summaryrefslogtreecommitdiff
path: root/package/broadcom-wl/src/driver/proto/eapol.h
blob: cbf6b69617d085bedbf0e7aaae8049b7ed8bfed0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/*
 * 802.1x EAPOL definitions
 *
 * See
 * IEEE Std 802.1X-2001
 * IEEE 802.1X RADIUS Usage Guidelines
 *
 * Copyright (C) 2002 Broadcom Corporation
 *
 */

#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_ */