1/*	$OpenBSD: michael.h,v 1.2 2012/12/05 23:20:15 deraadt Exp $	*/
2
3/*
4 * Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#ifndef _MICHAEL_H_
20#define _MICHAEL_H_
21
22#define	MICHAEL_BLOCK_LENGTH		8
23#define MICHAEL_RAW_BLOCK_LENGTH	4
24#define	MICHAEL_DIGEST_LENGTH		8
25
26typedef struct michael_context {
27	u_int32_t	michael_key[2];
28	u_int32_t	michael_l, michael_r;
29	u_int32_t	michael_state;
30	u_int		michael_count;
31} MICHAEL_CTX;
32
33__BEGIN_DECLS
34void	 michael_init(MICHAEL_CTX *);
35void	 michael_update(MICHAEL_CTX *, const u_int8_t *, u_int)
36	    __attribute__((__bounded__(__buffer__, 2, 3)));
37void	 michael_final(u_int8_t [MICHAEL_DIGEST_LENGTH], MICHAEL_CTX *)
38	    __attribute__((__bounded__(__minbytes__, 1,
39	    MICHAEL_DIGEST_LENGTH)));
40void	 michael_key(const u_int8_t *, MICHAEL_CTX *)
41	    __attribute__((__bounded__(__minbytes__, 1,
42	    MICHAEL_BLOCK_LENGTH)));
43__END_DECLS
44
45#endif /* _MICHAEL_H_ */
46