Dooble
dooble_cryptography.h
1 /*
2 ** Copyright (c) 2008 - present, Alexis Megas.
3 ** All rights reserved.
4 **
5 ** Redistribution and use in source and binary forms, with or without
6 ** modification, are permitted provided that the following conditions
7 ** are met:
8 ** 1. Redistributions of source code must retain the above copyright
9 ** notice, this list of conditions and the following disclaimer.
10 ** 2. Redistributions in binary form must reproduce the above copyright
11 ** notice, this list of conditions and the following disclaimer in the
12 ** documentation and/or other materials provided with the distribution.
13 ** 3. The name of the author may not be used to endorse or promote products
14 ** derived from Dooble without specific prior written permission.
15 **
16 ** DOOBLE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 ** DOOBLE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27 
28 #ifndef dooble_cryptography_h
29 #define dooble_cryptography_h
30 
31 #include <QByteArray>
32 #include <QObject>
33 #include <QPair>
34 
35 class dooble_cryptography: public QObject
36 {
37  Q_OBJECT
38 
39  public:
40  static int s_authentication_key_length;
41  static int s_encryption_key_length;
42  dooble_cryptography(const QByteArray &authentication_key,
43  const QByteArray &encryption_key,
44  const QString &block_cipher_type);
45  dooble_cryptography(const QString &block_cipher_type);
47  QByteArray encrypt_then_mac(const QByteArray &data) const;
48  QByteArray hmac(const QByteArray &message) const;
49  QByteArray hmac(const QString &message) const;
50  QByteArray mac_then_decrypt(const QByteArray &data) const;
51  QPair<QByteArray, QByteArray> keys(void) const;
52  bool as_plaintext(void) const;
53  bool authenticated(void) const;
54  static bool memcmp(const QByteArray &a, const QByteArray &b);
55  static void memzero(QByteArray &bytes);
56  static void memzero(QString &text);
57  void authenticate(const QByteArray &salt,
58  const QByteArray &salted_password,
59  const QString &password);
60  void set_authenticated(bool state);
61  void set_block_cipher_type(const QString &block_cipher_type);
62  void set_keys(const QByteArray &authentication_key,
63  const QByteArray &encryption_key);
64 
65  private:
66  QByteArray m_authentication_key;
67  QByteArray m_encryption_key;
68  QString m_block_cipher_type;
69  bool m_as_plaintext;
70  bool m_authenticated;
71 };
72 
73 #endif
Definition: dooble_cryptography.h:35