/*

* DES

* (C) 1999-2007 Jack Lloyd

*

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

*/

#ifndef BOTAN_DES_H_

#define BOTAN_DES_H_

#include <botan/block_cipher.h>

namespace Botan {

/**

* DES

*/

class DES final : public Block_Cipher_Fixed_Params<8, 8>

   {

   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 "DES"; }

      BlockCipher* clone() const override { return new DES; }

   private:

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

      secure_vector<uint32_t> m_round_key;

   };

/**

* Triple DES

*/

class TripleDES final : public Block_Cipher_Fixed_Params<8, 16, 24, 8>

   {

   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 "TripleDES"; }

      BlockCipher* clone() const override { return new TripleDES; }

   private:

#if defined(BOTAN_HAS_DES_BMI2)

      static void bmi2_encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks, const uint32_t key[]);

      static void bmi2_decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks, const uint32_t key[]);

#endif

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

      secure_vector<uint32_t> m_round_key;

   };

}

#endif