get encryptMethodLength() {
    var encryptMethod = this.encryptMethod;
    // get only number from string.
    // @link https://stackoverflow.com/a/10003709/128761 Reference.
    var aesNumber = encryptMethod.match(/\d+/)[0];
    return parseInt(aesNumber);
  } // encryptMethodLength
/**
   * @var integer Return encrypt method or Cipher method number. (128, 192, 256)
   */
@var integer Return encrypt method or Cipher method number.
@var integer Return encrypt method or Cipher method number .
get encryptMethodLength() {
    var encryptMethod = this.encryptMethod;
    var aesNumber = encryptMethod.match(/\d+/)[0];
    return parseInt(aesNumber);
  } 
get encryptMethodLength ( ) { var encryptMethod = this . encryptMethod ; var aesNumber = encryptMethod . match ( / \d+ / ) [ 0 ] ; return parseInt ( aesNumber ) ; }
@var integer Return encrypt method or Cipher method number.
@var integer Return encrypt method or Cipher method number .
// get only number from string. // @link https://stackoverflow.com/a/10003709/128761 Reference. // encryptMethodLength