package JointFeldmanProtocol;

import org.factcenter.qilin.primitives.concrete.Zpstar;
import org.junit.Before;
import org.junit.Test;

import java.math.BigInteger;
import java.util.Random;

/**
 * Created by Tzlil on 2/9/2016.
 */
public class DKGTest {


    DKG[] dkgs;
    Thread[] threads;
    int tests = 1 << 10;
    Random random;

    @Before
    public void settings(){
        BigInteger p = BigInteger.valueOf(2903);
        BigInteger q = p.subtract(BigInteger.ONE).divide(BigInteger.valueOf(2));
        Zpstar zpstar = new Zpstar(p);
        random = new Random();
        BigInteger g;
        BigInteger ZERO = zpstar.zero();
        do{
            g = zpstar.sample(random);
        }while (!g.equals(ZERO) && !zpstar.multiply(g,q).equals(ZERO));// sample from QRZp*
        int t = 8;
        int n = 20
                ;
        Network network = new Network(n);
        dkgs = new DKG[n];
        threads = new Thread[n];
        for (int i = 0 ; i < n ; i++) {
            dkgs[i] = new DKG(t, n, new BigInteger(q.bitLength(), random).mod(q), random, p, q, g, network);
            threads[i] = new Thread(dkgs[i]);
        }
    }

    @Test
    public void DKGTest() throws Exception {
        for (int i = 0 ; i < threads.length ; i++){
            threads[i].start();
        }
        for (int i = 0 ; i < threads.length ; i++){
            threads[i].join();
        }

        for (int i = 0; i < dkgs.length - 1 ; i++){
            assert (dkgs[i].getY().equals(dkgs[i+1].getY()));
        }
    }
}