diff --git a/js/testing/test-signature-string.html b/js/testing/test-signature-string.html
index fa31102..58fb451 100644
--- a/js/testing/test-signature-string.html
+++ b/js/testing/test-signature-string.html
@@ -5,24 +5,8 @@
 
 <head>
 	<title>NDN Signature - String</title>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/jsbn.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/jsbn2.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/rsa.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/rsa2.js"></script>
-	
-	<script language="JavaScript" type="text/javascript" src="../securityLib/sha1.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/sha256.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/sha512.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/md5.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/ripemd160.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/base64.js"></script>
-	
-	<script language="JavaScript" type="text/javascript" src="../securityLib/rsapem-1.1.min.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/rsasign-1.2.min.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/asn1hex-1.1.min.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../securityLib/x509-1.1.min.js"></script>
-	<script language="JavaScript" type="text/javascript" src="../security/KeyManager.js"></script>
-	
+
+    <script type="text/javascript" src="../Helper.js"></script>
 		
 	<script type="text/javascript">
 		function sign(){