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//==========================================================================
//
// include/netinet6/esp.h
//
//==========================================================================
// ####BSDCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
//
// Portions of this software may have been derived from FreeBSD
// or other sources, and if so are covered by the appropriate copyright
// and license included herein.
//
// Portions created by the Free Software Foundation are
// Copyright (C) 2002 Free Software Foundation, Inc.
// -------------------------------------------
// ####BSDCOPYRIGHTEND####
//==========================================================================
/* $KAME: esp.h,v 1.19 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.
*/
/*
* RFC1827/2406 Encapsulated Security Payload.
*/
#ifndef _NETINET6_ESP_H_
#define _NETINET6_ESP_H_
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)*/
};
#ifdef _KERNEL
struct secasvar;
struct esp_algorithm {
size_t padbound; /* pad boundary, in byte */
int ivlenval; /* iv length, in byte */
int (*mature) __P((struct secasvar *));
int keymin; /* in bits */
int keymax; /* in bits */
int (*schedlen) __P((const struct esp_algorithm *));
const char *name;
int (*ivlen) __P((const struct esp_algorithm *, struct secasvar *));
int (*decrypt) __P((struct mbuf *, size_t,
struct secasvar *, const struct esp_algorithm *, int));
int (*encrypt) __P((struct mbuf *, size_t, size_t,
struct secasvar *, const struct esp_algorithm *, int));
/* not supposed to be called directly */
int (*schedule) __P((const struct esp_algorithm *, struct secasvar *));
int (*blockdecrypt) __P((const struct esp_algorithm *,
struct secasvar *, u_int8_t *, u_int8_t *));
int (*blockencrypt) __P((const struct esp_algorithm *,
struct secasvar *, u_int8_t *, u_int8_t *));
};
extern const struct esp_algorithm *esp_algorithm_lookup __P((int));
extern int esp_max_ivlen __P((void));
/* crypt routines */
extern int esp4_output __P((struct mbuf *, struct ipsecrequest *));
#if (defined(__FreeBSD__) && __FreeBSD__ >= 4)
extern void esp4_input __P((struct mbuf *, int));
#else
extern void esp4_input __P((struct mbuf *, ...));
#endif /* (defined(__FreeBSD__) && __FreeBSD__ >= 4) */
extern size_t esp_hdrsiz __P((struct ipsecrequest *));
#if defined(__NetBSD__) && __NetBSD_Version__ >= 105080000 /* 1.5H */
extern void *esp4_ctlinput __P((int, struct sockaddr *, void *));
#endif
#ifdef INET6
extern int esp6_output __P((struct mbuf *, u_char *, struct mbuf *,
struct ipsecrequest *));
extern int esp6_input __P((struct mbuf **, int *, int));
extern void esp6_ctlinput __P((int, struct sockaddr *, void *));
#endif /* INET6 */
extern int esp_schedule __P((const struct esp_algorithm *, struct secasvar *));
extern int esp_auth __P((struct mbuf *, size_t, size_t,
struct secasvar *, u_char *));
#endif /* _KERNEL */
#endif /* _NETINET6_ESP_H_ */
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