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/*************************************************
* GOST Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_GOST_H__
#define BOTAN_GOST_H__
#include <botan/block_cipher.h>
namespace Botan {
/*************************************************
* GOST *
*************************************************/
class BOTAN_DLL GOST : public BlockCipher
{
public:
void clear() throw() { EK.clear(); }
std::string name() const { return "GOST"; }
BlockCipher* clone() const { return new GOST; }
GOST() : BlockCipher(8, 32) {}
private:
void enc(const byte[], byte[]) const;
void dec(const byte[], byte[]) const;
void key_schedule(const byte[], u32bit);
static const u32bit SBOX1[256];
static const u32bit SBOX2[256];
static const u32bit SBOX3[256];
static const u32bit SBOX4[256];
SecureBuffer<u32bit, 32> EK;
};
}
#endif
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