import java.math.BigInteger;
import java.security.SecureRandom;

public class SecureRandomTest {
	public static void main(String... argz) throws Exception {
		SecureRandom rnd = SecureRandom.getInstance("SHA1PRNG");
		byte[] seed = rnd.generateSeed(1024);
		System.out.println(new BigInteger(1, seed).toString(16));
	}
}