1/* crypto/md5/md5_locl.h */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stdlib.h> 60#include <string.h> 61#include <openssl/e_os2.h> 62#include <openssl/md5.h> 63 64#ifndef MD5_LONG_LOG2 65#define MD5_LONG_LOG2 2 /* default to 32 bits */ 66#endif 67 68#ifdef MD5_ASM 69# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__) || defined(__x86_64) || defined(__x86_64__) 70# if !defined(B_ENDIAN) 71# define md5_block_host_order md5_block_asm_host_order 72# endif 73# elif defined(__sparc) && defined(OPENSSL_SYS_ULTRASPARC) 74 void md5_block_asm_data_order_aligned (MD5_CTX *c, const MD5_LONG *p,size_t num); 75# define HASH_BLOCK_DATA_ORDER_ALIGNED md5_block_asm_data_order_aligned 76# endif 77#endif 78 79void md5_block_host_order (MD5_CTX *c, const void *p,size_t num); 80void md5_block_data_order (MD5_CTX *c, const void *p,size_t num); 81 82#if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__) || defined(__x86_64) || defined(__x86_64__) 83# if !defined(B_ENDIAN) 84/* 85 * *_block_host_order is expected to handle aligned data while 86 * *_block_data_order - unaligned. As algorithm and host (x86) 87 * are in this case of the same "endianness" these two are 88 * otherwise indistinguishable. But normally you don't want to 89 * call the same function because unaligned access in places 90 * where alignment is expected is usually a "Bad Thing". Indeed, 91 * on RISCs you get punished with BUS ERROR signal or *severe* 92 * performance degradation. Intel CPUs are in turn perfectly 93 * capable of loading unaligned data without such drastic side 94 * effect. Yes, they say it's slower than aligned load, but no 95 * exception is generated and therefore performance degradation 96 * is *incomparable* with RISCs. What we should weight here is 97 * costs of unaligned access against costs of aligning data. 98 * According to my measurements allowing unaligned access results 99 * in ~9% performance improvement on Pentium II operating at 100 * 266MHz. I won't be surprised if the difference will be higher 101 * on faster systems:-) 102 * 103 * <appro@fy.chalmers.se> 104 */ 105# define md5_block_data_order md5_block_host_order 106# endif 107#endif 108 109#define DATA_ORDER_IS_LITTLE_ENDIAN 110 111#define HASH_LONG MD5_LONG 112#define HASH_LONG_LOG2 MD5_LONG_LOG2 113#define HASH_CTX MD5_CTX 114#define HASH_CBLOCK MD5_CBLOCK 115#define HASH_LBLOCK MD5_LBLOCK 116#define HASH_UPDATE MD5_Update 117#define HASH_TRANSFORM MD5_Transform 118#define HASH_FINAL MD5_Final 119#define HASH_MAKE_STRING(c,s) do { \ 120 unsigned long ll; \ 121 ll=(c)->A; HOST_l2c(ll,(s)); \ 122 ll=(c)->B; HOST_l2c(ll,(s)); \ 123 ll=(c)->C; HOST_l2c(ll,(s)); \ 124 ll=(c)->D; HOST_l2c(ll,(s)); \ 125 } while (0) 126#define HASH_BLOCK_HOST_ORDER md5_block_host_order 127#if !defined(L_ENDIAN) || defined(md5_block_data_order) 128#define HASH_BLOCK_DATA_ORDER md5_block_data_order 129/* 130 * Little-endians (Intel and Alpha) feel better without this. 131 * It looks like memcpy does better job than generic 132 * md5_block_data_order on copying-n-aligning input data. 133 * But frankly speaking I didn't expect such result on Alpha. 134 * On the other hand I've got this with egcs-1.0.2 and if 135 * program is compiled with another (better?) compiler it 136 * might turn out other way around. 137 * 138 * <appro@fy.chalmers.se> 139 */ 140#endif 141 142#include "md32_common.h" 143 144/* 145#define F(x,y,z) (((x) & (y)) | ((~(x)) & (z))) 146#define G(x,y,z) (((x) & (z)) | ((y) & (~(z)))) 147*/ 148 149/* As pointed out by Wei Dai <weidai@eskimo.com>, the above can be 150 * simplified to the code below. Wei attributes these optimizations 151 * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel. 152 */ 153#define F(b,c,d) ((((c) ^ (d)) & (b)) ^ (d)) 154#define G(b,c,d) ((((b) ^ (c)) & (d)) ^ (c)) 155#define H(b,c,d) ((b) ^ (c) ^ (d)) 156#define I(b,c,d) (((~(d)) | (b)) ^ (c)) 157 158#define R0(a,b,c,d,k,s,t) { \ 159 a+=((k)+(t)+F((b),(c),(d))); \ 160 a=ROTATE(a,s); \ 161 a+=b; };\ 162 163#define R1(a,b,c,d,k,s,t) { \ 164 a+=((k)+(t)+G((b),(c),(d))); \ 165 a=ROTATE(a,s); \ 166 a+=b; }; 167 168#define R2(a,b,c,d,k,s,t) { \ 169 a+=((k)+(t)+H((b),(c),(d))); \ 170 a=ROTATE(a,s); \ 171 a+=b; }; 172 173#define R3(a,b,c,d,k,s,t) { \ 174 a+=((k)+(t)+I((b),(c),(d))); \ 175 a=ROTATE(a,s); \ 176 a+=b; }; 177