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/*
* Twofish
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_TWOFISH_H_
#define BOTAN_TWOFISH_H_
#include <botan/block_cipher.h>
namespace Botan {
/**
* Twofish, an AES finalist
*/
class BOTAN_PUBLIC_API(2,0) Twofish final : public Block_Cipher_Fixed_Params<16, 16, 32, 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 "Twofish"; }
BlockCipher* clone() const override { return new Twofish; }
private:
void key_schedule(const uint8_t[], size_t) override;
static const uint32_t MDS0[256];
static const uint32_t MDS1[256];
static const uint32_t MDS2[256];
static const uint32_t MDS3[256];
static const uint8_t Q0[256];
static const uint8_t Q1[256];
static const uint8_t RS[32];
static const uint8_t EXP_TO_POLY[255];
static const uint8_t POLY_TO_EXP[255];
secure_vector<uint32_t> m_SB, m_RK;
};
}
#endif
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