md5.h revision 290001 
1/*
2 * Copyright (C) 2004-2007, 2009, 2010  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/* $Id: md5.h,v 1.20 2010/01/07 23:48:54 tbox Exp $ */
19
20/*! \file isc/md5.h
21 * \brief This is the header file for the MD5 message-digest algorithm.
22 *
23 * The algorithm is due to Ron Rivest.  This code was
24 * written by Colin Plumb in 1993, no copyright is claimed.
25 * This code is in the public domain; do with it what you wish.
26 *
27 * Equivalent code is available from RSA Data Security, Inc.
28 * This code has been tested against that, and is equivalent,
29 * except that you don't need to include two pages of legalese
30 * with every copy.
31 *
32 * To compute the message digest of a chunk of bytes, declare an
33 * MD5Context structure, pass it to MD5Init, call MD5Update as
34 * needed on buffers full of bytes, and then call MD5Final, which
35 * will fill a supplied 16-byte array with the digest.
36 *
37 * Changed so as no longer to depend on Colin Plumb's `usual.h'
38 * header definitions; now uses stuff from dpkg's config.h
39 *  - Ian Jackson <ijackson@nyx.cs.du.edu>.
40 * Still in the public domain.
41 */
42
43#ifndef ISC_MD5_H
44#define ISC_MD5_H 1
45
46#include <isc/lang.h>
47#include <isc/platform.h>
48#include <isc/types.h>
49
50#define ISC_MD5_DIGESTLENGTH 16U
51#define ISC_MD5_BLOCK_LENGTH 64U
52
53#ifdef ISC_PLATFORM_OPENSSLHASH
54#include <openssl/evp.h>
55
56typedef EVP_MD_CTX isc_md5_t;
57
58#else
59
60typedef struct {
61	isc_uint32_t buf[4];
62	isc_uint32_t bytes[2];
63	isc_uint32_t in[16];
64} isc_md5_t;
65#endif
66
67ISC_LANG_BEGINDECLS
68
69void
70isc_md5_init(isc_md5_t *ctx);
71
72void
73isc_md5_invalidate(isc_md5_t *ctx);
74
75void
76isc_md5_update(isc_md5_t *ctx, const unsigned char *buf, unsigned int len);
77
78void
79isc_md5_final(isc_md5_t *ctx, unsigned char *digest);
80
81ISC_LANG_ENDDECLS
82
83#endif /* ISC_MD5_H */
84