ipsec-tools/racoon/oakley.h

   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 "config.h"
  38
  39 #include "vmbuf.h"
  40 #ifndef HAVE_OPENSSL
  41 #include <Security/SecDH.h>
  42 #endif
  43
  44 /* refer to RFC 2409 */
  45
  46 /* Attribute Classes */
  47 #define OAKLEY_ATTR_ENC_ALG             1 /* B */
  48 #define   OAKLEY_ATTR_ENC_ALG_DES               1
  49 #define   OAKLEY_ATTR_ENC_ALG_IDEA              2
  50 #define   OAKLEY_ATTR_ENC_ALG_BLOWFISH          3
  51 #define   OAKLEY_ATTR_ENC_ALG_RC5               4
  52 #define   OAKLEY_ATTR_ENC_ALG_3DES              5
  53 #define   OAKLEY_ATTR_ENC_ALG_CAST              6
  54 #define   OAKLEY_ATTR_ENC_ALG_AES               7
  55                                         /*      65001 - 65535 Private Use */
  56 #define OAKLEY_ATTR_HASH_ALG            2 /* B */
  57 #define   OAKLEY_ATTR_HASH_ALG_MD5              1
  58 #define   OAKLEY_ATTR_HASH_ALG_SHA              2
  59 #define   OAKLEY_ATTR_HASH_ALG_TIGER            3
  60 #if defined(WITH_SHA2)
  61 #define   OAKLEY_ATTR_HASH_ALG_SHA2_256         4
  62 #define   OAKLEY_ATTR_HASH_ALG_SHA2_384         5
  63 #define   OAKLEY_ATTR_HASH_ALG_SHA2_512         6
  64 #endif
  65                                         /*      65001 - 65535 Private Use */
  66 #define OAKLEY_ATTR_AUTH_METHOD         3 /* B */
  67 #define   OAKLEY_ATTR_AUTH_METHOD_PSKEY         1
  68 #define   OAKLEY_ATTR_AUTH_METHOD_DSSSIG        2
  69 #define   OAKLEY_ATTR_AUTH_METHOD_RSASIG        3
  70 #define   OAKLEY_ATTR_AUTH_METHOD_RSAENC        4
  71 #define   OAKLEY_ATTR_AUTH_METHOD_RSAREV        5
  72 #define   OAKLEY_ATTR_AUTH_METHOD_EGENC         6
  73 #define   OAKLEY_ATTR_AUTH_METHOD_EGREV         7
  74         /* Hybrid Auth */
  75 #ifdef ENABLE_HYBRID
  76 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I  64221
  77 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R  64222
  78 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I  64223
  79 #define   OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R  64224
  80
  81                                         /*      65001 - 65535 Private Use */
  82
  83         /* Plain Xauth */
  84 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I   65001
  85 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R   65002
  86 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I  65003
  87 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R  65004
  88 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I  65005
  89 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R  65006
  90 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I  65007
  91 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R  65008
  92 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I  65009
  93 #define OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R  65010
  94 #endif
  95
  96                                         /*      65500 -> still private
  97                                          * to avoid clash with GSSAPI_KRB below
  98                                          */
  99 #define FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I       65500
 100
 101
 102         /*
 103          * The following are valid when the Vendor ID is one of
 104          * the following:
 105          *
 106          *      MD5("A GSS-API Authentication Method for IKE")
 107          *      MD5("GSSAPI") (recognized by Windows 2000)
 108          *      MD5("MS NT5 ISAKMPOAKLEY") (sent by Windows 2000)
 109          */
 110 #define   OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB    65001
 111 #define OAKLEY_ATTR_GRP_DESC            4 /* B */
 112 #define   OAKLEY_ATTR_GRP_DESC_MODP768          1
 113 #define   OAKLEY_ATTR_GRP_DESC_MODP1024         2
