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isakmp.h
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isakmp.h
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/* ISAKMP constants.
Copyright (C) 2002 Geoffrey Keating
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id$
*/
#ifndef __ISAKMP_H__
#define __ISAKMP_H__
/* Flag bits for header. */
#define ISAKMP_FLAG_E 0x1
#define ISAKMP_FLAG_C 0x2
#define ISAKMP_FLAG_A 0x4
/* Payload types */
enum isakmp_payload_enum {
ISAKMP_PAYLOAD_NONE = 0, /* RFC 2408 */
ISAKMP_PAYLOAD_SA, /* RFC 2408, Security Association */
ISAKMP_PAYLOAD_P, /* RFC 2408, Proposal */
ISAKMP_PAYLOAD_T, /* RFC 2408, Transform */
ISAKMP_PAYLOAD_KE, /* RFC 2408, Key Exchange */
ISAKMP_PAYLOAD_ID, /* RFC 2408, Identification */
ISAKMP_PAYLOAD_CERT, /* RFC 2408, Certificate */
ISAKMP_PAYLOAD_CR, /* RFC 2408, Certificate Request */
ISAKMP_PAYLOAD_HASH, /* RFC 2408, Hash */
ISAKMP_PAYLOAD_SIG, /* RFC 2408, Signature */
ISAKMP_PAYLOAD_NONCE, /* RFC 2408, Nonce */
ISAKMP_PAYLOAD_N, /* RFC 2408, Notification */
ISAKMP_PAYLOAD_D, /* RFC 2408, Delete */
ISAKMP_PAYLOAD_VID, /* RFC 2408, Vendor ID */
ISAKMP_PAYLOAD_MODECFG_ATTR,
ISAKMP_PAYLOAD_SAK, /* RFC 3547, SA KEK */
ISAKMP_PAYLOAD_SAT, /* RFC 3547, SA TEK */
ISAKMP_PAYLOAD_KD, /* RFC 3547, Key Download */
ISAKMP_PAYLOAD_SEQNO, /* RFC 3547, Sequence number */
ISAKMP_PAYLOAD_POP, /* RFC 3547, Proof of Possession */
ISAKMP_PAYLOAD_NAT_D, /* RFC 3947, NAT Discovery */
ISAKMP_PAYLOAD_NAT_OA, /* RFC 3947, NAT Original Address */
ISAKMP_PAYLOAD_NAT_D_OLD = 0x82,
ISAKMP_PAYLOAD_FRAG = 0x84
};
/* Exchange types. */
enum isakmp_exchange_enum {
ISAKMP_EXCHANGE_NONE = 0,
ISAKMP_EXCHANGE_BASE,
ISAKMP_EXCHANGE_IDENTITY,
ISAKMP_EXCHANGE_AUTH_ONLY,
ISAKMP_EXCHANGE_AGGRESSIVE,
ISAKMP_EXCHANGE_INFORMATIONAL,
ISAKMP_EXCHANGE_MODECFG_TRANSACTION,
ISAKMP_EXCHANGE_IKE_QUICK = 32,
ISAKMP_EXCHANGE_IKE_NEW_GROUP
};
/* DOI types. */
enum isakmp_doi_enum {
ISAKMP_DOI_GENERIC = 0,
ISAKMP_DOI_IPSEC
};
/* Notify message types (error: 1-16383; status: 16384-65535). */
enum isakmp_notify_enum {
ISAKMP_N_INVALID_PAYLOAD_TYPE = 1,
ISAKMP_N_DOI_NOT_SUPPORTED,
ISAKMP_N_SITUATION_NOT_SUPPORTED,
ISAKMP_N_INVALID_COOKIE,
ISAKMP_N_INVALID_MAJOR_VERSION,
ISAKMP_N_INVALID_MINOR_VERSION,
ISAKMP_N_INVALID_EXCHANGE_TYPE,
ISAKMP_N_INVALID_FLAGS,
ISAKMP_N_INVALID_MESSAGE_ID,
ISAKMP_N_INVALID_PROTOCOL_ID,
ISAKMP_N_INVALID_SPI,
ISAKMP_N_INVALID_TRANSFORM_ID,
ISAKMP_N_ATTRIBUTES_NOT_SUPPORTED,
ISAKMP_N_NO_PROPOSAL_CHOSEN,
