diff --git a/common/rfb/SSecurityTLSBase.h b/common/rfb/SSecurityTLSBase.h
new file mode 100644
index 0000000..4daad21
--- /dev/null
+++ b/common/rfb/SSecurityTLSBase.h
@@ -0,0 +1,62 @@
+/* 
+ * Copyright (C) 2004 Red Hat Inc.
+ * Copyright (C) 2005 Martin Koegler
+ * Copyright (C) 2010 TigerVNC Team
+ *    
+ * This is free software; 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.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#ifndef __S_SECURITY_TLSBASE_H__
+#define __S_SECURITY_TLSBASE_H__
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_GNUTLS
+
+#include <rfb/SSecurity.h>
+#include <rdr/InStream.h>
+#include <rdr/OutStream.h>
+#include <gnutls/gnutls.h>
+
+namespace rfb {
+
+  class SSecurityTLSBase : public SSecurity {
+  public:
+    SSecurityTLSBase();
+    virtual ~SSecurityTLSBase();
+    virtual bool processMsg(SConnection* sc);
+    virtual const char* getUserName() const {return 0;}
+
+  protected:
+    void shutdown();
+    virtual void freeResources()=0;
+    virtual void setParams(gnutls_session session)=0;
+
+  private:
+    static void initGlobal();
+
+    gnutls_session session;
+    rdr::InStream* fis;
+    rdr::OutStream* fos;
+  };
+
+}
+
+#endif /* HAVE_GNUTLS */
+
+#endif