112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
|
|
*
|
|
* Wireless daemon for Linux
|
|
*
|
|
* Copyright (C) 2013-2014 Intel Corporation. All rights reserved.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <asm/byteorder.h>
|
|
#include <linux/types.h>
|
|
|
|
enum eapol_protocol_version {
|
|
EAPOL_PROTOCOL_VERSION_2001 = 1,
|
|
EAPOL_PROTOCOL_VERSION_2004 = 2,
|
|
};
|
|
|
|
/*
|
|
* 802.1X-2010: Table 11-5—Descriptor Type value assignments
|
|
* The WPA key type of 254 comes from somewhere else. Seems it is a legacy
|
|
* value that might still be used by older implementations
|
|
*/
|
|
enum eapol_descriptor_type {
|
|
EAPOL_DESCRIPTOR_TYPE_RC4 = 1,
|
|
EAPOL_DESCRIPTOR_TYPE_80211 = 2,
|
|
EAPOL_DESCRIPTOR_TYPE_WPA = 254,
|
|
};
|
|
|
|
enum eapol_key_descriptor_version {
|
|
EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_MD5_ARC4 = 1,
|
|
EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_SHA1_AES = 2,
|
|
EAPOL_KEY_DESCRIPTOR_VERSION_AES_128_CMAC_AES = 3,
|
|
};
|
|
|
|
struct eapol_key {
|
|
uint8_t protocol_version;
|
|
uint8_t packet_type;
|
|
__be16 packet_len;
|
|
uint8_t descriptor_type;
|
|
#if defined(__LITTLE_ENDIAN_BITFIELD)
|
|
bool key_mic:1;
|
|
bool secure:1;
|
|
bool error:1;
|
|
bool request:1;
|
|
bool encrypted_key_data:1;
|
|
bool smk_message:1;
|
|
uint8_t reserved2:2;
|
|
uint8_t key_descriptor_version:3;
|
|
bool key_type:1;
|
|
uint8_t reserved1:2;
|
|
bool install:1;
|
|
bool key_ack:1;
|
|
#elif defined (__BIG_ENDIAN_BITFIELD)
|
|
uint8_t reserved2:2;
|
|
bool smk_message:1;
|
|
bool encrypted_key_data:1;
|
|
bool request:1;
|
|
bool error:1;
|
|
bool secure:1;
|
|
bool key_mic:1;
|
|
bool key_ack:1;
|
|
bool install:1;
|
|
uint8_t reserved1:2;
|
|
bool key_type:1;
|
|
uint8_t key_descriptor_version:3;
|
|
#else
|
|
#error "Please fix <asm/byteorder.h>"
|
|
#endif
|
|
|
|
__be16 key_length;
|
|
uint8_t key_replay_counter[8];
|
|
uint8_t key_nonce[32];
|
|
uint8_t eapol_key_iv[16];
|
|
uint8_t key_rsc[8];
|
|
uint8_t reserved[8];
|
|
uint8_t key_mic_data[16];
|
|
__be16 key_data_len;
|
|
uint8_t key_data[0];
|
|
} __attribute__ ((packed));
|
|
|
|
bool eapol_calculate_mic(const uint8_t *kck, const struct eapol_key *frame,
|
|
uint8_t *mic);
|
|
|
|
bool eapol_verify(const uint8_t *data, size_t len);
|
|
|
|
bool eapol_process_ptk_1_of_4(const uint8_t *data, size_t len,
|
|
uint8_t out_anonce[]);
|
|
bool eapol_process_ptk_2_of_4(const uint8_t *data, size_t len,
|
|
uint8_t out_snonce[]);
|
|
struct eapol_key *eapol_create_ptk_2_of_4(
|
|
enum eapol_protocol_version protocol,
|
|
enum eapol_key_descriptor_version version,
|
|
const uint8_t key_replay_counter[],
|
|
const uint8_t snonce[],
|
|
size_t extra_len,
|
|
const uint8_t *extra_data);
|