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00001 /* 00002 * WPA definitions shared between hostapd and wpa_supplicant 00003 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi> 00004 * 00005 * This program is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License version 2 as 00007 * published by the Free Software Foundation. 00008 * 00009 * Alternatively, this software may be distributed under the terms of BSD 00010 * license. 00011 * 00012 * See README and COPYING for more details. 00013 */ 00014 00015 #ifndef WPA_COMMON_H 00016 #define WPA_COMMON_H 00017 00018 #define WPA_MAX_SSID_LEN 32 00019 00020 /* IEEE 802.11i */ 00021 #define PMKID_LEN 16 00022 #define PMK_LEN 32 00023 #define WPA_REPLAY_COUNTER_LEN 8 00024 #define WPA_NONCE_LEN 32 00025 #define WPA_KEY_RSC_LEN 8 00026 #define WPA_GMK_LEN 32 00027 #define WPA_GTK_MAX_LEN 32 00028 00029 #define WPA_SELECTOR_LEN 4 00030 #define WPA_VERSION 1 00031 #define RSN_SELECTOR_LEN 4 00032 #define RSN_VERSION 1 00033 00034 #define RSN_SELECTOR(a, b, c, d) \ 00035 ((((u32) (a)) << 24) | (((u32) (b)) << 16) | (((u32) (c)) << 8) | \ 00036 (u32) (d)) 00037 00038 #define WPA_AUTH_KEY_MGMT_NONE RSN_SELECTOR(0x00, 0x50, 0xf2, 0) 00039 #define WPA_AUTH_KEY_MGMT_UNSPEC_802_1X RSN_SELECTOR(0x00, 0x50, 0xf2, 1) 00040 #define WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X RSN_SELECTOR(0x00, 0x50, 0xf2, 2) 00041 #define WPA_CIPHER_SUITE_NONE RSN_SELECTOR(0x00, 0x50, 0xf2, 0) 00042 #define WPA_CIPHER_SUITE_WEP40 RSN_SELECTOR(0x00, 0x50, 0xf2, 1) 00043 #define WPA_CIPHER_SUITE_TKIP RSN_SELECTOR(0x00, 0x50, 0xf2, 2) 00044 #if 0 00045 #define WPA_CIPHER_SUITE_WRAP RSN_SELECTOR(0x00, 0x50, 0xf2, 3) 00046 #endif 00047 #define WPA_CIPHER_SUITE_CCMP RSN_SELECTOR(0x00, 0x50, 0xf2, 4) 00048 #define WPA_CIPHER_SUITE_WEP104 RSN_SELECTOR(0x00, 0x50, 0xf2, 5) 00049 00050 00051 #define RSN_AUTH_KEY_MGMT_UNSPEC_802_1X RSN_SELECTOR(0x00, 0x0f, 0xac, 1) 00052 #define RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X RSN_SELECTOR(0x00, 0x0f, 0xac, 2) 00053 #ifdef CONFIG_IEEE80211R 00054 #define RSN_AUTH_KEY_MGMT_FT_802_1X RSN_SELECTOR(0x00, 0x0f, 0xac, 3) 00055 #define RSN_AUTH_KEY_MGMT_FT_PSK RSN_SELECTOR(0x00, 0x0f, 0xac, 4) 00056 #endif /* CONFIG_IEEE80211R */ 00057 #define RSN_AUTH_KEY_MGMT_802_1X_SHA256 RSN_SELECTOR(0x00, 0x0f, 0xac, 5) 00058 #define RSN_AUTH_KEY_MGMT_PSK_SHA256 RSN_SELECTOR(0x00, 0x0f, 0xac, 6) 00059 00060 #define RSN_CIPHER_SUITE_NONE RSN_SELECTOR(0x00, 0x0f, 0xac, 0) 00061 #define RSN_CIPHER_SUITE_WEP40 RSN_SELECTOR(0x00, 0x0f, 0xac, 1) 00062 #define RSN_CIPHER_SUITE_TKIP RSN_SELECTOR(0x00, 0x0f, 0xac, 2) 00063 #if 0 00064 #define RSN_CIPHER_SUITE_WRAP RSN_SELECTOR(0x00, 0x0f, 0xac, 3) 00065 #endif 00066 #define RSN_CIPHER_SUITE_CCMP RSN_SELECTOR(0x00, 0x0f, 0xac, 4) 00067 #define RSN_CIPHER_SUITE_WEP104 RSN_SELECTOR(0x00, 0x0f, 0xac, 5) 00068 #ifdef CONFIG_IEEE80211W 00069 #define RSN_CIPHER_SUITE_AES_128_CMAC RSN_SELECTOR(0x00, 0x0f, 0xac, 6) 00070 #endif /* CONFIG_IEEE80211W */ 00071 00072 /* EAPOL-Key Key Data Encapsulation 00073 * GroupKey and PeerKey require encryption, otherwise, encryption is optional. 