xref: /freebsd/crypto/openssh/mac.h (revision d8a0fe102c0cfdfcd5b818f850eff09d8536c9bc)
1 /* $OpenBSD: mac.h,v 1.10 2016/07/08 03:44:42 djm Exp $ */
2 /*
3  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef SSHMAC_H
27 #define SSHMAC_H
28 
29 #include <sys/types.h>
30 
31 struct sshmac {
32 	char	*name;
33 	int	enabled;
34 	u_int	mac_len;
35 	u_char	*key;
36 	u_int	key_len;
37 	int	type;
38 	int	etm;		/* Encrypt-then-MAC */
39 	struct ssh_hmac_ctx	*hmac_ctx;
40 	struct umac_ctx		*umac_ctx;
41 };
42 
43 int	 mac_valid(const char *);
44 char	*mac_alg_list(char);
45 int	 mac_setup(struct sshmac *, char *);
46 int	 mac_init(struct sshmac *);
47 int	 mac_compute(struct sshmac *, u_int32_t, const u_char *, int,
48     u_char *, size_t);
49 int	 mac_check(struct sshmac *, u_int32_t, const u_char *, size_t,
50     const u_char *, size_t);
51 void	 mac_clear(struct sshmac *);
52 
53 #endif /* SSHMAC_H */
54