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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_KEEPASS2RANDOMSTREAM_H
#define KEEPASSX_KEEPASS2RANDOMSTREAM_H
#include <QByteArray>
#include "crypto/SymmetricCipher.h"
#include "KeePass2.h"
class KeePass2RandomStream
{
public:
KeePass2RandomStream(KeePass2::ProtectedStreamAlgo algo);
bool init(const QByteArray& key);
QByteArray randomBytes(int size, bool* ok);
QByteArray process(const QByteArray& data, bool* ok);
Q_REQUIRED_RESULT bool processInPlace(QByteArray& data);
QString errorString() const;
private:
bool loadBlock();
SymmetricCipher m_cipher;
QByteArray m_buffer;
int m_offset;
static SymmetricCipher::Algorithm mapAlgo(KeePass2::ProtectedStreamAlgo algo);
};
#endif // KEEPASSX_KEEPASS2RANDOMSTREAM_H
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