1/* challenge.h --- Generate a CRAM-MD5 challenge 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 CHALLENGE_H
24#define CHALLENGE_H
25
26#define CRAM_MD5_CHALLENGE_LEN 35
27
28/* Store zero terminated CRAM-MD5 challenge in output buffer. The
29 CHALLENGE buffer must be allocated by the caller, and must have
30 room for CRAM_MD5_CHALLENGE_LEN characters. Returns 0 on success,
31 and -1 on randomness problems. */
32extern int cram_md5_challenge (char challenge[CRAM_MD5_CHALLENGE_LEN]);
33
34#endif /* CHALLENGE_H */
35