1 /* 2 * PASN info for initiator and responder 3 * 4 * Copyright (C) 2019, Intel Corporation 5 * Copyright (c) 2022, Jouni Malinen <[email protected]> 6 * Copyright (C) 2022, Qualcomm Innovation Center, Inc. 7 * 8 * This software may be distributed under the terms of the BSD license. 9 * See README for more details. 10 */ 11 12 #ifndef PASN_COMMON_H 13 #define PASN_COMMON_H 14 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 19 enum pasn_fils_state { 20 PASN_FILS_STATE_NONE = 0, 21 PASN_FILS_STATE_PENDING_AS, 22 PASN_FILS_STATE_COMPLETE 23 }; 24 25 struct pasn_fils { 26 u8 state; 27 u8 nonce[FILS_NONCE_LEN]; 28 u8 anonce[FILS_NONCE_LEN]; 29 u8 session[FILS_SESSION_LEN]; 30 u8 erp_pmkid[PMKID_LEN]; 31 bool completed; 32 struct wpabuf *erp_resp; 33 }; 34 35 struct pasn_data { 36 /* External modules access below variables using setter and getter 37 * functions */ 38 int akmp; 39 int cipher; 40 u8 own_addr[ETH_ALEN]; 41 u8 peer_addr[ETH_ALEN]; 42 u8 bssid[ETH_ALEN]; 43 struct rsn_pmksa_cache *pmksa; 44 bool derive_kdk; 45 size_t kdk_len; 46 void *cb_ctx; 47 48 #ifdef CONFIG_SAE 49 struct sae_pt *pt; 50 #endif /* CONFIG_SAE */ 51 52 /* Responder */ 53 const char *password; 54 int wpa_key_mgmt; 55 int rsn_pairwise; 56 u16 rsnxe_capab; 57 u8 *rsnxe_ie; 58 bool custom_pmkid_valid; 59 u8 custom_pmkid[PMKID_LEN]; 60 61 /* 62 * Extra elements to add into Authentication frames. These can be used, 63 * e.g., for Wi-Fi Aware use cases. 64 */ 65 const u8 *extra_ies; 66 size_t extra_ies_len; 67 68 /* External modules do not access below variables */ 69 size_t kek_len; 70 u16 group; 71 bool secure_ltf; 72 int freq; 73 74 u8 trans_seq; 75 u8 status; 76 77 size_t pmk_len; 78 u8 pmk[PMK_LEN_MAX]; 79 bool using_pmksa; 80 81 u8 hash[SHA384_MAC_LEN]; 82 83 struct wpabuf *beacon_rsne_rsnxe; 84 struct wpa_ptk ptk; 85 struct crypto_ecdh *ecdh; 86 87 struct wpabuf *comeback; 88 u16 comeback_after; 89 90 #ifdef CONFIG_SAE 91 struct sae_data sae; 92 #endif /* CONFIG_SAE */ 93 94 #ifdef CONFIG_FILS 95 bool fils_eapol; 96 bool fils_wd_valid; 97 struct pasn_fils fils; 98 #endif /* CONFIG_FILS */ 99 100 #ifdef CONFIG_IEEE80211R 101 u8 pmk_r1[PMK_LEN_MAX]; 102 size_t pmk_r1_len; 103 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 104 #endif /* CONFIG_IEEE80211R */ 105 /* Note that this pointers to RSN PMKSA cache are actually defined 106 * differently for the PASN initiator (using RSN Supplicant 107 * implementation) and PASN responser (using RSN Authenticator 108 * implementation). Functions cannot be mixed between those cases. */ 109 struct rsn_pmksa_cache_entry *pmksa_entry; 110 struct eapol_sm *eapol; 111 int fast_reauth; 112 #ifdef CONFIG_TESTING_OPTIONS 113 int corrupt_mic; 114 #endif /* CONFIG_TESTING_OPTIONS */ 115 int network_id; 116 117 u8 wrapped_data_format; 118 struct wpabuf *secret; 119 120 /* Responder */ 121 bool noauth; /* Whether PASN without