NetBSD/sys/netinet6/esp.h

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/* $NetBSD: esp.h,v 1.5 1999/12/02 05:08:16 itojun Exp $ */
1999-07-04 01:24:45 +04:00
/*
* 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.
*/
/*
* RFC1827/2406 Encapsulated Security Payload.
*/
#ifndef _NETINET6_ESP_H_
#define _NETINET6_ESP_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 secas */
struct esp {
u_int32_t esp_spi; /* ESP */
/*variable size, 32bit bound*/ /* Initialization Vector */
/*variable size*/ /* Payload data */
/*variable size*/ /* padding */
/*8bit*/ /* pad size */
/*8bit*/ /* next header */
/*8bit*/ /* next header */
/*variable size, 32bit bound*/ /* Authentication data (new IPsec) */
};
struct newesp {
u_int32_t esp_spi; /* ESP */
u_int32_t esp_seq; /* Sequence number */
/*variable size*/ /* (IV and) Payload data */
/*variable size*/ /* padding */
/*8bit*/ /* pad size */
/*8bit*/ /* next header */
/*8bit*/ /* next header */
/*variable size, 32bit bound*/ /* Authentication data */
};
struct esptail {
u_int8_t esp_padlen; /* pad length */
u_int8_t esp_nxt; /* Next header */
/*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/
};
struct esp_algorithm_state {
struct secas *sa;
void* foo; /*per algorithm data - maybe*/
};
/* XXX yet to be defined */
struct esp_algorithm {
size_t padbound; /* pad boundary, in byte */
int (*mature) __P((struct secas *));
int keymin; /* in bits */
int keymax; /* in bits */
int (*ivlen) __P((struct secas *));
int (*decrypt) __P((struct mbuf *, size_t,
struct secas *, struct esp_algorithm *, int));
int (*encrypt) __P((struct mbuf *, size_t, size_t,
struct secas *, struct esp_algorithm *, int));
};
#ifdef _KERNEL
extern struct esp_algorithm esp_algorithms[];
/* crypt routines */
struct secasb;
extern int esp4_output __P((struct mbuf *, struct ipsecrequest *));
extern void esp4_input __P((struct mbuf *, ...));
extern size_t esp_hdrsiz __P((struct ipsecrequest *));
#ifdef INET6
extern int esp6_output __P((struct mbuf *, u_char *, struct mbuf *,
struct ipsecrequest *));
extern int esp6_input __P((struct mbuf **, int *, int));
#endif /* INET6 */
#endif /*_KERNEL*/
struct secas;
extern int esp_auth __P((struct mbuf *, size_t, size_t,
struct secas *, u_char *));
#endif /*_NETINET6_ESP_H_*/