const * data /*[64]*/) { + md5_word_t + a = pms->abcd[0], b = pms->abcd[1], + c = pms->abcd[2], d = pms->abcd[3]; + md5_word_t t; +#if ZSW_MD5_BYTE_ORDER > 0 + /* Define storage only for big-endian CPUs. */ + md5_word_t X[16]; +#else + /* Define storage for little-endian or both types of CPUs. */ + md5_word_t xbuf[16]; + md5_word_t const * X; +#endif + + { +#if ZSW_MD5_BYTE_ORDER == 0 + /* + * Determine dynamically whether this is a big-endian or + * little-endian machine, since we can use a more efficient + * algorithm on the latter. + */ + static int const w = 1; + + if (*((md5_byte_t const *)&w)) /* dynamic little-endian */ +#endif +#if ZSW_MD5_BYTE_ORDER <= 0 /* little-endian */ + { + /* + * On little-endian machines, we can process properly aligned + * data without copying it. + */ + if (!((data - (md5_byte_t const *)0) & 3)) { + /* data are properly aligned */ + X = (md5_word_t const *)data; + } else { + /* not aligned */ + std::memcpy(xbuf, data, 64); + X = xbuf; + } + } +#endif +#if ZSW_MD5_BYTE_ORDER == 0 + else /* dynamic big-endian */ +#endif +#if ZSW_MD5_BYTE_ORDER >= 0 /* big-endian */ + { + /* + * On big-endian machines, we must arrange the bytes in the + * right order. + */ + const md5_byte_t *xp = data; + int i; + +# if ZSW_MD5_BYTE_ORDER == 0 + X = xbuf; /* (dynamic only) */ +# else +# define xbuf X /* (static only) */ +# endif + for (i = 0; i < 16; ++i, xp += 4) + xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); + } +#endif + } + +#define ZSW_MD5_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 ZSW_MD5_F(x, y, z) (((x) & (y)) | (~(x) & (z))) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + ZSW_MD5_F(b,c,d) + X[k] + Ti;\ + a = ZSW_MD5_ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 0, 7, ZSW_MD5_T1); + SET(d, a, b, c, 1, 12, ZSW_MD5_T2); + SET(c, d, a, b, 2, 17, ZSW_MD5_T3); + SET(b, c, d, a, 3, 22, ZSW_MD5_T4); + SET(a, b, c, d, 4, 7, ZSW_MD5_T5); + SET(d, a, b, c, 5, 12, ZSW_MD5_T6); + SET(c, d, a, b, 6, 17, ZSW_MD5_T7); + SET(b, c, d, a, 7, 22, ZSW_MD5_T8); + SET(a, b, c, d, 8, 7, ZSW_MD5_T9); + SET(d, a, b, c, 9, 12, ZSW_MD5_T10); + SET(c, d, a, b, 10, 17, ZSW_MD5_T11); + SET(b, c, d, a, 11, 22, ZSW_MD5_T12); + SET(a, b, c, d, 12, 7, ZSW_MD5_T13); + SET(d, a, b, c, 13, 12, ZSW_MD5_T14); + SET(c, d, a, b, 14, 17, ZSW_MD5_T15); + SET(b, c, d, a, 15, 22, ZSW_MD5_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 ZSW_MD5_G(x, y, z) (((x) & (z)) | ((y) & ~(z))) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + ZSW_MD5_G(b,c,d) + X[k] + Ti;\ + a = ZSW_MD5_ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 1, 5, ZSW_MD5_T17); + SET(d, a, b, c, 6, 9, ZSW_MD5_T18); + SET(c, d, a, b, 11, 14, ZSW_MD5_T19); + SET(b, c, d, a, 0, 20, ZSW_MD5_T20); + SET(a, b, c, d, 5, 5, ZSW_MD5_T21); + SET(d, a, b, c, 10, 9, ZSW_MD5_T22); + SET(c, d, a, b, 15, 14, ZSW_MD5_T23); + SET(b, c, d, a, 4, 20, ZSW_MD5_T24); + SET(a, b, c, d, 9, 5, ZSW_MD5_T25); + SET(d, a, b, c, 14, 9, ZSW_MD5_T26); + SET(c, d, a, b, 3, 14, ZSW_MD5_T27); + SET(b, c, d, a, 8, 20, ZSW_MD5_T28); + SET(a, b, c, d, 13, 5, ZSW_MD5_T29); + SET(d, a, b, c, 2, 9, ZSW_MD5_T30); + SET(c, d, a, b, 7, 14, ZSW_MD5_T31); + SET(b, c, d, a, 12, 20, ZSW_MD5_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 ZSW_MD5_H(x, y, z) ((x) ^ (y) ^ (z)) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + ZSW_MD5_H(b,c,d) + X[k] + Ti;\ + a = ZSW_MD5_ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 5, 4, ZSW_MD5_T33); + SET(d, a, b, c, 8, 11, ZSW_MD5_T34); + SET(c, d, a, b, 11, 16, ZSW_MD5_T35); + SET(b, c, d, a, 14, 23, ZSW_MD5_T36); + SET(a, b, c, d, 1, 4, ZSW_MD5_T37); + SET(d, a, b, c, 4, 