md4_locl.h revision 296341 
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; (void)HOST_l2c(ll,(s));      \
81        ll=(c)->B; (void)HOST_l2c(ll,(s));      \
82        ll=(c)->C; (void)HOST_l2c(ll,(s));      \
83        ll=(c)->D; (void)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/*
95 * As pointed out by Wei Dai <weidai@eskimo.com>, the above can be simplified
96 * to the code below.  Wei attributes these optimizations to Peter Gutmann's
97 * SHS code, and he attributes it to Rich Schroeppel.
98 */
99#define F(b,c,d)        ((((c) ^ (d)) & (b)) ^ (d))
100#define G(b,c,d)        (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
101#define H(b,c,d)        ((b) ^ (c) ^ (d))
102
103#define R0(a,b,c,d,k,s,t) { \
104        a+=((k)+(t)+F((b),(c),(d))); \
105        a=ROTATE(a,s); };
106
107#define R1(a,b,c,d,k,s,t) { \
108        a+=((k)+(t)+G((b),(c),(d))); \
109        a=ROTATE(a,s); };\
110
111#define R2(a,b,c,d,k,s,t) { \
112        a+=((k)+(t)+H((b),(c),(d))); \
113        a=ROTATE(a,s); };
114