2 * hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions
3 * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 /* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */
13 #define RSNA_MAX_EAPOL_RETRIES 4
17 struct wpa_stsl_negotiation {
18 struct wpa_stsl_negotiation *next;
19 u8 initiator[ETH_ALEN];
24 struct wpa_state_machine {
25 struct wpa_authenticator *wpa_auth;
26 struct wpa_group *group;
31 WPA_PTK_INITIALIZE, WPA_PTK_DISCONNECT, WPA_PTK_DISCONNECTED,
32 WPA_PTK_AUTHENTICATION, WPA_PTK_AUTHENTICATION2,
33 WPA_PTK_INITPMK, WPA_PTK_INITPSK, WPA_PTK_PTKSTART,
34 WPA_PTK_PTKCALCNEGOTIATING, WPA_PTK_PTKCALCNEGOTIATING2,
35 WPA_PTK_PTKINITNEGOTIATING, WPA_PTK_PTKINITDONE
39 WPA_PTK_GROUP_IDLE = 0,
40 WPA_PTK_GROUP_REKEYNEGOTIATING,
41 WPA_PTK_GROUP_REKEYESTABLISHED,
42 WPA_PTK_GROUP_KEYERROR
43 } wpa_ptk_group_state;
46 Boolean DeauthenticationRequest;
47 Boolean AuthenticationRequest;
48 Boolean ReAuthenticationRequest;
53 Boolean EAPOLKeyReceived;
54 Boolean EAPOLKeyPairwise;
55 Boolean EAPOLKeyRequest;
57 Boolean GUpdateStationKeys;
58 u8 ANonce[WPA_NONCE_LEN];
59 u8 SNonce[WPA_NONCE_LEN];
66 struct wpa_key_replay_counter {
67 u8 counter[WPA_REPLAY_COUNTER_LEN];
69 } key_replay[RSNA_MAX_EAPOL_RETRIES],
70 prev_key_replay[RSNA_MAX_EAPOL_RETRIES];
71 Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */
72 Boolean PTKRequest; /* not in IEEE 802.11i state machine */
74 Boolean PtkGroupInit; /* init request for PTK Group state machine */
76 u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */
77 size_t last_rx_eapol_key_len;
79 unsigned int changed:1;
80 unsigned int in_step_loop:1;
81 unsigned int pending_deinit:1;
82 unsigned int started:1;
83 unsigned int mgmt_frame_prot:1;
84 unsigned int rx_eapol_key_secure:1;
85 unsigned int update_snonce:1;
86 #ifdef CONFIG_IEEE80211R
87 unsigned int ft_completed:1;
88 unsigned int pmk_r1_name_valid:1;
89 #endif /* CONFIG_IEEE80211R */
91 u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN];
92 int req_replay_counter_used;
98 WPA_VERSION_NO_WPA = 0 /* WPA not used */,
99 WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */,
100 WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */
102 int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
103 int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */
104 struct rsn_pmksa_cache_entry *pmksa;
106 u32 dot11RSNAStatsTKIPLocalMICFailures;
107 u32 dot11RSNAStatsTKIPRemoteMICFailures;
109 #ifdef CONFIG_IEEE80211R
110 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
112 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth
114 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */
116 u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key
119 #endif /* CONFIG_IEEE80211R */
121 int pending_1_of_4_timeout;
125 /* per group key state machine data */
127 struct wpa_group *next;
131 int GKeyDoneStations;
135 Boolean GTKAuthenticator;
136 u8 Counter[WPA_NONCE_LEN];
139 WPA_GROUP_GTK_INIT = 0,
140 WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE
144 u8 GTK[2][WPA_GTK_MAX_LEN];
145 u8 GNonce[WPA_NONCE_LEN];
147 Boolean first_sta_seen;
148 Boolean reject_4way_hs_for_entropy;
149 #ifdef CONFIG_IEEE80211W
150 u8 IGTK[2][WPA_IGTK_LEN];
151 int GN_igtk, GM_igtk;
152 #endif /* CONFIG_IEEE80211W */
156 struct wpa_ft_pmk_cache;
158 /* per authenticator data */
159 struct wpa_authenticator {
160 struct wpa_group *group;
162 unsigned int dot11RSNAStatsTKIPRemoteMICFailures;
163 u32 dot11RSNAAuthenticationSuiteSelected;
164 u32 dot11RSNAPairwiseCipherSelected;
165 u32 dot11RSNAGroupCipherSelected;
166 u8 dot11RSNAPMKIDUsed[PMKID_LEN];
167 u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */
168 u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */
169 u32 dot11RSNAGroupCipherRequested; /* FIX: update */
170 unsigned int dot11RSNATKIPCounterMeasuresInvoked;
171 unsigned int dot11RSNA4WayHandshakeFailures;
173 struct wpa_stsl_negotiation *stsl_negotiations;
175 struct wpa_auth_config conf;
176 struct wpa_auth_callbacks cb;
183 struct rsn_pmksa_cache *pmksa;
184 struct wpa_ft_pmk_cache *ft_pmk_cache;
188 int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len,
190 void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr,
191 logger_level level, const char *txt);
192 void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr,
193 logger_level level, const char *fmt, ...);
194 void __wpa_send_eapol(struct wpa_authenticator *wpa_auth,
195 struct wpa_state_machine *sm, int key_info,
196 const u8 *key_rsc, const u8 *nonce,
197 const u8 *kde, size_t kde_len,
198 int keyidx, int encr, int force_version);
199 int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth,
200 int (*cb)(struct wpa_state_machine *sm, void *ctx),
202 int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth,
203 int (*cb)(struct wpa_authenticator *a, void *ctx),
206 #ifdef CONFIG_PEERKEY
207 int wpa_stsl_remove(struct wpa_authenticator *wpa_auth,
208 struct wpa_stsl_negotiation *neg);
209 void wpa_smk_error(struct wpa_authenticator *wpa_auth,
210 struct wpa_state_machine *sm, struct wpa_eapol_key *key);
211 void wpa_smk_m1(struct wpa_authenticator *wpa_auth,
212 struct wpa_state_machine *sm, struct wpa_eapol_key *key);
213 void wpa_smk_m3(struct wpa_authenticator *wpa_auth,
214 struct wpa_state_machine *sm, struct wpa_eapol_key *key);
215 #endif /* CONFIG_PEERKEY */
217 #ifdef CONFIG_IEEE80211R
218 int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len);
219 int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id,
221 const u8 *anonce, const u8 *snonce,
222 u8 *buf, size_t len, const u8 *subelem,
224 int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
225 struct wpa_ptk *ptk, size_t ptk_len);
226 struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void);
227 void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache);
228 void wpa_ft_install_ptk(struct wpa_state_machine *sm);
229 #endif /* CONFIG_IEEE80211R */
231 #endif /* WPA_AUTH_I_H */