11, ZSW_MD5_T38); + SET(c, d, a, b, 7, 16, ZSW_MD5_T39); + SET(b, c, d, a, 10, 23, ZSW_MD5_T40); + SET(a, b, c, d, 13, 4, ZSW_MD5_T41); + SET(d, a, b, c, 0, 11, ZSW_MD5_T42); + SET(c, d, a, b, 3, 16, ZSW_MD5_T43); + SET(b, c, d, a, 6, 23, ZSW_MD5_T44); + SET(a, b, c, d, 9, 4, ZSW_MD5_T45); + SET(d, a, b, c, 12, 11, ZSW_MD5_T46); + SET(c, d, a, b, 15, 16, ZSW_MD5_T47); + SET(b, c, d, a, 2, 23, ZSW_MD5_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 ZSW_MD5_I(x, y, z) ((y) ^ ((x) | ~(z))) +#define SET(a, b, c, d, k, s, Ti)\ + t = a + ZSW_MD5_I(b,c,d) + X[k] + Ti;\ + a = ZSW_MD5_ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 0, 6, ZSW_MD5_T49); + SET(d, a, b, c, 7, 10, ZSW_MD5_T50); + SET(c, d, a, b, 14, 15, ZSW_MD5_T51); + SET(b, c, d, a, 5, 21, ZSW_MD5_T52); + SET(a, b, c, d, 12, 6, ZSW_MD5_T53); + SET(d, a, b, c, 3, 10, ZSW_MD5_T54); + SET(c, d, a, b, 10, 15, ZSW_MD5_T55); + SET(b, c, d, a, 1, 21, ZSW_MD5_T56); + SET(a, b, c, d, 8, 6, ZSW_MD5_T57); + SET(d, a, b, c, 15, 10, ZSW_MD5_T58); + SET(c, d, a, b, 6, 15, ZSW_MD5_T59); + SET(b, c, d, a, 13, 21, ZSW_MD5_T60); + SET(a, b, c, d, 4, 6, ZSW_MD5_T61); + SET(d, a, b, c, 11, 10, ZSW_MD5_T62); + SET(c, d, a, b, 2, 15, ZSW_MD5_T63); + SET(b, c, d, a, 9, 21, ZSW_MD5_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->abcd[0] += a; + pms->abcd[1] += b; + pms->abcd[2] += c; + pms->abcd[3] += d; +} + +void md5_init(md5_state_t *pms) { + pms->count[0] = pms->count[1] = 0; + pms->abcd[0] = 0x67452301; + pms->abcd[1] = /*0xefcdab89*/ ZSW_MD5_T_MASK ^ 0x10325476; + pms->abcd[2] = /*0x98badcfe*/ ZSW_MD5_T_MASK ^ 0x67452301; + pms->abcd[3] = 0x10325476; +} + +void md5_append(md5_state_t *pms, md5_byte_t const * data, size_t nbytes) { + md5_byte_t const * p = data; + size_t left = nbytes; + int offset = (pms->count[0] >> 3) & 63; + md5_word_t nbits = (md5_word_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) { + int copy = (offset + nbytes > 64 ? 64 - offset : static_cast<int>(nbytes)); + + std::memcpy(pms->buf + offset, p, copy); + if (offset + copy < 64) + return; + p += copy; + left -= copy; + md5_process(pms, pms->buf); + } + + /* Process full blocks. */ + for (; left >= 64; p += 64, left -= 64) + md5_process(pms, p); + + /* Process a final partial block. */ + if (left) + std::memcpy(pms->buf, p, left); +} + +void md5_finish(md5_state_t *pms, md5_byte_t digest[16]) { + static md5_byte_t const 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 + }; + md5_byte_t data[8]; + int i; + + /* Save the length before padding. */ + for (i = 0; i < 8; ++i) + data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3)); + /* Pad to 56 bytes mod 64. */ + md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1); + /* Append the length. */ + md5_append(pms, data, 8); + for (i = 0; i < 16; ++i) + digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3)); +} + +// some convenience c++ functions +inline std::string md5_hash_string(std::string const & s) { + char digest[16]; + + md5_state_t state; + + md5_init(&state); + md5_append(&state, (md5_byte_t const *)s.c_str(), s.size()); + md5_finish(&state, (md5_byte_t *)digest); + + std::string ret; + ret.resize(16); + std::copy(digest,digest+16,ret.begin()); + + return ret; +} + +const char hexval[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; + +inline std::string md5_hash_hex(std::string const & input) { + std::string hash = md5_hash_string(input); + std::string hex; + + for (size_t i = 0; i < hash.size(); i++) { + hex.push_back(hexval[((hash[i] >> 4) & 0xF)]); + hex.push_back(hexval[(hash[i]) & 0x0F]); + } + + return hex; +} + +} // md5 +} // websocketpp + +#endif // WEBSOCKETPP_COMMON_MD5_HPP |