md4_locl.h revision bdfb8ad83da0647e9b9a32792598e8ce7ba3ef4d 
1/* crypto/md4/md4_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/opensslconf.h>
62#include <openssl/md4.h>
63
64#ifndef MD4_LONG_LOG2
65#define MD4_LONG_LOG2 2 /* default to 32 bits */
66#endif
67
68void md4_block_data_order (MD4_CTX *c, const void *p,size_t num);
69
70#define DATA_ORDER_IS_LITTLE_ENDIAN
71
72#define HASH_LONG		MD4_LONG
73#define HASH_CTX		MD4_CTX
74#define HASH_CBLOCK		MD4_CBLOCK
75#define HASH_UPDATE		MD4_Update
76#define HASH_TRANSFORM		MD4_Transform
77#define HASH_FINAL		MD4_Final
78#define	HASH_MAKE_STRING(c,s)	do {	\
79	unsigned long ll;		\
80	ll=(c)->A; HOST_l2c(ll,(s));	\
81	ll=(c)->B; HOST_l2c(ll,(s));	\
82	ll=(c)->C; HOST_l2c(ll,(s));	\
83	ll=(c)->D; HOST_l2c(ll,(s));	\
84	} while (0)
85#define	HASH_BLOCK_DATA_ORDER	md4_block_data_order
86
87#include "md32_common.h"
88
89/*
90#define	F(x,y,z)	(((x) & (y))  |  ((~(x)) & (z)))
91#define	G(x,y,z)	(((x) & (y))  |  ((x) & ((z))) | ((y) & ((z))))
92*/
93
94/* As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
95 * simplified to the code below.  Wei attributes these optimizations
96 * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
97 */
98#define	F(b,c,d)	((((c) ^ (d)) & (b)) ^ (d))
99#define G(b,c,d)	(((b) & (c)) | ((b) & (d)) | ((c) & (d)))
100#define	H(b,c,d)	((b) ^ (c) ^ (d))
101
102#define R0(a,b,c,d,k,s,t) { \
103	a+=((k)+(t)+F((b),(c),(d))); \
104	a=ROTATE(a,s); };
105
106#define R1(a,b,c,d,k,s,t) { \
107	a+=((k)+(t)+G((b),(c),(d))); \
108	a=ROTATE(a,s); };\
109
110#define R2(a,b,c,d,k,s,t) { \
111	a+=((k)+(t)+H((b),(c),(d))); \
112	a=ROTATE(a,s); };
113