1 /* $OpenBSD: michael.h,v 1.1 2006/03/21 18:40:54 reyk 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
26 typedef 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 #include <sys/cdefs.h>
34
35 __BEGIN_DECLS
36 void michael_init(MICHAEL_CTX *);
37 void michael_update(MICHAEL_CTX *, const u_int8_t *, u_int)
38 __attribute__((__bounded__(__buffer__, 2, 3)));
39 void michael_final(u_int8_t [MICHAEL_DIGEST_LENGTH], MICHAEL_CTX *)
40 __attribute__((__bounded__(__minbytes__, 1,
41 MICHAEL_DIGEST_LENGTH)));
42 void michael_key(const u_int8_t *, MICHAEL_CTX *)
43 __attribute__((__bounded__(__minbytes__, 1,
44 MICHAEL_BLOCK_LENGTH)));
45 __END_DECLS
46
47 #endif /* _MICHAEL_H_ */