/*

* CAST-128

* (C) 1999-2007 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#ifndef BOTAN_CAST128_H_

#define BOTAN_CAST128_H_

#include <botan/block_cipher.h>

namespace Botan {

/**

* CAST-128

*/

class CAST_128 final : public Block_Cipher_Fixed_Params<8, 11, 16>

   {

   public:

      void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;

      void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;

      void clear() override;

      std::string name() const override { return "CAST-128"; }

      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<CAST_128>(); }

   private:

      void key_schedule(const uint8_t[], size_t) override;

      static void cast_ks(secure_vector<uint32_t>& ks,

                          secure_vector<uint32_t>& user_key);

      secure_vector<uint32_t> m_MK;

      secure_vector<uint8_t> m_RK;

   };

}

#endif