eap_gpsk_common.c File Reference

#include "includes.h"
#include "common.h"
#include "crypto/aes_wrap.h"
#include "crypto/sha256.h"
#include "eap_defs.h"
#include "eap_gpsk_common.h"

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Defines
#define	EAP_GPSK_PK_LEN_AES   16
#define	EAP_GPSK_SK_LEN_AES   16
Functions
int	eap_gpsk_compute_mic (const u8 *sk, size_t sk_len, int vendor, int specifier, const u8 *data, size_t len, u8 *mic)
static int	eap_gpsk_compute_mic_aes (const u8 *sk, size_t sk_len, const u8 *data, size_t len, u8 *mic)
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)
static int	eap_gpsk_derive_keys_aes (const u8 *psk, size_t psk_len, const u8 *seed, size_t seed_len, u8 *msk, u8 *emsk, u8 *sk, size_t *sk_len, u8 *pk, size_t *pk_len)
static int	eap_gpsk_derive_keys_helper (u32 csuite_specifier, u8 *kdf_out, size_t kdf_out_len, const u8 *psk, size_t psk_len, const u8 *seed, size_t seed_len, u8 *msk, u8 *emsk, u8 *sk, size_t sk_len, u8 *pk, size_t pk_len)
static int	eap_gpsk_gkdf_cmac (const u8 *psk, const u8 *data, size_t data_len, u8 *buf, size_t len)
size_t	eap_gpsk_mic_len (int vendor, int specifier)
int	eap_gpsk_supported_ciphersuite (int vendor, int specifier)

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Define Documentation

#define EAP_GPSK_PK_LEN_AES   16

#define EAP_GPSK_SK_LEN_AES   16

---

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
	)

eap_gpsk_compute_mic - Compute EAP-GPSK MIC for an EAP packet : Session key SK from eap_gpsk_derive_keys() : SK length in bytes from eap_gpsk_derive_keys() : CSuite/Vendor : CSuite/Specifier : Input data to MIC : Input data length in bytes : Buffer for the computed MIC, eap_gpsk_mic_len(cipher) bytes Returns: 0 on success, -1 on failure

Definition at line 397 of file eap_gpsk_common.c.

static int eap_gpsk_compute_mic_aes	(	const u8 *	sk,
		size_t	sk_len,
		const u8 *	data,
		size_t	len,
		u8 *	mic
	)			[static]

Definition at line 373 of file eap_gpsk_common.c.

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
	)

eap_gpsk_derive_keys - Derive EAP-GPSK keys : Pre-shared key : Length of psk in bytes : CSuite/Vendor : CSuite/Specifier : 32-byte RAND_Peer : 32-byte RAND_Server : ID_Peer : Length of ID_Peer : ID_Server : Length of ID_Server : Buffer for 64-byte MSK : Buffer for 64-byte EMSK : Buffer for SK (at least EAP_GPSK_MAX_SK_LEN bytes) : Buffer for returning length of SK : Buffer for PK (at least EAP_GPSK_MAX_PK_LEN bytes) : Buffer for returning length of PK Returns: 0 on success, -1 on failure

Definition at line 284 of file eap_gpsk_common.c.

static int eap_gpsk_derive_keys_aes	(	const u8 *	psk,
		size_t	psk_len,
		const u8 *	seed,
		size_t	seed_len,
		u8 *	msk,
		u8 *	emsk,
		u8 *	sk,
		size_t *	sk_len,
		u8 *	pk,
		size_t *	pk_len
	)			[static]

Definition at line 194 of file eap_gpsk_common.c.

static int eap_gpsk_derive_keys_helper	(	u32	csuite_specifier,
		u8 *	kdf_out,
		size_t	kdf_out_len,
		const u8 *	psk,
		size_t	psk_len,
		const u8 *	seed,
		size_t	seed_len,
		u8 *	msk,
		u8 *	emsk,
		u8 *	sk,
		size_t	sk_len,
		u8 *	pk,
		size_t	pk_len
	)			[static]

Definition at line 113 of file eap_gpsk_common.c.

static int eap_gpsk_gkdf_cmac	(	const u8 *	psk,
		const u8 *	data,
		size_t	data_len,
		u8 *	buf,
		size_t	len
	)			[static]

Definition at line 44 of file eap_gpsk_common.c.

size_t eap_gpsk_mic_len	(	int	vendor,
		int	specifier
	)

eap_gpsk_mic_len - Get the length of the MIC : CSuite/Vendor : CSuite/Specifier Returns: MIC length in bytes

Definition at line 355 of file eap_gpsk_common.c.

int eap_gpsk_supported_ciphersuite	(	int	vendor,
		int	specifier
	)

eap_gpsk_supported_ciphersuite - Check whether ciphersuite is supported : CSuite/Vendor : CSuite/Specifier Returns: 1 if ciphersuite is support, or 0 if not

Definition at line 30 of file eap_gpsk_common.c.