1 /* $OpenBSD: sha.h,v 1.20 2014/10/20 13:06:54 bcook Exp $ */
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 <stddef.h>
60 
61 #ifndef HEADER_SHA_H
62 #define HEADER_SHA_H
63 #if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__OpenBSD__)
64 #define __bounded__(x, y, z)
65 #endif
66 
67 #include <openssl/opensslconf.h>
68 
69 #ifdef  __cplusplus
70 extern "C" {
71 #endif
72 
73 #if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA1)
74 #error SHA is disabled.
75 #endif
76 
77 /*
78  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
79  * ! SHA_LONG has to be at least 32 bits wide.                    !
80  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
81  */
82 
83 #define SHA_LONG unsigned int
84 
85 #define SHA_LBLOCK	16
86 #define SHA_CBLOCK	(SHA_LBLOCK*4)	/* SHA treats input data as a
87 					 * contiguous array of 32 bit
88 					 * wide big-endian values. */
89 #define SHA_LAST_BLOCK  (SHA_CBLOCK-8)
90 #define SHA_DIGEST_LENGTH 20
91 
92 typedef struct SHAstate_st
93 	{
94 	SHA_LONG h0,h1,h2,h3,h4;
95 	SHA_LONG Nl,Nh;
96 	SHA_LONG data[SHA_LBLOCK];
97 	unsigned int num;
98 	} SHA_CTX;
99 
100 #ifndef OPENSSL_NO_SHA1
101 int SHA1_Init(SHA_CTX *c);
102 int SHA1_Update(SHA_CTX *c, const void *data, size_t len)
103 	__attribute__ ((__bounded__(__buffer__,2,3)));
104 int SHA1_Final(unsigned char *md, SHA_CTX *c);
105 unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md)
106 	__attribute__ ((__bounded__(__buffer__,1,2)));
107 void SHA1_Transform(SHA_CTX *c, const unsigned char *data);
108 #endif
109 
110 #define SHA256_CBLOCK	(SHA_LBLOCK*4)	/* SHA-256 treats input data as a
111 					 * contiguous array of 32 bit
112 					 * wide big-endian values. */
113 #define SHA224_DIGEST_LENGTH	28
114 #define SHA256_DIGEST_LENGTH	32
115 
116 typedef struct SHA256state_st
117 	{
118 	SHA_LONG h[8];
119 	SHA_LONG Nl,Nh;
120 	SHA_LONG data[SHA_LBLOCK];
121 	unsigned int num,md_len;
122 	} SHA256_CTX;
123 
124 #ifndef OPENSSL_NO_SHA256
125 int SHA224_Init(SHA256_CTX *c);
126 int SHA224_Update(SHA256_CTX *c, const void *data, size_t len)
127 	__attribute__ ((__bounded__(__buffer__,2,3)));
128 int SHA224_Final(unsigned char *md, SHA256_CTX *c);
129 unsigned char *SHA224(const unsigned char *d, size_t n,unsigned char *md)
130 	__attribute__ ((__bounded__(__buffer__,1,2)));
131 int SHA256_Init(SHA256_CTX *c);
132 int SHA256_Update(SHA256_CTX *c, const void *data, size_t len)
133 	__attribute__ ((__bounded__(__buffer__,2,3)));
134 int SHA256_Final(unsigned char *md, SHA256_CTX *c);
135 unsigned char *SHA256(const unsigned char *d, size_t n,unsigned char *md)
136 	__attribute__ ((__bounded__(__buffer__,1,2)));
137 void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
138 #endif
139 
140 #define SHA384_DIGEST_LENGTH	48
141 #define SHA512_DIGEST_LENGTH	64
142 
143 #ifndef OPENSSL_NO_SHA512
144 /*
145  * Unlike 32-bit digest algorithms, SHA-512 *relies* on SHA_LONG64
146  * being exactly 64-bit wide. See Implementation Notes in sha512.c
147  * for further details.
148  */
149 #define SHA512_CBLOCK	(SHA_LBLOCK*8)	/* SHA-512 treats input data as a
150 					 * contiguous array of 64 bit
151 					 * wide big-endian values. */
152 #if defined(_LP64)
153 #define SHA_LONG64 unsigned long
154 #define U64(C)     C##UL
155 #else
156 #define SHA_LONG64 unsigned long long
157 #define U64(C)     C##ULL
158 #endif
159 
160 typedef struct SHA512state_st
161 	{
162 	SHA_LONG64 h[8];
163 	SHA_LONG64 Nl,Nh;
164 	union {
165 		SHA_LONG64	d[SHA_LBLOCK];
166 		unsigned char	p[SHA512_CBLOCK];
167 	} u;
168 	unsigned int num,md_len;
169 	} SHA512_CTX;
170 #endif
171 
172 #ifndef OPENSSL_NO_SHA512
173 int SHA384_Init(SHA512_CTX *c);
174 int SHA384_Update(SHA512_CTX *c, const void *data, size_t len)
175 	__attribute__ ((__bounded__(__buffer__,2,3)));
176 int SHA384_Final(unsigned char *md, SHA512_CTX *c);
177 unsigned char *SHA384(const unsigned char *d, size_t n,unsigned char *md)
178 	__attribute__ ((__bounded__(__buffer__,1,2)));
179 int SHA512_Init(SHA512_CTX *c);
180 int SHA512_Update(SHA512_CTX *c, const void *data, size_t len)
181 	__attribute__ ((__bounded__(__buffer__,2,3)));
182 int SHA512_Final(unsigned char *md, SHA512_CTX *c);
183 unsigned char *SHA512(const unsigned char *d, size_t n,unsigned char *md)
184 	__attribute__ ((__bounded__(__buffer__,1,2)));
185 void SHA512_Transform(SHA512_CTX *c, const unsigned char *data);
186 #endif
187 
188 #ifdef  __cplusplus
189 }
190 #endif
191 
192 #endif
193