2 * hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions
3 * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
18 /* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */
19 #define RSNA_MAX_EAPOL_RETRIES 4
23 struct wpa_stsl_negotiation {
24 struct wpa_stsl_negotiation *next;
25 u8 initiator[ETH_ALEN];
30 struct wpa_state_machine {
31 struct wpa_authenticator *wpa_auth;
32 struct wpa_group *group;
37 WPA_PTK_INITIALIZE, WPA_PTK_DISCONNECT, WPA_PTK_DISCONNECTED,
38 WPA_PTK_AUTHENTICATION, WPA_PTK_AUTHENTICATION2,
39 WPA_PTK_INITPMK, WPA_PTK_INITPSK, WPA_PTK_PTKSTART,
40 WPA_PTK_PTKCALCNEGOTIATING, WPA_PTK_PTKCALCNEGOTIATING2,
41 WPA_PTK_PTKINITNEGOTIATING, WPA_PTK_PTKINITDONE
45 WPA_PTK_GROUP_IDLE = 0,
46 WPA_PTK_GROUP_REKEYNEGOTIATING,
47 WPA_PTK_GROUP_REKEYESTABLISHED,
48 WPA_PTK_GROUP_KEYERROR
49 } wpa_ptk_group_state;
52 Boolean DeauthenticationRequest;
53 Boolean AuthenticationRequest;
54 Boolean ReAuthenticationRequest;
59 Boolean EAPOLKeyReceived;
60 Boolean EAPOLKeyPairwise;
61 Boolean EAPOLKeyRequest;
63 Boolean GUpdateStationKeys;
64 u8 ANonce[WPA_NONCE_LEN];
65 u8 SNonce[WPA_NONCE_LEN];
73 u8 counter[WPA_REPLAY_COUNTER_LEN];
75 } key_replay[RSNA_MAX_EAPOL_RETRIES];
76 Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */
77 Boolean PTKRequest; /* not in IEEE 802.11i state machine */
79 Boolean PtkGroupInit; /* init request for PTK Group state machine */
81 u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */
82 size_t last_rx_eapol_key_len;
84 unsigned int changed:1;
85 unsigned int in_step_loop:1;
86 unsigned int pending_deinit:1;
87 unsigned int started:1;
88 unsigned int mgmt_frame_prot:1;
89 #ifdef CONFIG_IEEE80211R
90 unsigned int ft_completed:1;
91 unsigned int pmk_r1_name_valid:1;
92 #endif /* CONFIG_IEEE80211R */
94 u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN];
95 int req_replay_counter_used;
101 WPA_VERSION_NO_WPA = 0 /* WPA not used */,
102 WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */,
103 WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */
105 int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
106 int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */
107 struct rsn_pmksa_cache_entry *pmksa;
109 u32 dot11RSNAStatsTKIPLocalMICFailures;
110 u32 dot11RSNAStatsTKIPRemoteMICFailures;
112 #ifdef CONFIG_IEEE80211R
113 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
115 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth
117 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */
119 u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key
122 #endif /* CONFIG_IEEE80211R */
126 /* per group key state machine data */
128 struct wpa_group *next;
132 int GKeyDoneStations;
136 Boolean GTKAuthenticator;
137 u8 Counter[WPA_NONCE_LEN];
140 WPA_GROUP_GTK_INIT = 0,
141 WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE
145 u8 GTK[2][WPA_GTK_MAX_LEN];
146 u8 GNonce[WPA_NONCE_LEN];
148 #ifdef CONFIG_IEEE80211W
149 u8 IGTK[2][WPA_IGTK_LEN];
150 int GN_igtk, GM_igtk;
151 #endif /* CONFIG_IEEE80211W */
155 struct wpa_ft_pmk_cache;
157 /* per authenticator data */
158 struct wpa_authenticator {
159 struct wpa_group *group;
161 unsigned int dot11RSNAStatsTKIPRemoteMICFailures;
162 u32 dot11RSNAAuthenticationSuiteSelected;
163 u32 dot11RSNAPairwiseCipherSelected;
164 u32 dot11RSNAGroupCipherSelected;
165 u8 dot11RSNAPMKIDUsed[PMKID_LEN];
166 u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */
167 u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */
168 u32 dot11RSNAGroupCipherRequested; /* FIX: update */
169 unsigned int dot11RSNATKIPCounterMeasuresInvoked;
170 unsigned int dot11RSNA4WayHandshakeFailures;
172 struct wpa_stsl_negotiation *stsl_negotiations;
174 struct wpa_auth_config conf;
175 struct wpa_auth_callbacks cb;
182 struct rsn_pmksa_cache *pmksa;
183 struct wpa_ft_pmk_cache *ft_pmk_cache;
187 int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len,
189 void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr,
190 logger_level level, const char *txt);
191 void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr,
192 logger_level level, const char *fmt, ...);
193 void __wpa_send_eapol(struct wpa_authenticator *wpa_auth,
194 struct wpa_state_machine *sm, int key_info,
195 const u8 *key_rsc, const u8 *nonce,
196 const u8 *kde, size_t kde_len,
197 int keyidx, int encr, int force_version);
198 int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth,
199 int (*cb)(struct wpa_state_machine *sm, void *ctx),
201 int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth,
202 int (*cb)(struct wpa_authenticator *a, void *ctx),
205 #ifdef CONFIG_PEERKEY
206 int wpa_stsl_remove(struct wpa_authenticator *wpa_auth,
207 struct wpa_stsl_negotiation *neg);
208 void wpa_smk_error(struct wpa_authenticator *wpa_auth,
209 struct wpa_state_machine *sm, struct wpa_eapol_key *key);
210 void wpa_smk_m1(struct wpa_authenticator *wpa_auth,
211 struct wpa_state_machine *sm, struct wpa_eapol_key *key);
212 void wpa_smk_m3(struct wpa_authenticator *wpa_auth,
213 struct wpa_state_machine *sm, struct wpa_eapol_key *key);
214 #endif /* CONFIG_PEERKEY */
216 #ifdef CONFIG_IEEE80211R
217 int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len);
218 int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id,
220 const u8 *anonce, const u8 *snonce,
221 u8 *buf, size_t len, const u8 *subelem,
223 int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
224 struct wpa_ptk *ptk, size_t ptk_len);
225 struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void);
226 void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache);
227 void wpa_ft_install_ptk(struct wpa_state_machine *sm);
228 #endif /* CONFIG_IEEE80211R */
230 #endif /* WPA_AUTH_I_H */