1/*
2 * Copyright (C) 2004-2007, 2009  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2000, 2001  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#ifndef ISC_SHA1_H
19#define ISC_SHA1_H 1
20
21/* $Id: sha1.h,v 1.19 2009/02/06 23:47:42 tbox Exp $ */
22
23/*	$NetBSD: sha1.h,v 1.2 1998/05/29 22:55:44 thorpej Exp $	*/
24
25/*! \file isc/sha1.h
26 * \brief SHA-1 in C
27 * \author By Steve Reid <steve@edmweb.com>
28 * \note 100% Public Domain
29 */
30
31#include <isc/lang.h>
32#include <isc/platform.h>
33#include <isc/types.h>
34
35#define ISC_SHA1_DIGESTLENGTH 20U
36#define ISC_SHA1_BLOCK_LENGTH 64U
37
38#ifdef ISC_PLATFORM_OPENSSLHASH
39#include <openssl/evp.h>
40
41typedef EVP_MD_CTX isc_sha1_t;
42
43#else
44
45typedef struct {
46	isc_uint32_t state[5];
47	isc_uint32_t count[2];
48	unsigned char buffer[ISC_SHA1_BLOCK_LENGTH];
49} isc_sha1_t;
50#endif
51
52ISC_LANG_BEGINDECLS
53
54void
55isc_sha1_init(isc_sha1_t *ctx);
56
57void
58isc_sha1_invalidate(isc_sha1_t *ctx);
59
60void
61isc_sha1_update(isc_sha1_t *ctx, const unsigned char *data, unsigned int len);
62
63void
64isc_sha1_final(isc_sha1_t *ctx, unsigned char *digest);
65
66ISC_LANG_ENDDECLS
67
68#endif /* ISC_SHA1_H */
69