author | unc0rr |
Wed, 05 Dec 2012 23:25:11 +0400 | |
changeset 8232 | fb5aa767a2a0 |
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child 10017 | de822cd3df3a |
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/* |
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Copyright (C) 1999, 2000, 2002 Aladdin Enterprises. All rights reserved. |
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|
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This software is provided 'as-is', without any express or implied |
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warranty. In no event will the authors be held liable for any damages |
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arising from the use of this software. |
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|
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Permission is granted to anyone to use this software for any purpose, |
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including commercial applications, and to alter it and redistribute it |
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freely, subject to the following restrictions: |
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|
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1. The origin of this software must not be misrepresented; you must not |
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claim that you wrote the original software. If you use this software |
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in a product, an acknowledgment in the product documentation would be |
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appreciated but is not required. |
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2. Altered source versions must be plainly marked as such, and must not be |
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misrepresented as being the original software. |
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3. This notice may not be removed or altered from any source distribution. |
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|
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L. Peter Deutsch |
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ghost@aladdin.com |
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|
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*/ |
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/* $Id: md5.c,v 1.6 2002/04/13 19:20:28 lpd Exp $ */ |
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/* |
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Independent implementation of MD5 (RFC 1321). |
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This code implements the MD5 Algorithm defined in RFC 1321, whose |
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text is available at |
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http://www.ietf.org/rfc/rfc1321.txt |
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The code is derived from the text of the RFC, including the test suite |
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(section A.5) but excluding the rest of Appendix A. It does not include |
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any code or documentation that is identified in the RFC as being |
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copyrighted. |
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|
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The original and principal author of md5.c is L. Peter Deutsch |
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<ghost@aladdin.com>. Other authors are noted in the change history |
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that follows (in reverse chronological order): |
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2002-04-13 lpd Clarified derivation from RFC 1321; now handles byte order |
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either statically or dynamically; added missing #include <string.h> |
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in library. |
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2002-03-11 lpd Corrected argument list for main(), and added int return |
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type, in test program and T value program. |
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2002-02-21 lpd Added missing #include <stdio.h> in test program. |
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2000-07-03 lpd Patched to eliminate warnings about "constant is |
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unsigned in ANSI C, signed in traditional"; made test program |
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self-checking. |
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1999-11-04 lpd Edited comments slightly for automatic TOC extraction. |
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1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5). |
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1999-05-03 lpd Original version. |
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*/ |
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#include "md5.h" |
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#include <string.h> |
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#undef BYTE_ORDER /* 1 = big-endian, -1 = little-endian, 0 = unknown */ |
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#ifdef ARCH_IS_BIG_ENDIAN |
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# define BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1) |
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#else |
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# define BYTE_ORDER 0 |
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#endif |
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#define T_MASK ((md5_word_t)~0) |
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#define T1 /* 0xd76aa478 */ (T_MASK ^ 0x28955b87) |
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#define T2 /* 0xe8c7b756 */ (T_MASK ^ 0x173848a9) |
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#define T3 0x242070db |
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#define T4 /* 0xc1bdceee */ (T_MASK ^ 0x3e423111) |
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#define T5 /* 0xf57c0faf */ (T_MASK ^ 0x0a83f050) |
