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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2014 Jeremy Lainé <jeremy.laine@m4x.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qtlskey_st_p.h"
#include <QtNetwork/private/qsslkey_p.h>
#include <QtCore/qbytearray.h>
#include <CommonCrypto/CommonCrypto.h>
#include <cstddef>
QT_BEGIN_NAMESPACE
namespace QTlsPrivate {
namespace {
// Before this code was located in qsslkey_mac.cpp.
QByteArray wrapCCCrypt(CCOperation ccOp, QSslKeyPrivate::Cipher cipher,
const QByteArray &data, const QByteArray &key,
const QByteArray &iv)
{
int blockSize = {};
CCAlgorithm ccAlgorithm = {};
switch (cipher) {
case Cipher::DesCbc:
blockSize = kCCBlockSizeDES;
ccAlgorithm = kCCAlgorithmDES;
break;
case Cipher::DesEde3Cbc:
blockSize = kCCBlockSize3DES;
ccAlgorithm = kCCAlgorithm3DES;
break;
case Cipher::Rc2Cbc:
blockSize = kCCBlockSizeRC2;
ccAlgorithm = kCCAlgorithmRC2;
break;
case Cipher::Aes128Cbc:
case Cipher::Aes192Cbc:
case Cipher::Aes256Cbc:
blockSize = kCCBlockSizeAES128;
ccAlgorithm = kCCAlgorithmAES;
break;
}
std::size_t plainLength = 0;
QByteArray plain(data.size() + blockSize, 0);
CCCryptorStatus status = CCCrypt(ccOp, ccAlgorithm, kCCOptionPKCS7Padding,
key.constData(), std::size_t(key.size()),
iv.constData(), data.constData(), std::size_t(data.size()),
plain.data(), std::size_t(plain.size()), &plainLength);
if (status == kCCSuccess)
return plain.left(int(plainLength));
return {};
}
} // Unnamed namespace.
QByteArray TlsKeySecureTransport::decrypt(Cipher cipher, const QByteArray &data,
const QByteArray &key, const QByteArray &iv) const
{
return wrapCCCrypt(kCCDecrypt, cipher, data, key, iv);
}
QByteArray TlsKeySecureTransport::encrypt(Cipher cipher, const QByteArray &data,
const QByteArray &key, const QByteArray &iv) const
{
return wrapCCCrypt(kCCEncrypt, cipher, data, key, iv);
}
} // namespace QTlsPrivate
QT_END_NAMESPACE
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