/contrib/bind9/lib/isc/include/isc/hmacmd5.h

 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/* $Id: hmacmd5.h,v 1.14 2009/02/06 23:47:42 tbox Exp $ */
19
20/*! \file isc/hmacmd5.h
21 * \brief This is the header file for the HMAC-MD5 keyed hash algorithm
22 * described in RFC2104.
23 */
24
25#ifndef ISC_HMACMD5_H
26#define ISC_HMACMD5_H 1
27
28#include <isc/lang.h>
29#include <isc/md5.h>
30#include <isc/platform.h>
31#include <isc/types.h>
32
33#define ISC_HMACMD5_KEYLENGTH 64
34
35#ifdef ISC_PLATFORM_OPENSSLHASH
36#include <openssl/hmac.h>
37
38typedef HMAC_CTX isc_hmacmd5_t;
39
40#else
41
42typedef struct {
43	isc_md5_t md5ctx;
44	unsigned char key[ISC_HMACMD5_KEYLENGTH];
45} isc_hmacmd5_t;
46#endif
47
48ISC_LANG_BEGINDECLS
49
50void
51isc_hmacmd5_init(isc_hmacmd5_t *ctx, const unsigned char *key,
52		 unsigned int len);
53
54void
55isc_hmacmd5_invalidate(isc_hmacmd5_t *ctx);
56
57void
58isc_hmacmd5_update(isc_hmacmd5_t *ctx, const unsigned char *buf,
59		   unsigned int len);
60
61void
62isc_hmacmd5_sign(isc_hmacmd5_t *ctx, unsigned char *digest);
63
64isc_boolean_t
65isc_hmacmd5_verify(isc_hmacmd5_t *ctx, unsigned char *digest);
66
67isc_boolean_t
68isc_hmacmd5_verify2(isc_hmacmd5_t *ctx, unsigned char *digest, size_t len);
69
70ISC_LANG_ENDDECLS
71
72#endif /* ISC_HMACMD5_H */