public void TestIssuerSetupParameters()
{
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
byte[][] A = new byte[][] { encoding.GetBytes("attribute value") };
byte[] TI = encoding.GetBytes("TI value");
IssuerSetupParameters isp = new IssuerSetupParameters();
isp.GroupConstruction = GroupType.Subgroup;
isp.UidP = encoding.GetBytes("UIDP value");
isp.E = new byte[] { 1 };
IssuerKeyAndParameters ikap = isp.Generate();
ikap.IssuerParameters.Verify();
// invalidate the issuer parameters
IssuerParameters ip = ikap.IssuerParameters;
SubgroupGroupElement sgG0 = (SubgroupGroupElement)ip.G[0];
byte[] g0Bytes = ip.G[0].GetEncoded();
g0Bytes[g0Bytes.Length - 1]++;
ip.G[0] = (SubgroupGroupElement)ip.Gq.CreateGroupElement(g0Bytes);
try
{
ip.Verify();
Assert.Fail();
}
catch (InvalidUProveArtifactException) { }
}
public static void VerifySmartCard(SmartCardDevice smartCardDevice, byte[] com, byte[] response, string hashFunctionName, byte[] proofSession, byte[] challangeMgs)
{
BigInteger resp = new BigInteger(1, response);
//BigInteger comBig = new BigInteger(1, com);
HashFunction hash = new HashFunction(hashFunctionName);
//hash.Hash(new byte[1] {0x1});
//hash.Hash(1);
byte[] proofSessionFoo = new byte[1 + proofSession.Length];
proofSessionFoo[0] = 1;
Buffer.BlockCopy(proofSession, 0, proofSessionFoo, 1, proofSession.Length);
hash.Hash(proofSessionFoo);
hash.Hash(challangeMgs);
byte[] cByte = hash.Digest;
BigInteger c = new BigInteger(1, cByte);
byte[] devicePubKeyByte = smartCardDevice.Device.GetDevicePublicKey(true);
//BigInteger devicePubKey = new BigInteger(1, devicePubKeyByte);
SubgroupGroupDescription subGq = (SubgroupGroupDescription)smartCardDevice.getGroupDescription();
SubgroupGroupElement leftSide = (SubgroupGroupElement)smartCardDevice.getGroupElement().Exponentiate(resp);
SubgroupGroupElement pk = (SubgroupGroupElement)subGq.CreateGroupElement(devicePubKeyByte);
SubgroupGroupElement pkc = (SubgroupGroupElement)pk.Exponentiate(c.Negate());
SubgroupGroupElement rightSide = (SubgroupGroupElement)pkc.Multiply(smartCardDevice.getGroupDescription().CreateGroupElement(com));
Console.Out.WriteLine("Printing left and right side");
Utils.PrintByteArrayToConsole(leftSide.GetEncoded());
Utils.PrintByteArrayToConsole(rightSide.GetEncoded());
}
