QXmpp: QXmppFileEncryption.h Source File

QXmpp Version: 1.14.3

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QXmppFileEncryption.h
1// SPDX-FileCopyrightText: 2022 Linus Jahn <lnj@kaidan.im>
2//
3// SPDX-License-Identifier: LGPL-2.1-or-later
4
5#ifndef QXMPPFILEENCRYPTION_H
6#define QXMPPFILEENCRYPTION_H
7
8#include "QXmppGlobal.h"
9
10#include <memory>
11
12#include <QIODevice>
13
14namespace QCA {
15class Cipher;
16class Initializer;
17} // namespace QCA
18
19namespace QXmpp::Private::Encryption {
20
21enum Direction {
22 Encode,
23 Decode,
24};
25
26QXMPP_EXPORT bool isSupported(Cipher);
27QXMPP_EXPORT QByteArray process(const QByteArray &data, Cipher cipherConfig, Direction direction, const QByteArray &key, const QByteArray &iv);
28QXMPP_EXPORT QByteArray generateKey(Cipher cipher);
29QXMPP_EXPORT QByteArray generateInitializationVector(Cipher);
30
31// export for tests
32class QXMPP_EXPORT EncryptionDevice : public QIODevice
33{
34public:
35 EncryptionDevice(std::unique_ptr<QIODevice> input, Cipher config, const QByteArray &key, const QByteArray &iv);
36 ~EncryptionDevice() override;
37
38 bool open(QIODevice::OpenMode mode) override;
39 void close() override;
40 bool isSequential() const override;
41 qint64 size() const override;
42 qint64 readData(char *data, qint64 maxlen) override;
43 qint64 writeData(const char *data, qint64 len) override;
44 bool atEnd() const override;
45
46private:
47 Cipher m_cipherConfig;
48 bool m_finalized = false;
49 std::vector<char> m_outputBuffer;
50 std::unique_ptr<QIODevice> m_input;
51 std::unique_ptr<QCA::Cipher> m_cipher;
52};
53
54class QXMPP_EXPORT DecryptionDevice : public QIODevice
55{
56public:
57 DecryptionDevice(std::unique_ptr<QIODevice> output, Cipher config, const QByteArray &key, const QByteArray &iv);
58 ~DecryptionDevice() override;
59
60 bool open(QIODevice::OpenMode mode) override;
61 void close() override;
62 bool isSequential() const override;
63 qint64 size() const override;
64 qint64 readData(char *data, qint64 maxlen) override;
65 qint64 writeData(const char *data, qint64 len) override;
66 void finish();
67
68private:
69 Cipher m_cipherConfig;
70 std::vector<char> m_outputBuffer;
71 std::unique_ptr<QIODevice> m_output;
72 std::unique_ptr<QCA::Cipher> m_cipher;
73};
74
75} // namespace QXmpp::Private::Encryption
76
77#endif // QXMPPFILEENCRYPTION_H
QXmpp::Cipher
Cipher
Definition QXmppGlobal.h:172