00074 */ 00075 #define RSN_KEY_DATA_GROUPKEY RSN_SELECTOR(0x00, 0x0f, 0xac, 1) 00076 #if 0 00077 #define RSN_KEY_DATA_STAKEY RSN_SELECTOR(0x00, 0x0f, 0xac, 2) 00078 #endif 00079 #define RSN_KEY_DATA_MAC_ADDR RSN_SELECTOR(0x00, 0x0f, 0xac, 3) 00080 #define RSN_KEY_DATA_PMKID RSN_SELECTOR(0x00, 0x0f, 0xac, 4) 00081 #ifdef CONFIG_PEERKEY 00082 #define RSN_KEY_DATA_SMK RSN_SELECTOR(0x00, 0x0f, 0xac, 5) 00083 #define RSN_KEY_DATA_NONCE RSN_SELECTOR(0x00, 0x0f, 0xac, 6) 00084 #define RSN_KEY_DATA_LIFETIME RSN_SELECTOR(0x00, 0x0f, 0xac, 7) 00085 #define RSN_KEY_DATA_ERROR RSN_SELECTOR(0x00, 0x0f, 0xac, 8) 00086 #endif /* CONFIG_PEERKEY */ 00087 #ifdef CONFIG_IEEE80211W 00088 #define RSN_KEY_DATA_IGTK RSN_SELECTOR(0x00, 0x0f, 0xac, 9) 00089 #endif /* CONFIG_IEEE80211W */ 00090 00091 #define WPA_OUI_TYPE RSN_SELECTOR(0x00, 0x50, 0xf2, 1) 00092 00093 #define RSN_SELECTOR_PUT(a, val) WPA_PUT_BE32((u8 *) (a), (val)) 00094 #define RSN_SELECTOR_GET(a) WPA_GET_BE32((const u8 *) (a)) 00095 00096 #define RSN_NUM_REPLAY_COUNTERS_1 0 00097 #define RSN_NUM_REPLAY_COUNTERS_2 1 00098 #define RSN_NUM_REPLAY_COUNTERS_4 2 00099 #define RSN_NUM_REPLAY_COUNTERS_16 3 00100 00101 00102 #ifdef _MSC_VER 00103 #pragma pack(push, 1) 00104 #endif /* _MSC_VER */ 00105 00106 #ifdef CONFIG_IEEE80211W 00107 #define WPA_IGTK_LEN 16 00108 #endif /* CONFIG_IEEE80211W */ 00109 00110 00111 /* IEEE 802.11, 7.3.2.25.3 RSN Capabilities */ 00112 #define WPA_CAPABILITY_PREAUTH BIT(0) 00113 #define WPA_CAPABILITY_NO_PAIRWISE BIT(1) 00114 /* B2-B3: PTKSA Replay Counter */ 00115 /* B4-B5: GTKSA Replay Counter */ 00116 #define WPA_CAPABILITY_MFPR BIT(6) 00117 #define WPA_CAPABILITY_MFPC BIT(7) 00118 #define WPA_CAPABILITY_PEERKEY_ENABLED BIT(9) 00119 00120 00121 /* IEEE 802.11r */ 00122 #define MOBILITY_DOMAIN_ID_LEN 2 00123 #define FT_R0KH_ID_MAX_LEN 48 00124 #define FT_R1KH_ID_LEN 6 00125 #define WPA_PMK_NAME_LEN 16 00126 00127 00128 /* IEEE 802.11, 8.5.2 EAPOL-Key frames */ 00129 #define WPA_KEY_INFO_TYPE_MASK ((u16) (BIT(0) | BIT(1) | BIT(2))) 00130 #define WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 BIT(0) 00131 #define WPA_KEY_INFO_TYPE_HMAC_SHA1_AES BIT(1) 00132 #define WPA_KEY_INFO_TYPE_AES_128_CMAC 3 00133 #define WPA_KEY_INFO_KEY_TYPE BIT(3) /* 1 = Pairwise, 0 = Group key */ 00134 /* bit4..5 is used in WPA, but is reserved in IEEE 802.11i/RSN */ 00135 #define WPA_KEY_INFO_KEY_INDEX_MASK (BIT(4) | BIT(5)) 00136 #define WPA_KEY_INFO_KEY_INDEX_SHIFT 4 00137 #define WPA_KEY_INFO_INSTALL BIT(6) /* pairwise */ 00138 #define WPA_KEY_INFO_TXRX BIT(6) /* group */ 00139 #define WPA_KEY_INFO_ACK BIT(7) 00140 #define WPA_KEY_INFO_MIC BIT(8) 00141 #define WPA_KEY_INFO_SECURE BIT(9) 00142 #define WPA_KEY_INFO_ERROR BIT(10) 00143 #define WPA_KEY_INFO_REQUEST BIT(11) 00144 #define WPA_KEY_INFO_ENCR_KEY_DATA BIT(12) /* IEEE 802.11i/RSN only */ 00145 #define WPA_KEY_INFO_SMK_MESSAGE BIT(13) 00146 00147 00148 struct wpa_eapol_key { 00149 u8 type; 00150 /* Note: key_info, key_length, and key_data_length are unaligned */ 00151 u8 key_info[2]; /* big endian */ 00152 u8 