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/*
* Threefish
* (C) 2013,2014 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_THREEFISH_H__
#define BOTAN_THREEFISH_H__
#include <botan/block_cipher.h>
namespace Botan {
/**
* Threefish-512
*/
class BOTAN_DLL Threefish_512 : public Block_Cipher_Fixed_Params<64, 64>
{
public:
void encrypt_n(const byte in[], byte out[], size_t blocks) const override;
void decrypt_n(const byte in[], byte out[], size_t blocks) const override;
void set_tweak(const byte tweak[], size_t len);
void clear() override;
std::string name() const override { return "Threefish-512"; }
BlockCipher* clone() const override { return new Threefish_512; }
Threefish_512() : m_T(3) {}
protected:
const secure_vector<u64bit>& get_T() const { return m_T; }
const secure_vector<u64bit>& get_K() const { return m_K; }
private:
void key_schedule(const byte key[], size_t key_len) override;
// Interface for Skein
friend class Skein_512;
virtual void skein_feedfwd(const secure_vector<u64bit>& M,
const secure_vector<u64bit>& T);
// Private data
secure_vector<u64bit> m_T;
secure_vector<u64bit> m_K;
};
}
#endif
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