ISAKMP_N_BAD_PROPOSAL_SYNTAX,
ISAKMP_N_PAYLOAD_MALFORMED,
ISAKMP_N_INVALID_KEY_INFORMATION,
ISAKMP_N_INVALID_ID_INFORMATION,
ISAKMP_N_INVALID_CERT_ENCODING,
ISAKMP_N_INVALID_CERTIFICATE,
ISAKMP_N_CERT_TYPE_UNSUPPORTED,
ISAKMP_N_INVALID_CERT_AUTHORITY,
ISAKMP_N_INVALID_HASH_INFORMATION,
ISAKMP_N_AUTHENTICATION_FAILED,
ISAKMP_N_INVALID_SIGNATURE,
ISAKMP_N_ADDRESS_NOTIFICATION,
ISAKMP_N_NOTIFY_SA_LIFETIME,
ISAKMP_N_CERTIFICATE_UNAVAILABLE,
ISAKMP_N_UNSUPPORTED_EXCHANGE_TYPE,
ISAKMP_N_UNEQUAL_PAYLOAD_LENGTHS,
ISAKMP_N_CONNECTED = 16384,
ISAKMP_N_IPSEC_RESPONDER_LIFETIME = 24576,
ISAKMP_N_IPSEC_REPLAY_STATUS,
ISAKMP_N_IPSEC_INITIAL_CONTACT,
ISAKMP_N_CISCO_HELLO = 30000,
ISAKMP_N_CISCO_WWTEBR,
ISAKMP_N_CISCO_SHUT_UP,
ISAKMP_N_IOS_KEEP_ALIVE_REQ = 32768,
ISAKMP_N_IOS_KEEP_ALIVE_ACK,
ISAKMP_N_R_U_THERE = 36136,
ISAKMP_N_R_U_THERE_ACK,
ISAKMP_N_CISCO_LOAD_BALANCE = 40501,
ISAKMP_N_CISCO_PRESHARED_KEY_HASH = 40503
};
/* Delete with reason values */
/* Note: The values are random, i.e. we don't know them yet */
enum dwr_ike_delete {
IKE_DELETE_SERVER_SHUTDOWN = 0, /* Peer has been shut down */
IKE_DELETE_SERVER_REBOOT, /* Peer has been rebooted. */
IKE_DELETE_MAX_CONNECT_TIME, /* Maximum configured connection time exceeded. */
IKE_DELETE_BY_USER_COMMAND, /* Manually disconnected by administrator. */
IKE_DELETE_BY_ERROR, /* Connectivity to Client lost. */
IKE_DELETE_NO_ERROR, /* Unknown error. */
IKE_DELETE_IDLE_TIMEOUT, /* Maximum idle time for session exceeded. */
IKE_DELETE_P2_PROPOSAL_MISMATCH, /* Policy negotiation failed */
IKE_DELETE_FIREWALL_MISMATCH, /* Firewall policy mismatch. */
IKE_DELETE_CERT_EXPIRED, /* Certificates used with this connection entry have expired. */
IKE_DELETE_BY_EXPIRED_LIFETIME, /* Maximum configured lifetime exceeded. */
DEL_REASON_RESET_SADB /* (found in vpnclient log file) */
};
/* Certificate types. */
enum isakmp_certificate_enum {
ISAKMP_CERT_NONE = 0,
ISAKMP_CERT_PKCS7_X509,
ISAKMP_CERT_PGP,
ISAKMP_CERT_DNS_SIG_KEY,
ISAKMP_CERT_X509_SIG,
ISAKMP_CERT_X509_KEX_EXCHANGE,
ISAKMP_CERT_KERBEROS_TOKENS,
ISAKMP_CERT_CRL,
ISAKMP_CERT_ARL,
ISAKMP_CERT_SPKI,
ISAKMP_CERT_X509_ATTRIBUTE
};
/* IKE attribute types. */
enum ike_attr_enum {
IKE_ATTRIB_ENC = 1,
IKE_ATTRIB_HASH,
IKE_ATTRIB_AUTH_METHOD,
IKE_ATTRIB_GROUP_DESC,
IKE_ATTRIB_GROUP_TYPE,
IKE_ATTRIB_GROUP_PRIME,
IKE_ATTRIB_GROUP_GEN_1,
IKE_ATTRIB_GROUP_GEN_2,
IKE_ATTRIB_GROUP_CURVE_A,
IKE_ATTRIB_GROUP_CURVE_B,
IKE_ATTRIB_LIFE_TYPE,
IKE_ATTRIB_LIFE_DURATION,