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#define T6 0x4787c62a |
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#define T7 /* 0xa8304613 */ (T_MASK ^ 0x57cfb9ec) |
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#define T8 /* 0xfd469501 */ (T_MASK ^ 0x02b96afe) |
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#define T9 0x698098d8 |
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#define T10 /* 0x8b44f7af */ (T_MASK ^ 0x74bb0850) |
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#define T11 /* 0xffff5bb1 */ (T_MASK ^ 0x0000a44e) |
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#define T12 /* 0x895cd7be */ (T_MASK ^ 0x76a32841) |
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#define T13 0x6b901122 |
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#define T14 /* 0xfd987193 */ (T_MASK ^ 0x02678e6c) |
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#define T15 /* 0xa679438e */ (T_MASK ^ 0x5986bc71) |
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#define T16 0x49b40821 |
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#define T17 /* 0xf61e2562 */ (T_MASK ^ 0x09e1da9d) |
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#define T18 /* 0xc040b340 */ (T_MASK ^ 0x3fbf4cbf) |
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#define T19 0x265e5a51 |
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#define T20 /* 0xe9b6c7aa */ (T_MASK ^ 0x16493855) |
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#define T21 /* 0xd62f105d */ (T_MASK ^ 0x29d0efa2) |
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#define T22 0x02441453 |
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#define T23 /* 0xd8a1e681 */ (T_MASK ^ 0x275e197e) |
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#define T24 /* 0xe7d3fbc8 */ (T_MASK ^ 0x182c0437) |
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#define T25 0x21e1cde6 |
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#define T26 /* 0xc33707d6 */ (T_MASK ^ 0x3cc8f829) |
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#define T27 /* 0xf4d50d87 */ (T_MASK ^ 0x0b2af278) |
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#define T28 0x455a14ed |
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#define T29 /* 0xa9e3e905 */ (T_MASK ^ 0x561c16fa) |
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#define T30 /* 0xfcefa3f8 */ (T_MASK ^ 0x03105c07) |
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#define T31 0x676f02d9 |
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#define T32 /* 0x8d2a4c8a */ (T_MASK ^ 0x72d5b375) |
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#define T33 /* 0xfffa3942 */ (T_MASK ^ 0x0005c6bd) |
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#define T34 /* 0x8771f681 */ (T_MASK ^ 0x788e097e) |
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#define T35 0x6d9d6122 |
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#define T36 /* 0xfde5380c */ (T_MASK ^ 0x021ac7f3) |
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#define T37 /* 0xa4beea44 */ (T_MASK ^ 0x5b4115bb) |
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#define T38 0x4bdecfa9 |
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#define T39 /* 0xf6bb4b60 */ (T_MASK ^ 0x0944b49f) |
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#define T40 /* 0xbebfbc70 */ (T_MASK ^ 0x4140438f) |
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#define T41 0x289b7ec6 |
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#define T42 /* 0xeaa127fa */ (T_MASK ^ 0x155ed805) |
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#define T43 /* 0xd4ef3085 */ (T_MASK ^ 0x2b10cf7a) |
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#define T44 0x04881d05 |
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#define T45 /* 0xd9d4d039 */ (T_MASK ^ 0x262b2fc6) |
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110 |
#define T46 /* 0xe6db99e5 */ (T_MASK ^ 0x1924661a) |
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111 |
#define T47 0x1fa27cf8 |
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112 |
#define T48 /* 0xc4ac5665 */ (T_MASK ^ 0x3b53a99a) |
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113 |
#define T49 /* 0xf4292244 */ (T_MASK ^ 0x0bd6ddbb) |
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114 |
#define T50 0x432aff97 |
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115 |
#define T51 /* 0xab9423a7 */ (T_MASK ^ 0x546bdc58) |
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116 |
#define T52 /* 0xfc93a039 */ (T_MASK ^ 0x036c5fc6) |
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117 |
#define T53 0x655b59c3 |
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118 |
#define T54 /* 0x8f0ccc92 */ (T_MASK ^ 0x70f3336d) |
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119 |
#define T55 /* 0xffeff47d */ (T_MASK ^ 0x00100b82) |
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120 |
#define T56 /* 0x85845dd1 */ (T_MASK ^ 0x7a7ba22e) |
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121 |
#define T57 0x6fa87e4f |
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122 |
#define T58 /* 0xfe2ce6e0 */ (T_MASK ^ 0x01d3191f) |
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123 |
#define T59 /* 0xa3014314 */ (T_MASK ^ 0x5cfebceb) |
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124 |
#define T60 0x4e0811a1 |
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125 |
#define T61 /* 0xf7537e82 */ (T_MASK ^ 0x08ac817d) |
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126 |
#define T62 /* 0xbd3af235 */ (T_MASK ^ 0x42c50dca) |
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127 |
#define T63 0x2ad7d2bb |
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128 |
#define T64 /* 0xeb86d391 */ (T_MASK ^ 0x14792c6e) |
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129 |
|
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130 |
|
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131 |
static void |
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132 |
md5_process(md5_state_t *pms, const md5_byte_t *data /*[64]*/) |
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133 |
{ |
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134 |
md5_word_t |
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135 |
a = pms->abcd[0], b = pms->abcd[1], |
