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