blowfish_crypto.h

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#ifndef BLOWFISH_CRYPTO_CLASS
#define BLOWFISH_CRYPTO_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : blowfish encryption                                               *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 2005-$now By Author.  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 is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "crypto_dll.h"

#include <basis/object_base.h>


class CRYPTO_CLASS_STYLE blowfish_crypto : public virtual object_base
{
public:
  blowfish_crypto(int key_size);

  blowfish_crypto(const byte_array &key, int key_size);

  blowfish_crypto(const blowfish_crypto &to_copy);  

  virtual ~blowfish_crypto();

  blowfish_crypto &operator = (const blowfish_crypto &to_copy);

  IMPLEMENT_CLASS_NAME("blowfish_crypto");

  int key_size() const;  // returns the size of our key, in bits.

  static int minimum_key_size();
  static int maximum_key_size();

  const byte_array &get_key() const;  

  bool set_key(const byte_array &new_key, int key_size);

  static void generate_key(int size, byte_array &new_key);

  bool encrypt(const byte_array &source, byte_array &target) const;

  bool decrypt(const byte_array &source, byte_array &target) const;

  // seldom-needed methods...

  static const byte_array &init_vector();

private:
  int _key_size;  
  byte_array *_key;  
};

#endif

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