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diff --git a/Source/charon/ike_sa.h b/Source/charon/ike_sa.h
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+++ b/Source/charon/ike_sa.h
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+/**
+ * @file ike_sa.h
+ * 
+ * @brief Class ike_sa_t. An object of this type is managed by an
+ * ike_sa_manager_t-object and represents an IKE_SA
+ * 
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, 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.
+ */
+
+#ifndef IKE_SA_H_
+#define IKE_SA_H_
+
+#include "types.h"
+#include "message.h"
+#include "configuration.h"
+#include "ike_sa_id.h"
+
+/**
+ * @brief This class is used to represent an IKE_SA
+ * 
+ */
+typedef struct ike_sa_s ike_sa_t;
+
+struct ike_sa_s { 	
+
+	/**
+	 * @brief Processes a incoming IKEv2-Message of type message_t
+	 * 
+	 * @param this ike_sa_t-object object
+ 	 * @param[in] message message_t-object to process
+	 * @return SUCCESSFUL if succeeded, FAILED otherwise
+	 */
+	status_t (*process_message) (ike_sa_t *this,message_t *message);
+
+	/**
+	 * @brief Processes a specific configuration
+	 * 
+	 * This function is called when a new IKE_SA is created
+	 * 
+	 * @param this ike_sa_t-message_t object object
+ 	 * @param[in] message message_t-object to process
+	 * @return SUCCESSFUL if succeeded, FAILED otherwise
+	 */
+	status_t (*process_configuration) (ike_sa_t *this,configuration_t *configuration);
+
+	/**
+	 * @brief Destroys a ike_sa_t object
+	 * 
+	 * @param this ike_sa_t object
+	 * @return SUCCESSFUL if succeeded, FAILED otherwise
+	 */
+	status_t (*destroy) (ike_sa_t *this);
+};
+
+/**
+ * Creates an ike_sa_t-object with a specific ike_sa_id_t-object
+ * 
+ * @param[in] ike_sa_id ike_sa_id_t-object to associate with new IKE_SA.
+ *  			  The object is internal getting cloned 
+ * 			  and so has to be destroyed by the caller.
+ *
+ * @warning the Content of internal ike_sa_id_t-Object can change over time 
+ * 			e.g. when a IKE_SA_INIT has been finished
+ *
+ * @return created ike_sa_t object
+ */
+ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id);
+
+#endif /*IKE_SA_H_*/