diff options
Diffstat (limited to 'src/common/eapol_common.h')
| -rw-r--r-- | src/common/eapol_common.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/common/eapol_common.h b/src/common/eapol_common.h index 4e392e7..4811f38 100644 --- a/src/common/eapol_common.h +++ b/src/common/eapol_common.h @@ -38,4 +38,44 @@ enum { IEEE802_1X_TYPE_EAP_PACKET = 0, 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 */ |