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/*
* 802.1x EAPOL definitions
*
* See
* IEEE Std 802.1X-2001
* IEEE 802.1X RADIUS Usage Guidelines
*
* Copyright (C) 2002 Broadcom Corporation
*
* $Id$
*/
#ifndef _eapol_h_
#define _eapol_h_
/* enable structure packing */
#if defined(__GNUC__)
#define PACKED __attribute__((packed))
#else
#pragma pack(1)
#define PACKED
#endif
#include <bcmcrypto/aeskeywrap.h>
/* EAPOL for 802.3/Ethernet */
typedef struct {
struct ether_header eth; /* 802.3/Ethernet header */
unsigned char version; /* EAPOL protocol version */
unsigned char type; /* EAPOL type */
unsigned short length; /* Length of body */
unsigned char body[1]; /* Body (optional) */
} eapol_header_t;
#define EAPOL_HEADER_LEN 18
/* EAPOL version */
#define WPA2_EAPOL_VERSION 2
#define WPA_EAPOL_VERSION 1
#define LEAP_EAPOL_VERSION 1
#define SES_EAPOL_VERSION 1
/* EAPOL types */
#define EAP_PACKET 0
#define EAPOL_START 1
#define EAPOL_LOGOFF 2
#define EAPOL_KEY 3
#define EAPOL_ASF 4
/* EAPOL-Key types */
#define EAPOL_RC4_KEY 1
#ifdef BCMWPA2
#define EAPOL_WPA2_KEY 2 /* 802.11i/WPA2 */
#endif
#define EAPOL_WPA_KEY 254 /* WPA */
/* RC4 EAPOL-Key header field sizes */
#define EAPOL_KEY_REPLAY_LEN 8
#define EAPOL_KEY_IV_LEN 16
#define EAPOL_KEY_SIG_LEN 16
/* RC4 EAPOL-Key */
typedef struct {
unsigned char type; /* Key Descriptor Type */
unsigned short length; /* Key Length (unaligned) */
unsigned char replay[EAPOL_KEY_REPLAY_LEN]; /* Replay Counter */
unsigned char iv[EAPOL_KEY_IV_LEN]; /* Key IV */
unsigned char index; /* Key Flags & Index */
unsigned char signature[EAPOL_KEY_SIG_LEN]; /* Key Signature */
unsigned char key[1]; /* Key (optional) */
} PACKED eapol_key_header_t;
#define EAPOL_KEY_HEADER_LEN 44
/* RC4 EAPOL-Key flags */
#define EAPOL_KEY_FLAGS_MASK 0x80
#define EAPOL_KEY_BROADCAST 0
#define EAPOL_KEY_UNICAST 0x80
/* RC4 EAPOL-Key index */
#define EAPOL_KEY_INDEX_MASK 0x7f
/* WPA/802.11i/WPA2 EAPOL-Key header field sizes */
#define EAPOL_WPA_KEY_REPLAY_LEN 8
#define EAPOL_WPA_KEY_NONCE_LEN 32
#define EAPOL_WPA_KEY_IV_LEN 16
#define EAPOL_WPA_KEY_RSC_LEN 8
#define EAPOL_WPA_KEY_ID_LEN 8
#define EAPOL_WPA_KEY_MIC_LEN 16
#define EAPOL_WPA_KEY_DATA_LEN (EAPOL_WPA_MAX_KEY_SIZE + AKW_BLOCK_LEN)
#define EAPOL_WPA_MAX_KEY_SIZE 32
/* WPA EAPOL-Key */
typedef struct {
unsigned char type; /* Key Descriptor Type */
unsigned short key_info; /* Key Information (unaligned) */
unsigned short key_len; /* Key Length (unaligned) */
unsigned char replay[EAPOL_WPA_KEY_REPLAY_LEN]; /* Replay Counter */
unsigned char nonce[EAPOL_WPA_KEY_NONCE_LEN]; /* Nonce */
unsigned char iv[EAPOL_WPA_KEY_IV_LEN]; /* Key IV */
unsigned char rsc[EAPOL_WPA_KEY_RSC_LEN]; /* Key RSC */
unsigned char id[EAPOL_WPA_KEY_ID_LEN]; /* WPA:Key ID, 802.11i/WPA2: Reserved */
unsigned char mic[EAPOL_WPA_KEY_MIC_LEN]; /* Key MIC */
unsigned short data_len; /* Key Data Length */
unsigned char data[EAPOL_WPA_KEY_DATA_LEN]; /* Key data */
} PACKED eapol_wpa_key_header_t;
#define EAPOL_WPA_KEY_LEN 95
/* WPA/802.11i/WPA2 KEY KEY_INFO bits */
#define WPA_KEY_DESC_V1 0x01
#define WPA_KEY_DESC_V2 0x02
#define WPA_KEY_PAIRWISE 0x08
#define WPA_KEY_INSTALL 0x40
#define WPA_KEY_ACK 0x80
#define WPA_KEY_MIC 0x100
#define WPA_KEY_SECURE 0x200
#define WPA_KEY_ERROR 0x400
#define WPA_KEY_REQ 0x800
/* WPA-only KEY KEY_INFO bits */
#define WPA_KEY_INDEX_0 0x00
#define WPA_KEY_INDEX_1 0x10
#define WPA_KEY_INDEX_2 0x20
#define WPA_KEY_INDEX_3 0x30
#define WPA_KEY_INDEX_MASK 0x30
#define WPA_KEY_INDEX_SHIFT 0x04
#ifdef BCMWPA2
/* 802.11i/WPA2-only KEY KEY_INFO bits */
#define WPA_KEY_ENCRYPTED_DATA 0x1000
/* Key Data encapsulation */
typedef struct {
uint8 type;
uint8 length;
uint8 oui[3];
uint8 subtype;
uint8 data[1];
} PACKED eapol_wpa2_encap_data_t;
#define EAPOL_WPA2_ENCAP_DATA_HDR_LEN 6
#define WPA2_KEY_DATA_SUBTYPE_GTK 1
#define WPA2_KEY_DATA_SUBTYPE_STAKEY 2
#define WPA2_KEY_DATA_SUBTYPE_MAC 3
#define WPA2_KEY_DATA_SUBTYPE_PMKID 4
/* GTK encapsulation */
typedef struct {
uint8 flags;
uint8 reserved;
uint8 gtk[EAPOL_WPA_MAX_KEY_SIZE];
} PACKED eapol_wpa2_key_gtk_encap_t;
#define EAPOL_WPA2_KEY_GTK_ENCAP_HDR_LEN 2
#define WPA2_GTK_INDEX_MASK 0x03
#define WPA2_GTK_INDEX_SHIFT 0x00
#define WPA2_GTK_TRANSMIT 0x04
/* STAKey encapsulation */
typedef struct {
uint8 reserved[2];
uint8 mac[ETHER_ADDR_LEN];
uint8 stakey[EAPOL_WPA_MAX_KEY_SIZE];
} PACKED eapol_wpa2_key_stakey_encap_t;
#define WPA2_KEY_DATA_PAD 0xdd
#endif /* BCMWPA2 */
#undef PACKED
#if !defined(__GNUC__)
#pragma pack()
#endif
#endif /* _eapol_h_ */
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