/// <summary>
/// Load all votings from the database.
/// </summary>
private void LoadVotings()
{
this.votings = new Dictionary<Guid, VotingServerEntity>();
MySqlCommand selectCommand = new MySqlCommand("SELECT Id, Parameters, Status FROM voting", DbConnection);
MySqlDataReader reader = selectCommand.ExecuteReader();
while (reader.Read())
{
Guid id = reader.GetGuid(0);
byte[] signedParametersData = reader.GetBlob(1);
Signed<VotingParameters> signedParameters = Serializable.FromBinary<Signed<VotingParameters>>(signedParametersData);
VotingStatus status = (VotingStatus)reader.GetInt32(2);
VotingServerEntity entity = new VotingServerEntity(this, signedParameters, this.CertificateStorage, this.serverCertificate, status);
this.votings.Add(id, entity);
}
reader.Close();
}
/// <summary>
/// Creates a new voting.
/// </summary>
/// <param name="votingParameters">Parameters for the voting.</param>
/// <param name="authorities">List of authorities to oversee the voting.</param>
public void CreateVoting(
IRpcConnection connection,
Signed<VotingParameters> signedVotingParameters,
IEnumerable<AuthorityCertificate> authorities)
{
if (signedVotingParameters == null)
throw new PiArgumentException(ExceptionCode.ArgumentNull, "Voting parameters cannot be null.");
if (authorities == null)
throw new PiArgumentException(ExceptionCode.ArgumentNull, "Authority list cannot be null.");
VotingParameters votingParameters = signedVotingParameters.Value;
if (!signedVotingParameters.Verify(CertificateStorage, votingParameters.VotingBeginDate))
{
if (!signedVotingParameters.VerifySimple())
{
Logger.Log(LogLevel.Warning,
"Connection {0}: Admin {1} (unverified) tried to create voting {2} title {3} but the signature was wrong.",
connection.Id,
signedVotingParameters.Certificate.Id.ToString(),
votingParameters.VotingId.ToString(),
votingParameters.Title.Text);
}
else if (signedVotingParameters.Certificate.Validate(CertificateStorage, votingParameters.VotingBeginDate) != CertificateValidationResult.Valid)
{
Logger.Log(LogLevel.Warning,
"Connection {0}: Admin {1} (unverified) tried to create voting {2} title {3} but his certificate status was {4}.",
connection.Id,
signedVotingParameters.Certificate.Id.ToString(),
votingParameters.VotingId.ToString(),
votingParameters.Title.Text,
signedVotingParameters.Certificate.Validate(CertificateStorage, votingParameters.VotingBeginDate).ToString());
}
else
{
Logger.Log(LogLevel.Warning,
"Connection {0}: Admin {1} (unverified) tried to create voting {2} title {3} but his signature was invalid.",
connection.Id,
signedVotingParameters.Certificate.Id.ToString(),
votingParameters.VotingId.ToString(),
votingParameters.Title.Text);
}
throw new PiSecurityException(ExceptionCode.InvalidSignature, "Invalid signature of voting authority.");
}
if (!(signedVotingParameters.Certificate is AdminCertificate))
{
Logger.Log(LogLevel.Warning,
"Connection {0}: Admin {1} (verified) tried to create voting {2} title {3} but he is a {4}.",
connection.Id,
signedVotingParameters.Certificate.Id.ToString(),
votingParameters.VotingId.ToString(),
votingParameters.Title.Text,
signedVotingParameters.Certificate.TypeText);
throw new PiSecurityException(ExceptionCode.NoAuthorizedAdmin, "No authorized admin.");
}
if (!CertificateStorage.SignedRevocationLists
.Any(signedCrl => signedCrl.Verify(CertificateStorage) &&
votingParameters.VotingBeginDate >= signedCrl.Value.ValidFrom &&
votingParameters.VotingBeginDate <= signedCrl.Value.ValidUntil))
{
Logger.Log(LogLevel.Info,
"Connection {0}: Admin id {1} name {2} tried to create voting {3} title {4} but the voting begin date {5} was not covered by any CRL.",
