| 1 | /* $KAME: esp.h,v 1.16 2000/10/18 21:28:00 itojun Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | * |
| 6 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. Neither the name of the project nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | /* |
| 35 | * RFC1827/2406 Encapsulated Security Payload. |
| 36 | */ |
| 37 | |
| 38 | #ifndef _NETIPSEC_ESP_H_ |
| 39 | #define _NETIPSEC_ESP_H_ |
| 40 | |
| 41 | struct esp { |
| 42 | u_int32_t esp_spi; /* ESP */ |
| 43 | /*variable size, 32bit bound*/ /* Initialization Vector */ |
| 44 | /*variable size*/ /* Payload data */ |
| 45 | /*variable size*/ /* padding */ |
| 46 | /*8bit*/ /* pad length */ |
| 47 | /*8bit*/ /* next header */ |
| 48 | /*variable size, 32bit bound*/ /* Authentication data (new IPsec) */ |
| 49 | }; |
| 50 | |
| 51 | struct newesp { |
| 52 | u_int32_t esp_spi; /* ESP */ |
| 53 | u_int32_t esp_seq; /* Sequence number */ |
| 54 | /*variable size*/ /* (IV and) Payload data */ |
| 55 | /*variable size*/ /* padding */ |
| 56 | /*8bit*/ /* pad length */ |
| 57 | /*8bit*/ /* next header */ |
| 58 | /*variable size, 32bit bound*/ /* Authentication data */ |
| 59 | }; |
| 60 | |
| 61 | struct esptail { |
| 62 | u_int8_t esp_padlen; /* pad length */ |
| 63 | u_int8_t esp_nxt; /* Next header */ |
| 64 | /*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/ |
| 65 | }; |
| 66 | |
| 67 | #define ESP_ALEN 12 /* 96-bit authenticator */ |
| 68 | #endif /*_NETIPSEC_ESP_H_*/ |