mirror of
https://github.com/keepassxreboot/keepassxc.git
synced 2024-10-01 01:26:01 -04:00
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
/*
|
|
* 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 "SymmetricCipherSalsa20.h"
|
|
|
|
SymmetricCipherSalsa20::SymmetricCipherSalsa20(SymmetricCipher::Algorithm algo, SymmetricCipher::Mode mode,
|
|
SymmetricCipher::Direction direction)
|
|
{
|
|
Q_ASSERT(algo == SymmetricCipher::Salsa20);
|
|
Q_UNUSED(algo);
|
|
|
|
Q_ASSERT(mode == SymmetricCipher::Stream);
|
|
Q_UNUSED(mode);
|
|
|
|
Q_UNUSED(direction);
|
|
}
|
|
|
|
SymmetricCipherSalsa20::~SymmetricCipherSalsa20()
|
|
{
|
|
}
|
|
|
|
void SymmetricCipherSalsa20::setKey(const QByteArray& key)
|
|
{
|
|
Q_ASSERT((key.size() == 16) || (key.size() == 32));
|
|
|
|
m_key = key;
|
|
ECRYPT_keysetup(&m_ctx, reinterpret_cast<const u8*>(m_key.constData()), m_key.size()*8, 64);
|
|
}
|
|
|
|
void SymmetricCipherSalsa20::setIv(const QByteArray& iv)
|
|
{
|
|
Q_ASSERT(iv.size() == 8);
|
|
|
|
m_iv = iv;
|
|
ECRYPT_ivsetup(&m_ctx, reinterpret_cast<const u8*>(m_iv.constData()));
|
|
}
|
|
|
|
QByteArray SymmetricCipherSalsa20::process(const QByteArray& data)
|
|
{
|
|
Q_ASSERT((data.size() < blockSize()) || ((data.size() % blockSize()) == 0));
|
|
|
|
QByteArray result;
|
|
result.resize(data.size());
|
|
|
|
ECRYPT_encrypt_bytes(&m_ctx, reinterpret_cast<const u8*>(data.constData()),
|
|
reinterpret_cast<u8*>(result.data()), data.size());
|
|
|
|
return result;
|
|
}
|
|
|
|
void SymmetricCipherSalsa20::processInPlace(QByteArray& data)
|
|
{
|
|
Q_ASSERT((data.size() < blockSize()) || ((data.size() % blockSize()) == 0));
|
|
|
|
ECRYPT_encrypt_bytes(&m_ctx, reinterpret_cast<const u8*>(data.constData()),
|
|
reinterpret_cast<u8*>(data.data()), data.size());
|
|
}
|
|
|
|
void SymmetricCipherSalsa20::processInPlace(QByteArray& data, quint64 rounds)
|
|
{
|
|
Q_ASSERT((data.size() < blockSize()) || ((data.size() % blockSize()) == 0));
|
|
|
|
for (quint64 i = 0; i != rounds; ++i) {
|
|
ECRYPT_encrypt_bytes(&m_ctx, reinterpret_cast<const u8*>(data.constData()),
|
|
reinterpret_cast<u8*>(data.data()), data.size());
|
|
}
|
|
}
|
|
|
|
void SymmetricCipherSalsa20::reset()
|
|
{
|
|
ECRYPT_ivsetup(&m_ctx, reinterpret_cast<const u8*>(m_iv.constData()));
|
|
}
|
|
|
|
int SymmetricCipherSalsa20::blockSize() const
|
|
{
|
|
return 64;
|
|
}
|