| /* $FreeBSD: src/sys/netinet6/ah.h,v 1.7 2002/04/19 04:46:22 suz Exp $ */ |
| /* $KAME: ah.h,v 1.16 2001/09/04 08:43:19 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. |
| */ |
| |
| /* |
| * RFC1826/2402 authentication header. |
| */ |
| |
| #ifndef _NETINET6_AH_H_ |
| #define _NETINET6_AH_H_ |
| |
| #if defined(_KERNEL) && !defined(_LKM) |
| #include "opt_inet.h" |
| #endif |
| |
| 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 */ |
| }; |
| |
| #ifdef _KERNEL |
| struct secasvar; |
| |
| 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 */ |
| const char *name; |
| int (*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 |
| |
| extern const struct ah_algorithm *ah_algorithm_lookup __P((int)); |
| |
| /* 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, size_t, |
| const struct ah_algorithm *, struct secasvar *)); |
| #endif /* _KERNEL */ |
| |
| #endif /* _NETINET6_AH_H_ */ |