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diff --git a/src/libcharon/sa/tasks/ike_auth.h b/src/libcharon/sa/tasks/ike_auth.h
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+++ b/src/libcharon/sa/tasks/ike_auth.h
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+/*
+ * Copyright (C) 2007 Martin Willi
+ * 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.
+ */
+
+/**
+ * @defgroup ike_auth ike_auth
+ * @{ @ingroup tasks
+ */
+
+#ifndef IKE_AUTH_H_
+#define IKE_AUTH_H_
+
+typedef struct ike_auth_t ike_auth_t;
+
+#include <library.h>
+#include <sa/ike_sa.h>
+#include <sa/tasks/task.h>
+
+/**
+ * Task of type ike_auth, authenticates an IKE_SA using authenticators.
+ *
+ * The ike_auth task authenticates the IKE_SA using the IKE_AUTH
+ * exchange. It processes and build IDi and IDr payloads and also
+ * handles AUTH payloads. The AUTH payloads are passed to authenticator_t's,
+ * which do the actual authentication process. If the ike_auth task is used
+ * with EAP authentication, it stays alive over multiple exchanges until
+ * EAP has completed.
+ */
+struct ike_auth_t {
+
+	/**
+	 * Implements the task_t interface
+	 */
+	task_t task;
+};
+
+/**
+ * Create a new task of type IKE_AUTHENTICATE.
+ *
+ * @param ike_sa		IKE_SA this task works for
+ * @param initiator		TRUE if thask is the initator of an exchange
+ * @return				ike_auth task to handle by the task_manager
+ */
+ike_auth_t *ike_auth_create(ike_sa_t *ike_sa, bool initiator);
+
+#endif /** IKE_AUTH_H_ @}*/