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b0d623f7 A |
1 | /* |
2 | * Copyright (c) 2008 Apple Inc. All rights reserved. | |
3 | * | |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
5 | * | |
6 | * This file contains Original Code and/or Modifications of Original Code | |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. The rights granted to you under the License | |
10 | * may not be used to create, or enable the creation or redistribution of, | |
11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
12 | * circumvent, violate, or enable the circumvention or violation of, any | |
13 | * terms of an Apple operating system software license agreement. | |
14 | * | |
15 | * Please obtain a copy of the License at | |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
17 | * | |
18 | * The Original Code and all software distributed under the License are | |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
23 | * Please see the License for the specific language governing rights and | |
24 | * limitations under the License. | |
25 | * | |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
27 | */ | |
28 | ||
9bccf70c A |
29 | /* $FreeBSD: src/sys/netinet6/esp.h,v 1.2.2.2 2001/07/03 11:01:49 ume Exp $ */ |
30 | /* $KAME: esp.h,v 1.16 2000/10/18 21:28:00 itojun Exp $ */ | |
1c79356b A |
31 | |
32 | /* | |
33 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * 1. Redistributions of source code must retain the above copyright | |
40 | * notice, this list of conditions and the following disclaimer. | |
41 | * 2. Redistributions in binary form must reproduce the above copyright | |
42 | * notice, this list of conditions and the following disclaimer in the | |
43 | * documentation and/or other materials provided with the distribution. | |
44 | * 3. Neither the name of the project nor the names of its contributors | |
45 | * may be used to endorse or promote products derived from this software | |
46 | * without specific prior written permission. | |
47 | * | |
48 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
58 | * SUCH DAMAGE. | |
59 | */ | |
60 | ||
61 | /* | |
62 | * RFC1827/2406 Encapsulated Security Payload. | |
63 | */ | |
64 | ||
65 | #ifndef _NETINET6_ESP_H_ | |
66 | #define _NETINET6_ESP_H_ | |
9bccf70c | 67 | #include <sys/appleapiopts.h> |
1c79356b | 68 | |
1c79356b A |
69 | |
70 | struct esp { | |
71 | u_int32_t esp_spi; /* ESP */ | |
72 | /*variable size, 32bit bound*/ /* Initialization Vector */ | |
73 | /*variable size*/ /* Payload data */ | |
74 | /*variable size*/ /* padding */ | |
75 | /*8bit*/ /* pad size */ | |
76 | /*8bit*/ /* next header */ | |
77 | /*8bit*/ /* next header */ | |
78 | /*variable size, 32bit bound*/ /* Authentication data (new IPsec) */ | |
79 | }; | |
80 | ||
81 | struct newesp { | |
82 | u_int32_t esp_spi; /* ESP */ | |
83 | u_int32_t esp_seq; /* Sequence number */ | |
84 | /*variable size*/ /* (IV and) Payload data */ | |
85 | /*variable size*/ /* padding */ | |
86 | /*8bit*/ /* pad size */ | |
87 | /*8bit*/ /* next header */ | |
88 | /*8bit*/ /* next header */ | |
89 | /*variable size, 32bit bound*/ /* Authentication data */ | |
90 | }; | |
91 | ||
92 | struct esptail { | |
93 | u_int8_t esp_padlen; /* pad length */ | |
94 | u_int8_t esp_nxt; /* Next header */ | |
95 | /*variable size, 32bit bound*/ /* Authentication data (new IPsec)*/ | |
96 | }; | |
97 | ||
91447636 | 98 | #ifdef KERNEL_PRIVATE |
9bccf70c | 99 | struct secasvar; |
1c79356b | 100 | |
1c79356b A |
101 | struct esp_algorithm { |
102 | size_t padbound; /* pad boundary, in byte */ | |
9bccf70c | 103 | int ivlenval; /* iv length, in byte */ |
91447636 | 104 | int (*mature)(struct secasvar *); |
1c79356b A |
105 | int keymin; /* in bits */ |
106 | int keymax; /* in bits */ | |
91447636 | 107 | int (*schedlen)(const struct esp_algorithm *); |
9bccf70c | 108 | const char *name; |
91447636 A |
109 | int (*ivlen)(const struct esp_algorithm *, struct secasvar *); |
110 | int (*decrypt)(struct mbuf *, size_t, | |
111 | struct secasvar *, const struct esp_algorithm *, int); | |
112 | int (*encrypt)(struct mbuf *, size_t, size_t, | |
113 | struct secasvar *, const struct esp_algorithm *, int); | |
9bccf70c | 114 | /* not supposed to be called directly */ |
91447636 A |
115 | int (*schedule)(const struct esp_algorithm *, struct secasvar *); |
116 | int (*blockdecrypt)(const struct esp_algorithm *, | |
117 | struct secasvar *, u_int8_t *, u_int8_t *); | |
118 | int (*blockencrypt)(const struct esp_algorithm *, | |
119 | struct secasvar *, u_int8_t *, u_int8_t *); | |
1c79356b A |
120 | }; |
121 | ||
91447636 A |
122 | extern const struct esp_algorithm *esp_algorithm_lookup(int); |
123 | extern int esp_max_ivlen(void); | |
1c79356b A |
124 | |
125 | /* crypt routines */ | |
2d21ac55 | 126 | extern int esp4_output(struct mbuf *, struct secasvar *); |
91447636 A |
127 | extern void esp4_input(struct mbuf *, int off); |
128 | extern size_t esp_hdrsiz(struct ipsecrequest *); | |
1c79356b | 129 | |
91447636 A |
130 | extern int esp_schedule(const struct esp_algorithm *, struct secasvar *); |
131 | extern int esp_auth(struct mbuf *, size_t, size_t, | |
132 | struct secasvar *, u_char *); | |
0c530ab8 | 133 | #endif /* KERNEL_PRIVATE */ |
1c79356b | 134 | |
0c530ab8 | 135 | #endif /* _NETINET6_ESP_H_ */ |