diff --git a/src/charon-tkm/src/tkm/tkm_listener.c b/src/charon-tkm/src/tkm/tkm_listener.c
new file mode 100644
index 000000000..ee8fb4925
--- /dev/null
+++ b/src/charon-tkm/src/tkm/tkm_listener.c
@@ -0,0 +1,77 @@
+/*
+ * Copyrigth (C) 2012 Reto Buerki
+ * Copyright (C) 2012 Adrian-Ken Rueegsegger
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program 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.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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.
+ */
+
+#include <daemon.h>
+#include <tkm/types.h>
+
+#include "tkm_listener.h"
+#include "tkm_keymat.h"
+
+typedef struct private_tkm_listener_t private_tkm_listener_t;
+
+/**
+ * Private data of a tkm_listener_t object.
+ */
+struct private_tkm_listener_t {
+
+	/**
+	 * Public tkm_listener_t interface.
+	 */
+	tkm_listener_t public;
+
+};
+
+METHOD(listener_t, authorize, bool,
+	private_tkm_listener_t *this, ike_sa_t *ike_sa,
+	bool final, bool *success)
+{
+	if (!final)
+	{
+		return TRUE;
+	}
+
+	tkm_keymat_t * const keymat = (tkm_keymat_t*)ike_sa->get_keymat(ike_sa);
+	const isa_id_type isa_id = keymat->get_isa_id(keymat);
+	DBG1(DBG_IKE, "TKM authorize listener called for ISA context %llu", isa_id);
+
+	*success = TRUE;
+	return TRUE;
+}
+
+METHOD(tkm_listener_t, destroy, void,
+	private_tkm_listener_t *this)
+{
+	free(this);
+}
+
+/**
+ * See header
+ */
+tkm_listener_t *tkm_listener_create()
+{
+	private_tkm_listener_t *this;
+
+	INIT(this,
+		.public = {
+			.listener = {
+				.authorize = _authorize,
+			},
+			.destroy = _destroy,
+		},
+	);
+
+	return &this->public;
+}
diff --git a/src/charon-tkm/src/tkm/tkm_listener.h b/src/charon-tkm/src/tkm/tkm_listener.h
new file mode 100644
index 000000000..262d66e33
--- /dev/null
+++ b/src/charon-tkm/src/tkm/tkm_listener.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2012 Reto Buerki
+ * Copyright (C) 2012 Adrian-Ken Rueegsegger
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program 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.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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.
+ */
+
+#ifndef TKM_LISTENER_H_
+#define TKM_LISTENER_H_
+
+#include <bus/listeners/listener.h>
+
+typedef struct tkm_listener_t tkm_listener_t;
+
+/**
+ * TKM bus listener.
+ */
+struct tkm_listener_t {
+
+	/**
+	 * Implements listener_t interface.
+	 */
+	listener_t listener;
+
+	/**
+	 * Destroy a tkm_listener_t.
+	 */
+	void (*destroy)(tkm_listener_t *this);
+};
+
+/**
+ * Create a tkm_listener instance.
+ *
+ * @return		listener instance
+ */
+tkm_listener_t *tkm_listener_create();
+
+#endif /** TKM_LISTENER_H_ */