1/*
2 * EAP server/peer: EAP-PAX shared routines
3 * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#ifndef EAP_PAX_COMMON_H
10#define EAP_PAX_COMMON_H
11
12#ifdef _MSC_VER
13#pragma pack(push, 1)
14#endif /* _MSC_VER */
15
16struct eap_pax_hdr {
17	u8 op_code;
18	u8 flags;
19	u8 mac_id;
20	u8 dh_group_id;
21	u8 public_key_id;
22	/* Followed by variable length payload and ICV */
23} STRUCT_PACKED;
24
25#ifdef _MSC_VER
26#pragma pack(pop)
27#endif /* _MSC_VER */
28
29
30/* op_code: */
31enum {
32	EAP_PAX_OP_STD_1 = 0x01,
33	EAP_PAX_OP_STD_2 = 0x02,
34	EAP_PAX_OP_STD_3 = 0x03,
35	EAP_PAX_OP_SEC_1 = 0x11,
36	EAP_PAX_OP_SEC_2 = 0x12,
37	EAP_PAX_OP_SEC_3 = 0x13,
38	EAP_PAX_OP_SEC_4 = 0x14,
39	EAP_PAX_OP_SEC_5 = 0x15,
40	EAP_PAX_OP_ACK = 0x21
41};
42
43/* flags: */
44#define EAP_PAX_FLAGS_MF			0x01
45#define EAP_PAX_FLAGS_CE			0x02
46#define EAP_PAX_FLAGS_AI			0x04
47
48/* mac_id: */
49#define EAP_PAX_MAC_HMAC_SHA1_128		0x01
50#define EAP_PAX_HMAC_SHA256_128			0x02
51
52/* dh_group_id: */
53#define EAP_PAX_DH_GROUP_NONE			0x00
54#define EAP_PAX_DH_GROUP_2048_MODP		0x01
55#define EAP_PAX_DH_GROUP_3072_MODP		0x02
56#define EAP_PAX_DH_GROUP_NIST_ECC_P_256		0x03
57
58/* public_key_id: */
59#define EAP_PAX_PUBLIC_KEY_NONE			0x00
60#define EAP_PAX_PUBLIC_KEY_RSAES_OAEP		0x01
61#define EAP_PAX_PUBLIC_KEY_RSA_PKCS1_V1_5	0x02
62#define EAP_PAX_PUBLIC_KEY_EL_GAMAL_NIST_ECC	0x03
63
64/* ADE type: */
65#define EAP_PAX_ADE_VENDOR_SPECIFIC		0x01
66#define EAP_PAX_ADE_CLIENT_CHANNEL_BINDING	0x02
67#define EAP_PAX_ADE_SERVER_CHANNEL_BINDING	0x03
68
69
70#define EAP_PAX_RAND_LEN 32
71#define EAP_PAX_MAC_LEN 16
72#define EAP_PAX_ICV_LEN 16
73#define EAP_PAX_AK_LEN 16
74#define EAP_PAX_MK_LEN 16
75#define EAP_PAX_CK_LEN 16
76#define EAP_PAX_ICK_LEN 16
77
78
79int eap_pax_kdf(u8 mac_id, const u8 *key, size_t key_len,
80		const char *identifier,
81		const u8 *entropy, size_t entropy_len,
82		size_t output_len, u8 *output);
83int eap_pax_mac(u8 mac_id, const u8 *key, size_t key_len,
84		const u8 *data1, size_t data1_len,
85		const u8 *data2, size_t data2_len,
86		const u8 *data3, size_t data3_len,
87		u8 *mac);
88int eap_pax_initial_key_derivation(u8 mac_id, const u8 *ak, const u8 *e,
89				   u8 *mk, u8 *ck, u8 *ick);
90
91#endif /* EAP_PAX_COMMON_H */
92