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#ifndef _RIJNDAEL_H_
#define _RIJNDAEL_H_
/**************************************************************************
* This code is based on Szymon Stefanek AES implementation: *
* http://www.esat.kuleuven.ac.be/~rijmen/rijndael/rijndael-cpplib.tar.gz *
* *
* Dynamic tables generation is based on the Brian Gladman's work: *
* http://fp.gladman.plus.com/cryptography_technology/rijndael *
**************************************************************************/
#define _MAX_KEY_COLUMNS (256/32)
#define _MAX_ROUNDS 14
#define MAX_IV_SIZE 16
class Rijndael
{
public:
enum Direction { Encrypt , Decrypt };
private:
void keySched(byte key[_MAX_KEY_COLUMNS][4]);
void keyEncToDec();
void encrypt(const byte a[16], byte b[16]);
void decrypt(const byte a[16], byte b[16]);
void GenerateTables();
Direction m_direction;
byte m_initVector[MAX_IV_SIZE];
byte m_expandedKey[_MAX_ROUNDS+1][4][4];
public:
Rijndael();
void init(Direction dir,const byte *key,byte *initVector);
int blockEncrypt(const byte *input, int inputLen, byte *outBuffer);
int blockDecrypt(const byte *input, int inputLen, byte *outBuffer);
};
#endif // _RIJNDAEL_H_
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