Bad Data. System.Security.Cryptography.CryptographicException: Bad Data. at StarPay.Library.Security.User.Encryption64.Decrypt(String stringToDecrypt, String sEncryptionKey) at StarPay.Library.Security.User.Encryption64.decryptString(String strQueryString) at StarPay.Library.Security.User.get_UserPassword() at StarRate.LoginForm.Page_Load(Object sender, EventArgs e)