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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 
68 void 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