1 /*	$NetBSD: oakley.h,v 1.5 2006/10/06 12:02:27 manu Exp $	*/
2 
3 /* Id: oakley.h,v 1.13 2005/05/30 20:12:43 fredsen Exp */
4 
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 #ifndef _OAKLEY_H
35 #define _OAKLEY_H
36 
37 #include "vmbuf.h"
38 
39 /* refer to RFC 2409 */
40 
41 /* Attribute Classes */
42 #define OAKLEY_ATTR_ENC_ALG		1 /* B */
43 #define   OAKLEY_ATTR_ENC_ALG_DES		1
44 #define   OAKLEY_ATTR_ENC_ALG_IDEA		2
45 #define   OAKLEY_ATTR_ENC_ALG_BLOWFISH		3
46 #define   OAKLEY_ATTR_ENC_ALG_RC5		4
47 #define   OAKLEY_ATTR_ENC_ALG_3DES		5
48 #define   OAKLEY_ATTR_ENC_ALG_CAST		6
49 #define   OAKLEY_ATTR_ENC_ALG_AES		7
50 #define   OAKLEY_ATTR_ENC_ALG_CAMELLIA		8
51 					/*	65001 - 65535 Private Use */
52 #define OAKLEY_ATTR_HASH_ALG		2 /* B */
53 #define   OAKLEY_ATTR_HASH_ALG_MD5		1
54 #define   OAKLEY_ATTR_HASH_ALG_SHA		2
55 #define   OAKLEY_ATTR_HASH_ALG_TIGER		3
56 #if defined(WITH_SHA2)
57 #define   OAKLEY_ATTR_HASH_ALG_SHA2_256		4
58 #define   OAKLEY_ATTR_HASH_ALG_SHA2_384		5
59 #define   OAKLEY_ATTR_HASH_ALG_SHA2_512		6
60 #endif
61 					/*	65001 - 65535 Private Use */
62 #define OAKLEY_ATTR_AUTH_METHOD		3 /* B */
63 #define   OAKLEY_ATTR_AUTH_METHOD_PSKEY		1
64 #define   OAKLEY_ATTR_AUTH_METHOD_DSSSIG	2
65 #define   OAKLEY_ATTR_AUTH_METHOD_RSASIG	3
66 #define   OAKLEY_ATTR_AUTH_METHOD_RSAENC	4
67 #define   OAKLEY_ATTR_AUTH_METHOD_RSAREV	5
68 #define   OAKLEY_ATTR_AUTH_METHOD_EGENC		6
69 #define   OAKLEY_ATTR_AUTH_METHOD_EGREV		7
70 	/* Hybrid Auth */
71 #ifdef ENABLE_HYBRID
72 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I	64221
73 #define	  OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R	64222
74 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I	64223
75 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R	64224
76 
77 					/*	65001 - 65535 Private Use */
78 
79         /* Plain Xauth */
80 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I	65001
81 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R	65002
82 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I	65003
83 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R	65004
84 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I	65005
85 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R	65006
86 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I	65007
87 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R	65008
88 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I	65009
89 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R	65010
90 #endif
91 
92 					/*	65500 -> still private
93 					 * to avoid clash with GSSAPI_KRB below
94 					 */
95 #define FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I	65500
96 
97 
98 	/*
99 	 * The following are valid when the Vendor ID is one of
100 	 * the following:
101 	 *
102 	 *	MD5("A GSS-API Authentication Method for IKE")
103 	 *	MD5("GSSAPI") (recognized by Windows 2000)
104 	 *	MD5("MS NT5 ISAKMPOAKLEY") (sent by Windows 2000)
105 	 */
106 #define   OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB	65001
107 #define OAKLEY_ATTR_GRP_DESC		4 /* B */
108 #define   OAKLEY_ATTR_GRP_DESC_MODP768		1
109 #define   OAKLEY_ATTR_GRP_DESC_MODP1024		2
110 #define   OAKLEY_ATTR_GRP_DESC_EC2N155		3
111 #define   OAKLEY_ATTR_GRP_DESC_EC2N185		4
112 #define   OAKLEY_ATTR_GRP_DESC_MODP1536		5
113 #define   OAKLEY_ATTR_GRP_DESC_MODP2048		14
114 #define   OAKLEY_ATTR_GRP_DESC_MODP3072		15
115 #define   OAKLEY_ATTR_GRP_DESC_MODP4096		16
116 #define   OAKLEY_ATTR_GRP_DESC_MODP6144		17
117 #define   OAKLEY_ATTR_GRP_DESC_MODP8192		18
118 					/*	32768 - 65535 Private Use */
119 #define OAKLEY_ATTR_GRP_TYPE		5 /* B */
120 #define   OAKLEY_ATTR_GRP_TYPE_MODP		1
121 #define   OAKLEY_ATTR_GRP_TYPE_ECP		2
122 #define   OAKLEY_ATTR_GRP_TYPE_EC2N		3
123 					/*	65001 - 65535 Private Use */
124 #define OAKLEY_ATTR_GRP_PI		6 /* V */
125 #define OAKLEY_ATTR_GRP_GEN_ONE		7 /* V */
126 #define OAKLEY_ATTR_GRP_GEN_TWO		8 /* V */
127 #define OAKLEY_ATTR_GRP_CURVE_A		9 /* V */
128 #define OAKLEY_ATTR_GRP_CURVE_B		10 /* V */
129 #define OAKLEY_ATTR_SA_LD_TYPE		11 /* B */
130 #define   OAKLEY_ATTR_SA_LD_TYPE_DEFAULT	1
131 #define   OAKLEY_ATTR_SA_LD_TYPE_SEC		1
132 #define   OAKLEY_ATTR_SA_LD_TYPE_KB		2
133 #define   OAKLEY_ATTR_SA_LD_TYPE_MAX		3
134 					/*	65001 - 65535 Private Use */
135 #define OAKLEY_ATTR_SA_LD		12 /* V */
136 #define   OAKLEY_ATTR_SA_LD_SEC_DEFAULT		28800 /* 8 hours */
