#ifndef __MOBIUS_CRYPT_CIPHER_BLOCK_MODE_H__
#define __MOBIUS_CRYPT_CIPHER_BLOCK_MODE_H__

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Mobius Forensic Toolkit
// Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017 Eduardo Aguiar
//
// 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, 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, see <http://www.gnu.org/licenses/>.
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <mobius/bytearray.h>

namespace mobius
{
namespace crypt
{
class cipher_block;

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Abstract base class for block cipher operation mode
//! \author Eduardo Aguiar
//! \see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
class cipher_block_mode
{
public:
  cipher_block_mode () : cipher_ (nullptr) {}
  virtual ~cipher_block_mode () = default;
  void set_cipher (cipher_block *cipher)
  {
    cipher_ = cipher;
  }
  virtual void encrypt (mobius::bytearray&) noexcept = 0;
  virtual void decrypt (mobius::bytearray&) noexcept = 0;
  virtual void reset () = 0;

protected:
  cipher_block *cipher_;
};

} // namespace crypt
} // namespace mobius

#endif
