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      1 /*	$NetBSD: ah.h,v 1.12 2000/07/23 05:23:04 itojun Exp $	*/
      2 /*	$KAME: ah.h,v 1.12 2000/07/20 17:41:01 itojun Exp $	*/
      3 
      4 /*
      5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of the project nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * RFC1826/2402 authentication header.
     35  */
     36 
     37 #ifndef _NETINET6_AH_H_
     38 #define _NETINET6_AH_H_
     39 
     40 struct ah {
     41 	u_int8_t	ah_nxt;		/* Next Header */
     42 	u_int8_t	ah_len;		/* Length of data, in 32bit */
     43 	u_int16_t	ah_reserve;	/* Reserved for future use */
     44 	u_int32_t	ah_spi;		/* Security parameter index */
     45 	/* variable size, 32bit bound*/	/* Authentication data */
     46 };
     47 
     48 struct newah {
     49 	u_int8_t	ah_nxt;		/* Next Header */
     50 	u_int8_t	ah_len;		/* Length of data + 1, in 32bit */
     51 	u_int16_t	ah_reserve;	/* Reserved for future use */
     52 	u_int32_t	ah_spi;		/* Security parameter index */
     53 	u_int32_t	ah_seq;		/* Sequence number field */
     54 	/* variable size, 32bit bound*/	/* Authentication data */
     55 };
     56 
     57 #endif /*_NETINET6_AH_H_*/
     58