ah.h revision 330897 
1/*	$FreeBSD: stable/11/sys/netipsec/ah.h 330897 2018-03-14 03:19:51Z eadler $	*/
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
42struct 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
50struct 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