key_length[2]; /* big endian */ 00153 u8 replay_counter[WPA_REPLAY_COUNTER_LEN]; 00154 u8 key_nonce[WPA_NONCE_LEN]; 00155 u8 key_iv[16]; 00156 u8 key_rsc[WPA_KEY_RSC_LEN]; 00157 u8 key_id[8]; /* Reserved in IEEE 802.11i/RSN */ 00158 u8 key_mic[16]; 00159 u8 key_data_length[2]; /* big endian */ 00160 /* followed by key_data_length bytes of key_data */ 00161 } STRUCT_PACKED; 00162 00167 struct wpa_ptk { 00168 u8 kck[16]; /* EAPOL-Key Key Confirmation Key (KCK) */ 00169 u8 kek[16]; /* EAPOL-Key Key Encryption Key (KEK) */ 00170 u8 tk1[16]; /* Temporal Key 1 (TK1) */ 00171 union { 00172 u8 tk2[16]; /* Temporal Key 2 (TK2) */ 00173 struct { 00174 u8 tx_mic_key[8]; 00175 u8 rx_mic_key[8]; 00176 } auth; 00177 } u; 00178 } STRUCT_PACKED; 00179 00180 00181 /* WPA IE version 1 00182 * 00-50-f2:1 (OUI:OUI type) 00183 * 0x01 0x00 (version; little endian) 00184 * (all following fields are optional:) 00185 * Group Suite Selector (4 octets) (default: TKIP) 00186 * Pairwise Suite Count (2 octets, little endian) (default: 1) 00187 * Pairwise Suite List (4 * n octets) (default: TKIP) 00188 * Authenticated Key Management Suite Count (2 octets, little endian) 00189 * (default: 1) 00190 * Authenticated Key Management Suite List (4 * n octets) 00191 * (default: unspec 802.1X) 00192 * WPA Capabilities (2 octets, little endian) (default: 0) 00193 */ 00194 00195 struct wpa_ie_hdr { 00196 u8 elem_id; 00197 u8 len; 00198 u8 oui[4]; /* 24-bit OUI followed by 8-bit OUI type */ 00199 u8 version[2]; /* little endian */ 00200 } STRUCT_PACKED; 00201 00202 00203 /* 1/4: PMKID 00204 * 2/4: RSN IE 00205 * 3/4: one or two RSN IEs + GTK IE (encrypted) 00206 * 4/4: empty 00207 * 1/2: GTK IE (encrypted) 00208 * 2/2: empty 00209 */ 00210 00211 /* RSN IE version 1 00212 * 0x01 0x00 (version; little endian) 00213 * (all following fields are optional:) 00214 * Group Suite Selector (4 octets) (default: CCMP) 00215 * Pairwise Suite Count (2 octets, little endian) (default: 1) 00216 * Pairwise Suite List (4 * n octets) (default: CCMP) 00217 * Authenticated Key Management Suite Count (2 octets, little endian) 00218 * (default: 1) 00219 * Authenticated Key Management Suite List (4 * n octets) 00220 * (default: unspec 802.1X) 00221 * RSN Capabilities (2 octets, little endian) (default: 0) 00222 * PMKID Count (2 octets) (default: 0) 00223 * PMKID List (16 * n octets) 00224 * Management Group Cipher Suite (4 octets) (default: AES-128-CMAC) 00225 */ 00226 00227 struct rsn_ie_hdr { 00228 u8 elem_id; /* WLAN_EID_RSN */ 00229 u8 len; 00230 u8 version[2]; /* little endian */ 00231 } STRUCT_PACKED; 00232 00233 00234 #ifdef CONFIG_PEERKEY 00235 enum { 00236 STK_MUI_4WAY_STA_AP = 1, 00237 STK_MUI_4WAY_STAT_STA = 2, 00238 STK_MUI_GTK = 3, 00239 STK_MUI_SMK = 4 00240 }; 00241 00242 enum { 00243 STK_ERR_STA_NR = 1, 00244 STK_ERR_STA_NRSN = 2, 00245 STK_ERR_CPHR_NS = 3, 00246 STK_ERR_NO_STSL = 4 00247 }; 00248 #endif /* CONFIG_PEERKEY */ 00249 00250 struct rsn_error_kde { 00251 be16 mui; 00252 be16 error_type; 00253 } STRUCT_PACKED; 00254 00255 #ifdef CONFIG_IEEE80211W 00256 struct wpa_igtk_kde { 00257 u8 keyid[2]; 