1 /* $OpenBSD: sha2.h,v 1.2 2004/04/28 23:11:57 millert Exp $ */
2
3 /*
4 * FILE: sha2.h
5 * AUTHOR: Aaron D. Gifford <me@aarongifford.com>
6 *
7 * Copyright (c) 2000-2001, Aaron D. Gifford
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the copyright holder nor the names of contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
35 */
36
37 #ifndef _SHA2_H
38 #define _SHA2_H
39
40
41 /*** SHA-256/384/512 Various Length Definitions ***********************/
42 #define SHA256_BLOCK_LENGTH 64
43 #define SHA256_DIGEST_LENGTH 32
44 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
45 #define SHA384_BLOCK_LENGTH 128
46 #define SHA384_DIGEST_LENGTH 48
47 #define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
48 #define SHA512_BLOCK_LENGTH 128
49 #define SHA512_DIGEST_LENGTH 64
50 #define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
51
52
53 /*** SHA-256/384/512 Context Structures *******************************/
54 typedef struct _SHA256_CTX {
55 u_int32_t state[8];
56 u_int64_t bitcount;
57 u_int8_t buffer[SHA256_BLOCK_LENGTH];
58 } SHA256_CTX;
59 typedef struct _SHA512_CTX {
60 u_int64_t state[8];
61 u_int64_t bitcount[2];
62 u_int8_t buffer[SHA512_BLOCK_LENGTH];
63 } SHA512_CTX;
64
65 typedef SHA512_CTX SHA384_CTX;
66
67 #include <sys/cdefs.h>
68
69 __BEGIN_DECLS
70 void SHA256_Init(SHA256_CTX *);
71 void SHA256_Update(SHA256_CTX *, const u_int8_t *, size_t)
72 __attribute__((__bounded__(__string__,2,3)));
73 void SHA256_Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA256_CTX *)
74 __attribute__((__bounded__(__minbytes__,1,SHA256_DIGEST_LENGTH)));
75
76 void SHA384_Init(SHA384_CTX *);
77 void SHA384_Update(SHA384_CTX *, const u_int8_t *, size_t)
78 __attribute__((__bounded__(__string__,2,3)));
79 void SHA384_Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA384_CTX *)
80 __attribute__((__bounded__(__minbytes__,1,SHA384_DIGEST_LENGTH)));
81
82 void SHA512_Init(SHA512_CTX *);
83 void SHA512_Update(SHA512_CTX *, const u_int8_t *, size_t)
84 __attribute__((__bounded__(__string__,2,3)));
85 void SHA512_Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA512_CTX *)
86 __attribute__((__bounded__(__minbytes__,1,SHA512_DIGEST_LENGTH)));
87 __END_DECLS
88
89 #endif /* _SHA2_H */