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/*
* Square
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_SQUARE_H__
#define BOTAN_SQUARE_H__
#include <botan/block_cipher.h>
namespace Botan {
/**
* Square
*/
class BOTAN_DLL Square : public BlockCipher_Fixed_Block_Size<16>
{
public:
void encrypt_n(const byte in[], byte out[], size_t blocks) const;
void decrypt_n(const byte in[], byte out[], size_t blocks) const;
void clear();
std::string name() const { return "Square"; }
BlockCipher* clone() const { return new Square; }
Square() : BlockCipher_Fixed_Block_Size(16),
EK(28), DK(28), ME(32), MD(32) {}
private:
void key_schedule(const byte[], size_t);
static void transform(u32bit[4]);
static const byte SE[256];
static const byte SD[256];
static const byte Log[256];
static const byte ALog[255];
static const u32bit TE0[256];
static const u32bit TE1[256];
static const u32bit TE2[256];
static const u32bit TE3[256];
static const u32bit TD0[256];
static const u32bit TD1[256];
static const u32bit TD2[256];
static const u32bit TD3[256];
SecureVector<u32bit> EK, DK;
SecureVector<byte> ME, MD;
};
}
#endif
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