eap_gpsk_common.c File Reference

EAP server/peer: EAP-GPSK shared routines. More...

#include "includes.h"
#include "common.h"
#include "eap_defs.h"
#include "aes_wrap.h"
#include "crypto.h"
#include "eap_gpsk_common.h"

Include dependency graph for eap_gpsk_common.c:

Go to the source code of this file.

Defines
#define	EAP_GPSK_SK_LEN_AES   16
#define	EAP_GPSK_PK_LEN_AES   16
Functions
int	eap_gpsk_supported_ciphersuite (int vendor, int specifier)
	Check whether ciphersuite is supported.
int	eap_gpsk_derive_keys (const u8 *psk, size_t psk_len, int vendor, int specifier, const u8 *rand_peer, const u8 *rand_server, const u8 *id_peer, size_t id_peer_len, const u8 *id_server, size_t id_server_len, u8 *msk, u8 *emsk, u8 *sk, size_t *sk_len, u8 *pk, size_t *pk_len)
	Derive EAP-GPSK keys.
size_t	eap_gpsk_mic_len (int vendor, int specifier)
	Get the length of the MIC.
int	eap_gpsk_compute_mic (const u8 *sk, size_t sk_len, int vendor, int specifier, const u8 *data, size_t len, u8 *mic)
	Compute EAP-GPSK MIC for an EAP packet.

---

Detailed Description

EAP server/peer: EAP-GPSK shared routines.

Copyright

Copyright (c) 2006-2007, Jouni Malinen <j@w1.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.

Definition in file eap_gpsk_common.c.

---

Function Documentation

int eap_gpsk_compute_mic	(	const u8 *	sk,
		size_t	sk_len,
		int	vendor,
		int	specifier,
		const u8 *	data,
		size_t	len,
		u8 *	mic
	)

Compute EAP-GPSK MIC for an EAP packet.

Parameters:

	sk	Session key SK from eap_gpsk_derive_keys()
	sk_len	SK length in bytes from eap_gpsk_derive_keys()
	vendor	CSuite/Vendor
	specifier	CSuite/Specifier
	data	Input data to MIC
	len	Input data length in bytes
	mic	Buffer for the computed MIC, eap_gpsk_mic_len(cipher) bytes

Returns:

0 on success, -1 on failure

Definition at line 405 of file eap_gpsk_common.c.

Here is the call graph for this function:

int eap_gpsk_derive_keys	(	const u8 *	psk,
		size_t	psk_len,
		int	vendor,
		int	specifier,
		const u8 *	rand_peer,
		const u8 *	rand_server,
		const u8 *	id_peer,
		size_t	id_peer_len,
		const u8 *	id_server,
		size_t	id_server_len,
		u8 *	msk,
		u8 *	emsk,
		u8 *	sk,
		size_t *	sk_len,
		u8 *	pk,
		size_t *	pk_len
	)

Derive EAP-GPSK keys.

Parameters:

	psk	Pre-shared key
	psk_len	Length of psk in bytes
	vendor	CSuite/Vendor
	specifier	CSuite/Specifier
	rand_peer	32-byte RAND_Peer
	rand_server	32-byte RAND_Server
	id_peer	ID_Peer
	id_peer_len	Length of ID_Peer
	id_server	ID_Server
	id_server_len	Length of ID_Server
	msk	Buffer for 64-byte MSK
	emsk	Buffer for 64-byte EMSK
	sk	Buffer for SK (at least EAP_GPSK_MAX_SK_LEN bytes)
	sk_len	Buffer for returning length of SK
	pk	Buffer for PK (at least EAP_GPSK_MAX_PK_LEN bytes)
	pk_len	Buffer for returning length of PK

Returns:

0 on success, -1 on failure

Definition at line 290 of file eap_gpsk_common.c.

Here is the call graph for this function:

size_t eap_gpsk_mic_len	(	int	vendor,
		int	specifier
	)

Get the length of the MIC.

Parameters:

	vendor	CSuite/Vendor
	specifier	CSuite/Specifier

Returns:

MIC length in bytes

Definition at line 362 of file eap_gpsk_common.c.

int eap_gpsk_supported_ciphersuite	(	int	vendor,
		int	specifier
	)

Check whether ciphersuite is supported.

Parameters:

	vendor	CSuite/Vendor
	specifier	CSuite/Specifier

Returns:

1 if ciphersuite is support, or 0 if not

Definition at line 35 of file eap_gpsk_common.c.