Encryption / Decryption in Javascript

Introduction:
As as web Developer some times you need encryption and Decryption in Java Script. for this purpose a quick code snap is given below.

Solution:

Java Script Encryption Function:

function Encrypt(PlainText, Key) 

{

            var to_enc = PlainText.toString().replace(/^\n+/, "").replace(/\n+$/, "");

            var xor_key = Key;

            var the_res = "";

            for (i = 0; i < to_enc.length; ++i) {

                if (to_enc.charCodeAt(i) <= 32) {

                    the_res += String.fromCharCode((to_enc.charCodeAt(i)));

                }

                else {

                    the_res += String.fromCharCode((to_enc.charCodeAt(i)) - Key);

                }

            }

            return (the_res);

 }

Java Script Decryption Function:

function Decrypt(CipherText, Key) 

{

            var to_dec = CipherText;

            var xor_key = Key;

            var PlainText = "";

            for (i = 0; i < to_dec.length; i++) {

                if (to_dec.charCodeAt(i) <= 32) {

                    PlainText += String.fromCharCode((to_dec.charCodeAt(i)));

                }

                else {

                    PlainText += String.fromCharCode((to_dec.charCodeAt(i)) + Key);

                }

            }

            return (PlainText);

}

Key points for use:

• Provide same key in both function for Encryption and Decryption.

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