/* $NetBSD: esp.h,v 1.2 2005/02/26 22:45:13 perry Exp $ */ /* $FreeBSD: src/sys/netipsec/esp.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $ */ /* $KAME: esp.h,v 1.16 2000/10/18 21:28:00 itojun Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * RFC1827/2406 Encapsulated Security Payload. */ #ifndef _NETIPSEC_ESP_H_ #define _NETIPSEC_ESP_H_ struct esp { u_int32_t esp_spi; /* ESP */ /*variable size, 32bit bound*/ /* Initialization Vector */ /*variable size*/ /* Payload data */ /*variable size*/ /* padding */ /*8bit*/ /* pad size */ /*8bit*/ /* next header */ /*8bit*/ /* next header */ /*variable size, 32bit bound*/ /* Authentication data (new IPsec) */ }; struct newesp { u_int32_t esp_spi; /* ESP */ u_int32_t esp_seq; /* Sequence number */ /*variable size*/ /* (IV and) Payload data */ /*variable size*/ /* padding */ /*8bit*/ /* pad size */ /*8bit*/ /* next header */ /*8bit*/ /* next header */ /*variable size, 32bit bound*/ /* Authentication data */ }; struct esptail { u_int8_t esp_padlen; /* pad length */ u_int8_t esp_nxt; /* Next header */ /*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/ }; #define ESP_ALEN 12 /* 96-bit authenticator */ #endif /*_NETIPSEC_ESP_H_*/