93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
|
|
* WPA Supplicant / EAP-PSK shared routines
|
|
* Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of BSD
|
|
* license.
|
|
*
|
|
* See README and COPYING for more details.
|
|
*/
|
|
|
|
#ifndef EAP_PSK_COMMON_H
|
|
#define EAP_PSK_COMMON_H
|
|
|
|
|
|
#define EAP_PSK_RAND_LEN 16
|
|
#define EAP_PSK_MAC_LEN 16
|
|
#define EAP_PSK_TEK_LEN 16
|
|
#define EAP_PSK_MSK_LEN 64
|
|
#define EAP_PSK_PSK_LEN 16
|
|
#define EAP_PSK_AK_LEN 16
|
|
#define EAP_PSK_KDK_LEN 16
|
|
|
|
#define EAP_PSK_R_FLAG_CONT 1
|
|
#define EAP_PSK_R_FLAG_DONE_SUCCESS 2
|
|
#define EAP_PSK_R_FLAG_DONE_FAILURE 3
|
|
#define EAP_PSK_E_FLAG 0x20
|
|
|
|
/* Shared prefix for all EAP-PSK frames */
|
|
struct eap_psk_hdr {
|
|
u8 code;
|
|
u8 identifier;
|
|
u16 length; /* including code, identifier, and length */
|
|
u8 type; /* EAP_TYPE_PSK */
|
|
u8 flags;
|
|
} __attribute__ ((packed));
|
|
|
|
/* EAP-PSK First Message (AS -> Supplicant) */
|
|
struct eap_psk_hdr_1 {
|
|
u8 code;
|
|
u8 identifier;
|
|
u16 length; /* including code, identifier, and length */
|
|
u8 type; /* EAP_TYPE_PSK */
|
|
u8 flags;
|
|
u8 rand_s[EAP_PSK_RAND_LEN];
|
|
/* Followed by variable length ID_S */
|
|
} __attribute__ ((packed));
|
|
|
|
/* EAP-PSK Second Message (Supplicant -> AS) */
|
|
struct eap_psk_hdr_2 {
|
|
u8 code;
|
|
u8 identifier;
|
|
u16 length; /* including code, identifier, and length */
|
|
u8 type; /* EAP_TYPE_PSK */
|
|
u8 flags;
|
|
u8 rand_s[EAP_PSK_RAND_LEN];
|
|
u8 rand_p[EAP_PSK_RAND_LEN];
|
|
u8 mac_p[EAP_PSK_MAC_LEN];
|
|
/* Followed by variable length ID_P */
|
|
} __attribute__ ((packed));
|
|
|
|
/* EAP-PSK Third Message (AS -> Supplicant) */
|
|
struct eap_psk_hdr_3 {
|
|
u8 code;
|
|
u8 identifier;
|
|
u16 length; /* including code, identifier, and length */
|
|
u8 type; /* EAP_TYPE_PSK */
|
|
u8 flags;
|
|
u8 rand_s[EAP_PSK_RAND_LEN];
|
|
u8 mac_s[EAP_PSK_MAC_LEN];
|
|
/* Followed by variable length PCHANNEL */
|
|
} __attribute__ ((packed));
|
|
|
|
/* EAP-PSK Fourth Message (Supplicant -> AS) */
|
|
struct eap_psk_hdr_4 {
|
|
u8 code;
|
|
u8 identifier;
|
|
u16 length; /* including code, identifier, and length */
|
|
u8 type; /* EAP_TYPE_PSK */
|
|
u8 flags;
|
|
u8 rand_s[EAP_PSK_RAND_LEN];
|
|
/* Followed by variable length PCHANNEL */
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
void eap_psk_key_setup(const u8 *psk, u8 *ak, u8 *kdk);
|
|
void eap_psk_derive_keys(const u8 *kdk, const u8 *rand_p, u8 *tek, u8 *msk);
|
|
|
|
#endif /* EAP_PSK_COMMON_H */
|