connection.Id,
signedVotingParameters.Certificate.Id.ToString(),
((AdminCertificate)signedVotingParameters.Certificate).FullName,
votingParameters.VotingId.ToString(),
votingParameters.Title.Text,
votingParameters.VotingBeginDate.ToString());
throw new PiSecurityException(ExceptionCode.InvalidSignature, "Voting begin date not covered by CRL.");
}
if (votingParameters.P == null)
throw new PiArgumentException(ExceptionCode.ArgumentNull, "P cannot be null.");
if (votingParameters.Q == null)
throw new PiArgumentException(ExceptionCode.ArgumentNull, "Q cannot be null.");
if (votingParameters.F == null)
throw new PiArgumentException(ExceptionCode.ArgumentNull, "F cannot be null.");
if (votingParameters.G == null)
throw new PiArgumentException(ExceptionCode.ArgumentNull, "G cannot be null.");
if (!Prime.HasSufficientLength(votingParameters.P, BaseParameters.PrimeBits))
throw new PiException(ExceptionCode.ArgumentNull, "P is not long enough");
if (!Prime.HasSufficientLength(votingParameters.Q, BaseParameters.PrimeBits))
throw new PiException(ExceptionCode.ArgumentNull, "Q is not long enough");
if (!Prime.IsPrimeUnsure(votingParameters.P))
throw new PiArgumentException(ExceptionCode.PIsNoPrime, "P is not prime.");
if (!Prime.IsPrimeUnsure((votingParameters.P - 1) / 2))
throw new PiArgumentException(ExceptionCode.PIsNoSafePrime, "P is no safe prime.");
if (!Prime.IsPrimeUnsure(votingParameters.Q))
throw new PiArgumentException(ExceptionCode.QIsNoPrime, "Q is not prime.");
if (!votingParameters.AuthorityCount.InRange(3, 23))
throw new PiArgumentException(ExceptionCode.AuthorityCountOutOfRange, "Authority count out of range.");
if (!votingParameters.Thereshold.InRange(1, votingParameters.AuthorityCount - 1))
throw new PiArgumentException(ExceptionCode.TheresholdOutOfRange, "Thereshold out of range.");
foreach (Question question in votingParameters.Questions)
{
if (question.Options.Count() < 2)
throw new PiArgumentException(ExceptionCode.OptionCountOutOfRange, "Option count out of range.");
if (!question.MaxVota.InRange(1, question.Options.Count()))
throw new PiArgumentException(ExceptionCode.MaxVotaOutOfRange, "Maximum vota out of range.");
}
if (votingParameters.AuthorityCount != authorities.Count())
throw new PiArgumentException(ExceptionCode.AuthorityCountMismatch, "Authority count does not match number of provided authorities.");
if (!authorities.All(authority => authority.Validate(CertificateStorage, votingParameters.VotingBeginDate) == CertificateValidationResult.Valid))
throw new PiArgumentException(ExceptionCode.AuthorityInvalid, "Authority certificate invalid or not recognized.");
MySqlCommand insertCommand = new MySqlCommand("INSERT INTO voting (Id, Parameters, Status) VALUES (@Id, @Parameters, @Status)", DbConnection);
insertCommand.Parameters.AddWithValue("@Id", votingParameters.VotingId.ToByteArray());
insertCommand.Parameters.AddWithValue("@Parameters", signedVotingParameters.ToBinary());
insertCommand.Parameters.AddWithValue("@Status", (int)VotingStatus.New);
insertCommand.ExecuteNonQuery();
Logger.Log(LogLevel.Info, "Connection {0}: Voting id {1} title {2} is created.", connection.Id, votingParameters.VotingId.ToString(), votingParameters.Title.Text);
VotingServerEntity voting = new VotingServerEntity(this, signedVotingParameters, CertificateStorage, this.serverCertificate);
authorities.Foreach(authority => voting.AddAuthority(connection, authority));
this.votings.Add(voting.Id, voting);
voting.SendAuthorityActionRequiredMail(MailType.AuthorityCreateSharesGreen);
}
/// <summary>
/// Voting entity test.
/// </summary>
/// <remarks>
/// Used only during development.