mutual authentication is enabled */ 122 int disable_pmksa_caching; 123 int *pasn_groups; 124 struct wpabuf *wrapped_data; 125 int use_anti_clogging; 126 const u8 *rsn_ie; 127 size_t rsn_ie_len; 128 129 u8 *comeback_key; 130 struct os_reltime last_comeback_key_update; 131 u16 comeback_idx; 132 u16 *comeback_pending_idx; 133 134 /** 135 * send_mgmt - Function handler to transmit a Management frame 136 * @ctx: Callback context from cb_ctx 137 * @frame_buf : Frame to transmit 138 * @frame_len: Length of frame to transmit 139 * @freq: Frequency in MHz for the channel on which to transmit 140 * @wait_dur: How many milliseconds to wait for a response frame 141 * Returns: 0 on success, -1 on failure 142 */ 143 int (*send_mgmt)(void *ctx, const u8 *data, size_t data_len, int noack, 144 unsigned int freq, unsigned int wait); 145 /** 146 * validate_custom_pmkid - Handler to validate vendor specific PMKID 147 * @ctx: Callback context from cb_ctx 148 * @addr : MAC address of the peer 149 * @pmkid: Custom PMKID 150 * Returns: 0 on success (valid PMKID), -1 on failure 151 */ 152 int (*validate_custom_pmkid)(void *ctx, const u8 *addr, 153 const u8 *pmkid); 154 }; 155 156 /* Initiator */ 157 void wpa_pasn_reset(struct pasn_data *pasn); 158 int wpas_pasn_start(struct pasn_data *pasn, const u8 *own_addr, 159 const u8 *peer_addr, const u8 *bssid, 160 int akmp, int cipher, u16 group, 161 int freq, const u8 *beacon_rsne, u8 beacon_rsne_len, 162 const u8 *beacon_rsnxe, u8 beacon_rsnxe_len, 163 const struct wpabuf *comeback); 164 int wpa_pasn_verify(struct pasn_data *pasn, const u8 *own_addr, 165 const u8 *peer_addr, const u8 *bssid, 166 int akmp, int cipher, u16 group, 167 int freq, const u8 *beacon_rsne, u8 beacon_rsne_len, 168 const u8 *beacon_rsnxe, u8 beacon_rsnxe_len, 169 const struct wpabuf *comeback); 170 int wpa_pasn_auth_rx(struct pasn_data *pasn, const u8 *data, size_t len, 171 struct wpa_pasn_params_data *pasn_params); 172 int wpa_pasn_auth_tx_status(struct pasn_data *pasn, 173 const u8 *data, size_t data_len, u8 acked); 174 175 /* Responder */ 176 int handle_auth_pasn_1(struct pasn_data *pasn, 177 const u8 *own_addr, const u8 *peer_addr, 178 const struct ieee80211_mgmt *mgmt, size_t len, 179 bool reject); 180 int handle_auth_pasn_3(struct pasn_data *pasn, const u8 *own_addr, 181 const u8 *peer_addr, 182 const struct ieee80211_mgmt *mgmt, size_t len); 183 int handle_auth_pasn_resp(struct pasn_data *pasn, const u8 *own_addr, 184 const u8 *peer_addr, 185 struct rsn_pmksa_cache_entry *pmksa, u16 status); 186 187 struct pasn_data * pasn_data_init(void); 188 void pasn_data_deinit(struct pasn_data *pasn); 189 void pasn_register_callbacks(struct pasn_data *pasn, void *cb_ctx, 190 int (*send_mgmt)(void *ctx, const u8 *data, 191 size_t data_len, int noack, 192 unsigned int freq, 193 unsigned int wait), 194 int (*validate_custom_pmkid)(void *ctx, 195 const u8 *addr, 