 114 #define   OAKLEY_ATTR_GRP_DESC_EC2N155          3
 115 #define   OAKLEY_ATTR_GRP_DESC_EC2N185          4
 116 #define   OAKLEY_ATTR_GRP_DESC_MODP1536         5
 117 #define   OAKLEY_ATTR_GRP_DESC_MODP2048         14
 118 #define   OAKLEY_ATTR_GRP_DESC_MODP3072         15
 119 #define   OAKLEY_ATTR_GRP_DESC_MODP4096         16
 120 #define   OAKLEY_ATTR_GRP_DESC_MODP6144         17
 121 #define   OAKLEY_ATTR_GRP_DESC_MODP8192         18
 122                                         /*      32768 - 65535 Private Use */
 123 #define OAKLEY_ATTR_GRP_TYPE            5 /* B */
 124 #define   OAKLEY_ATTR_GRP_TYPE_MODP             1
 125 #define   OAKLEY_ATTR_GRP_TYPE_ECP              2
 126 #define   OAKLEY_ATTR_GRP_TYPE_EC2N             3
 127                                         /*      65001 - 65535 Private Use */
 128 #define OAKLEY_ATTR_GRP_PI              6 /* V */
 129 #define OAKLEY_ATTR_GRP_GEN_ONE         7 /* V */
 130 #define OAKLEY_ATTR_GRP_GEN_TWO         8 /* V */
 131 #define OAKLEY_ATTR_GRP_CURVE_A         9 /* V */
 132 #define OAKLEY_ATTR_GRP_CURVE_B         10 /* V */
 133 #define OAKLEY_ATTR_SA_LD_TYPE          11 /* B */
 134 #define   OAKLEY_ATTR_SA_LD_TYPE_DEFAULT        1
 135 #define   OAKLEY_ATTR_SA_LD_TYPE_SEC            1
 136 #define   OAKLEY_ATTR_SA_LD_TYPE_KB             2
 137 #define   OAKLEY_ATTR_SA_LD_TYPE_MAX            3
 138                                         /*      65001 - 65535 Private Use */
 139 #define OAKLEY_ATTR_SA_LD               12 /* V */
 140 #define   OAKLEY_ATTR_SA_LD_SEC_DEFAULT         28800 /* 8 hours */
 141 #define OAKLEY_ATTR_PRF                 13 /* B */
 142 #define OAKLEY_ATTR_KEY_LEN             14 /* B */
 143 #define OAKLEY_ATTR_FIELD_SIZE          15 /* B */
 144 #define OAKLEY_ATTR_GRP_ORDER           16 /* V */
 145 #define OAKLEY_ATTR_BLOCK_SIZE          17 /* B */
 146                                 /*      16384 - 32767 Private Use */
 147
 148         /*
 149          * The following are valid when the Vendor ID is one of
 150          * the following:
 151          *
 152          *      MD5("A GSS-API Authentication Method for IKE")
 153          *      MD5("GSSAPI") (recognized by Windows 2000)
 154          *      MD5("MS NT5 ISAKMPOAKLEY") (sent by Windows 2000)
 155          */
 156 #define OAKLEY_ATTR_GSS_ID              16384
 157
 158 #define MAXPADLWORD     20
 159
 160 struct dhgroup {
 161 #ifndef HAVE_OPENSSL
 162         int desc;
 163 #endif
 164         int type;
 165         vchar_t *prime;
 166         int gen1;
 167         int gen2;
 168         vchar_t *curve_a;
 169         vchar_t *curve_b;
 170         vchar_t *order;
 171 };
 172
 173 typedef enum cert_status {
 174         CERT_STATUS_OK = 0,
 175         CERT_STATUS_PREMATURE,
 176         CERT_STATUS_EXPIRED,
 177         CERT_STATUS_INVALID_SUBJNAME,
 178         CERT_STATUS_INVALID_SUBJALTNAME,
 179         CERT_STATUS_INVALID,
 180 } cert_status_t;
 181
 182 #define IS_CERT_STATUS_ERROR(status) (status > CERT_STATUS_OK && status < CERT_STATUS_INVALID)
 183
 184 /* certificate holder */
 185 typedef struct cert_t_tag {
 186         u_int8_t type;          /* type of CERT, must be same to pl->v[0]*/
 187         vchar_t cert;           /* pointer to the CERT */
 188         vchar_t *pl;            /* CERT payload minus isakmp general header */
 189         cert_status_t status;
 190         struct cert_t_tag *chain;
 191 } cert_t;
 192
 193 struct ph1handle;
 194 struct ph2handle;
 195 struct isakmp_ivm;
 196
 197 extern int oakley_get_defaultlifetime __P((void));
 198
 199 extern int oakley_dhinit __P((void));
 200 extern void oakley_dhgrp_free __P((struct dhgroup *));
 201 #ifdef HAVE_OPENSSL
 202 extern int oakley_dh_compute __P((const struct dhgroup *, vchar_t *, vchar_t *, vchar_t *, vchar_t **));
