File: kasumi.h

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/*
* KASUMI
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_KASUMI_H__
#define BOTAN_KASUMI_H__

#include <botan/block_cipher.h>

namespace Botan {

/**
* KASUMI, the block cipher used in 3G telephony
*/
class BOTAN_DLL KASUMI : public Block_Cipher_Fixed_Params<8, 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() { zeroise(EK); }
      std::string name() const { return "KASUMI"; }
      BlockCipher* clone() const { return new KASUMI; }

      KASUMI() : EK(64) {}
   private:
      void key_schedule(const byte[], size_t);

      SecureVector<u16bit> EK;
   };

}

#endif