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/* $FreeBSD: release/9.1.0/sys/netipsec/esp.h 139823 2005-01-07 01:45:51Z imp $ */
/* $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_*/