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mac.h
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 void mac_destroy(struct sshmac *);
53 
54 #endif /* SSHMAC_H */
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