/******************************************************

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;

}