Hi Guys, This time I had a requirement to Encrypt the request string parameters before passing them to the Controller's method. After referring this solution , I made this solution I hope you like it. 1) SecurityHelper public class SecurityHelper { public static string Encrypt(string plainText) { string key = "jdsg432387#"; byte[] EncryptKey = { }; byte[] IV = { 55, 34, 87, 64, 87, 195, 54, 21 }; EncryptKey = System.Text.Encoding.UTF8.GetBytes(key.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByte = Encoding.UTF8.GetBytes(plainText); MemoryStream mStream ...