1105197Ssam/* $FreeBSD$ */ 2105197Ssam/* $KAME: esp.h,v 1.16 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 * RFC1827/2406 Encapsulated Security Payload. 35105197Ssam */ 36105197Ssam 37105197Ssam#ifndef _NETIPSEC_ESP_H_ 38105197Ssam#define _NETIPSEC_ESP_H_ 39105197Ssam 40105197Ssamstruct esp { 41105197Ssam u_int32_t esp_spi; /* ESP */ 42105197Ssam /*variable size, 32bit bound*/ /* Initialization Vector */ 43105197Ssam /*variable size*/ /* Payload data */ 44105197Ssam /*variable size*/ /* padding */ 45105197Ssam /*8bit*/ /* pad size */ 46105197Ssam /*8bit*/ /* next header */ 47105197Ssam /*8bit*/ /* next header */ 48105197Ssam /*variable size, 32bit bound*/ /* Authentication data (new IPsec) */ 49105197Ssam}; 50105197Ssam 51105197Ssamstruct newesp { 52105197Ssam u_int32_t esp_spi; /* ESP */ 53105197Ssam u_int32_t esp_seq; /* Sequence number */ 54105197Ssam /*variable size*/ /* (IV and) Payload data */ 55105197Ssam /*variable size*/ /* padding */ 56105197Ssam /*8bit*/ /* pad size */ 57105197Ssam /*8bit*/ /* next header */ 58105197Ssam /*8bit*/ /* next header */ 59105197Ssam /*variable size, 32bit bound*/ /* Authentication data */ 60105197Ssam}; 61105197Ssam 62105197Ssamstruct esptail { 63105197Ssam u_int8_t esp_padlen; /* pad length */ 64105197Ssam u_int8_t esp_nxt; /* Next header */ 65105197Ssam /*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/ 66105197Ssam}; 67105197Ssam 68105197Ssam#define ESP_ALEN 12 /* 96-bit authenticator */ 69105197Ssam#endif /*_NETIPSEC_ESP_H_*/ 70