2
* EAP server/peer: EAP-PSK shared routines
3
* Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
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.
9
* Alternatively, this software may be distributed under the terms of BSD
12
* See README and COPYING for more details.
15
#ifndef EAP_PSK_COMMON_H
16
#define EAP_PSK_COMMON_H
19
#define EAP_PSK_RAND_LEN 16
20
#define EAP_PSK_MAC_LEN 16
21
#define EAP_PSK_TEK_LEN 16
22
#define EAP_PSK_PSK_LEN 16
23
#define EAP_PSK_AK_LEN 16
24
#define EAP_PSK_KDK_LEN 16
26
#define EAP_PSK_R_FLAG_CONT 1
27
#define EAP_PSK_R_FLAG_DONE_SUCCESS 2
28
#define EAP_PSK_R_FLAG_DONE_FAILURE 3
29
#define EAP_PSK_E_FLAG 0x20
31
#define EAP_PSK_FLAGS_GET_T(flags) (((flags) & 0xc0) >> 6)
32
#define EAP_PSK_FLAGS_SET_T(t) ((u8) (t) << 6)
38
/* EAP-PSK First Message (AS -> Supplicant) */
39
struct eap_psk_hdr_1 {
41
u8 rand_s[EAP_PSK_RAND_LEN];
42
/* Followed by variable length ID_S */
45
/* EAP-PSK Second Message (Supplicant -> AS) */
46
struct eap_psk_hdr_2 {
48
u8 rand_s[EAP_PSK_RAND_LEN];
49
u8 rand_p[EAP_PSK_RAND_LEN];
50
u8 mac_p[EAP_PSK_MAC_LEN];
51
/* Followed by variable length ID_P */
54
/* EAP-PSK Third Message (AS -> Supplicant) */
55
struct eap_psk_hdr_3 {
57
u8 rand_s[EAP_PSK_RAND_LEN];
58
u8 mac_s[EAP_PSK_MAC_LEN];
59
/* Followed by variable length PCHANNEL */
62
/* EAP-PSK Fourth Message (Supplicant -> AS) */
63
struct eap_psk_hdr_4 {
65
u8 rand_s[EAP_PSK_RAND_LEN];
66
/* Followed by variable length PCHANNEL */
74
int __must_check eap_psk_key_setup(const u8 *psk, u8 *ak, u8 *kdk);
75
int __must_check eap_psk_derive_keys(const u8 *kdk, const u8 *rand_p, u8 *tek,
78
#endif /* EAP_PSK_COMMON_H */