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/*
This file is part of GNUnet.
(C) 2014 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
package org.gnunet.voting;
import org.gnunet.construct.Construct;
import org.gnunet.secretsharing.*;
import org.gnunet.testing.TestingFixture;
import org.gnunet.testing.TestingSubsystem;
import org.gnunet.util.*;
import org.gnunet.util.crypto.EcdsaPrivateKey;
import org.gnunet.util.crypto.EcdsaPublicKey;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import java.math.BigInteger;
import java.util.Arrays;
public class TestVotingCrypto extends TestingFixture {
static BigInteger[] generators2;
@BeforeClass
public static void generateGenerators() {
generators2 = Parameters.generateGenerators(2);
}
@Test
public void testEmptyTally() {
final Wrapper<Boolean> success = new Wrapper<Boolean>();
Configuration armConf = new Configuration();
armConf.setValueString("arm", "DEFAULTSERVICES", "consensus set secretsharing");
Program.configureLogging("DEBUG");
// for testing, we vote with the same voter identity multiple times,
// does not matter here ...
final EcdsaPrivateKey privateKey = EcdsaPrivateKey.createRandom();
final EcdsaPublicKey publicKey = privateKey.getPublicKey();
final TestingSubsystem ts = new TestingSubsystem("arm", armConf.writeTemp().getAbsolutePath());
KeyGeneration kg = new KeyGeneration(ts.getConfiguration(), new PeerIdentity[0],
HashCode.random(), AbsoluteTime.now(), AbsoluteTime.now().add(RelativeTime.fromSeconds(5)),
1, new SecretReadyCallback() {
@Override
public void onSecretReady(Share share) {
Assert.assertNotNull(share);
Ciphertext sum = Ciphertext.identity();
Decryption decryption = new Decryption(ts.getConfiguration(), share, sum,
AbsoluteTime.now(), AbsoluteTime.now().add(RelativeTime.fromSeconds(5)), new DecryptCallback() {
@Override
public void onResult(Plaintext plaintext) {
Assert.assertNotNull(plaintext);
System.out.println("Plaintext: " + plaintext);
long x[] = plaintext.bruteForceDiscreteLog(0, new BigInteger[0]);
Assert.assertNotNull(x);
success.set(true);
}
});
}
});
Scheduler.run();
Assert.assertTrue(success.get());
}
@Test
public void testVoteTally() {
final Wrapper<Boolean> success = new Wrapper<Boolean>();
Configuration armConf = new Configuration();
armConf.setValueString("arm", "DEFAULTSERVICES", "consensus set secretsharing");
Program.configureLogging("DEBUG");
// for testing, we vote with the same voter identity multiple times,
// does not matter here ...
final EcdsaPrivateKey privateKey = EcdsaPrivateKey.createRandom();
final EcdsaPublicKey publicKey = privateKey.getPublicKey();
final TestingSubsystem ts = new TestingSubsystem("arm", armConf.writeTemp().getAbsolutePath());
KeyGeneration kg = new KeyGeneration(ts.getConfiguration(), new PeerIdentity[0],
HashCode.random(), AbsoluteTime.now(), AbsoluteTime.now().add(RelativeTime.fromSeconds(5)),
1, new SecretReadyCallback() {
@Override
public void onSecretReady(Share share) {
Assert.assertNotNull(share);
EncryptedVote encryptedVote1 = EncryptedVote.fromChoice(1, share.publicKey, publicKey, generators2);
EncryptedVote encryptedVote2 = EncryptedVote.fromChoice(0, share.publicKey, publicKey, generators2);
EncryptedVote encryptedVote3 = EncryptedVote.fromChoice(0, share.publicKey, publicKey, generators2);
Ciphertext sum = Ciphertext.identity().multiply(encryptedVote1.v.multiply(encryptedVote2.v).multiply(encryptedVote3.v));
Decryption decryption = new Decryption(ts.getConfiguration(), share, sum,
AbsoluteTime.now(), AbsoluteTime.now().add(RelativeTime.fromSeconds(5)), new DecryptCallback() {
@Override
public void onResult(Plaintext plaintext) {
Assert.assertNotNull(plaintext);
long[] t = plaintext.bruteForceDiscreteLog(3, generators2);
Assert.assertNotNull(t);
Assert.assertEquals(t[0], 2);
Assert.assertEquals(t[1], 1);
success.set(true);
}
});
}
});
Scheduler.run();
Assert.assertTrue(success.get());
}
@Test
public void testSerialization() {
final Wrapper<Boolean> success = new Wrapper<Boolean>();
Configuration armConf = new Configuration();
armConf.setValueString("arm", "DEFAULTSERVICES", "consensus set secretsharing");
Program.configureLogging("DEBUG");
final TestingSubsystem ts = new TestingSubsystem("arm", armConf.writeTemp().getAbsolutePath());
final EcdsaPrivateKey privateKey = EcdsaPrivateKey.createRandom();
final EcdsaPublicKey publicKey = privateKey.getPublicKey();
final KeyGeneration kg = new KeyGeneration(ts.getConfiguration(), new PeerIdentity[0],
HashCode.random(), AbsoluteTime.now(), AbsoluteTime.now().add(RelativeTime.fromSeconds(5)),
1, new SecretReadyCallback() {
@Override
public void onSecretReady(Share share) {
Assert.assertNotNull(share);
EncryptedVote encryptedVote1 = EncryptedVote.fromChoice(1, share.publicKey, publicKey, generators2);
Assert.assertTrue(encryptedVote1.disjunctionZkp.verifyChallenge());
Configuration c = new Configuration();
encryptedVote1.writeToConfiguration(c);
System.out.println("Challenge:");
System.out.println(Arrays.toString(encryptedVote1.disjunctionZkp.challenge_c));
System.out.println("ZKP:");
System.out.println(Arrays.toString(Construct.toBinary(encryptedVote1.disjunctionZkp)));
System.out.println("configuration: ");
System.out.println(c.serialize());
EncryptedVote encryptedVote2 = EncryptedVote.parseFromConfiguration(c, publicKey);
Assert.assertTrue(encryptedVote1.disjunctionZkp.verifyChallenge());
Assert.assertEquals(encryptedVote1.v, encryptedVote2.v);
success.set(true);
}
});
Scheduler.run();
Assert.assertTrue(success.get());
}
}
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