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/*
* 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;
struct ieee8023_hdr {
u8 dest[ETH_ALEN];
u8 src[ETH_ALEN];
be16 ethertype;
} STRUCT_PACKED;
#ifdef _MSC_VER
#pragma pack(pop)
#endif /* _MSC_VER */
#ifdef CONFIG_MACSEC
#define EAPOL_VERSION 3
#else /* CONFIG_MACSEC */
#define EAPOL_VERSION 2
#endif /* CONFIG_MACSEC */
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,
IEEE802_1X_TYPE_EAPOL_MKA = 5,
};
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 */
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