File: noekeon.h

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/*
* Noekeon
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_NOEKEON_H__
#define BOTAN_NOEKEON_H__

#include <botan/block_cipher.h>

namespace Botan {

/**
* Noekeon
*/
class BOTAN_DLL Noekeon : public Block_Cipher_Fixed_Params<16, 16>
   {
   public:
      void encrypt_n(const byte in[], byte out[], size_t blocks) const;
      void decrypt_n(const byte in[], byte out[], size_t blocks) const;

      void clear();
      std::string name() const { return "Noekeon"; }
      BlockCipher* clone() const { return new Noekeon; }

      Noekeon() : EK(4), DK(4) {}
   protected:
      /**
      * The Noekeon round constants
      */
      static const byte RC[17];

      /**
      * @return const reference to encryption subkeys
      */
      const SecureVector<u32bit>& get_EK() const { return EK; }

      /**
      * @return const reference to decryption subkeys
      */
      const SecureVector<u32bit>& get_DK() const { return DK; }

   private:
      void key_schedule(const byte[], size_t);
      SecureVector<u32bit> EK, DK;
   };

}

#endif