public void Test_Encrypt_Ballot_Simple_Succeeds()
{
// Configure the election context
var keypair = ElGamalKeyPair.FromSecret(Constants.TWO_MOD_Q);
var description = new Manifest(manifest_json);
var manifest = new InternalManifest(description);
var context = new CiphertextElectionContext(
1UL, 1UL, keypair.PublicKey, Constants.TWO_MOD_Q, manifest.ManifestHash);
var device = new EncryptionDevice(12345UL, 23456UL, 34567UL, "Location");
var mediator = new EncryptionMediator(manifest, context, device);
var ballot = new PlaintextBallot(plaintext_json);
// Act
var ciphertext = mediator.Encrypt(ballot);
// Assert
// a property
Assert.That(ciphertext.ObjectId == ballot.ObjectId);
// json serialization
var json = ciphertext.Json;
var fromJson = new CiphertextBallot(json);
Assert.That(ciphertext.ObjectId == fromJson.ObjectId);
// binary serialization
var bson = ciphertext.Bson;
var fromBson = CiphertextBallot.FromBson(bson);
Assert.That(ciphertext.ObjectId == fromBson.ObjectId);
// submitted ballot
var submitted = SubmittedBallot.From(ciphertext, BallotBoxState.cast);
Assert.That(ciphertext.ObjectId == submitted.ObjectId);
}
public void Test_Elgamal_Encrypt_Simple()
{
// Arrange
var nonce = Constants.ONE_MOD_Q;
var secret = Constants.TWO_MOD_Q;
var keyPair = ElGamalKeyPair.FromSecret(secret);
var publicKey = keyPair.PublicKey;
var vote = 1UL;
// Act
var ciphertext = ElGamal.Encrypt(vote, nonce, publicKey);
var plaintext = ciphertext.Decrypt(keyPair.SecretKey);
// Assert
Assert.That(plaintext == vote);
}
void Encrypt_Button_Clicked(System.Object sender, System.EventArgs e)
{
var nonce = Constants.ONE_MOD_Q;
// Don't use this secret key except for silly tests.
var secretKey = Constants.TWO_MOD_Q;
var keyPair = ElGamalKeyPair.FromSecret(secretKey);
var publicKey = keyPair.PublicKey;
ulong vote = 1;
var ciphertext = Elgamal.Encrypt(vote, nonce, publicKey);
// var plaintext = ciphertext.Decrypt(keyPair.SecretKey);
((Button)sender).Text = $"I encrypted a vote. Maybe even the one you asked for.";
}
public void Test_Compact_Encrypt_Ballot_Simple_Succeeds()
{
var keypair = ElGamalKeyPair.FromSecret(Constants.TWO_MOD_Q);
var description = new Manifest(jsonManifest);
var manifest = new InternalManifest(description);
var context = new CiphertextElectionContext(1UL, 1UL, keypair.PublicKey, Constants.TWO_MOD_Q, manifest.ManifestHash);
var device = new EncryptionDevice(12345UL, 23456UL, 34567UL, "Location");
var mediator = new EncryptionMediator(manifest, context, device);
var ballot = new PlaintextBallot(plaintext);
// Act
var compact = mediator.CompactEncrypt(ballot);
// Assert
Assert.That(compact.ObjectId == ballot.ObjectId);
var msgpack = compact.ToMsgPack();
var fromMsgpack = new CompactCiphertextBallot(msgpack);
Assert.That(compact.ObjectId == fromMsgpack.ObjectId);
}