/usr/include/botan/twofish.h is in libbotan1.8-dev 1.8.13-4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | /*
* Twofish
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_TWOFISH_H__
#define BOTAN_TWOFISH_H__
#include <botan/block_cipher.h>
namespace Botan {
/*
* Twofish
*/
class BOTAN_DLL Twofish : public BlockCipher
{
public:
void clear() throw();
std::string name() const { return "Twofish"; }
BlockCipher* clone() const { return new Twofish; }
Twofish() : BlockCipher(16, 16, 32, 8) {}
private:
void enc(const byte[], byte[]) const;
void dec(const byte[], byte[]) const;
void key_schedule(const byte[], u32bit);
static void rs_mul(byte[4], byte, u32bit);
static const u32bit MDS0[256];
static const u32bit MDS1[256];
static const u32bit MDS2[256];
static const u32bit MDS3[256];
static const byte Q0[256];
static const byte Q1[256];
static const byte RS[32];
static const byte EXP_TO_POLY[255];
static const byte POLY_TO_EXP[255];
SecureBuffer<u32bit, 256> SBox0, SBox1, SBox2, SBox3;
SecureBuffer<u32bit, 40> round_key;
};
}
#endif
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