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#ifndef WPA_H
#define WPA_H
#define BIT(n) (1 << (n))
struct ieee802_1x_hdr {
u8 version;
u8 type;
u16 length;
/* followed by length octets of data */
} __attribute__ ((packed));
#define EAPOL_VERSION 2
enum { IEEE802_1X_TYPE_EAP_PACKET = 0,
IEEE802_1X_TYPE_EAPOL_START = 1,
IEEE802_1X_TYPE_EAPOL_LOGOFF = 2,
IEEE802_1X_TYPE_EAPOL_KEY = 3,
IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT = 4
};
enum { EAPOL_KEY_TYPE_RC4 = 1, EAPOL_KEY_TYPE_RSN = 2,
EAPOL_KEY_TYPE_WPA = 254 };
#define IEEE8021X_REPLAY_COUNTER_LEN 8
#define IEEE8021X_KEY_SIGN_LEN 16
#define IEEE8021X_KEY_IV_LEN 16
#define IEEE8021X_KEY_INDEX_FLAG 0x80
#define IEEE8021X_KEY_INDEX_MASK 0x03
struct ieee802_1x_eapol_key {
u8 type;
u16 key_length;
/* does not repeat within the life of the keying material used to
* encrypt the Key field; 64-bit NTP timestamp MAY be used here */
u8 replay_counter[IEEE8021X_REPLAY_COUNTER_LEN];
u8 key_iv[IEEE8021X_KEY_IV_LEN]; /* cryptographically random number */
u8 key_index; /* key flag in the most significant bit:
* 0 = broadcast (default key),
* 1 = unicast (key mapping key); key index is in the
* 7 least significant bits */
/* HMAC-MD5 message integrity check computed with MS-MPPE-Send-Key as
* the key */
u8 key_signature[IEEE8021X_KEY_SIGN_LEN];
/* followed by key: if packet body length = 44 + key length, then the
* key field (of key_length bytes) contains the key in encrypted form;
* if packet body length = 44, key field is absent and key_length
* represents the number of least significant octets from
* MS-MPPE-Send-Key attribute to be used as the keying material;
* RC4 key used in encryption = Key-IV + MS-MPPE-Recv-Key */
} __attribute__ ((packed));
#define WPA_NONCE_LEN 32
#define WPA_REPLAY_COUNTER_LEN 8
struct wpa_eapol_key {
u8 type;
u16 key_info;
u16 key_length;
u8 replay_counter[WPA_REPLAY_COUNTER_LEN];
u8 key_nonce[WPA_NONCE_LEN];
u8 key_iv[16];
u8 key_rsc[8];
u8 key_id[8]; /* Reserved in IEEE 802.11i/RSN */
u8 key_mic[16];
u16 key_data_length;
/* followed by key_data_length bytes of key_data */
} __attribute__ ((packed));
#define WPA_KEY_INFO_TYPE_MASK (BIT(0) | BIT(1) | BIT(2))
#define WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 BIT(0)
#define WPA_KEY_INFO_TYPE_HMAC_SHA1_AES BIT(1)
#define WPA_KEY_INFO_KEY_TYPE BIT(3) /* 1 = Pairwise, 0 = Group key */
/* bit4..5 is used in WPA, but is reserved in IEEE 802.11i/RSN */
#define WPA_KEY_INFO_KEY_INDEX_MASK (BIT(4) | BIT(5))
#define WPA_KEY_INFO_KEY_INDEX_SHIFT 4
#define WPA_KEY_INFO_INSTALL BIT(6) /* pairwise */
#define WPA_KEY_INFO_TXRX BIT(6) /* group */
#define WPA_KEY_INFO_ACK BIT(7)
#define WPA_KEY_INFO_MIC BIT(8)
#define WPA_KEY_INFO_SECURE BIT(9)
#define WPA_KEY_INFO_ERROR BIT(10)
#define WPA_KEY_INFO_REQUEST BIT(11)
#define WPA_KEY_INFO_ENCR_KEY_DATA BIT(12) /* IEEE 802.11i/RSN only */
#define WPA_CAPABILITY_PREAUTH BIT(0)
#define GENERIC_INFO_ELEM 0xdd
#define RSN_INFO_ELEM 0x30
enum {
REASON_UNSPECIFIED = 1,
REASON_DEAUTH_LEAVING = 3,
REASON_INVALID_IE = 13,
REASON_MICHAEL_MIC_FAILURE = 14,
REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
REASON_GROUP_KEY_UPDATE_TIMEOUT = 16,
REASON_IE_IN_4WAY_DIFFERS = 17,
REASON_GROUP_CIPHER_NOT_VALID = 18,
REASON_PAIRWISE_CIPHER_NOT_VALID = 19,
REASON_AKMP_NOT_VALID = 20,
REASON_UNSUPPORTED_RSN_IE_VERSION = 21,
REASON_INVALID_RSN_IE_CAPAB = 22,
REASON_IEEE_802_1X_AUTH_FAILED = 23,
REASON_CIPHER_SUITE_REJECTED = 24
};
#endif /* WPA_H */
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