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      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