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