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c = pms->abcd[2], d = pms->abcd[3]; |
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md5_word_t t; |
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138 |
#if BYTE_ORDER > 0 |
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139 |
/* Define storage only for big-endian CPUs. */ |
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md5_word_t X[16]; |
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141 |
#else |
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142 |
/* Define storage for little-endian or both types of CPUs. */ |
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143 |
md5_word_t xbuf[16]; |
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144 |
const md5_word_t *X; |
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145 |
#endif |
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146 |
|
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147 |
{ |
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148 |
#if BYTE_ORDER == 0 |
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149 |
/* |
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150 |
* Determine dynamically whether this is a big-endian or |
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151 |
* little-endian machine, since we can use a more efficient |
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152 |
* algorithm on the latter. |
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153 |
*/ |
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154 |
static const int w = 1; |
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155 |
|
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156 |
if (*((const md5_byte_t *)&w)) /* dynamic little-endian */ |
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157 |
#endif |
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158 |
#if BYTE_ORDER <= 0 /* little-endian */ |
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159 |
{ |
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160 |
/* |
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161 |
* On little-endian machines, we can process properly aligned |
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162 |
* data without copying it. |
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163 |
*/ |
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164 |
if (!((data - (const md5_byte_t *)0) & 3)) { |
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165 |
/* data are properly aligned */ |
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166 |
X = (const md5_word_t *)data; |
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167 |
} else { |
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168 |
/* not aligned */ |
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169 |
memcpy(xbuf, data, 64); |
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170 |
X = xbuf; |
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171 |
} |
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172 |
} |
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173 |
#endif |
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174 |
#if BYTE_ORDER == 0 |
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175 |
else /* dynamic big-endian */ |
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176 |
#endif |
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177 |
#if BYTE_ORDER >= 0 /* big-endian */ |
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178 |
{ |
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179 |
/* |
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180 |
* On big-endian machines, we must arrange the bytes in the |
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181 |
* right order. |
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182 |
*/ |
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183 |
const md5_byte_t *xp = data; |
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184 |
int i; |
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185 |
|
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186 |
# if BYTE_ORDER == 0 |
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187 |
X = xbuf; /* (dynamic only) */ |
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188 |
# else |
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189 |
# define xbuf X /* (static only) */ |
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190 |
# endif |
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191 |
for (i = 0; i < 16; ++i, xp += 4) |
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192 |
xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); |
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193 |
} |
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194 |
#endif |
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195 |
} |
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196 |
|
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197 |
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) |
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198 |
|
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199 |
/* Round 1. */ |
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200 |
/* Let [abcd k s i] denote the operation |
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201 |
a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */ |
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202 |
#define F(x, y, z) (((x) & (y)) | (~(x) & (z))) |
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203 |
#define SET(a, b, c, d, k, s, Ti)\ |
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204 |
t = a + F(b,c,d) + X[k] + Ti;\ |
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205 |
a = ROTATE_LEFT(t, s) + b |
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206 |
/* Do the following 16 operations. */ |
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207 |
SET(a, b, c, d, 0, 7, T1); |
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208 |
SET(d, a, b, c, 1, 12, T2); |
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209 |
SET(c, d, a, b, 2, 17, T3); |
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210 |
SET(b, c, d, a, 3, 22, T4); |
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211 |
SET(a, b, c, d, 4, 7, T5); |
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212 |