IKE_ATTRIB_PRF,
IKE_ATTRIB_KEY_LENGTH,
IKE_ATTRIB_FIELD_SIZE,
IKE_ATTRIB_GROUP_ORDER,
IKE_ATTRIB_BLOCK_SIZE,
IKE_ATTRIB_NORTEL_UNKNOWN = 32767
};
/* IKE encryption algorithm IDs. */
enum ike_enc_enum {
IKE_ENC_NO_CBC = 0,
IKE_ENC_DES_CBC,
IKE_ENC_IDEA_CBC,
IKE_ENC_BLOWFISH_CBC,
IKE_ENC_RC5_R16_B16_CBC,
IKE_ENC_3DES_CBC,
IKE_ENC_CAST_CBC,
IKE_ENC_AES_CBC
};
/* IKE hash algorithm IDs. */
enum ike_hash_enum {
IKE_HASH_MD5 = 1,
IKE_HASH_SHA,
IKE_HASH_TIGER,
IKE_HASH_SHA2_256,
IKE_HASH_SHA2_384,
IKE_HASH_SHA2_512
};
/* IKE authentication method IDs. */
enum ike_auth_enum {
IKE_AUTH_PRESHARED = 1,
IKE_AUTH_DSS,
IKE_AUTH_RSA_SIG,
IKE_AUTH_RSA_ENC,
IKE_AUTH_RSA_ENC_2,
IKE_AUTH_EL_GAMAL_ENC,
IKE_AUTH_EL_GAMAL_ENC_REV,
IKE_AUTH_ECDSA_SIG,
IKE_AUTH_HybridInitRSA = 64221,
IKE_AUTH_HybridRespRSA,
IKE_AUTH_HybridInitDSS,
IKE_AUTH_HybridRespDSS,
IKE_AUTH_XAUTHInitPreShared = 65001,
IKE_AUTH_XAUTHRespPreShared,
IKE_AUTH_XAUTHInitDSS,
IKE_AUTH_XAUTHRespDSS,
IKE_AUTH_XAUTHInitRSA,
IKE_AUTH_XAUTHRespRSA,
IKE_AUTH_XAUTHInitRSAEncryption,
IKE_AUTH_XAUTHRespRSAEncryption,
IKE_AUTH_XAUTHInitRSARevisedEncryption,
IKE_AUTH_XAUTHRespRSARevisedEncryption
};
/* IKE group IDs. */
enum ike_group_enum {
IKE_GROUP_MODP_768 = 1,
IKE_GROUP_MODP_1024,
IKE_GROUP_EC2N_155,
IKE_GROUP_EC2N_185,
IKE_GROUP_MODP_1536,
IKE_GROUP_EC2N_163sect,
IKE_GROUP_EC2N_163K,
IKE_GROUP_EC2N_283sect,
IKE_GROUP_EC2N_283K,
IKE_GROUP_EC2N_409sect,
IKE_GROUP_EC2N_409K,
IKE_GROUP_EC2N_571sect,
IKE_GROUP_EC2N_571K
};
/* IKE group type IDs. */
enum ike_group_type_enum {
IKE_GROUP_TYPE_MODP = 1,
IKE_GROUP_TYPE_ECP,
IKE_GROUP_TYPE_EC2N
};
/* IKE life type IDs. */
enum ike_life_enum {
IKE_LIFE_TYPE_SECONDS = 1,
IKE_LIFE_TYPE_K
};
/* IPSEC situation masks. */
enum isakmp_ipsec_sit_enum {
ISAKMP_IPSEC_SIT_IDENTITY_ONLY = 0x1,
ISAKMP_IPSEC_SIT_SECRECY = 0x2,
ISAKMP_IPSEC_SIT_INTEGRITY = 0x4
};
/* IPSEC Identification types. */
enum isakmp_ipsec_id_enum {
ISAKMP_IPSEC_ID_RESERVED = 0,
ISAKMP_IPSEC_ID_IPV4_ADDR,
ISAKMP_IPSEC_ID_FQDN,
ISAKMP_IPSEC_ID_USER_FQDN,
ISAKMP_IPSEC_ID_IPV4_ADDR_SUBNET,
ISAKMP_IPSEC_ID_IPV6_ADDR,
ISAKMP_IPSEC_ID_IPV6_ADDR_SUBNET,
ISAKMP_IPSEC_ID_IPV4_ADDR_RANGE,
ISAKMP_IPSEC_ID_IPV6_ADDR_RANGE,
ISAKMP_IPSEC_ID_DER_ASN1_DN,
ISAKMP_IPSEC_ID_DER_ASN1_GN,
ISAKMP_IPSEC_ID_KEY_ID
};
/* IPSEC protocol IDs. */
enum isakmp_ipsec_proto_enum {
ISAKMP_IPSEC_PROTO_RESERVED = 0,
ISAKMP_IPSEC_PROTO_ISAKMP,
ISAKMP_IPSEC_PROTO_IPSEC_AH,
ISAKMP_IPSEC_PROTO_IPSEC_ESP,
ISAKMP_IPSEC_PROTO_IPCOMP,
