1999-07-04 01:24:45 +04:00
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/* $NetBSD: ah.h,v 1.3 1999/07/03 21:30:17 thorpej Exp $ */
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1999-06-28 10:36:47 +04:00
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* RFC1826/2402 authentication header.
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*/
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#ifndef _NETINET6_AH_H_
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#define _NETINET6_AH_H_
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#include <netkey/keydb.h> /* for struct secas */
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struct ah {
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u_int8_t ah_nxt; /* Next Header */
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u_int8_t ah_len; /* Length of data, in 32bit */
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u_int16_t ah_reserve; /* Reserved for future use */
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u_int32_t ah_spi; /* Security parameter index */
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/* variable size, 32bit bound*/ /* Authentication data */
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};
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struct newah {
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u_int8_t ah_nxt; /* Next Header */
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u_int8_t ah_len; /* Length of data + 1, in 32bit */
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u_int16_t ah_reserve; /* Reserved for future use */
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u_int32_t ah_spi; /* Security parameter index */
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u_int32_t ah_seq; /* Sequence number field */
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/* variable size, 32bit bound*/ /* Authentication data */
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};
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struct ah_algorithm_state {
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struct secas *sa;
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void* foo; /*per algorithm data - maybe*/
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};
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struct ah_algorithm {
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int (*sumsiz) __P((struct secas *));
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int (*mature) __P((struct secas *));
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int keymin; /* in bits */
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int keymax; /* in bits */
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void (*init) __P((struct ah_algorithm_state *, struct secas *));
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void (*update) __P((struct ah_algorithm_state *, caddr_t, size_t));
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void (*result) __P((struct ah_algorithm_state *, caddr_t));
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};
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#define AH_MAXSUMSIZE 16
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#ifdef KERNEL
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extern struct ah_algorithm ah_algorithms[];
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struct inpcb;
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#ifdef INET6
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struct in6pcb;
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#endif
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/* cksum routines */
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extern int ah_hdrlen __P((struct secas *));
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extern size_t ah_hdrsiz __P((struct ipsecrequest *));
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extern void ah4_input __P((struct mbuf *, ...));
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struct secasb;
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extern int ah4_output __P((struct mbuf *, struct ipsecrequest *));
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extern int ah4_calccksum __P((struct mbuf *, caddr_t,
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struct ah_algorithm *, struct secas *));
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#ifdef INET6
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extern int ah6_input __P((struct mbuf **, int *, int));
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extern int ah6_output __P((struct mbuf *, u_char *, struct mbuf *,
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struct ipsecrequest *));
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extern int ah6_calccksum __P((struct mbuf *, caddr_t,
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struct ah_algorithm *, struct secas *));
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#endif /* INET6 */
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#endif /*KERNEL*/
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#endif /*_NETINET6_AH_H_*/
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