SET(d, a, b, c, 5, 12, T6); |
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213 |
SET(c, d, a, b, 6, 17, T7); |
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214 |
SET(b, c, d, a, 7, 22, T8); |
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215 |
SET(a, b, c, d, 8, 7, T9); |
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216 |
SET(d, a, b, c, 9, 12, T10); |
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217 |
SET(c, d, a, b, 10, 17, T11); |
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218 |
SET(b, c, d, a, 11, 22, T12); |
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219 |
SET(a, b, c, d, 12, 7, T13); |
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220 |
SET(d, a, b, c, 13, 12, T14); |
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221 |
SET(c, d, a, b, 14, 17, T15); |
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222 |
SET(b, c, d, a, 15, 22, T16); |
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|
223 |
#undef SET |
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diff
changeset
|
224 |
|
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
225 |
/* Round 2. */ |
5b0aeef8ba2a
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parents:
diff
changeset
|
226 |
/* Let [abcd k s i] denote the operation |
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parents:
diff
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|
227 |
a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */ |
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parents:
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|
228 |
#define G(x, y, z) (((x) & (z)) | ((y) & ~(z))) |
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parents:
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|
229 |
#define SET(a, b, c, d, k, s, Ti)\ |
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parents:
diff
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|
230 |
t = a + G(b,c,d) + X[k] + Ti;\ |
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parents:
diff
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|
231 |
a = ROTATE_LEFT(t, s) + b |
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parents:
diff
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|
232 |
/* Do the following 16 operations. */ |
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parents:
diff
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|
233 |
SET(a, b, c, d, 1, 5, T17); |
5b0aeef8ba2a
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parents:
diff
changeset
|
234 |
SET(d, a, b, c, 6, 9, T18); |
5b0aeef8ba2a
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parents:
diff
changeset
|
235 |
SET(c, d, a, b, 11, 14, T19); |
5b0aeef8ba2a
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parents:
diff
changeset
|
236 |
SET(b, c, d, a, 0, 20, T20); |
5b0aeef8ba2a
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parents:
diff
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|
237 |
SET(a, b, c, d, 5, 5, T21); |
5b0aeef8ba2a
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parents:
diff
changeset
|
238 |
SET(d, a, b, c, 10, 9, T22); |
5b0aeef8ba2a
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parents:
diff
changeset
|
239 |
SET(c, d, a, b, 15, 14, T23); |
5b0aeef8ba2a
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parents:
diff
changeset
|
240 |
SET(b, c, d, a, 4, 20, T24); |
5b0aeef8ba2a
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parents:
diff
changeset
|
241 |
SET(a, b, c, d, 9, 5, T25); |
5b0aeef8ba2a
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parents:
diff
changeset
|
242 |
SET(d, a, b, c, 14, 9, T26); |
5b0aeef8ba2a
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parents:
diff
changeset
|
243 |
SET(c, d, a, b, 3, 14, T27); |
5b0aeef8ba2a
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parents:
diff
changeset
|
244 |
SET(b, c, d, a, 8, 20, T28); |
5b0aeef8ba2a
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parents:
diff
changeset
|
245 |
SET(a, b, c, d, 13, 5, T29); |
5b0aeef8ba2a
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parents:
diff
changeset
|
246 |
SET(d, a, b, c, 2, 9, T30); |
5b0aeef8ba2a
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parents:
diff
changeset
|
247 |
SET(c, d, a, b, 7, 14, T31); |
5b0aeef8ba2a
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parents:
diff
changeset
|
248 |
SET(b, c, d, a, 12, 20, T32); |
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parents:
diff
changeset
|
249 |
#undef SET |
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|
250 |
|
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parents:
diff
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|
251 |
/* Round 3. */ |
5b0aeef8ba2a
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parents:
diff
changeset
|
252 |
/* Let [abcd k s t] denote the operation |
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parents:
diff
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|
253 |
a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */ |
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parents:
diff
changeset
|
254 |
#define H(x, y, z) ((x) ^ (y) ^ (z)) |
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parents:
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changeset
|
255 |
#define SET(a, b, c, d, k, s, Ti)\ |
5b0aeef8ba2a
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parents:
diff
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|
256 |
t = a + H(b,c,d) + X[k] + Ti;\ |
5b0aeef8ba2a
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parents:
diff
changeset
|
257 |
a = ROTATE_LEFT(t, s) + b |
5b0aeef8ba2a
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parents:
diff
changeset
|
258 |
/* Do the following 16 operations. */ |
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parents:
diff
changeset
|
259 |
SET(a, b, c, d, 5, 4, T33); |
5b0aeef8ba2a
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parents:
diff
changeset
|
260 |
SET(d, a, b, c, 8, 11, T34); |
5b0aeef8ba2a
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parents:
diff
changeset
|
261 |
SET(c, d, a, b, 11, 16, T35); |
5b0aeef8ba2a
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parents:
diff
changeset
|
262 |
SET(b, c, d, a, 14, 23, T36); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
