/*

* 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>

BOTAN_FUTURE_INTERNAL_HEADER(des.h)

namespace Botan {

/**

* DES

*/

class BOTAN_PUBLIC_API(2,0) 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 BOTAN_PUBLIC_API(2,0) 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:

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

      secure_vector<uint32_t> m_round_key;

   };

/*

* DES Tables

*/

extern const uint32_t DES_SPBOX1[256];

extern const uint32_t DES_SPBOX2[256];

extern const uint32_t DES_SPBOX3[256];

extern const uint32_t DES_SPBOX4[256];

extern const uint32_t DES_SPBOX5[256];

extern const uint32_t DES_SPBOX6[256];

extern const uint32_t DES_SPBOX7[256];

extern const uint32_t DES_SPBOX8[256];

}

#endif