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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.
*
* $FreeBSD$
*/
/*
* RFC1827/2406 Encapsulated Security Payload.
*/
#ifndef _NETINET6_ESP_H_
#define _NETINET6_ESP_H_
struct secasvar;
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 secasvar *sav;
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 secasvar *));
int keymin; /* in bits */
int keymax; /* in bits */
int (*ivlen) __P((struct secasvar *));
int (*decrypt) __P((struct mbuf *, size_t,
struct secasvar *, struct esp_algorithm *, int));
int (*encrypt) __P((struct mbuf *, size_t, size_t,
struct secasvar *, struct esp_algorithm *, int));
};
#ifdef _KERNEL
extern struct esp_algorithm esp_algorithms[];
/* crypt routines */
extern int esp4_output __P((struct mbuf *, struct ipsecrequest *));
extern void esp4_input __P((struct mbuf *, int, int));
extern size_t esp_hdrsiz __P((struct ipsecrequest *));
#endif
extern int esp_auth __P((struct mbuf *, size_t, size_t,
struct secasvar *, u_char *));
#endif /*_NETINET6_ESP_H_*/
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