00258 u8 pn[6]; 00259 u8 igtk[WPA_IGTK_LEN]; 00260 } STRUCT_PACKED; 00261 #endif /* CONFIG_IEEE80211W */ 00262 00263 #ifdef CONFIG_IEEE80211R 00264 struct rsn_mdie { 00265 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 00266 u8 ft_capab; 00267 } STRUCT_PACKED; 00268 00269 #define RSN_FT_CAPAB_FT_OVER_DS BIT(0) 00270 #define RSN_FT_CAPAB_FT_RESOURCE_REQ_SUPP BIT(1) 00271 00272 struct rsn_ftie { 00273 u8 mic_control[2]; 00274 u8 mic[16]; 00275 u8 anonce[WPA_NONCE_LEN]; 00276 u8 snonce[WPA_NONCE_LEN]; 00277 /* followed by optional parameters */ 00278 } STRUCT_PACKED; 00279 00280 #define FTIE_SUBELEM_R1KH_ID 1 00281 #define FTIE_SUBELEM_GTK 2 00282 #define FTIE_SUBELEM_R0KH_ID 3 00283 #define FTIE_SUBELEM_IGTK 4 00284 00285 struct rsn_rdie { 00286 u8 id; 00287 u8 descr_count; 00288 le16 status_code; 00289 } STRUCT_PACKED; 00290 00291 #endif /* CONFIG_IEEE80211R */ 00292 00293 #ifdef _MSC_VER 00294 #pragma pack(pop) 00295 #endif /* _MSC_VER */ 00296 00297 00298 int wpa_eapol_key_mic(const u8 *key, int ver, const u8 *buf, size_t len, 00299 u8 *mic); 00300 void wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label, 00301 const u8 *addr1, const u8 *addr2, 00302 const u8 *nonce1, const u8 *nonce2, 00303 u8 *ptk, size_t ptk_len, int use_sha256); 00304 00305 #ifdef CONFIG_IEEE80211R 00306 int wpa_ft_mic(const u8 *kck, const u8 *sta_addr, const u8 *ap_addr, 00307 u8 transaction_seqnum, const u8 *mdie, size_t mdie_len, 00308 const u8 *ftie, size_t ftie_len, 00309 const u8 *rsnie, size_t rsnie_len, 00310 const u8 *ric, size_t ric_len, u8 *mic); 00311 void wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len, 00312 const u8 *ssid, size_t ssid_len, 00313 const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len, 00314 const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name); 00315 void wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id, 00316 const u8 *s1kh_id, u8 *pmk_r1_name); 00317 void wpa_derive_pmk_r1(const u8 *pmk_r0, const u8 *pmk_r0_name, 00318 const u8 *r1kh_id, const u8 *s1kh_id, 00319 u8 *pmk_r1, u8 *pmk_r1_name); 00320 void wpa_pmk_r1_to_ptk(const u8 *pmk_r1, const u8 *snonce, const u8 *anonce, 00321 const u8 *sta_addr, const u8 *bssid, 00322 const u8 *pmk_r1_name, 00323 u8 *ptk, size_t ptk_len, u8 *ptk_name); 00324 #endif /* CONFIG_IEEE80211R */ 00325 00326 struct wpa_ie_data { 00327 int proto; 00328 int pairwise_cipher; 00329 int group_cipher; 00330 int key_mgmt; 00331 int capabilities; 00332 size_t num_pmkid; 00333 const u8 *pmkid; 00334 int mgmt_group_cipher; 00335 }; 00336 00337 00338 int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len, 00339 struct wpa_ie_data *data); 00340 00341 void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa, 00342 u8 *pmkid, int use_sha256); 00343 00344 const char * wpa_cipher_txt(int cipher); 00345 const char * wpa_key_mgmt_txt(int key_mgmt, int proto); 00346 int wpa_compare_rsn_ie(int ft_initial_assoc, 00347 const u8 *ie1, size_t ie1len, 00348 const u8 *ie2, size_t ie2len); 00349 int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid); 00350 00351 #endif /* WPA_COMMON_H */