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- /*
- * 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.
- */
-
- /*
- * RFC1826/2402 authentication header.
- */
-
- #ifndef _NETINET6_AH_H_
- #define _NETINET6_AH_H_
-
- #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__)
- #if defined(_KERNEL) && !defined(_LKM)
- #include "opt_inet.h"
- #endif
- #endif
-
- #include <netkey/keydb.h> /* for struct secasvar */
-
- struct ah {
- u_int8_t ah_nxt; /* Next Header */
- u_int8_t ah_len; /* Length of data, in 32bit */
- u_int16_t ah_reserve; /* Reserved for future use */
- u_int32_t ah_spi; /* Security parameter index */
- /* variable size, 32bit bound*/ /* Authentication data */
- };
-
- struct newah {
- u_int8_t ah_nxt; /* Next Header */
- u_int8_t ah_len; /* Length of data + 1, in 32bit */
- u_int16_t ah_reserve; /* Reserved for future use */
- u_int32_t ah_spi; /* Security parameter index */
- u_int32_t ah_seq; /* Sequence number field */
- /* variable size, 32bit bound*/ /* Authentication data */
- };
-
- struct ah_algorithm_state {
- struct secasvar *sav;
- void* foo; /*per algorithm data - maybe*/
- };
-
- struct ah_algorithm {
- int (*sumsiz) __P((struct secasvar *));
- int (*mature) __P((struct secasvar *));
- int keymin; /* in bits */
- int keymax; /* in bits */
- void (*init) __P((struct ah_algorithm_state *, struct secasvar *));
- void (*update) __P((struct ah_algorithm_state *, caddr_t, size_t));
- void (*result) __P((struct ah_algorithm_state *, caddr_t));
- };
-
- #define AH_MAXSUMSIZE 16
-
- #ifdef KERNEL
- extern struct ah_algorithm ah_algorithms[];
-
- struct inpcb;
- #if INET6
- struct in6pcb;
- #endif
-
- /* cksum routines */
- extern int ah_hdrlen __P((struct secasvar *));
-
- extern size_t ah_hdrsiz __P((struct ipsecrequest *));
- extern void ah4_input __P((struct mbuf *, int));
- extern int ah4_output __P((struct mbuf *, struct ipsecrequest *));
- extern int ah4_calccksum __P((struct mbuf *, caddr_t,
- struct ah_algorithm *, struct secasvar *));
-
- #if INET6
- extern int ah6_input __P((struct mbuf **, int *, int));
- extern int ah6_output __P((struct mbuf *, u_char *, struct mbuf *,
- struct ipsecrequest *));
- extern int ah6_calccksum __P((struct mbuf *, caddr_t,
- struct ah_algorithm *, struct secasvar *));
- #endif /* INET6 */
-
- #endif /*KERNEL*/
-
- #endif /*_NETINET6_AH_H_*/
-