263 |
SET(a, b, c, d, 1, 4, T37); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
264 |
SET(d, a, b, c, 4, 11, T38); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
265 |
SET(c, d, a, b, 7, 16, T39); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
266 |
SET(b, c, d, a, 10, 23, T40); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
267 |
SET(a, b, c, d, 13, 4, T41); |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
268 |
SET(d, a, b, c, 0, 11, T42); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
269 |
SET(c, d, a, b, 3, 16, T43); |
5b0aeef8ba2a
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parents:
diff
changeset
|
270 |
SET(b, c, d, a, 6, 23, T44); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
271 |
SET(a, b, c, d, 9, 4, T45); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
272 |
SET(d, a, b, c, 12, 11, T46); |
5b0aeef8ba2a
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parents:
diff
changeset
|
273 |
SET(c, d, a, b, 15, 16, T47); |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
274 |
SET(b, c, d, a, 2, 23, T48); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
275 |
#undef SET |
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parents:
diff
changeset
|
276 |
|
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
277 |
/* Round 4. */ |
5b0aeef8ba2a
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parents:
diff
changeset
|
278 |
/* Let [abcd k s t] denote the operation |
5b0aeef8ba2a
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parents:
diff
changeset
|
279 |
a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */ |
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parents:
diff
changeset
|
280 |
#define I(x, y, z) ((y) ^ ((x) | ~(z))) |
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parents:
diff
changeset
|
281 |
#define SET(a, b, c, d, k, s, Ti)\ |
5b0aeef8ba2a
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parents:
diff
changeset
|
282 |
t = a + I(b,c,d) + X[k] + Ti;\ |
5b0aeef8ba2a
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parents:
diff
changeset
|
283 |
a = ROTATE_LEFT(t, s) + b |
5b0aeef8ba2a
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parents:
diff
changeset
|
284 |
/* Do the following 16 operations. */ |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
285 |
SET(a, b, c, d, 0, 6, T49); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
286 |
SET(d, a, b, c, 7, 10, T50); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
287 |
SET(c, d, a, b, 14, 15, T51); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
288 |
SET(b, c, d, a, 5, 21, T52); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
289 |
SET(a, b, c, d, 12, 6, T53); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
290 |
SET(d, a, b, c, 3, 10, T54); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
291 |
SET(c, d, a, b, 10, 15, T55); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
292 |
SET(b, c, d, a, 1, 21, T56); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
293 |
SET(a, b, c, d, 8, 6, T57); |
5b0aeef8ba2a
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parents:
diff
changeset
|
294 |
SET(d, a, b, c, 15, 10, T58); |
5b0aeef8ba2a
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parents:
diff
changeset
|
295 |
SET(c, d, a, b, 6, 15, T59); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
296 |
SET(b, c, d, a, 13, 21, T60); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
297 |
SET(a, b, c, d, 4, 6, T61); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
298 |
SET(d, a, b, c, 11, 10, T62); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
299 |
SET(c, d, a, b, 2, 15, T63); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
300 |
SET(b, c, d, a, 9, 21, T64); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
301 |
#undef SET |
5b0aeef8ba2a
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parents:
diff
changeset
|
302 |
|
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
303 |
/* Then perform the following additions. (That is increment each |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
304 |
of the four registers by the value it had before this block |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
305 |
was started.) */ |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
306 |
pms->abcd[0] += a; |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
307 |
pms->abcd[1] += b; |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
308 |
pms->abcd[2] += c; |
5b0aeef8ba2a
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parents:
diff
changeset
|
309 |
pms->abcd[3] += d; |
5b0aeef8ba2a
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parents:
diff
changeset
|
310 |
} |
5b0aeef8ba2a
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parents:
diff
changeset
|
311 |
|
5b0aeef8ba2a
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parents:
diff
changeset
|
312 |
void |
5b0aeef8ba2a
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parents:
diff
changeset
|
313 |
md5_init(md5_state_t *pms) |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
314 |
{ |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
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parents:
diff
changeset
|
315 |
pms->count[0] = pms->count[1] = 0; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
316 |
pms->abcd[0] = 0x67452301; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
317 |
pms->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
318 |
pms->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
319 |
pms->abcd[3] = 0x10325476; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
320 |
} |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
321 |
|
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
322 |
void |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
323 |
md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes) |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
324 |
{ |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
325 |
const md5_byte_t *p = data; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
326 |
int left = nbytes; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
327 |
int offset = (pms->count[0] >> 3) & 63; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
328 |
md5_word_t nbits = (md5_word_t)(nbytes << 3); |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
