1/* digest.h --- Generate a CRAM-MD5 hex encoded HMAC-MD5 response string.
2 * Copyright (C) 2002-2012 Simon Josefsson
3 *
4 * This file is part of GNU SASL Library.
5 *
6 * GNU SASL Library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public License
8 * as published by the Free Software Foundation; either version 2.1 of
9 * the License, or (at your option) any later version.
10 *
11 * GNU SASL Library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with GNU SASL Library; if not, write to the Free
18 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#ifndef DIGEST_H
24#define DIGEST_H
25
26/* Get size_t. */
27#include <stddef.h>
28
29#define CRAM_MD5_DIGEST_LEN 32
30
31/* Compute hex encoded HMAC-MD5 on the CHALLENGELEN long string
32 CHALLENGE, keyed with SECRET of length SECRETLEN. Use a
33 CHALLENGELEN or SECRETLEN of 0 to indicate that CHALLENGE or
34 SECRET, respectively, is zero terminated. The RESPONSE buffer must
35 be allocated by the caller, and must have room for
36 CRAM_MD5_DIGEST_LEN characters.*/
37extern void cram_md5_digest (const char *challenge,
38 size_t challengelen,
39 const char *secret,
40 size_t secretlen,
41 char response[CRAM_MD5_DIGEST_LEN]);
42
43#endif /* DIGEST_H */
44