137 #define OAKLEY_ATTR_PRF			13 /* B */
138 #define OAKLEY_ATTR_KEY_LEN		14 /* B */
139 #define OAKLEY_ATTR_FIELD_SIZE		15 /* B */
140 #define OAKLEY_ATTR_GRP_ORDER		16 /* V */
141 #define OAKLEY_ATTR_BLOCK_SIZE		17 /* B */
142 				/*	16384 - 32767 Private Use */
143 
144 	/*
145 	 * The following are valid when the Vendor ID is one of
146 	 * the following:
147 	 *
148 	 *	MD5("A GSS-API Authentication Method for IKE")
149 	 *	MD5("GSSAPI") (recognized by Windows 2000)
150 	 *	MD5("MS NT5 ISAKMPOAKLEY") (sent by Windows 2000)
151 	 */
152 #define OAKLEY_ATTR_GSS_ID		16384
153 
154 #define MAXPADLWORD	20
155 
156 struct dhgroup {
157 	int type;
158 	vchar_t *prime;
159 	int gen1;
160 	int gen2;
161 	vchar_t *curve_a;
162 	vchar_t *curve_b;
163 	vchar_t *order;
164 };
165 
166 /* certificate holder */
167 typedef struct cert_t_tag {
168 	u_int8_t type;		/* type of CERT, must be same to pl->v[0]*/
169 	vchar_t cert;		/* pointer to the CERT */
170 	vchar_t *pl;		/* CERT payload minus isakmp general header */
171 } cert_t;
172 
173 struct ph1handle;
174 struct ph2handle;
175 struct isakmp_ivm;
176 
177 extern int oakley_get_defaultlifetime __P((void));
178 
179 extern int oakley_dhinit __P((void));
180 extern void oakley_dhgrp_free __P((struct dhgroup *));
181 extern int oakley_dh_compute __P((const struct dhgroup *,
182 	vchar_t *, vchar_t *, vchar_t *, vchar_t **));
183 extern int oakley_dh_generate __P((const struct dhgroup *,
184 	vchar_t **, vchar_t **));
185 extern int oakley_setdhgroup __P((int, struct dhgroup **));
186 
187 extern vchar_t *oakley_prf __P((vchar_t *, vchar_t *, struct ph1handle *));
188 extern vchar_t *oakley_hash __P((vchar_t *, struct ph1handle *));
189 
190 extern int oakley_compute_keymat __P((struct ph2handle *, int));
191 
192 #if notyet
193 extern vchar_t *oakley_compute_hashx __P((void));
194 #endif
195 extern vchar_t *oakley_compute_hash3 __P((struct ph1handle *,
196 	u_int32_t, vchar_t *));
197 extern vchar_t *oakley_compute_hash1 __P((struct ph1handle *,
198 	u_int32_t, vchar_t *));
199 extern vchar_t *oakley_ph1hash_common __P((struct ph1handle *, int));
200 extern vchar_t *oakley_ph1hash_base_i __P((struct ph1handle *, int));
201 extern vchar_t *oakley_ph1hash_base_r __P((struct ph1handle *, int));
202 
203 extern int oakley_validate_auth __P((struct ph1handle *));
204 extern int oakley_getmycert __P((struct ph1handle *));
205 extern int oakley_getsign __P((struct ph1handle *));
206 extern vchar_t *oakley_getcr __P((struct ph1handle *));
207 extern int oakley_checkcr __P((struct ph1handle *));
208 extern int oakley_needcr __P((int));
209 struct isakmp_gen;
210 extern int oakley_savecert __P((struct ph1handle *, struct isakmp_gen *));
211 extern int oakley_savecr __P((struct ph1handle *, struct isakmp_gen *));
212 
213 extern int oakley_skeyid __P((struct ph1handle *));
214 extern int oakley_skeyid_dae __P((struct ph1handle *));
215 
216 extern int oakley_compute_enckey __P((struct ph1handle *));
217 extern cert_t *oakley_newcert __P((void));
218 extern void oakley_delcert __P((cert_t *));
219 extern int oakley_newiv __P((struct ph1handle *));
220 extern struct isakmp_ivm *oakley_newiv2 __P((struct ph1handle *, u_int32_t));
221 extern void oakley_delivm __P((struct isakmp_ivm *));
222 extern vchar_t *oakley_do_decrypt __P((struct ph1handle *,
223 	vchar_t *, vchar_t *, vchar_t *));
224 extern vchar_t *oakley_do_encrypt __P((struct ph1handle *,
225 	vchar_t *, vchar_t *, vchar_t *));
226 
227 #ifdef ENABLE_HYBRID
228 #define AUTHMETHOD(iph1)						     \
229     (((iph1)->rmconf->xauth &&						     \
230     (iph1)->approval->authmethod == OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I) ? \
231 	FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I : (iph1)->approval->authmethod)
232 #define RMAUTHMETHOD(iph1)						     \
233     (((iph1)->rmconf->xauth &&						     \
234     (iph1)->rmconf->proposal->authmethod ==                                  \
235 	OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I) ?                             \
236 	FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I :                                  \
237 	(iph1)->rmconf->proposal->authmethod)
238 #else
239 #define AUTHMETHOD(iph1) (iph1)->approval->authmethod
240 #define RMAUTHMETHOD(iph1) (iph1)->rmconf->proposal->authmethod
241 #endif /* ENABLE_HYBRID */
242 
243 #endif /* _OAKLEY_H */
244