public SecondIssuanceMessageComposite getSecondMessage(string[] attributesParam, IssuerParametersComposite ipc, int numberOfTokensParam, FirstIssuanceMessageComposite firstMessage, string sessionID)
{
/*
* token issuance - generate second message
*/
cOut.write("Issuing U-Prove tokens - generate second message, prover side");
VerifySessionId(sessionID);
try
{
string tokenInformationParam = null;
string proverInformationParam = null;
// specify the attribute values agreed to by the Issuer and Prover
int numberOfAttributes = attributesParam.Length;
byte[][] attributes = new byte[numberOfAttributes][];
for (int i = 0; i < numberOfAttributes; i++)
{
attributes[i] = encoding.GetBytes(attributesParam[i]);
}
// specify the special field values
byte[] tokenInformation = (tokenInformationParam == null) ? new byte[] { } : encoding.GetBytes(tokenInformationParam);
byte[] proverInformation = (proverInformationParam == null) ? new byte[] { } : encoding.GetBytes(proverInformationParam);
// specify the number of tokens to issue
int numberOfTokens = numberOfTokensParam;
IssuerParameters ip = ConvertUtils.convertIssuerParametersComposite(ipc, sessionDB[sessionID]);
// Convert serializable FirstIssuanceMessageComposite members to FirstIssuanceMessage
FirstIssuanceMessage fi = ConvertUtils.convertFirstIssuanceMessageComposite(firstMessage, ip);
// setup the prover and generate the second issuance message
Prover prover = new Prover(ip, numberOfTokens, attributes, tokenInformation, proverInformation, sessionDB[sessionID].deviceManager.GetDevice());
// Store the prover in proversDictionary using the sessionKey as key
sessionDB[sessionID].prover = prover;
SecondIssuanceMessage sm = prover.GenerateSecondMessage(fi);
// Convert SecondIssuanceMessage members to serializable SecondIssuanceMessageComposite
SecondIssuanceMessageComposite smc = ConvertUtils.convertSecondIssuanceMessage(sm);
// Add the sessionKey to SecondIssuanceMessageComposite
smc.SessionKey = sessionID;
return smc;
}
catch (Exception e)
{
cOut.write(e.ToString());
DebugUtils.DebugPrint(e.StackTrace.ToString());
}
return null;
}
public void TestProver()
{
byte[][] A = new byte[][] { };
byte[] TI = null;
byte[] PI = null;
IssuerSetupParameters isp = new IssuerSetupParameters();
isp.UidP = new byte[] { 0 };
isp.E = new byte[] { 0 };
IssuerKeyAndParameters ikap = isp.Generate();
IssuerProtocolParameters ipp = new IssuerProtocolParameters(ikap);
ipp.Attributes = A;
ipp.NumberOfTokens = 1;
ipp.TokenInformation = TI;
Issuer issuer = ipp.CreateIssuer();
FirstIssuanceMessage msg1 = null;
SecondIssuanceMessage msg2 = null;
ThirdIssuanceMessage msg3 = null;
msg1 = issuer.GenerateFirstMessage();
try { new Prover(null, 1, A, TI, PI, null); Assert.Fail(); } catch (ArgumentNullException) { }
try { new Prover(ikap.IssuerParameters, -1, A, TI, PI, null); Assert.Fail(); } catch (ArgumentException) { }
try { new Prover(ikap.IssuerParameters, 0, A, TI, PI, null); Assert.Fail(); } catch (ArgumentException) { }
Prover prover = new Prover(ikap.IssuerParameters, 1, A, TI, PI, null);
try { prover.GenerateTokens(msg3); Assert.Fail(); } catch (InvalidOperationException) { }
msg2 = prover.GenerateSecondMessage(msg1);
try { msg2 = prover.GenerateSecondMessage(msg1); Assert.Fail(); } catch (InvalidOperationException) { }
msg3 = issuer.GenerateThirdMessage(msg2);
prover.GenerateTokens(msg3);
try { prover.GenerateTokens(msg3); Assert.Fail(); } catch (InvalidOperationException) { }
}
