1/* $NetBSD: esp.h,v 1.3 2005/12/10 23:44:08 elad Exp $ */
2/* $FreeBSD: src/sys/netipsec/esp.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $ */
3/* $KAME: esp.h,v 1.16 2000/10/18 21:28:00 itojun Exp $ */
4
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 * RFC1827/2406 Encapsulated Security Payload.
36 */
37
38#ifndef _NETIPSEC_ESP_H_
39#define _NETIPSEC_ESP_H_
40
41struct esp {
42 u_int32_t esp_spi; /* ESP */
43 /*variable size, 32bit bound*/ /* Initialization Vector */
44 /*variable size*/ /* Payload data */
45 /*variable size*/ /* padding */
46 /*8bit*/ /* pad size */
47 /*8bit*/ /* next header */
48 /*8bit*/ /* next header */
49 /*variable size, 32bit bound*/ /* Authentication data (new IPsec) */
50};
51
52struct newesp {
53 u_int32_t esp_spi; /* ESP */
54 u_int32_t esp_seq; /* Sequence number */
55 /*variable size*/ /* (IV and) Payload data */
56 /*variable size*/ /* padding */
57 /*8bit*/ /* pad size */
58 /*8bit*/ /* next header */
59 /*8bit*/ /* next header */
60 /*variable size, 32bit bound*/ /* Authentication data */
61};
62
63struct esptail {
64 u_int8_t esp_padlen; /* pad length */
65 u_int8_t esp_nxt; /* Next header */
66 /*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/
67};
68
69#define ESP_ALEN 12 /* 96-bit authenticator */
70#endif /* !_NETIPSEC_ESP_H_ */
71