code: public static String encrypt(String str) {
  	if (StringUtil.isEmpty(str)) return "";
  	if (StringUtil.startsWithIgnoreCase(str, "encrypted:")) return str;
  	return "encrypted:" + new BlowfishEasy("sdfsdfs").encryptString(str);
      }
docs: default encryption for configuration (not very secure)
  
  @param str
  @return