diff --git a/common/rfb/SSecurityTLS.cxx b/common/rfb/SSecurityTLS.cxx
new file mode 100644
index 0000000..f54158e
--- /dev/null
+++ b/common/rfb/SSecurityTLS.cxx
@@ -0,0 +1,82 @@
+/* 
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_GNUTLS
+
+#include <rfb/SSecurityTLS.h>
+#include <rfb/Exception.h>
+
+#define DH_BITS 1024
+
+#undef TLS_DEBUG
+
+using namespace rfb;
+
+SSecurityTLS::SSecurityTLS() : dh_params(0), anon_cred(0)
+{
+}
+
+SSecurityTLS::~SSecurityTLS()
+{
+  shutdown();
+  if (dh_params)
+    gnutls_dh_params_deinit(dh_params);
+  if (anon_cred)
+    gnutls_anon_free_server_credentials(anon_cred);
+}
+
+void SSecurityTLS::freeResources()
+{
+  if (dh_params)
+    gnutls_dh_params_deinit(dh_params);
+  dh_params = 0;
+  if (anon_cred)
+    gnutls_anon_free_server_credentials(anon_cred);
+  anon_cred = 0;
+}
+
+void SSecurityTLS::setParams(gnutls_session session)
+{
+  static const int kx_priority[] = {GNUTLS_KX_ANON_DH, 0};
+  gnutls_kx_set_priority(session, kx_priority);
+
+  if (gnutls_anon_allocate_server_credentials(&anon_cred) != GNUTLS_E_SUCCESS)
+    throw AuthFailureException("gnutls_anon_allocate_server_credentials failed");
+
+  if (gnutls_dh_params_init(&dh_params) != GNUTLS_E_SUCCESS)
+    throw AuthFailureException("gnutls_dh_params_init failed");
+
+  if (gnutls_dh_params_generate2(dh_params, DH_BITS) != GNUTLS_E_SUCCESS)
+    throw AuthFailureException("gnutls_dh_params_generate2 failed");
+
+  gnutls_anon_set_server_dh_params(anon_cred, dh_params);
+
+  if (gnutls_credentials_set(session, GNUTLS_CRD_ANON, anon_cred) 
+    != GNUTLS_E_SUCCESS)
+    throw AuthFailureException("gnutls_credentials_set failed");
+
+}
+
+#endif /* HAVE_GNUTLS */