Initial commit

Lts/Plugins/ProjectionWorkstation/Common/pws_des_encryption.h

@@ -0,0 +1,41 @@
+/**
+ * @RDE_HEADER@
+ * $Id$
+ * $HeadURL$
+ * $Author$
+ */
+#pragma once
+
+#include <QtGlobal>
+#include "pwscommon_export.h"
+
+namespace ProjectionWorkstation
+{
+
+class PWSCOMMON_EXPORT DES
+{
+public:
+  explicit DES(quint64 key);
+
+  quint64 des(quint64 block, bool mode);
+
+  quint64 encrypt(quint64 block);
+  quint64 decrypt(quint64 block);
+
+  static quint64 encrypt(quint64 block, quint64 key);
+  static quint64 decrypt(quint64 block, quint64 key);
+
+protected:
+  void keygen(quint64 key);
+
+  static quint64 ip(quint64 block);
+  static quint64 fp(quint64 block);
+
+  static void feistel(quint32 &L, quint32 &R, quint32 F);
+  static quint32 f(quint32 R, quint64 k);
+
+private:
+  quint64 m_subKey[16]; // 48 bits each
+};
+
+} // ProjectionWorkstation