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/*
* eap_sim.h Header file containing the EAP-SIM types
*
* Version: $Id$
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* Copyright 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
* Copyright 2006 The FreeRADIUS server project
*
*/
#ifndef _EAP_SIM_H
#define _EAP_SIM_H
RCSIDH(eap_sim_h, "$Id$")
#include "eap_types.h"
#define EAP_SIM_VERSION 0x0001
enum eapsim_subtype {
EAPSIM_START = 10,
EAPSIM_CHALLENGE = 11,
EAPSIM_NOTIFICATION = 12,
EAPSIM_REAUTH = 13,
EAPSIM_CLIENT_ERROR = 14,
EAPSIM_MAX_SUBTYPE = 15
};
enum eapsim_clientstates {
EAPSIM_CLIENT_INIT = 0,
EAPSIM_CLIENT_START = 1,
EAPSIM_CLIENT_MAXSTATES
};
/* server states
*
* in server_start, we send a EAP-SIM Start message.
*
*/
enum eapsim_serverstates {
EAPSIM_SERVER_START = 0,
EAPSIM_SERVER_CHALLENGE = 1,
EAPSIM_SERVER_SUCCESS = 10,
EAPSIM_SERVER_MAXSTATES
};
/*
* interfaces in eapsimlib.c
*/
int map_eapsim_basictypes(RADIUS_PACKET *r, eap_packet_t *ep);
char const *sim_state2name(enum eapsim_clientstates state, char *buf, int buflen);
char const *sim_subtype2name(enum eapsim_subtype subtype, char *buf, int buflen);
int unmap_eapsim_basictypes(RADIUS_PACKET *r, uint8_t *attr, unsigned int attrlen);
/************************/
/* CRYPTO FUNCTIONS */
/************************/
/*
* key derivation functions/structures
*
*/
#define EAPSIM_SRES_SIZE 4
#define EAPSIM_RAND_SIZE 16
#define EAPSIM_KC_SIZE 8
#define EAPSIM_CALCMAC_SIZE 20
#define EAPSIM_NONCEMT_SIZE 16
#define EAPSIM_AUTH_SIZE 16
struct eapsim_keys {
/* inputs */
uint8_t identity[MAX_STRING_LEN];
unsigned int identitylen;
uint8_t nonce_mt[EAPSIM_NONCEMT_SIZE];
uint8_t rand[3][EAPSIM_RAND_SIZE];
uint8_t sres[3][EAPSIM_SRES_SIZE];
uint8_t Kc[3][EAPSIM_KC_SIZE];
uint8_t versionlist[MAX_STRING_LEN];
uint8_t versionlistlen;
uint8_t versionselect[2];
/* outputs */
uint8_t master_key[20];
uint8_t K_aut[EAPSIM_AUTH_SIZE];
uint8_t K_encr[16];
uint8_t msk[64];
uint8_t emsk[64];
};
/*
* interfaces in eapsimlib.c
*/
int eapsim_checkmac(TALLOC_CTX *ctx, VALUE_PAIR *rvps,
uint8_t key[EAPSIM_AUTH_SIZE],
uint8_t *extra, int extralen,
uint8_t calcmac[20]);
/*
* in eapcrypto.c
*/
void eapsim_calculate_keys(struct eapsim_keys *ek);
void eapsim_dump_mk(struct eapsim_keys *ek);
#endif /* _EAP_SIM_H */
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