static void verifyCryptoDataString(String input) throws CryptoDataException {
  if (input.isEmpty() || !input.contains(SEPARATOR)) {
    throw CryptoDataException.fromCryptoDataString(input);
  }
}

static void verifyCryptoDataString ( String input ) throws CryptoDataException { if ( input . isEmpty ( ) || ! input . contains ( SEPARATOR ) ) { throw CryptoDataException . fromCryptoDataString ( input ) ; } }
checks if the given input is a valid encrypted string . will throw an exception if the input is invalid .
