diff --git a/Ciphers/keyFinder b/Ciphers/keyFinder
new file mode 100644
index 000000000..5b8bd791f
--- /dev/null
+++ b/Ciphers/keyFinder
@@ -0,0 +1,23 @@
+/******************************************************
+Find and retrieve the encryption key automatically 
+Note: This is a draft version, please help to modify, Thanks!
+******************************************************/
+function keyFinder(){
+ 	var result = "";
+	var key = 0;
+	var wordbank =["is","Is","am","Am","are","Are","have","Have","has","Has","may","May","be","Be"];
+ 	var shiftNum = 0; //count the number of key shifted
+	var str = document.getElementById("encryptedID").value; //get the input string
+	var inStr = str.toString(); //convert the input to String
+	var outStr = ""; // store the output value
+ 	document.getElementById("debug").innerHTML = shiftNum;
+ 	for (var i=0; i<26; i++){
+		outStr = caesarCipherEncodeAndDecodeEngine(inStr,i); // use the encrytpion engine to decrypt the input string, shiftNum=i
+		for ( var i=0; i<wordbank.length; i++){
+			if (wordbank[i] == outStr[i]+outStr[i+1]{
+        key=i;
+      }
+		}
+ 	}
+ 	return key;
+}