/// </remarks>
public void EntityTest()
{
IRpcConnection connection = new DummyConnection();
DateTime validUntil = DateTime.Now.AddDays(1);
var root = new CACertificate(null, "Root");
root.CreateSelfSignature();
var rootCrl = new RevocationList(root.Id, DateTime.Now, validUntil, new List<Guid>());
var sigRootCrl = new Signed<RevocationList>(rootCrl, root);
var intermediate = new CACertificate(null, "Intermediate");
intermediate.CreateSelfSignature();
intermediate.AddSignature(root, validUntil);
var intCrl = new RevocationList(intermediate.Id, DateTime.Now, validUntil, new List<Guid>());
var sigIntCrl = new Signed<RevocationList>(intCrl, intermediate);
var admin = new AdminCertificate(Language.English, null, "Admin");
admin.CreateSelfSignature();
admin.AddSignature(intermediate, DateTime.Now.AddDays(1));
var serverCert = new ServerCertificate("Server");
serverCert.CreateSelfSignature();
serverCert.AddSignature(intermediate, DateTime.Now.AddDays(1));
VotingParameters parameters =
new VotingParameters(
new MultiLanguageString("Zufrieden"),
new MultiLanguageString("Tada"),
new MultiLanguageString(string.Empty),
DateTime.Now,
DateTime.Now.AddDays(1),
0);
parameters.GenerateNumbers(Files.TestDataPath);
Question question = new Question(new MultiLanguageString("Zufrieden?"), new MultiLanguageString(string.Empty), new MultiLanguageString(string.Empty), 1);
question.AddOption(new Option(new MultiLanguageString("Nein"), new MultiLanguageString("Dagegen"), new MultiLanguageString(string.Empty)));
question.AddOption(new Option(new MultiLanguageString("Ja"), new MultiLanguageString("Dafür"), new MultiLanguageString(string.Empty)));
parameters.AddQuestion(question);
Signed<VotingParameters> signedParameters = new Signed<VotingParameters>(parameters, admin);
DateTime start = DateTime.Now;
Console.WriteLine();
Console.Write("Voting begins...");
CertificateStorage serverCertStorage = new CertificateStorage();
serverCertStorage.AddRoot(root);
serverCertStorage.Add(intermediate);
serverCertStorage.AddRevocationList(sigRootCrl);
serverCertStorage.AddRevocationList(sigIntCrl);
VotingServerEntity vs = new VotingServerEntity(null, signedParameters, serverCertStorage, serverCert);
var a1c = new AuthorityCertificate(Language.English, "Authority 1", null);
a1c.CreateSelfSignature();
a1c.AddSignature(intermediate, validUntil);
var a2c = new AuthorityCertificate(Language.English, "Authority 2", null);
a2c.CreateSelfSignature();
a2c.AddSignature(intermediate, validUntil);
var a3c = new AuthorityCertificate(Language.English, "Authority 3", null);
a3c.CreateSelfSignature();
a3c.AddSignature(intermediate, validUntil);
var a4c = new AuthorityCertificate(Language.English, "Authority 4", null);
a4c.CreateSelfSignature();
a4c.AddSignature(intermediate, validUntil);
var a5c = new AuthorityCertificate(Language.English, "Authority 5", null);
a5c.CreateSelfSignature();
a5c.AddSignature(intermediate, validUntil);
var a1 = new AuthorityEntity(serverCertStorage, a1c);
var a2 = new AuthorityEntity(serverCertStorage, a2c);
var a3 = new AuthorityEntity(serverCertStorage, a3c);
var a4 = new AuthorityEntity(serverCertStorage, a4c);
var a5 = new AuthorityEntity(serverCertStorage, a5c);
vs.AddAuthority(connection, a1.Certificate);
vs.AddAuthority(connection, a2.Certificate);
vs.AddAuthority(connection, a3.Certificate);
vs.AddAuthority(connection, a4.Certificate);
vs.AddAuthority(connection, a5.Certificate);
a1.Prepare(1, vs.SignedParameters);
a2.Prepare(2, vs.SignedParameters);
a3.Prepare(3, vs.SignedParameters);
a4.Prepare(4, vs.SignedParameters);
a5.Prepare(5, vs.SignedParameters);
a1.SetAuthorities(vs.AuthorityList);
