mirror of
https://github.com/keepassxreboot/keepassxc.git
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89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/*
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* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 or (at your option)
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* version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "SymmetricCipherSalsa20.h"
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SymmetricCipherSalsa20::~SymmetricCipherSalsa20()
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{
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}
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void SymmetricCipherSalsa20::setAlgorithm(SymmetricCipher::Algorithm algo)
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{
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Q_ASSERT(algo == SymmetricCipher::Salsa20);
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}
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void SymmetricCipherSalsa20::setMode(SymmetricCipher::Mode mode)
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{
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Q_ASSERT(mode == SymmetricCipher::Stream);
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}
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void SymmetricCipherSalsa20::setDirection(SymmetricCipher::Direction direction)
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{
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Q_UNUSED(direction);
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}
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void SymmetricCipherSalsa20::init()
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{
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}
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void SymmetricCipherSalsa20::setKey(const QByteArray& key)
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{
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Q_ASSERT( (key.size() == 16) || (key.size() == 32) );
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m_key = key;
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ECRYPT_keysetup(&m_ctx, reinterpret_cast<const u8*>(m_key.constData()), m_key.size()*8, 64);
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}
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void SymmetricCipherSalsa20::setIv(const QByteArray& iv)
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{
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Q_ASSERT(iv.size() == 8);
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m_iv = iv;
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ECRYPT_ivsetup(&m_ctx, reinterpret_cast<const u8*>(m_iv.constData()));
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}
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QByteArray SymmetricCipherSalsa20::process(const QByteArray& data)
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{
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Q_ASSERT( (data.size() < blockSize()) || ((data.size() % blockSize())==0) );
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QByteArray result;
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result.resize(data.size());
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ECRYPT_encrypt_bytes(&m_ctx, reinterpret_cast<const u8*>(data.constData()),
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reinterpret_cast<u8*>(result.data()), data.size());
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return result;
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}
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void SymmetricCipherSalsa20::processInPlace(QByteArray& data)
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{
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Q_ASSERT( (data.size() < blockSize()) || ((data.size() % blockSize())==0) );
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ECRYPT_encrypt_bytes(&m_ctx, reinterpret_cast<const u8*>(data.constData()),
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reinterpret_cast<u8*>(data.data()), data.size());
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}
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void SymmetricCipherSalsa20::reset()
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{
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ECRYPT_ivsetup(&m_ctx, reinterpret_cast<const u8*>(m_iv.constData()));
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}
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int SymmetricCipherSalsa20::blockSize() const
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{
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return 64;
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}
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