95 lines
3.4 KiB
C
95 lines
3.4 KiB
C
/* $FreeBSD$ */
|
|
/* $KAME: ah.h,v 1.20 2003/08/05 12:21:15 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 *, u_int8_t *, size_t));
|
|
void (*result) __P((struct ah_algorithm_state *, u_int8_t *, size_t));
|
|
};
|
|
|
|
#define AH_MAXSUMSIZE (512 / 8)
|
|
|
|
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 *, u_int8_t *, size_t,
|
|
const struct ah_algorithm *, struct secasvar *));
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NETINET6_AH_H_ */
|