a2.SetAuthorities(vs.AuthorityList);
a3.SetAuthorities(vs.AuthorityList);
a4.SetAuthorities(vs.AuthorityList);
a5.SetAuthorities(vs.AuthorityList);
vs.DepositShares(connection, a1.GetShares());
vs.DepositShares(connection, a2.GetShares());
vs.DepositShares(connection, a3.GetShares());
vs.DepositShares(connection, a4.GetShares());
vs.DepositShares(connection, a5.GetShares());
var r1 = a1.VerifyShares(vs.GetAllShares());
var r2 = a2.VerifyShares(vs.GetAllShares());
var r3 = a3.VerifyShares(vs.GetAllShares());
var r4 = a4.VerifyShares(vs.GetAllShares());
var r5 = a5.VerifyShares(vs.GetAllShares());
vs.DepositShareResponse(connection, r1);
vs.DepositShareResponse(connection, r2);
vs.DepositShareResponse(connection, r3);
vs.DepositShareResponse(connection, r4);
vs.DepositShareResponse(connection, r5);
var v1c = new VoterCertificate(Language.English, null, 0);
v1c.CreateSelfSignature();
v1c.AddSignature(intermediate, validUntil);
var cs = new CertificateStorage();
cs.AddRoot(root);
var v1 = new VoterEntity(cs);
IEnumerable<int> questionVota = new int[] { 0, 1 };
var vote1 = v1.Vote(vs.GetVotingMaterial(), v1c, new IEnumerable<int>[] { questionVota }, null);
vs.Vote(connection, vote1);
int voters = 10;
for (int i = 1000; i < 1000 + voters; i++)
{
var vc = new VoterCertificate(Language.English, null, 0);
vc.CreateSelfSignature();
vc.AddSignature(intermediate, validUntil);
var vx = new VoterEntity(cs);
IEnumerable<int> questionVota2 = new int[] { 0, 1 };
var votex = vx.Vote(vs.GetVotingMaterial(), vc, new IEnumerable<int>[] { questionVota2 }, null);
vs.Vote(connection, votex);
}
for (int i = 2000; i < 2000 + voters; i++)
{
var vc = new VoterCertificate(Language.English, null, 0);
vc.CreateSelfSignature();
vc.AddSignature(intermediate, validUntil);
var vx = new VoterEntity(cs);
IEnumerable<int> questionVota3 = new int[] { 1, 0 };
var votex = vx.Vote(vs.GetVotingMaterial(), vc, new IEnumerable<int>[] { questionVota3 }, null);
vs.Vote(connection, votex);
}
vs.EndVote();
a1.TallyBegin(vs.GetVotingMaterial());
a2.TallyBegin(vs.GetVotingMaterial());
a3.TallyBegin(vs.GetVotingMaterial());
a4.TallyBegin(vs.GetVotingMaterial());
a5.TallyBegin(vs.GetVotingMaterial());
for (int envelopeIndex = 0; envelopeIndex < vs.GetEnvelopeCount(); envelopeIndex++)
{
a1.TallyAdd(envelopeIndex, vs.GetEnvelope(envelopeIndex), new Progress(null));
a2.TallyAdd(envelopeIndex, vs.GetEnvelope(envelopeIndex), new Progress(null));
a3.TallyAdd(envelopeIndex, vs.GetEnvelope(envelopeIndex), new Progress(null));
a4.TallyAdd(envelopeIndex, vs.GetEnvelope(envelopeIndex), new Progress(null));
a5.TallyAdd(envelopeIndex, vs.GetEnvelope(envelopeIndex), new Progress(null));
}
var pd1 = a1.PartiallyDecipher();
var pd2 = a2.PartiallyDecipher();
var pd3 = a3.PartiallyDecipher();
var pd4 = a4.PartiallyDecipher();
var pd5 = a5.PartiallyDecipher();
vs.DepositPartialDecipher(connection, pd1);
vs.DepositPartialDecipher(connection, pd2);
vs.DepositPartialDecipher(connection, pd3);
vs.DepositPartialDecipher(connection, pd4);
vs.DepositPartialDecipher(connection, pd5);
v1.TallyBegin(vs.GetVotingMaterial(), BaseParameters.StandardProofCount);
for (int envelopeIndex = 0; envelopeIndex < vs.GetEnvelopeCount(); envelopeIndex++)
{
v1.TallyAdd(envelopeIndex, vs.GetEnvelope(envelopeIndex), new Progress(null));
}
for (int authorityIndex = 1; authorityIndex < vs.Parameters.AuthorityCount + 1; authorityIndex++)
{
v1.TallyAddPartialDecipher(vs.GetPartialDecipher(authorityIndex));
}
var res1 = v1.TallyResult;
TimeSpan duration = DateTime.Now.Subtract(start);
Console.WriteLine("Succeded {0}", duration.ToString());
}