import java.util.ArrayList;
import java.util.Arrays;

import com.google.bitcoin.core.Base58;
import com.google.bitcoin.crypto.ChildNumber;
import com.google.bitcoin.crypto.DeterministicHierarchy;
import com.google.bitcoin.crypto.DeterministicKey;
import com.google.bitcoin.crypto.HDKeyDerivation;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableList.Builder;

/**August 22, 2013 with bitcoinJ 0.10 */
public class Main {
    
    /**compare public keys of 0'/0'/0' and and 0'/0'/0 
     * @param args none used*/
    public static void main(String[] args) {
        System.out.println("start");
        DeterministicHierarchy masterHrchy = new DeterministicHierarchy(
                HDKeyDerivation.createMasterPrivateKey("BitcoinJRulez".getBytes()));
        
        // builder for /0/0
        ArrayList<ChildNumber> zeroZero = new ArrayList<ChildNumber>();
        zeroZero.add(new ChildNumber(0, true));
        zeroZero.add(new ChildNumber(0, true));

        // builders for public and private nodes at /0/0/0
        Builder<ChildNumber> privateNode = new ImmutableList.Builder<ChildNumber>();
        privateNode.addAll(zeroZero);
        privateNode.add(new ChildNumber(0, true /* private */)); 
        DeterministicKey priv = masterHrchy.get(privateNode.build(), false, true);
        
        Builder<ChildNumber> pubNode = new ImmutableList.Builder<ChildNumber>();
        pubNode.addAll(zeroZero);
        pubNode.add(new ChildNumber(0, false /* public */)); 
        DeterministicKey pub = masterHrchy.get(pubNode.build(), false, true);
        
        assert Arrays.equals(priv.getPubKeyBytes(), pub.getPubKeyBytes()) : 
            Base58.encode(priv.getPubKeyBytes()) + " vs. " + Base58.encode(pub.getPubKeyBytes());
        
        System.out.println("end");
    }        
        
}