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/*
* MARS
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_MARS_H__
#define BOTAN_MARS_H__
#include <botan/block_cipher.h>
namespace Botan {
class BOTAN_DLL MARS : public BlockCipher
{
public:
void encrypt_n(const byte in[], byte out[], u32bit blocks) const;
void decrypt_n(const byte in[], byte out[], u32bit blocks) const;
void clear() throw() { EK.clear(); }
std::string name() const { return "MARS"; }
BlockCipher* clone() const { return new MARS; }
MARS() : BlockCipher(16, 16, 32, 4) {}
private:
void key_schedule(const byte[], u32bit);
void encrypt_round(u32bit&, u32bit&, u32bit&, u32bit&, u32bit) const;
void decrypt_round(u32bit&, u32bit&, u32bit&, u32bit&, u32bit) const;
static void forward_mix(u32bit&, u32bit&, u32bit&, u32bit&);
static void reverse_mix(u32bit&, u32bit&, u32bit&, u32bit&);
static const u32bit SBOX[512];
SecureBuffer<u32bit, 40> EK;
};
}
#endif
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