170 lines
7.2 KiB
C
170 lines
7.2 KiB
C
/*
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* Copyright (c) 2008-2013, 2023 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/* $FreeBSD: src/sys/netinet6/esp.h,v 1.2.2.2 2001/07/03 11:01:49 ume Exp $ */
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/* $KAME: esp.h,v 1.16 2000/10/18 21:28:00 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* RFC1827/2406 Encapsulated Security Payload.
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*/
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#ifndef _NETINET6_ESP_H_
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#define _NETINET6_ESP_H_
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#include <sys/appleapiopts.h>
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#include <sys/types.h>
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struct esp {
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u_int32_t esp_spi; /* ESP */
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/*variable size, 32bit bound*/ /* Initialization Vector */
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/*variable size*/ /* Payload data */
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/*variable size*/ /* padding */
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/*8bit*/ /* pad size */
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/*8bit*/ /* next header */
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/*8bit*/ /* next header */
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/*variable size, 32bit bound*/ /* Authentication data (new IPsec) */
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};
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struct newesp {
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u_int32_t esp_spi; /* ESP */
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u_int32_t esp_seq; /* Sequence number */
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/*variable size*/ /* (IV and) Payload data */
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/*variable size*/ /* padding */
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/*8bit*/ /* pad size */
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/*8bit*/ /* next header */
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/*8bit*/ /* next header */
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/*variable size, 32bit bound*/ /* Authentication data */
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};
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struct esptail {
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u_int8_t esp_padlen; /* pad length */
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u_int8_t esp_nxt; /* Next header */
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/*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/
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};
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#ifdef BSD_KERNEL_PRIVATE
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struct secasvar;
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#define ESP_ASSERT(_cond, _format, ...) \
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do { \
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if (__improbable(!(_cond))) { \
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panic("%s:%d " _format, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
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} \
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} while (0)
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#define ESP_CHECK_ARG(_arg) ESP_ASSERT(_arg != NULL, #_arg " is NULL")
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#define _esp_log(_level, _format, ...) \
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log(_level, "%s:%d " _format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
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#define esp_log_err(_format, ...) _esp_log(LOG_ERR, _format, ##__VA_ARGS__)
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#define esp_log_default(_format, ...) _esp_log(LOG_NOTICE, _format, ##__VA_ARGS__)
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#define esp_log_info(_format, ...) _esp_log(LOG_INFO, _format, ##__VA_ARGS__)
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#define _esp_packet_log(_level, _format, ...) \
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ipseclog((_level, "%s:%d " _format, __FUNCTION__, __LINE__, ##__VA_ARGS__))
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#define esp_packet_log_err(_format, ...) _esp_packet_log(LOG_ERR, _format, ##__VA_ARGS__)
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struct esp_algorithm {
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uint32_t padbound; /* pad boundary, in byte */
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int ivlenval; /* iv length, in byte */
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int (*mature)(struct secasvar *);
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u_int16_t keymin; /* in bits */
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u_int16_t keymax; /* in bits */
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size_t (*schedlen)(const struct esp_algorithm *);
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const char *name;
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int (*ivlen)(const struct esp_algorithm *, struct secasvar *);
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int (*decrypt)(struct mbuf *, size_t,
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struct secasvar *, const struct esp_algorithm *, int);
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int (*encrypt)(struct mbuf *, size_t, size_t,
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struct secasvar *, const struct esp_algorithm *, int);
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/* not supposed to be called directly */
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int (*schedule)(const struct esp_algorithm *, struct secasvar *);
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int (*blockdecrypt)(const struct esp_algorithm *,
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struct secasvar *, u_int8_t *, u_int8_t *);
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int (*blockencrypt)(const struct esp_algorithm *,
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struct secasvar *, u_int8_t *, u_int8_t *);
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/* For Authenticated Encryption Methods */
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size_t icvlen;
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int (*finalizedecrypt)(struct secasvar *, u_int8_t *, size_t);
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int (*finalizeencrypt)(struct secasvar *, u_int8_t *, size_t);
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int (*encrypt_pkt)(struct secasvar *, uint8_t *, size_t,
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struct newesp *, uint8_t *, size_t, uint8_t *, size_t);
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int (*decrypt_pkt)(struct secasvar *, uint8_t *, size_t,
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struct newesp *, uint8_t *, size_t, uint8_t *, size_t);
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};
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extern os_log_t esp_mpkl_log_object;
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extern const struct esp_algorithm *esp_algorithm_lookup(int);
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extern int esp_max_ivlen(void);
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/* crypt routines */
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extern int esp4_output(struct mbuf *, struct secasvar *);
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extern void esp4_input(struct mbuf *, int off);
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extern struct mbuf *esp4_input_extended(struct mbuf *, int off, ifnet_t interface);
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extern size_t esp_hdrsiz(struct ipsecrequest *);
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extern int esp_kpipe_output(struct secasvar *, kern_packet_t, kern_packet_t);
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extern int esp_kpipe_input(ifnet_t, kern_packet_t, kern_packet_t);
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extern int esp_schedule(const struct esp_algorithm *, struct secasvar *);
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extern int esp_auth(struct mbuf *, size_t, size_t,
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struct secasvar *, u_char *);
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extern int esp_auth_data(struct secasvar *, uint8_t *, size_t, uint8_t *, size_t);
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extern void esp_init(void);
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#endif /* BSD_KERNEL_PRIVATE */
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#endif /* _NETINET6_ESP_H_ */
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