ISAKMP_IPSEC_PROTO_MODECFG = 512 /* hack for simplicity in debug code */
};
/* IPSEC transform IDs. */
enum isakmp_ipsec_key_enum {
ISAKMP_IPSEC_KEY_RESERVED = 0,
ISAKMP_IPSEC_KEY_IKE
};
/* IPSEC AH IDs. */
enum isakmp_ipsec_ah_enum {
ISAKMP_IPSEC_AH_RESERVED = 0,
ISAKMP_IPSEC_AH_MD5 = 2,
ISAKMP_IPSEC_AH_SHA,
ISAKMP_IPSEC_AH_DES,
ISAKMP_IPSEC_AH_SHA2_256,
ISAKMP_IPSEC_AH_SHA2_384,
ISAKMP_IPSEC_AH_SHA2_512,
ISAKMP_IPSEC_AH_RIPEMD
};
/* IPSEC ESP IDs. */
enum isakmp_ipsec_esp_enum {
ISAKMP_IPSEC_ESP_RESERVED = 0,
ISAKMP_IPSEC_ESP_DES_IV64,
ISAKMP_IPSEC_ESP_DES,
ISAKMP_IPSEC_ESP_3DES,
ISAKMP_IPSEC_ESP_RC5,
ISAKMP_IPSEC_ESP_IDEA,
ISAKMP_IPSEC_ESP_CAST,
ISAKMP_IPSEC_ESP_BLOWFISH,
ISAKMP_IPSEC_ESP_3IDEA,
ISAKMP_IPSEC_ESP_DES_IV32,
ISAKMP_IPSEC_ESP_RC4,
ISAKMP_IPSEC_ESP_NULL,
ISAKMP_IPSEC_ESP_AES,
ISAKMP_IPSEC_ESP_AES_128_CTR,
ISAKMP_IPSEC_ESP_AES_MARS = 249,
ISAKMP_IPSEC_ESP_AES_RC6,
ISAKMP_IPSEC_ESP_AES_RIJNDAEL,
ISAKMP_IPSEC_ESP_AES_SERPENT,
ISAKMP_IPSEC_ESP_AES_TWOFISH
};
/* IPSEC attribute types. */
enum isakmp_ipsec_attr_enum {
ISAKMP_IPSEC_ATTRIB_SA_LIFE_TYPE = 1,
ISAKMP_IPSEC_ATTRIB_SA_LIFE_DURATION,
ISAKMP_IPSEC_ATTRIB_GROUP_DESC,
ISAKMP_IPSEC_ATTRIB_ENCAP_MODE,
ISAKMP_IPSEC_ATTRIB_AUTH_ALG,
ISAKMP_IPSEC_ATTRIB_KEY_LENGTH,
ISAKMP_IPSEC_ATTRIB_KEY_ROUNDS,
ISAKMP_IPSEC_ATTRIB_COMP_DICT_SIZE,
ISAKMP_IPSEC_ATTRIB_COMP_PRIVATE_ALG,
ISAKMP_IPSEC_ATTRIB_ECN_TUNNEL
};
/* IPSEC compression IDs. */
enum isakmp_ipsec_ipcomp_enum {
ISAKMP_IPSEC_IPCOMP_RESERVED = 0,
ISAKMP_IPSEC_IPCOMP_OUI,
ISAKMP_IPSEC_IPCOMP_DEFLATE,
ISAKMP_IPSEC_IPCOMP_LZS,
ISAKMP_IPSEC_IPCOMP_V42BIS
};
/* IPSEC lifetime attribute values. */
enum ipsec_life_enum {
IPSEC_LIFE_SECONDS = 1,
IPSEC_LIFE_K
};
/* IPSEC encapsulation attribute numbers. */
enum ipsec_encap_enum {
IPSEC_ENCAP_TUNNEL = 1,
IPSEC_ENCAP_TRANSPORT,
IPSEC_ENCAP_UDP_TUNNEL,
IPSEC_ENCAP_UDP_TRANSPORT,
IPSEC_ENCAP_UDP_TUNNEL_OLD = 61443,
IPSEC_ENCAP_UDP_TRANSPORT_OLD
};
/* IPSEC authentication attribute numbers. */
enum ipsec_auth_enum {
IPSEC_AUTH_HMAC_MD5 = 1,
IPSEC_AUTH_HMAC_SHA,
IPSEC_AUTH_DES_MAC,
IPSEC_AUTH_KPDK
};
/* Other numbers. */
#define ISAKMP_COOKIE_LENGTH 8
#define ISAKMP_VERSION 0x10
/* offsets */
#define ISAKMP_EXCHANGE_TYPE_O 18
#define ISAKMP_I_COOKIE_O 0
#define ISAKMP_R_COOKIE_O 8
#define ISAKMP_MESSAGE_ID_O 20
#define ISAKMP_PAYLOAD_O 28
/* defined in vpnc.c */
extern const unsigned char VID_XAUTH[];
extern const unsigned char VID_DPD[];
extern const unsigned char VID_UNITY[];
extern const unsigned char VID_UNKNOWN[];
