/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
 *            srtp.h
 *
 *  Thu Sep  5 10:46:10 CEST 2013
 *  Copyright 2013 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of lrtp.
 *
 * lrtp is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * lrtp 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with lrtp; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
#ifndef __LRTP_SRTP_H__
#define __LRTP_SRTP_H__

#include <string>

#include "lrtp.h"
#include "rtp.h"
#include "compat.h"

#define MAX_KEY_LEN 64
#define MASTER_KEY_LEN 30

class SRTP {
public:
  SRTP(std::string key, unsigned int ssrc) _throw(enum lrtp_status_t);
  ~SRTP();

  int encrypt(char *packet, size_t size) _throw(enum lrtp_status_t);
  int decrypt(char *packet, size_t size) _throw(enum lrtp_status_t);

private:
  class SRTPInstance {
  public:
    SRTPInstance() _throw(enum lrtp_status_t);
    ~SRTPInstance() _throw(enum lrtp_status_t);
  };

  SRTPInstance instance;

  struct prv;
  struct prv *prv;

  void setupKey(const std::string &key) _throw(enum lrtp_status_t);
  void setupPolicy(bool confidentiality, bool authentication)
    _throw(enum lrtp_status_t);
};

#endif/*__LRTP_SRTP_H__*/