public void GenerateRevocationAuthorityTest()
{
IssuerSetupParameters isp = new IssuerSetupParameters(maxNumberOfAttributes);
isp.UidP = new byte[] { (byte)0 };
//isp.NumberOfAttributes = 1;
IssuerParameters ip = isp.Generate().IssuerParameters;
RevocationAuthority RA1 = RevocationAuthority.GenerateRevocationAuthority(ip);
Assert.AreEqual(RA1.RAParameters.gt, RA1.Accumulator);
// generate a 2nd RA
RevocationAuthority RA2 = RevocationAuthority.GenerateRevocationAuthority(ip.Gq.GroupName, ip.UidH);
Assert.AreEqual(RA1.RAParameters.g, RA2.RAParameters.g);
Assert.AreEqual(RA1.RAParameters.g1, RA2.RAParameters.g1);
Assert.AreEqual(RA1.RAParameters.gt, RA2.RAParameters.gt);
Assert.AreEqual(RA1.RAParameters.group, RA2.RAParameters.group);
}
public void AccumulatorTest()
{
RevocationAuthority RA = RevocationAuthority.GenerateRevocationAuthority(SubgroupParameterSets.ParamSet_SG_2048256_V1Name, "SHA-256");
FieldZq Zq = RA.RAParameters.group.FieldZq;
GroupElement emptyAccumulator = RA.Accumulator;
HashSet <FieldZqElement> revokedValues1 = new HashSet <FieldZqElement>(Zq.GetRandomElements(5, false));
// add and remove values, accumulator should be empty
RA.UpdateAccumulator(revokedValues1, revokedValues1);
Assert.AreEqual(emptyAccumulator, RA.Accumulator);
// again with different API
RA.UpdateAccumulator(revokedValues1, null);
RA.UpdateAccumulator(null, revokedValues1);
Assert.AreEqual(emptyAccumulator, RA.Accumulator);
// add and remove values, accumulator should be as it started
// fill in some values
RA.UpdateAccumulator(revokedValues1);
GroupElement V = RA.Accumulator;
// add more values
HashSet <FieldZqElement> revokedValues2 = new HashSet <FieldZqElement>(Zq.GetRandomElements(5, false));
RA.UpdateAccumulator(revokedValues2);
// remove the last set of values, accumulator should be as it was before
RA.UpdateAccumulator(null, revokedValues2);
Assert.AreEqual(V, RA.Accumulator);
// add private key negation to revocation set
try
{
var privateKeyNegation = new HashSet <FieldZqElement>();
privateKeyNegation.Add(RA.PrivateKey.Negate());
RA.UpdateAccumulator(privateKeyNegation, null);
Assert.Fail("Exception expected");
}
catch (ArgumentException)
{
// expected
}
}
public void TestSerialization()
{
// generate a new revocation authority
IssuerSetupParameters isp = new IssuerSetupParameters(maxNumberOfAttributes);
isp.UidP = new byte[] { (byte)0 };
//isp.NumberOfAttributes = 1;
IssuerParameters ip = isp.Generate().IssuerParameters;
RevocationAuthority RA = RevocationAuthority.GenerateRevocationAuthority(ip);
// TODO: make a getDefaulHashForGroup method
RevocationAuthority.GenerateRevocationAuthority(SubgroupParameterSets.ParamSet_SG_2048256_V1Name, "SHA-256");
// set a random accumulator
RA.Accumulator = RA.RAParameters.gt.Exponentiate(RA.RAParameters.group.FieldZq.GetRandomElement(false));
RevocationAuthority RA2 = ip.Deserialize <RevocationAuthority>(ip.Serialize <RevocationAuthority>(RA));
Assert.AreEqual(RA.PrivateKey, RA2.PrivateKey);
Assert.AreEqual(RA.RAParameters.g, RA2.RAParameters.g);
Assert.AreEqual(RA.RAParameters.g1, RA2.RAParameters.g1);
Assert.AreEqual(RA.RAParameters.gt, RA2.RAParameters.gt);
Assert.AreEqual(RA.RAParameters.K, RA2.RAParameters.K);
Assert.AreEqual(RA.RAParameters.uidh, RA2.RAParameters.uidh);
Assert.AreEqual(RA.Accumulator, RA2.Accumulator);
}
public void MyTestInitialize()
{
// instantiate the revocation authority
RA = RevocationAuthority.GenerateRevocationAuthority(ip);
}