196 const u8 *pmkid)); 197 void pasn_enable_kdk_derivation(struct pasn_data *pasn); 198 void pasn_disable_kdk_derivation(struct pasn_data *pasn); 199 200 void pasn_set_akmp(struct pasn_data *pasn, int akmp); 201 void pasn_set_cipher(struct pasn_data *pasn, int cipher); 202 void pasn_set_own_addr(struct pasn_data *pasn, const u8 *addr); 203 void pasn_set_peer_addr(struct pasn_data *pasn, const u8 *addr); 204 void pasn_set_bssid(struct pasn_data *pasn, const u8 *addr); 205 void pasn_set_initiator_pmksa(struct pasn_data *pasn, 206 struct rsn_pmksa_cache *pmksa); 207 void pasn_set_responder_pmksa(struct pasn_data *pasn, 208 struct rsn_pmksa_cache *pmksa); 209 int pasn_set_pt(struct pasn_data *pasn, struct sae_pt *pt); 210 struct rsn_pmksa_cache * pasn_initiator_pmksa_cache_init(void); 211 void pasn_initiator_pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa); 212 int pasn_initiator_pmksa_cache_add(struct rsn_pmksa_cache *pmksa, 213 const u8 *own_addr, const u8 *bssid, u8 *pmk, 214 size_t pmk_len, u8 *pmkid); 215 int pasn_initiator_pmksa_cache_get(struct rsn_pmksa_cache *pmksa, 216 const u8 *bssid, u8 *pmkid, u8 *pmk, 217 size_t *pmk_len); 218 void pasn_initiator_pmksa_cache_remove(struct rsn_pmksa_cache *pmksa, 219 const u8 *bssid); 220 void pasn_initiator_pmksa_cache_flush(struct rsn_pmksa_cache *pmksa); 221 222 /* Responder */ 223 void pasn_set_noauth(struct pasn_data *pasn, bool noauth); 224 void pasn_set_password(struct pasn_data *pasn, const char *password); 225 void pasn_set_wpa_key_mgmt(struct pasn_data *pasn, int key_mgmt); 226 void pasn_set_rsn_pairwise(struct pasn_data *pasn, int rsn_pairwise); 227 void pasn_set_rsnxe_caps(struct pasn_data *pasn, u16 rsnxe_capab); 228 void pasn_set_rsnxe_ie(struct pasn_data *pasn, const u8 *rsnxe_ie); 229 void pasn_set_custom_pmkid(struct pasn_data *pasn, const u8 *pmkid); 230 int pasn_set_extra_ies(struct pasn_data *pasn, const u8 *extra_ies, 231 size_t extra_ies_len); 232 struct rsn_pmksa_cache * pasn_responder_pmksa_cache_init(void); 233 void pasn_responder_pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa); 234 int pasn_responder_pmksa_cache_add(struct rsn_pmksa_cache *pmksa, 235 const u8 *own_addr, const u8 *bssid, u8 *pmk, 236 size_t pmk_len, u8 *pmkid); 237 int pasn_responder_pmksa_cache_get(struct rsn_pmksa_cache *pmksa, 238 const u8 *bssid, u8 *pmkid, u8 *pmk, 239 size_t *pmk_len); 240 void pasn_responder_pmksa_cache_remove(struct rsn_pmksa_cache *pmksa, 241 const u8 *bssid); 242 void pasn_responder_pmksa_cache_flush(struct rsn_pmksa_cache *pmksa); 243 244 int pasn_get_akmp(struct pasn_data *pasn); 245 int pasn_get_cipher(struct pasn_data *pasn); 246 size_t pasn_get_pmk_len(struct pasn_data *pasn); 247 u8 * pasn_get_pmk(struct pasn_data *pasn); 248 struct wpa_ptk * pasn_get_ptk(struct pasn_data *pasn); 249 250 #ifdef __cplusplus 251 } 252 #endif 253 #endif /* PASN_COMMON_H */ 254