1 /* $NetBSD: md5_locl.h,v 1.1.1.2 2014/07/12 11:57:51 spz Exp $ */ 2 /* crypto/md/md5_locl.h */ 3 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) 4 * All rights reserved. 5 * 6 * This package is an SSL implementation written 7 * by Eric Young (eay@cryptsoft.com). 8 * The implementation was written so as to conform with Netscapes SSL. 9 * 10 * This library is free for commercial and non-commercial use as long as 11 * the following conditions are aheared to. The following conditions 12 * apply to all code found in this distribution, be it the RC4, RSA, 13 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 14 * included with this distribution is covered by the same copyright terms 15 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 16 * 17 * Copyright remains Eric Young's, and as such any Copyright notices in 18 * the code are not to be removed. 19 * If this package is used in a product, Eric Young should be given attribution 20 * as the author of the parts of the library used. 21 * This can be in the form of a textual message at program startup or 22 * in documentation (online or textual) provided with the package. 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 3. All advertising materials mentioning features or use of this software 33 * must display the following acknowledgement: 34 * "This product includes cryptographic software written by 35 * Eric Young (eay@cryptsoft.com)" 36 * The word 'cryptographic' can be left out if the rouines from the library 37 * being used are not cryptographic related :-). 38 * 4. If you include any Windows specific code (or a derivative thereof) from 39 * the apps directory (application code) you must include an acknowledgement: 40 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 41 * 42 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * 54 * The licence and distribution terms for any publically available version or 55 * derivative of this code cannot be changed. i.e. this code cannot simply be 56 * copied and put under another distribution licence 57 * [including the GNU Public Licence.] 58 */ 59 60 /* 61 * Portions Copyright (c) 2007,2009 by Internet Systems Consortium, Inc. ("ISC") 62 * 63 * Permission to use, copy, modify, and distribute this software for any 64 * purpose with or without fee is hereby granted, provided that the above 65 * copyright notice and this permission notice appear in all copies. 66 * 67 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 68 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 69 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 70 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 71 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 72 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 73 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 74 * 75 * Internet Systems Consortium, Inc. 76 * 950 Charter Street 77 * Redwood City, CA 94063 78 * <info@isc.org> 79 * https://www.isc.org/ 80 */ 81 82 #include <stdlib.h> 83 #include <string.h> 84 #include "md5.h" 85 86 #define ULONG unsigned long 87 #define UCHAR unsigned char 88 #define UINT unsigned int 89 90 #if defined(NOCONST) 91 #define const 92 #endif 93 94 #undef c2l 95 #define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ 96 l|=(((unsigned long)(*((c)++)))<< 8), \ 97 l|=(((unsigned long)(*((c)++)))<<16), \ 98 l|=(((unsigned long)(*((c)++)))<<24)) 99 100 #undef p_c2l 101 #define p_c2l(c,l,n) { \ 102 switch (n) { \ 103 case 0: l =((unsigned long)(*((c)++))); \ 104 case 1: l|=((unsigned long)(*((c)++)))<< 8; \ 105 case 2: l|=((unsigned long)(*((c)++)))<<16; \ 106 case 3: l|=((unsigned long)(*((c)++)))<<24; \ 107 } \ 108 } 109 110 /* NOTE the pointer is not incremented at the end of this */ 111 #undef c2l_p 112 #define c2l_p(c,l,n) { \ 113 l=0; \ 114 (c)+=n; \ 115 switch (n) { \ 116 case 3: l =((unsigned long)(*(--(c))))<<16; \ 117 case 2: l|=((unsigned long)(*(--(c))))<< 8; \ 118 case 1: l|=((unsigned long)(*(--(c)))) ; \ 119 } \ 120 } 121 122 #undef p_c2l_p 123 #define p_c2l_p(c,l,sc,len) { \ 124 switch (sc) \ 125 { \ 126 case 0: l =((unsigned long)(*((c)++))); \ 127 if (--len == 0) break; \ 128 case 1: l|=((unsigned long)(*((c)++)))<< 8; \ 129 if (--len == 0) break; \ 130 case 2: l|=((unsigned long)(*((c)++)))<<16; \ 131 } \ 132 } 133 134 #undef l2c 135 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 136 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 137 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 138 *((c)++)=(unsigned char)(((l)>>24)&0xff)) 139 140 /* NOTE - c is not incremented as per l2c */ 141 #undef l2cn 142 #define l2cn(l1,l2,c,n) { \ 143 c+=n; \ 144 switch (n) { \ 145 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 146 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 147 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 148 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 149 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 150 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 151 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 152 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 153 } \ 154 } 155 156 /* A nice byte order reversal from Wei Dai <weidai@eskimo.com> */ 157 #if defined(WIN32) 158 /* 5 instructions with rotate instruction, else 9 */ 159 #define Endian_Reverse32(a) \ 160 { \ 161 unsigned long l=(a); \ 162 (a)=((ROTATE(l,8)&0x00FF00FF)|(ROTATE(l,24)&0xFF00FF00)); \ 163 } 164 #else 165 /* 6 instructions with rotate instruction, else 8 */ 166 #define Endian_Reverse32(a) \ 167 { \ 168 unsigned long l=(a); \ 169 l=(((l&0xFF00FF00)>>8L)|((l&0x00FF00FF)<<8L)); \ 170 (a)=ROTATE(l,16L); \ 171 } 172 #endif 173 /* 174 #define F(x,y,z) (((x) & (y)) | ((~(x)) & (z))) 175 #define G(x,y,z) (((x) & (z)) | ((y) & (~(z)))) 176 */ 177 178 /* As pointed out by Wei Dai <weidai@eskimo.com>, the above can be 179 * simplified to the code below. Wei attributes these optimizations 180 * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel. 181 */ 182 #define F(x,y,z) ((((y) ^ (z)) & (x)) ^ (z)) 183 #define G(x,y,z) ((((x) ^ (y)) & (z)) ^ (y)) 184 #define H(x,y,z) ((x) ^ (y) ^ (z)) 185 #define I(x,y,z) (((x) | (~(z))) ^ (y)) 186 187 #undef ROTATE 188 #if defined(WIN32) 189 #define ROTATE(a,n) _lrotl(a,n) 190 #else 191 #define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n)))) 192 #endif 193 194 #define LOCL_R0(a,b,c,d,k,s,t) { \ 195 a+=((k)+(t)+F((b),(c),(d))); \ 196 a=ROTATE(a,s); \ 197 a+=b; };\ 198 199 #define LOCL_R1(a,b,c,d,k,s,t) { \ 200 a+=((k)+(t)+G((b),(c),(d))); \ 201 a=ROTATE(a,s); \ 202 a+=b; }; 203 204 #define LOCL_R2(a,b,c,d,k,s,t) { \ 205 a+=((k)+(t)+H((b),(c),(d))); \ 206 a=ROTATE(a,s); \ 207 a+=b; }; 208 209 #define LOCL_R3(a,b,c,d,k,s,t) { \ 210 a+=((k)+(t)+I((b),(c),(d))); \ 211 a=ROTATE(a,s); \ 212 a+=b; }; 213