threefish_512.h

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/*
* Threefish-512
* (C) 2013,2014 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
 
#ifndef BOTAN_THREEFISH_512_H_
#define BOTAN_THREEFISH_512_H_
 
#include <botan/block_cipher.h>
 
namespace Botan {
 
/**
* Threefish-512
*/
class Threefish_512 final :
   public Block_Cipher_Fixed_Params<64, 64, 0, 1, Tweakable_Block_Cipher>
   {
   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 set_tweak(const uint8_t tweak[], size_t len) override;
 
      void clear() override;
      std::string name() const override { return "Threefish-512"; }
      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<Threefish_512>(); }
      bool has_keying_material() const override;
 
   private:
      void key_schedule(const uint8_t key[], size_t key_len) override;
 
      // Interface for Skein
      friend class Skein_512;
 
      void skein_feedfwd(const secure_vector<uint64_t>& M,
                         const secure_vector<uint64_t>& T);
 
      // Private data
      secure_vector<uint64_t> m_T;
      secure_vector<uint64_t> m_K;
   };
 
}
 
#endif