Clean-up and refactor the blowfish encryption stuff

[quassel.git] / src / core / cipher.h

diff --git a/src/core/cipher.h b/src/core/cipher.h
new file mode 100644 (file)
index 0000000..b5cf0e0
--- /dev/null
+++ b/src/core/cipher.h
@@ -0,0 +1,51 @@
+/*
+  This file has been derived from Konversation, the KDE IRC client.
+  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 of the License, or (at your option) any later version.
+*/
+
+/*
+  Copyright (C) 1997 Robey Pointer <robeypointer@gmail.com>
+  Copyright (C) 2005 Ismail Donmez <ismail@kde.org>
+  Copyright (C) 2009 Travis McHenry <tmchenryaz@cox.net>
+  Copyright (C) 2009 Johannes Huber <johu@gmx.de>
+*/
+
+#ifndef CIPHER_H
+#define CIPHER_H
+
+#include<QtCrypto>
+
+class Cipher
+{
+  public:
+    Cipher();
+    explicit Cipher(QByteArray key, QString cipherType=QString("blowfish"));
+    ~Cipher();
+    QByteArray decrypt(QByteArray cipher);
+    QByteArray decryptTopic(QByteArray cipher);
+    bool encrypt(QByteArray& cipher);
+    QByteArray initKeyExchange();
+    QByteArray parseInitKeyX(QByteArray key);
+    bool parseFinishKeyX(QByteArray key);
+    bool setKey(QByteArray key);
+    QByteArray key() { return m_key; }
+    bool setType(const QString &type);
+    QString type() { return m_type; }
+
+  private:
+    //direction is true for encrypt, false for decrypt
+    QByteArray blowfishCBC(QByteArray cipherText, bool direction);
+    QByteArray blowfishECB(QByteArray cipherText, bool direction);
+    QByteArray b64ToByte(QByteArray text);
+    QByteArray byteToB64(QByteArray text);
+
+    QCA::Initializer init;
+    QByteArray m_key;
+    QCA::DHPrivateKey m_tempKey;
+    QCA::BigInteger m_primeNum;
+    QString m_type;
+    bool m_cbc;
+};
+#endif // CIPHER_H