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/*
* Threefish
* (C) 2013 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_THREEFISH_H__
#define BOTAN_THREEFISH_H__
#include <botan/transform.h>
namespace Botan {
/**
* Threefish-512
*/
class BOTAN_DLL Threefish_512 : public Transformation
{
public:
secure_vector<byte> start(const byte tweak[], size_t tweak_len) override;
void update(secure_vector<byte>& blocks, size_t offset) override;
void finish(secure_vector<byte>& final_block, size_t offset) override;
size_t output_length(size_t input_length) const override;
size_t update_granularity() const override;
size_t minimum_final_size() const override;
size_t default_nonce_size() const override;
bool valid_nonce_length(size_t nonce_len) const override;
Key_Length_Specification key_spec() const override;
std::string name() const { return "Threefish-512"; }
void clear();
private:
void key_schedule(const byte key[], size_t key_len) override;
secure_vector<u64bit> m_T;
secure_vector<u64bit> m_K;
};
}
#endif
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