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diff --git a/Source/charon/encoding/payloads/ke_payload.h b/Source/charon/encoding/payloads/ke_payload.h
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+++ b/Source/charon/encoding/payloads/ke_payload.h
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+/**
+ * @file ke_payload.h
+ * 
+ * @brief Declaration of the class ke_payload_t. 
+ * 
+ * An object of this type represents an IKEv2 KE-Payload.
+ * 
+ * See section 3.4 of RFC for details of this payload type.
+ * 
+ */
+
+/*
+ * 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 KE_PAYLOAD_H_
+#define KE_PAYLOAD_H_
+
+#include <types.h>
+#include <encoding/payloads/payload.h>
+#include <encoding/payloads/transform_substructure.h>
+#include <utils/linked_list.h>
+
+/**
+ * Critical flag must not be set
+ */
+#define KE_PAYLOAD_CRITICAL_FLAG FALSE;
+
+/**
+ * KE payload length in bytes without any key exchange data
+ */
+#define KE_PAYLOAD_HEADER_LENGTH 8
+
+/**
+ * Object representing an IKEv2-KE Payload
+ * 
+ * The KE Payload format is described in RFC section 3.4.
+ * 
+ */
+typedef struct ke_payload_s ke_payload_t;
+
+struct ke_payload_s {
+	/**
+	 * implements payload_t interface
+	 */
+	payload_t payload_interface;
+	
+	/**
+	 * @brief Returns the currently set key exchange data of this KE payload.
+	 * 	
+	 * @warning Returned data are not copied.
+	 * 
+	 * @param this 	calling ke_payload_t object
+	 * @return 		chunk_t pointing to the value
+	 */
+	chunk_t (*get_key_exchange_data) (ke_payload_t *this);
+	
+	/**
+	 * @brief Sets the key exchange data of this KE payload.
+	 * 	
+	 * @warning Value is getting copied.
+	 * 
+	 * @param this 				calling ke_payload_t object
+	 * @param key_exchange_data 	chunk_t pointing to the value to set
+	 * @return 		
+	 * 							- SUCCESS or
+	 * 							- OUT_OF_RES
+	 */
+	status_t (*set_key_exchange_data) (ke_payload_t *this, chunk_t key_exchange_data);
+
+	/**
+	 * @brief Gets the Diffie-Hellman Group Number of this KE payload.
+	 * 	
+	 * @param this 		calling ke_payload_t object
+	 * @return 			DH Group Number of this payload
+	 */
+	diffie_hellman_group_t (*get_dh_group_number) (ke_payload_t *this);
+
+	/**
+	 * @brief Sets the Diffie-Hellman Group Number of this KE payload.
+	 * 	
+	 * @param this 				calling ke_payload_t object
+	 * @param dh_group_number	DH Group to set
+	 * @return 					SUCCESS
+	 */
+	status_t (*set_dh_group_number) (ke_payload_t *this, diffie_hellman_group_t dh_group_number);
+
+	/**
+	 * @brief Destroys an ke_payload_t object.
+	 *
+	 * @param this 	ke_payload_t object to destroy
+	 * @return 		
+	 * 				SUCCESS in any case
+	 */
+	status_t (*destroy) (ke_payload_t *this);
+};
+
+/**
+ * @brief Creates an empty ke_payload_t object
+ * 
+ * @return			
+ * 					- created ke_payload_t object, or
+ * 					- NULL if failed
+ */
+ 
+ke_payload_t *ke_payload_create();
+
+
+#endif /*KE_PAYLOAD_H_*/