extern const unsigned char VID_NATT_00[];
extern const unsigned char VID_NATT_01[];
extern const unsigned char VID_NATT_02[];
extern const unsigned char VID_NATT_02N[];
extern const unsigned char VID_NATT_RFC[];
/* Support for draft-ietf-ipsec-isakmp-mode-cfg-05.txt (yuk). */
enum isakmp_modecfg_cfg_enum {
ISAKMP_MODECFG_CFG_REQUEST = 1,
ISAKMP_MODECFG_CFG_REPLY,
ISAKMP_MODECFG_CFG_SET,
ISAKMP_MODECFG_CFG_ACK
};
enum isakmp_modecfg_attrib_enum {
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP4_ADDRESS = 1,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP4_NETMASK,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP4_DNS,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP4_NBNS,
ISAKMP_MODECFG_ATTRIB_INTERNAL_ADDRESS_EXPIRY,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP4_DHCP,
ISAKMP_MODECFG_ATTRIB_APPLICATION_VERSION,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP6_ADDRESS,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP6_NETMASK,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP6_DNS,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP6_NBNS,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP6_DHCP,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP4_SUBNET,
ISAKMP_MODECFG_ATTRIB_SUPPORTED_ATTRIBUTES,
ISAKMP_MODECFG_ATTRIB_INTERNAL_IP6_SUBNET,
ISAKMP_MODECFG_ATTRIB_CISCO_UNKNOWN_0X0015 = 0x0015,
ISAKMP_XAUTH_06_ATTRIB_TYPE = 0x4088,
ISAKMP_XAUTH_06_ATTRIB_USER_NAME,
ISAKMP_XAUTH_06_ATTRIB_USER_PASSWORD,
ISAKMP_XAUTH_06_ATTRIB_PASSCODE,
ISAKMP_XAUTH_06_ATTRIB_MESSAGE,
ISAKMP_XAUTH_06_ATTRIB_CHALLENGE,
ISAKMP_XAUTH_06_ATTRIB_DOMAIN,
ISAKMP_XAUTH_06_ATTRIB_STATUS,
ISAKMP_XAUTH_06_ATTRIB_NEXT_PIN,
ISAKMP_XAUTH_06_ATTRIB_ANSWER, /* TYPE .. ANSWER is excluded from dump */
ISAKMP_MODECFG_ATTRIB_CISCO_BANNER = 0x7000,
ISAKMP_MODECFG_ATTRIB_CISCO_SAVE_PW,
ISAKMP_MODECFG_ATTRIB_CISCO_DEF_DOMAIN,
ISAKMP_MODECFG_ATTRIB_CISCO_SPLIT_DNS,
ISAKMP_MODECFG_ATTRIB_CISCO_SPLIT_INC,
ISAKMP_MODECFG_ATTRIB_CISCO_UDP_ENCAP_PORT,
ISAKMP_MODECFG_ATTRIB_CISCO_UNKNOWN, /* whatever 0x7006 is... */
ISAKMP_MODECFG_ATTRIB_CISCO_DO_PFS,
/* Cisco Ext: Smartcard Disconnect */
/* Cisco Ext: IKE_CFG_FWTYPE_VENDOR */
/* Cisco Ext: IKE_CFG_FWTYPE_PRODUCT */
/* Cisco Ext: IKE_CFG_FWTYPE_CAPABILITIES??? */
ISAKMP_MODECFG_ATTRIB_CISCO_FW_TYPE,
ISAKMP_MODECFG_ATTRIB_CISCO_BACKUP_SERVER,
ISAKMP_MODECFG_ATTRIB_CISCO_DDNS_HOSTNAME,
ISAKMP_XAUTH_ATTRIB_CISCOEXT_VENDOR = 0x7d88 /* strange cisco things ... need docs! */
};
#endif