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/*************************************************
* AES Header File *
* (C) 1999-2006 The Botan Project *
*************************************************/
#ifndef BOTAN_AES_H__
#define BOTAN_AES_H__
#include <botan/base.h>
namespace Botan {
/*************************************************
* AES *
*************************************************/
class AES : public BlockCipher
{
public:
void clear() throw();
std::string name() const { return "AES"; }
BlockCipher* clone() const { return new AES; }
AES() : BlockCipher(16, 16, 32, 8) { ROUNDS = 14; }
AES(u32bit);
private:
void enc(const byte[], byte[]) const;
void dec(const byte[], byte[]) const;
void key(const byte[], u32bit);
static u32bit S(u32bit);
static const byte SE[256], SD[256];
static const u32bit TE0[256], TE1[256], TE2[256], TE3[256],
TD0[256], TD1[256], TD2[256], TD3[256];
SecureBuffer<u32bit, 52> EK, DK;
SecureBuffer<byte, 32> ME, MD;
u32bit ROUNDS;
};
/*************************************************
* AES-128 *
*************************************************/
class AES_128 : public AES
{
public:
std::string name() const { return "AES-128"; }
BlockCipher* clone() const { return new AES_128; }
AES_128() : AES(16) {}
};
/*************************************************
* AES-192 *
*************************************************/
class AES_192 : public AES
{
public:
std::string name() const { return "AES-192"; }
BlockCipher* clone() const { return new AES_192; }
AES_192() : AES(24) {}
};
/*************************************************
* AES-256 *
*************************************************/
class AES_256 : public AES
{
public:
std::string name() const { return "AES-256"; }
BlockCipher* clone() const { return new AES_256; }
AES_256() : AES(32) {}
};
}
#endif
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