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/******************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtKnx module.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#ifndef QKNXCURVE25519_H
#define QKNXCURVE25519_H
#include <QtCore/qshareddata.h>
#include <QtKnx/qknxbytearray.h>
#include <QtKnx/qtknxglobal.h>
#include <QtKnx/qknxnetipframe.h>
QT_BEGIN_NAMESPACE
class QKnxCurve25519KeyData;
class QKnxCurve25519PrivateKey;
class Q_KNX_EXPORT QKnxCurve25519PublicKey final
{
public:
QKnxCurve25519PublicKey();
~QKnxCurve25519PublicKey();
QKnxCurve25519PublicKey(const QKnxCurve25519PrivateKey &key);
bool isNull() const;
bool isValid() const;
QKnxByteArray bytes() const;
static QKnxCurve25519PublicKey fromBytes(const QKnxByteArray &data, quint16 index = 0);
QKnxCurve25519PublicKey(const QKnxCurve25519PublicKey &other);
QKnxCurve25519PublicKey &operator=(const QKnxCurve25519PublicKey &other);
private:
friend class QKnxCryptographicEngine;
QSharedDataPointer<QKnxCurve25519KeyData> d_ptr;
};
class Q_KNX_EXPORT QKnxCurve25519PrivateKey final
{
public:
QKnxCurve25519PrivateKey();
~QKnxCurve25519PrivateKey();
bool isNull() const;
bool isValid() const;
QKnxByteArray bytes() const;
static QKnxCurve25519PrivateKey fromBytes(const QKnxByteArray &data, quint16 index = 0);
QKnxCurve25519PrivateKey(const QKnxCurve25519PrivateKey &other);
QKnxCurve25519PrivateKey &operator=(const QKnxCurve25519PrivateKey &other);
private:
friend class QKnxCurve25519PublicKey;
friend class QKnxCryptographicEngine;
QSharedDataPointer<QKnxCurve25519KeyData> d_ptr;
};
class Q_KNX_EXPORT QKnxCryptographicEngine final
{
public:
QKnxCryptographicEngine() = delete;
~QKnxCryptographicEngine() = default;
static QKnxByteArray sharedSecret(const QKnxCurve25519PublicKey &pub,
const QKnxCurve25519PrivateKey &priv);
static QKnxByteArray sessionKey(const QKnxByteArray &sharedSecret);
static QKnxByteArray sessionKey(const QKnxCurve25519PublicKey &pub,
const QKnxCurve25519PrivateKey &priv);
static QKnxByteArray userPasswordHash(const QByteArray &password);
static QKnxByteArray deviceAuthenticationCodeHash(const QByteArray &password);
static QKnxByteArray XOR(const QKnxByteArray &l, const QKnxByteArray &r, bool adjust = true);
static QKnxByteArray calculateMessageAuthenticationCode(const QKnxByteArray &key,
const QKnxNetIpFrameHeader &header,
quint16 id,
const QKnxByteArray &data,
quint48 sequenceNumber = 0,
const QKnxByteArray &serialNumber = {},
quint16 messageTag = 0);
static QKnxByteArray encryptSecureWrapperPayload(const QKnxByteArray &key,
const QKnxNetIpFrame &frame,
quint48 sequenceNumber,
const QKnxByteArray &serialNumber,
quint16 messageTag);
static QKnxByteArray decryptSecureWrapperPayload(const QKnxByteArray &key,
const QKnxByteArray &frame,
quint48 sequenceNumber,
const QKnxByteArray &serialNumber,
quint16 messageTag);
static QKnxByteArray encryptMessageAuthenticationCode(const QKnxByteArray &key,
const QKnxByteArray &mac,
quint48 sequenceNumber = 0,
const QKnxByteArray &serialNumber = {},
quint16 messageTag = 0);
static QKnxByteArray decryptMessageAuthenticationCode(const QKnxByteArray &key,
const QKnxByteArray &data,
quint48 sequenceNumber = 0,
const QKnxByteArray &serialNumber = {},
quint16 messageTag = 0);
static QKnxByteArray pkcs5Pbkdf2HmacSha256(const QByteArray &password, const QKnxByteArray &salt,
qint32 iterations, quint8 derivedKeyLength);
};
QT_END_NAMESPACE
#endif
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