import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MainClass {
public static byte[] makeDigest(String user, String password, long t1, double q1)
throws NoSuchAlgorithmException {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(user.getBytes());
md.update(password.getBytes());
md.update(makeBytes(t1, q1));
return md.digest();
}
}