import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;


public class MD5 {
    public static String encrypt(String message) throws NoSuchAlgorithmException, UnsupportedEncodingException {
        MessageDigest md = MessageDigest.getInstance("MD5");
            byte[] hash = md.digest(message.getBytes("UTF-8"));
        return convertToHex(hash);
    }
    
    public static String convertToHex(byte[] hash){
        StringBuilder sb = new StringBuilder(2 * hash.length);
            for (byte b : hash) {
                sb.append(String.format("%02x", b & 0xff));
            }
            return sb.toString();
    }
    
    public static boolean compareMD5(String digesta, String digestb) throws UnsupportedEncodingException{
       return MessageDigest.isEqual(digesta.getBytes("UTF-8"), digestb.getBytes("UTF-8"));
    }
}