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/*
* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KEEPASSX_SYMMETRICCIPHERGCRYPT_H
#define KEEPASSX_SYMMETRICCIPHERGCRYPT_H
#include <gcrypt.h>
#include "crypto/SymmetricCipher.h"
#include "crypto/SymmetricCipherBackend.h"
class SymmetricCipherGcrypt : public SymmetricCipherBackend
{
public:
SymmetricCipherGcrypt(SymmetricCipher::Algorithm algo, SymmetricCipher::Mode mode,
SymmetricCipher::Direction direction);
~SymmetricCipherGcrypt();
bool init();
bool setKey(const QByteArray& key);
bool setIv(const QByteArray& iv);
QByteArray process(const QByteArray& data, bool* ok);
Q_REQUIRED_RESULT bool processInPlace(QByteArray& data);
Q_REQUIRED_RESULT bool processInPlace(QByteArray& data, quint64 rounds);
bool reset();
int blockSize() const;
QString errorString() const;
private:
static int gcryptAlgo(SymmetricCipher::Algorithm algo);
static int gcryptMode(SymmetricCipher::Mode mode);
void setErrorString(gcry_error_t err);
gcry_cipher_hd_t m_ctx;
const int m_algo;
const int m_mode;
const SymmetricCipher::Direction m_direction;
QByteArray m_key;
QByteArray m_iv;
int m_blockSize;
QString m_errorString;
};
#endif // KEEPASSX_SYMMETRICCIPHERGCRYPT_H
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