1/* hmac.h -- hashed message authentication codes
2 Copyright (C) 2005, 2009-2012 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, see <http://www.gnu.org/licenses/>. */
16
17/* Written by Simon Josefsson. */
18
19#ifndef HMAC_H
20# define HMAC_H 1
21
22#include <stddef.h>
23
24/* Compute Hashed Message Authentication Code with MD5, as described
25 in RFC 2104, over BUFFER data of BUFLEN bytes using the KEY of
26 KEYLEN bytes, writing the output to pre-allocated 16 byte minimum
27 RESBUF buffer. Return 0 on success. */
28int
29hmac_md5 (const void *key, size_t keylen,
30 const void *buffer, size_t buflen, void *resbuf);
31
32/* Compute Hashed Message Authentication Code with SHA-1, over BUFFER
33 data of BUFLEN bytes using the KEY of KEYLEN bytes, writing the
34 output to pre-allocated 20 byte minimum RESBUF buffer. Return 0 on
35 success. */
36int
37hmac_sha1 (const void *key, size_t keylen,
38 const void *in, size_t inlen, void *resbuf);
39
40#endif /* HMAC_H */
41