xref: /freebsd/sys/netipsec/ah.h (revision ebacd8013fe5f7fdf9f6a5b286f6680dd2891036)
1 /*	$FreeBSD$	*/
2 /*	$KAME: ah.h,v 1.13 2000/10/18 21:28:00 itojun Exp $	*/
3 
4 /*-
5  * SPDX-License-Identifier: BSD-3-Clause
6  *
7  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the project nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 /*
36  * RFC1826/2402 authentication header.
37  */
38 
39 #ifndef _NETIPSEC_AH_H_
40 #define _NETIPSEC_AH_H_
41 
42 struct ah {
43 	u_int8_t	ah_nxt;		/* Next Header */
44 	u_int8_t	ah_len;		/* Length of data, in 32bit */
45 	u_int16_t	ah_reserve;	/* Reserved for future use */
46 	u_int32_t	ah_spi;		/* Security parameter index */
47 	/* variable size, 32bit bound*/	/* Authentication data */
48 };
49 
50 struct newah {
51 	u_int8_t	ah_nxt;		/* Next Header */
52 	u_int8_t	ah_len;		/* Length of data + 1, in 32bit */
53 	u_int16_t	ah_reserve;	/* Reserved for future use */
54 	u_int32_t	ah_spi;		/* Security parameter index */
55 	u_int32_t	ah_seq;		/* Sequence number field */
56 	/* variable size, 32bit bound*/	/* Authentication data */
57 };
58 #endif /*_NETIPSEC_AH_H_*/
59