eap_sake_common.c File Reference

#include "includes.h"
#include "common.h"
#include "wpabuf.h"
#include "crypto/sha1.h"
#include "eap_defs.h"
#include "eap_sake_common.h"

Include dependency graph for eap_sake_common.c:

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Functions
void	eap_sake_add_attr (struct wpabuf *buf, u8 type, const u8 *data, size_t len)
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)
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)
static void	eap_sake_kdf (const u8 *key, size_t key_len, const char *label, const u8 *data, size_t data_len, const u8 *data2, size_t data2_len, u8 *buf, size_t buf_len)
static int	eap_sake_parse_add_attr (struct eap_sake_parse_attr *attr, const u8 *pos)
int	eap_sake_parse_attributes (const u8 *buf, size_t len, struct eap_sake_parse_attr *attr)

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Function Documentation

void eap_sake_add_attr	(	struct wpabuf *	buf,
		u8	type,
		const u8 *	data,
		size_t	len
	)

Definition at line 384 of file eap_sake_common.c.

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
	)

eap_sake_compute_mic - Compute EAP-SAKE MIC for an EAP packet : 16-byte TEK-Auth : 16-byte RAND_S : 16-byte RAND_P : SERVERID : SERVERID length : PEERID : PEERID length : MIC calculation for 0 = Server, 1 = Peer message : EAP packet : EAP packet length : MIC position in the EAP packet (must be [eap .. eap + eap_len]) : Buffer for the computed 16-byte MIC

Definition at line 322 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
	)

eap_sake_derive_keys - Derive EAP-SAKE keys : 16-byte Root-Secret-A : 16-byte Root-Secret-B : 16-byte RAND_S : 16-byte RAND_P : Buffer for Temporary EAK Keys (TEK-Auth[16] | TEK-Cipher[16]) : Buffer for 64-byte MSK : Buffer for 64-byte EMSK

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

Definition at line 265 of file eap_sake_common.c.

static void eap_sake_kdf	(	const u8 *	key,
		size_t	key_len,
		const char *	label,
		const u8 *	data,
		size_t	data_len,
		const u8 *	data2,
		size_t	data2_len,
		u8 *	buf,
		size_t	buf_len
	)			[static]

eap_sake_kdf - EAP-SAKE Key Derivation Function (KDF) : Key for KDF : Length of the key in bytes : A unique label for each purpose of the KDF : Extra data (start) to bind into the key : Length of the data : Extra data (end) to bind into the key : Length of the data2 : Buffer for the generated pseudo-random key : Number of bytes of key to generate

This function is used to derive new, cryptographically separate keys from a given key (e.g., SMS). This is identical to the PRF used in IEEE 802.11i.

Definition at line 214 of file eap_sake_common.c.

static int eap_sake_parse_add_attr	(	struct eap_sake_parse_attr *	attr,
		const u8 *	pos
	)			[static]

Definition at line 24 of file eap_sake_common.c.

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

eap_sake_parse_attributes - Parse EAP-SAKE attributes : Packet payload (starting with the first attribute) : Payload length : Structure to be filled with found attributes Returns: 0 on success or -1 on failure

Definition at line 166 of file eap_sake_common.c.