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/*
* Copyright (c) 2008-2010 Moxie Marlinspike
*
* 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 3 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#ifndef __HOTP_CREDENTIALS_H__
#define __HOTP_CREDENTIALS_H__
#include <stdint.h>
#include <string>
#include <security/pam_modules.h>
#include <security/pam_ext.h>
using namespace std;
#define KEY_SIZE 16
class HOTPCredentials {
private:
const pam_handle_t *pamh;
unsigned char key[KEY_SIZE];
uint32_t pin;
uint64_t counter;
void loadCounter(const string &path);
void loadKey(const string &path);
void loadPin(const string &path);
void serializePin(const string &path);
void serializeKey(const string &path);
public:
HOTPCredentials(uint64_t counter, uint32_t pin, unsigned char *key);
HOTPCredentials(const pam_handle_t *pamh, const string &path);
void setCounter(uint64_t counter);
void serializeCounter(const string &path);
void serialize(const string &path);
uint64_t getCounter();
uint32_t getPin();
const unsigned char* getKey();
uint32_t getKeyLength();
};
#endif
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