/*
*  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/>.
*/

#include "SymmetricCipher.h"

#include "SymmetricCipherGcrypt.h"
#include "SymmetricCipherSalsa20.h"

SymmetricCipher::SymmetricCipher(SymmetricCipher::Algorithm algo, SymmetricCipher::Mode mode,
                                 SymmetricCipher::Direction direction, const QByteArray& key, const QByteArray& iv)
{
    switch (algo) {
    case SymmetricCipher::Aes256:
        m_backend = new SymmetricCipherGcrypt();
        break;

    case SymmetricCipher::Salsa20:
        m_backend = new SymmetricCipherSalsa20();
        break;

    default:
        Q_ASSERT(false);
        break;
    }

    m_backend->setAlgorithm(algo);
    m_backend->setMode(mode);
    m_backend->setDirection(direction);
    m_backend->init();
    m_backend->setKey(key);
    m_backend->setIv(iv);
}

SymmetricCipher::~SymmetricCipher()
{
    delete m_backend;
}

QByteArray SymmetricCipher::process(const QByteArray& data)
{
    return m_backend->process(data);
}

void SymmetricCipher::processInPlace(QByteArray& data)
{
    m_backend->processInPlace(data);
}

void SymmetricCipher::reset()
{
    m_backend->reset();
}

int SymmetricCipher::blockSize() const
{
    return m_backend->blockSize();
}