eap_sake_common.h File Reference

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

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Data Structures
struct	eap_sake_hdr
struct	eap_sake_parse_attr
Defines
#define	EAP_SAKE_VERSION   2
#define	EAP_SAKE_SUBTYPE_CHALLENGE   1
#define	EAP_SAKE_SUBTYPE_CONFIRM   2
#define	EAP_SAKE_SUBTYPE_AUTH_REJECT   3
#define	EAP_SAKE_SUBTYPE_IDENTITY   4
#define	EAP_SAKE_AT_RAND_S   1
#define	EAP_SAKE_AT_RAND_P   2
#define	EAP_SAKE_AT_MIC_S   3
#define	EAP_SAKE_AT_MIC_P   4
#define	EAP_SAKE_AT_SERVERID   5
#define	EAP_SAKE_AT_PEERID   6
#define	EAP_SAKE_AT_SPI_S   7
#define	EAP_SAKE_AT_SPI_P   8
#define	EAP_SAKE_AT_ANY_ID_REQ   9
#define	EAP_SAKE_AT_PERM_ID_REQ   10
#define	EAP_SAKE_AT_ENCR_DATA   128
#define	EAP_SAKE_AT_IV   129
#define	EAP_SAKE_AT_PADDING   130
#define	EAP_SAKE_AT_NEXT_TMPID   131
#define	EAP_SAKE_AT_MSK_LIFE   132
#define	EAP_SAKE_RAND_LEN   16
#define	EAP_SAKE_MIC_LEN   16
#define	EAP_SAKE_ROOT_SECRET_LEN   16
#define	EAP_SAKE_SMS_LEN   16
#define	EAP_SAKE_TEK_AUTH_LEN   16
#define	EAP_SAKE_TEK_CIPHER_LEN   16
#define	EAP_SAKE_TEK_LEN   (EAP_SAKE_TEK_AUTH_LEN + EAP_SAKE_TEK_CIPHER_LEN)
Functions
int	eap_sake_parse_attributes (const u8 *buf, size_t len, struct eap_sake_parse_attr *attr)
	Parse EAP-SAKE attributes.
void	eap_sake_derive_keys (const u8 *root_secret_a, const u8 *root_secret_b, const u8 *rand_s, const u8 *rand_p, u8 *tek, u8 *msk, u8 *emsk)
	Derive EAP-SAKE keys.
int	eap_sake_compute_mic (const u8 *tek_auth, const u8 *rand_s, const u8 *rand_p, const u8 *serverid, size_t serverid_len, const u8 *peerid, size_t peerid_len, int peer, const u8 *eap, size_t eap_len, const u8 *mic_pos, u8 *mic)
	Compute EAP-SAKE MIC for an EAP packet.
void	eap_sake_add_attr (struct wpabuf *buf, u8 type, const u8 *data, size_t len)
Variables
struct eap_sake_hdr	STRUCT_PACKED

---

Detailed Description

EAP server/peer: EAP-SAKE 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_sake_common.h.

---

Function Documentation

int eap_sake_compute_mic	(	const u8 *	tek_auth,
		const u8 *	rand_s,
		const u8 *	rand_p,
		const u8 *	serverid,
		size_t	serverid_len,
		const u8 *	peerid,
		size_t	peerid_len,
		int	peer,
		const u8 *	eap,
		size_t	eap_len,
		const u8 *	mic_pos,
		u8 *	mic
	)

Compute EAP-SAKE MIC for an EAP packet.

Parameters:

	tek_auth	16-byte TEK-Auth
	rand_s	16-byte RAND_S
	rand_p	16-byte RAND_P
	serverid	SERVERID
	serverid_len	SERVERID length
	peerid	PEERID
	peerid_len	PEERID length
	peer	MIC calculation for 0 = Server, 1 = Peer message
	eap	EAP packet
	eap_len	EAP packet length
	mic_pos	MIC position in the EAP packet (must be [eap .. eap + eap_len])
	mic	Buffer for the computed 16-byte MIC

Definition at line 327 of file eap_sake_common.c.

void eap_sake_derive_keys	(	const u8 *	root_secret_a,
		const u8 *	root_secret_b,
		const u8 *	rand_s,
		const u8 *	rand_p,
		u8 *	tek,
		u8 *	msk,
		u8 *	emsk
	)

Derive EAP-SAKE keys.

Parameters:

	root_secret_a	16-byte Root-Secret-A
	root_secret_b	16-byte Root-Secret-B
	rand_s	16-byte RAND_S
	rand_p	16-byte RAND_P
	tek	Buffer for Temporary EAK Keys (TEK-Auth[16] | TEK-Cipher[16])
	msk	Buffer for 64-byte MSK
	emsk	Buffer for 64-byte EMSK

This function derives EAP-SAKE keys as defined in RFC 4763, section 3.2.6.

Definition at line 269 of file eap_sake_common.c.

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int eap_sake_parse_attributes	(	const u8 *	buf,
		size_t	len,
		struct eap_sake_parse_attr *	attr
	)

Parse EAP-SAKE attributes.

Parameters:

	buf	Packet payload (starting with the first attribute)
	len	Payload length
	attr	Structure to be filled with found attributes

Returns:

0 on success or -1 on failure

Definition at line 168 of file eap_sake_common.c.

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