code: public String decryptOrNull(String data) {
          try {
              return decrypt(data);
          } catch (Exception e) {
              e.printStackTrace();
              return null;
          }
      }
docs: This is a sugar method that calls decrypt method and catch the exceptions returning
  {@code null} when it occurs and logging the error
  
  @param data the String to be decrypted
  
  @return the decrypted String or {@code null} if you send the data as {@code null}