 203 extern int oakley_dh_generate __P((const struct dhgroup *, vchar_t **, vchar_t **));
 204 #else
 205 extern int oakley_dh_compute __P((const struct dhgroup *, vchar_t *, size_t, vchar_t **, SecDHContext));
 206 extern int oakley_dh_generate __P((const struct dhgroup *, vchar_t **, size_t *,  SecDHContext*));
 207 #endif
 208 extern int oakley_setdhgroup __P((int, struct dhgroup **));
 209
 210 extern vchar_t *oakley_prf __P((vchar_t *, vchar_t *, struct ph1handle *));
 211 extern vchar_t *oakley_hash __P((vchar_t *, struct ph1handle *));
 212
 213 extern int oakley_compute_keymat __P((struct ph2handle *, int));
 214
 215 #if notyet
 216 extern vchar_t *oakley_compute_hashx __P((void));
 217 #endif
 218 extern vchar_t *oakley_compute_hash3 __P((struct ph1handle *,
 219         u_int32_t, vchar_t *));
 220 extern vchar_t *oakley_compute_hash1 __P((struct ph1handle *,
 221         u_int32_t, vchar_t *));
 222 extern vchar_t *oakley_ph1hash_common __P((struct ph1handle *, int));
 223 extern vchar_t *oakley_ph1hash_base_i __P((struct ph1handle *, int));
 224 extern vchar_t *oakley_ph1hash_base_r __P((struct ph1handle *, int));
 225
 226 extern int oakley_validate_auth __P((struct ph1handle *));
 227 extern int oakley_getmycert __P((struct ph1handle *));
 228 extern int oakley_getsign __P((struct ph1handle *));
 229 extern cert_t * oakley_get_peer_cert_from_certchain __P((struct ph1handle *));
 230 extern int oakley_find_status_in_certchain __P((cert_t *, cert_status_t));
 231 extern void oakley_verify_certid __P((struct ph1handle *));
 232 extern vchar_t *oakley_getcr __P((struct ph1handle *));
 233 extern int oakley_checkcr __P((struct ph1handle *));
 234 extern int oakley_needcr __P((int));
 235 struct isakmp_gen;
 236 extern int oakley_savecert __P((struct ph1handle *, struct isakmp_gen *));
 237 extern int oakley_savecr __P((struct ph1handle *, struct isakmp_gen *));
 238
 239 extern vchar_t * oakley_getpskall __P((struct ph1handle *));
 240 extern int oakley_skeyid __P((struct ph1handle *));
 241 extern int oakley_skeyid_dae __P((struct ph1handle *));
 242
 243 extern int oakley_compute_enckey __P((struct ph1handle *));
 244 extern cert_t *oakley_newcert __P((void));
 245 extern void oakley_delcert __P((cert_t *));
 246 extern int oakley_newiv __P((struct ph1handle *));
 247 extern struct isakmp_ivm *oakley_newiv2 __P((struct ph1handle *, u_int32_t));
 248 extern void oakley_delivm __P((struct isakmp_ivm *));
 249 extern vchar_t *oakley_do_decrypt __P((struct ph1handle *,
 250         vchar_t *, vchar_t *, vchar_t *));
 251 extern vchar_t *oakley_do_encrypt __P((struct ph1handle *,
 252         vchar_t *, vchar_t *, vchar_t *));
 253
 254 #ifdef ENABLE_HYBRID
 255 #define AUTHMETHOD(iph1)                                                     \
 256     (((iph1)->rmconf->xauth &&                                               \
 257     (iph1)->approval->authmethod == OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I) ? \
 258         FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I : (iph1)->approval->authmethod)
 259 #define RMAUTHMETHOD(iph1)                                                   \
 260     (((iph1)->rmconf->xauth &&                                               \
 261     (iph1)->rmconf->proposal->authmethod ==                                  \
 262         OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I) ?                             \
 263         FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I :                                  \
 264         (iph1)->rmconf->proposal->authmethod)
 265 #else
 266 #define AUTHMETHOD(iph1) (iph1)->approval->authmethod
 267 #define RMAUTHMETHOD(iph1) (iph1)->rmconf->proposal->authmethod
 268 #endif /* ENABLE_HYBRID */
 269
 270 #endif /* _OAKLEY_H */