deMd5 encryption in scala

def encodePassword(message: String): String = {
  val md5 = MessageDigest.getInstance("MD5")
  val encoded = md5.digest(message.getBytes())

  encoded.map(byte => {
    var hex = Integer.toHexString(byte & 0xFF)
    if (hex.length < 2) {
      hex = "0" + hex
    }
    hex
  }).mkString
}