1105197Ssam/*	$FreeBSD$	*/
2105197Ssam/*	$KAME: ah.h,v 1.13 2000/10/18 21:28:00 itojun Exp $	*/
3105197Ssam
4139823Simp/*-
5105197Ssam * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6105197Ssam * All rights reserved.
7105197Ssam *
8105197Ssam * Redistribution and use in source and binary forms, with or without
9105197Ssam * modification, are permitted provided that the following conditions
10105197Ssam * are met:
11105197Ssam * 1. Redistributions of source code must retain the above copyright
12105197Ssam *    notice, this list of conditions and the following disclaimer.
13105197Ssam * 2. Redistributions in binary form must reproduce the above copyright
14105197Ssam *    notice, this list of conditions and the following disclaimer in the
15105197Ssam *    documentation and/or other materials provided with the distribution.
16105197Ssam * 3. Neither the name of the project nor the names of its contributors
17105197Ssam *    may be used to endorse or promote products derived from this software
18105197Ssam *    without specific prior written permission.
19105197Ssam *
20105197Ssam * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21105197Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22105197Ssam * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23105197Ssam * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24105197Ssam * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25105197Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26105197Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27105197Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28105197Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29105197Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30105197Ssam * SUCH DAMAGE.
31105197Ssam */
32105197Ssam
33105197Ssam/*
34105197Ssam * RFC1826/2402 authentication header.
35105197Ssam */
36105197Ssam
37105197Ssam#ifndef _NETIPSEC_AH_H_
38105197Ssam#define _NETIPSEC_AH_H_
39105197Ssam
40105197Ssamstruct ah {
41105197Ssam	u_int8_t	ah_nxt;		/* Next Header */
42105197Ssam	u_int8_t	ah_len;		/* Length of data, in 32bit */
43105197Ssam	u_int16_t	ah_reserve;	/* Reserved for future use */
44105197Ssam	u_int32_t	ah_spi;		/* Security parameter index */
45105197Ssam	/* variable size, 32bit bound*/	/* Authentication data */
46105197Ssam};
47105197Ssam
48105197Ssamstruct newah {
49105197Ssam	u_int8_t	ah_nxt;		/* Next Header */
50105197Ssam	u_int8_t	ah_len;		/* Length of data + 1, in 32bit */
51105197Ssam	u_int16_t	ah_reserve;	/* Reserved for future use */
52105197Ssam	u_int32_t	ah_spi;		/* Security parameter index */
53105197Ssam	u_int32_t	ah_seq;		/* Sequence number field */
54105197Ssam	/* variable size, 32bit bound*/	/* Authentication data */
55105197Ssam};
56105197Ssam#endif /*_NETIPSEC_AH_H_*/
57