| /* |
| * EAPOL definitions shared between hostapd and wpa_supplicant |
| * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi> |
| * |
| * This software may be distributed under the terms of the BSD license. |
| * See README for more details. |
| */ |
| |
| #ifndef EAPOL_COMMON_H |
| #define EAPOL_COMMON_H |
| |
| /* IEEE Std 802.1X-2004 */ |
| |
| #ifdef _MSC_VER |
| #pragma pack(push, 1) |
| #endif /* _MSC_VER */ |
| |
| struct ieee802_1x_hdr { |
| u8 version; |
| u8 type; |
| be16 length; |
| /* followed by length octets of data */ |
| } STRUCT_PACKED; |
| |
| #ifdef _MSC_VER |
| #pragma pack(pop) |
| #endif /* _MSC_VER */ |
| |
| #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 |
| |
| #ifdef _MSC_VER |
| #pragma pack(push, 1) |
| #endif /* _MSC_VER */ |
| |
| struct ieee802_1x_eapol_key { |
| u8 type; |
| /* Note: key_length is unaligned */ |
| u8 key_length[2]; |
| /* 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 */ |
| } STRUCT_PACKED; |
| |
| #ifdef _MSC_VER |
| #pragma pack(pop) |
| #endif /* _MSC_VER */ |
| |
| #endif /* EAPOL_COMMON_H */ |