329 |
|
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
330 |
if (nbytes <= 0) |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
331 |
return; |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
332 |
|
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
333 |
/* Update the message length. */ |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
334 |
pms->count[1] += nbytes >> 29; |
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335 |
pms->count[0] += nbits; |
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336 |
if (pms->count[0] < nbits) |
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|
337 |
pms->count[1]++; |
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parents:
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|
338 |
|
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339 |
/* Process an initial partial block. */ |
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parents:
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|
340 |
if (offset) { |
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parents:
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341 |
int copy = (offset + nbytes > 64 ? 64 - offset : nbytes); |
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|
342 |
|
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|
343 |
memcpy(pms->buf + offset, p, copy); |
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parents:
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|
344 |
if (offset + copy < 64) |
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|
345 |
return; |
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|
346 |
p += copy; |
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parents:
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|
347 |
left -= copy; |
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parents:
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|
348 |
md5_process(pms, pms->buf); |
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parents:
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|
349 |
} |
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parents:
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|
350 |
|
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parents:
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|
351 |
/* Process full blocks. */ |
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parents:
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|
352 |
for (; left >= 64; p += 64, left -= 64) |
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parents:
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|
353 |
md5_process(pms, p); |
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parents:
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|
354 |
|
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parents:
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changeset
|
355 |
/* Process a final partial block. */ |
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parents:
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|
356 |
if (left) |
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parents:
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changeset
|
357 |
memcpy(pms->buf, p, left); |
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parents:
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|
358 |
} |
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parents:
diff
changeset
|
359 |
|
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parents:
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|
360 |
void |
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parents:
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|
361 |
md5_finish(md5_state_t *pms, md5_byte_t digest[16]) |
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Medo <smaxein@googlemail.com>
parents:
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|
362 |
{ |
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parents:
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|
363 |
static const md5_byte_t pad[64] = { |
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More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
364 |
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
365 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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parents:
diff
changeset
|
366 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
367 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
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Medo <smaxein@googlemail.com>
parents:
diff
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|
368 |
}; |
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parents:
diff
changeset
|
369 |
md5_byte_t data[8]; |
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Medo <smaxein@googlemail.com>
parents:
diff
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|
370 |
int i; |
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More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
371 |
|
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More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
372 |
/* Save the length before padding. */ |
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
373 |
for (i = 0; i < 8; ++i) |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
374 |
data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3)); |
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More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
375 |
/* Pad to 56 bytes mod 64. */ |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
376 |
md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1); |
5b0aeef8ba2a
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Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
377 |
/* Append the length. */ |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
378 |
md5_append(pms, data, 8); |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
379 |
for (i = 0; i < 16; ++i) |
5b0aeef8ba2a
More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
380 |
digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3)); |
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More progress on the netplay part of the frontlib
Medo <smaxein@googlemail.com>
parents:
diff
changeset
|
381 |
} |