How to use

hex

method

in

leap.lang.codec.MD5

protected String sign(String token , String expires) {
  String content = token + ":" + expires +  ":" + secret;
  String signed  = MD5.hex(Strings.getBytesUtf8(content));
  return signed;
}

protected String sign(String username, String password, long expires) {
  String key = securityConfig.getRememberMeSecret();
  if(Strings.isEmpty(key)){
    log.debug("Remember-me secret not exists, cannot sign user tokens");
    return null;
  }
  
  String data = username + ":" + expires + ":" + password + ":" + key;
  return MD5.hex(Strings.getBytesUtf8(data));
}