1/*	$OpenBSD: sha2.h,v 1.5 2014/11/16 17:39:09 tedu 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 Structure *******************************/
54typedef struct _SHA2_CTX {
55	union {
56		u_int32_t	st32[8];
57		u_int64_t	st64[8];
58	} state;
59	u_int64_t	bitcount[2];
60	u_int8_t	buffer[SHA512_BLOCK_LENGTH];
61} SHA2_CTX;
62
63__BEGIN_DECLS
64void SHA256Init(SHA2_CTX *);
65void SHA256Update(SHA2_CTX *, const void *, size_t)
66	__attribute__((__bounded__(__string__,2,3)));
67void SHA256Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA2_CTX *)
68	__attribute__((__bounded__(__minbytes__,1,SHA256_DIGEST_LENGTH)));
69
70void SHA384Init(SHA2_CTX *);
71void SHA384Update(SHA2_CTX *, const void *, size_t)
72	__attribute__((__bounded__(__string__,2,3)));
73void SHA384Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA2_CTX *)
74	__attribute__((__bounded__(__minbytes__,1,SHA384_DIGEST_LENGTH)));
75
76void SHA512Init(SHA2_CTX *);
77void SHA512Update(SHA2_CTX *, const void *, size_t)
78	__attribute__((__bounded__(__string__,2,3)));
79void SHA512Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA2_CTX *)
80	__attribute__((__bounded__(__minbytes__,1,SHA512_DIGEST_LENGTH)));
81__END_DECLS
82
83#endif /* _SHA2_H */
84