2 * EAP server/peer: EAP-EKE shared routines
3 * Copyright (c) 2011-2013, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #ifndef EAP_EKE_COMMON_H
10 #define EAP_EKE_COMMON_H
14 #define EAP_EKE_COMMIT 2
15 #define EAP_EKE_CONFIRM 3
16 #define EAP_EKE_FAILURE 4
18 /* Diffie-Hellman Group Registry */
19 #define EAP_EKE_DHGROUP_EKE_2 1
20 #define EAP_EKE_DHGROUP_EKE_5 2
21 #define EAP_EKE_DHGROUP_EKE_14 3 /* mandatory to implement */
22 #define EAP_EKE_DHGROUP_EKE_15 4
23 #define EAP_EKE_DHGROUP_EKE_16 5
25 /* Encryption Algorithm Registry */
26 #define EAP_EKE_ENCR_AES128_CBC 1 /* mandatory to implement */
28 /* Pseudo Random Function Registry */
29 #define EAP_EKE_PRF_HMAC_SHA1 1 /* mandatory to implement */
30 #define EAP_EKE_PRF_HMAC_SHA2_256 2
32 /* Keyed Message Digest (MAC) Registry */
33 #define EAP_EKE_MAC_HMAC_SHA1 1 /* mandatory to implement */
34 #define EAP_EKE_MAC_HMAC_SHA2_256 2
36 /* Identity Type Registry */
37 #define EAP_EKE_ID_OPAQUE 1
38 #define EAP_EKE_ID_NAI 2
39 #define EAP_EKE_ID_IPv4 3
40 #define EAP_EKE_ID_IPv6 4
41 #define EAP_EKE_ID_FQDN 5
42 #define EAP_EKE_ID_DN 6
45 #define EAP_EKE_FAIL_NO_ERROR 1
46 #define EAP_EKE_FAIL_PROTO_ERROR 2
47 #define EAP_EKE_FAIL_PASSWD_NOT_FOUND 3
48 #define EAP_EKE_FAIL_AUTHENTICATION_FAIL 4
49 #define EAP_EKE_FAIL_AUTHORIZATION_FAIL 5
50 #define EAP_EKE_FAIL_NO_PROPOSAL_CHOSEN 6
51 #define EAP_EKE_FAIL_PRIVATE_INTERNAL_ERROR 0xffffffff
53 #define EAP_EKE_MAX_DH_LEN 512
54 #define EAP_EKE_MAX_HASH_LEN 32
55 #define EAP_EKE_MAX_KEY_LEN 16
56 #define EAP_EKE_MAX_KE_LEN 16
57 #define EAP_EKE_MAX_KI_LEN 32
58 #define EAP_EKE_MAX_KA_LEN 32
59 #define EAP_EKE_MAX_NONCE_LEN 16
61 struct eap_eke_session {
62 /* Selected proposal */
68 u8 shared_secret[EAP_EKE_MAX_HASH_LEN];
69 u8 ke[EAP_EKE_MAX_KE_LEN];
70 u8 ki[EAP_EKE_MAX_KI_LEN];
71 u8 ka[EAP_EKE_MAX_KA_LEN];
81 int eap_eke_session_init(struct eap_eke_session *sess, u8 dhgroup, u8 encr,
83 void eap_eke_session_clean(struct eap_eke_session *sess);
84 int eap_eke_dh_init(u8 group, u8 *ret_priv, u8 *ret_pub);
85 int eap_eke_derive_key(struct eap_eke_session *sess,
86 const u8 *password, size_t password_len,
87 const u8 *id_s, size_t id_s_len, const u8 *id_p,
88 size_t id_p_len, u8 *key);
89 int eap_eke_dhcomp(struct eap_eke_session *sess, const u8 *key, const u8 *dhpub,
91 int eap_eke_shared_secret(struct eap_eke_session *sess, const u8 *key,
92 const u8 *dhpriv, const u8 *peer_dhcomp);
93 int eap_eke_derive_ke_ki(struct eap_eke_session *sess,
94 const u8 *id_s, size_t id_s_len,
95 const u8 *id_p, size_t id_p_len);
96 int eap_eke_derive_ka(struct eap_eke_session *sess,
97 const u8 *id_s, size_t id_s_len,
98 const u8 *id_p, size_t id_p_len,
99 const u8 *nonce_p, const u8 *nonce_s);
100 int eap_eke_derive_msk(struct eap_eke_session *sess,
101 const u8 *id_s, size_t id_s_len,
102 const u8 *id_p, size_t id_p_len,
103 const u8 *nonce_p, const u8 *nonce_s,
105 int eap_eke_prot(struct eap_eke_session *sess,
106 const u8 *data, size_t data_len,
107 u8 *prot, size_t *prot_len);
108 int eap_eke_decrypt_prot(struct eap_eke_session *sess,
109 const u8 *prot, size_t prot_len,
110 u8 *data, size_t *data_len);
111 int eap_eke_auth(struct eap_eke_session *sess, const char *label,
112 const struct wpabuf *msgs, u8 *auth);
114 #endif /* EAP_EKE_COMMON_H */