diff --git a/extensions/app_diameap/diameap_eap.h b/extensions/app_diameap/diameap_eap.h
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+/*****************************************************************************************************
+ * Software License Agreement (BSD License)
+ * Author : Souheil Ben Ayed <souheil@tera.ics.keio.ac.jp>
+ *
+ * Copyright (c) 2009-2010, Souheil Ben Ayed, Teraoka Laboratory of Keio University, and the WIDE Project
+ * All rights reserved.
+ *
+ * Redistribution and use of this software in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    This product includes software developed by Souheil Ben Ayed <souheil@tera.ics.keio.ac.jp>.
+ *
+ * 4. Neither the name of Souheil Ben Ayed, Teraoka Laboratory of Keio University or the WIDE Project nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************************************/
+
+
+#ifndef DIAMEAP_EAP_H_
+#define DIAMEAP_EAP_H_
+
+
+/************************************************/
+/*		EAP AAA Interface						*/
+/************************************************/
+
+/* EAP Backend Authenticator State Machine */
+struct diameap_eap_interface
+{
+
+	/* Variables (AAA Interface to Backend Authenticator)*/
+	boolean aaaEapResp;
+	struct eap_packet aaaEapRespData;
+
+	/*Variables (Backend Authenticator to AAA Interface )*/
+	boolean aaaEapReq;
+	boolean aaaEapNoReq;
+	boolean aaaSuccess;
+	boolean aaaFail;
+	struct eap_packet aaaEapReqData;
+	u8 *aaaEapMSKData;
+	int aaaEapMSKLength;
+	u8 *aaaEapEMSKData;
+	int aaaEapEMSKLength;
+	boolean aaaEapKeyAvailable;
+	int aaaMethodTimeout;
+
+};
+
+int diameap_eap_statemachine(struct eap_state_machine * sm, struct diameap_eap_interface * eap_i, boolean * error);
+
+
+#endif /* EAP_H_ */