1/*-
2 * Copyright (c) 2001, 2002 Allan Saddi <allan@saddi.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: sha256.h,v 1.3 2009/10/27 20:15:39 andreas_kupries Exp $
27 */
28
29#ifndef _SHA256_H
30#define _SHA256_H
31
32#if HAVE_INTTYPES_H
33# include <inttypes.h>
34#else
35# if HAVE_STDINT_H
36#  include <stdint.h>
37# endif
38#endif
39
40#define SHA256_HASH_SIZE 32
41
42/* Hash size in 32-bit words */
43#define SHA256_HASH_WORDS 8
44
45#ifdef _MSC_VER
46typedef unsigned __int64    uint64_t;
47#elif !(defined(__hpux) && defined(__ia64))
48typedef unsigned long long  uint64_t;
49#endif
50
51#if !(defined(__hpux) && defined(__ia64))
52typedef unsigned int        uint32_t;
53typedef unsigned char       uint8_t;
54#endif
55
56struct _SHA256Context {
57  uint64_t totalLength;
58  uint32_t hash[SHA256_HASH_WORDS];
59  uint32_t bufferLength;
60  union {
61    uint32_t words[16];
62    uint8_t bytes[64];
63  } buffer;
64};
65
66typedef struct _SHA256Context SHA256Context;
67typedef struct _SHA256Context SHA256_CTX;
68
69#ifdef __cplusplus
70extern "C" {
71#endif
72
73void SHA256Init (SHA256Context *sc);
74void SHA256Update (SHA256Context *sc, const void *data, uint32_t len);
75void SHA256Final (SHA256Context *sc, uint8_t hash[SHA256_HASH_SIZE]);
76
77void SHA224Init (SHA256Context *sc);
78
79#ifdef __cplusplus
80}
81#endif
82
83#endif /* !_SHA256_H */
84