2 * EAP-FAST definitions (RFC 4851)
3 * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
16 #define EAP_FAST_VERSION 1
17 #define EAP_FAST_KEY_LEN 64
18 #define EAP_FAST_SIMCK_LEN 40
19 #define EAP_FAST_SKS_LEN 40
20 #define EAP_FAST_CMK_LEN 20
22 #define TLS_EXT_PAC_OPAQUE 35
25 * RFC 5422: Section 4.2.1 - Formats for PAC TLV Attributes / Type Field
26 * Note: bit 0x8000 (Mandatory) and bit 0x4000 (Reserved) are also defined
27 * in the general PAC TLV format (Section 4.2).
29 #define PAC_TYPE_PAC_KEY 1
30 #define PAC_TYPE_PAC_OPAQUE 2
31 #define PAC_TYPE_CRED_LIFETIME 3
32 #define PAC_TYPE_A_ID 4
33 #define PAC_TYPE_I_ID 5
35 * 6 was previous assigned for SERVER_PROTECTED_DATA, but
36 * draft-cam-winget-eap-fast-provisioning-02.txt changed this to Reserved.
38 #define PAC_TYPE_A_ID_INFO 7
39 #define PAC_TYPE_PAC_ACKNOWLEDGEMENT 8
40 #define PAC_TYPE_PAC_INFO 9
41 #define PAC_TYPE_PAC_TYPE 10
57 #define EAP_FAST_PAC_KEY_LEN 32
59 /* RFC 5422: 4.2.6 PAC-Type TLV */
60 #define PAC_TYPE_TUNNEL_PAC 1
61 /* Application Specific Short Lived PACs (only in volatile storage) */
62 /* User Authorization PAC */
63 #define PAC_TYPE_USER_AUTHORIZATION 3
64 /* Application Specific Long Lived PACs */
65 /* Machine Authentication PAC */
66 #define PAC_TYPE_MACHINE_AUTHENTICATION 2
71 * Section 3.3 - Key Derivations Used in the EAP-FAST Provisioning Exchange
73 struct eap_fast_key_block_provisioning {
74 /* Extra key material after TLS key_block */
75 u8 session_key_seed[EAP_FAST_SKS_LEN];
76 u8 server_challenge[16]; /* MSCHAPv2 ServerChallenge */
77 u8 client_challenge[16]; /* MSCHAPv2 ClientChallenge */
82 struct tls_connection;
84 struct eap_fast_tlv_parse {
86 size_t eap_payload_tlv_len;
87 struct eap_tlv_crypto_binding_tlv *crypto_binding;
88 size_t crypto_binding_len;
96 void eap_fast_put_tlv_hdr(struct wpabuf *buf, u16 type, u16 len);
97 void eap_fast_put_tlv(struct wpabuf *buf, u16 type, const void *data,
99 void eap_fast_put_tlv_buf(struct wpabuf *buf, u16 type,
100 const struct wpabuf *data);
101 struct wpabuf * eap_fast_tlv_eap_payload(struct wpabuf *buf);
102 void eap_fast_derive_master_secret(const u8 *pac_key, const u8 *server_random,
103 const u8 *client_random, u8 *master_secret);
104 u8 * eap_fast_derive_key(void *ssl_ctx, struct tls_connection *conn,
105 const char *label, size_t len);
106 void eap_fast_derive_eap_msk(const u8 *simck, u8 *msk);
107 void eap_fast_derive_eap_emsk(const u8 *simck, u8 *emsk);
108 int eap_fast_parse_tlv(struct eap_fast_tlv_parse *tlv,
109 int tlv_type, u8 *pos, size_t len);
115 #endif /* EAP_FAST_H */