1/*
2 * EAP server/peer: EAP-GPSK shared routines
3 * Copyright (c) 2006-2007, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#ifndef EAP_GPSK_COMMON_H
16#define EAP_GPSK_COMMON_H
17
18#define EAP_GPSK_OPCODE_GPSK_1 1
19#define EAP_GPSK_OPCODE_GPSK_2 2
20#define EAP_GPSK_OPCODE_GPSK_3 3
21#define EAP_GPSK_OPCODE_GPSK_4 4
22#define EAP_GPSK_OPCODE_FAIL 5
23#define EAP_GPSK_OPCODE_PROTECTED_FAIL 6
24
25/* Failure-Code in GPSK-Fail and GPSK-Protected-Fail */
26#define EAP_GPSK_FAIL_PSK_NOT_FOUND 0x00000001
27#define EAP_GPSK_FAIL_AUTHENTICATION_FAILURE 0x00000002
28#define EAP_GPSK_FAIL_AUTHORIZATION_FAILURE 0x00000003
29
30#define EAP_GPSK_RAND_LEN 32
31#define EAP_GPSK_MAX_SK_LEN 32
32#define EAP_GPSK_MAX_PK_LEN 32
33#define EAP_GPSK_MAX_MIC_LEN 32
34
35#define EAP_GPSK_VENDOR_IETF		0x00000000
36#define EAP_GPSK_CIPHER_RESERVED	0x000000
37#define EAP_GPSK_CIPHER_AES		0x000001
38#define EAP_GPSK_CIPHER_SHA256		0x000002
39
40
41#ifdef _MSC_VER
42#pragma pack(push, 1)
43#endif /* _MSC_VER */
44
45struct eap_gpsk_csuite {
46	u8 vendor[4];
47	u8 specifier[2];
48} STRUCT_PACKED;
49
50#ifdef _MSC_VER
51#pragma pack(pop)
52#endif /* _MSC_VER */
53
54int eap_gpsk_supported_ciphersuite(int vendor, int specifier);
55int eap_gpsk_derive_keys(const u8 *psk, size_t psk_len, int vendor,
56			 int specifier,
57			 const u8 *rand_client, const u8 *rand_server,
58			 const u8 *id_client, size_t id_client_len,
59			 const u8 *id_server, size_t id_server_len,
60			 u8 *msk, u8 *emsk, u8 *sk, size_t *sk_len,
61			 u8 *pk, size_t *pk_len);
62size_t eap_gpsk_mic_len(int vendor, int specifier);
63int eap_gpsk_compute_mic(const u8 *sk, size_t sk_len, int vendor,
64			 int specifier, const u8 *data, size_t len, u8 *mic);
65
66#endif /* EAP_GPSK_COMMON_H */
67