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#ifndef QBLOWFISH_H
#define QBLOWFISH_H
#include <QByteArray>
class QBlowfish
{
public:
QBlowfish(const QByteArray &key);
bool init();
// Padding:
//
// Blowfish works on 8-byte blocks. Padding makes it usable even
// in case where the input size is not in exact 8-byte blocks.
//
// If padding is disabled (the default), encrypted() will work only if the
// input size (in bytes) is a multiple of 8. (If it's not a multiple of 8,
// encrypted() will return a null bytearray.)
//
// If padding is enabled, we increase the input length to a multiple of 8
// by padding bytes as per PKCS5
//
// If padding was enabled during encryption, it should be enabled during
// decryption for correct decryption (and vice versa).
void setPaddingEnabled(bool enabled);
bool isPaddingEnabled() const;
// Encrypt / decrypt
QByteArray encrypted(const QByteArray &clearText);
QByteArray decrypted(const QByteArray &cipherText);
private:
// core encrypt/decrypt methods, encrypts/decrypts in-place
void coreEncrypt(char *x);
void coreDecrypt(char *x);
QByteArray m_key;
bool m_initialized;
bool m_paddingEnabled;
QByteArray m_parray;
QByteArray m_sbox1, m_sbox2, m_sbox3, m_sbox4;
};
#endif // QBLOWFISH_H
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