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 static SecondIssuanceMessage convertSecondIssuanceMessageComposite(SecondIssuanceMessageComposite sic)
{
BigInteger[] biArray = new BigInteger[sic.SigmaC.Length];
for (int i = 0; i < biArray.Length; i++)
{
biArray[i] = new BigInteger(1, sic.SigmaC[i]);
}
SecondIssuanceMessage si = new SecondIssuanceMessage(biArray);
return(si);
}
public static SecondIssuanceMessageComposite convertSecondIssuanceMessage(SecondIssuanceMessage sm)
{
SecondIssuanceMessageComposite smc = new SecondIssuanceMessageComposite();
byte[][] byteArray1 = new byte[sm.sigmaC.Length][];
for (int i = 0; i < byteArray1.Length; i++)
{
byteArray1[i] = sm.sigmaC[i].ToByteArray();
}
smc.SigmaC = byteArray1;
return(smc);
}
public ThirdIssuanceMessageComposite getThirdMessage(SecondIssuanceMessageComposite secondMessage, string sessionID)
{
/*
* token issuance - generate third message
*/
cOut.write("Issuing U-Prove tokens - generate third message, issuer side");
VerifySessionId(sessionID);
try
{
// Convert serializable SecondIssuanceMessageComposite members to SecondIssuanceMessage
SecondIssuanceMessage si = ConvertUtils.convertSecondIssuanceMessageComposite(secondMessage);
// Get unique session key from SecondIssuanceMessageComposite for retrieving the correct Issuer instance from issuersDictionary
string sessionKey = secondMessage.SessionKey;
//VerifySessionId(sessionKey);
// Retrieve correct Issuer instance from issuersDictionary for the given sessionKey
if (sessionDB.ContainsKey(sessionID))
{
Issuer issuer = sessionDB[sessionID].issuer;
ThirdIssuanceMessage tim = issuer.GenerateThirdMessage(si);
// Convert ThirdIssuanceMessage members to serializable ThirdIssuanceMessageComposite
ThirdIssuanceMessageComposite timc = ConvertUtils.convertThirdIssuanceMessage(tim);
// Add the sessionKey to ThirdIssuanceMessageComposite
timc.SessionKey = sessionID;
return(timc);
}
}
catch (Exception e)
{
cOut.write(e.ToString());
DebugUtils.DebugPrint(e.StackTrace.ToString());
}
return(null);
}
public ThirdIssuanceMessageComposite getThirdMessage(SecondIssuanceMessageComposite secondMessage, string sessionID)
{
/*
* token issuance - generate third message
*/
cOut.write("Issuing U-Prove tokens - generate third message, issuer side");
VerifySessionId(sessionID);
try
{
// Convert serializable SecondIssuanceMessageComposite members to SecondIssuanceMessage
SecondIssuanceMessage si = ConvertUtils.convertSecondIssuanceMessageComposite(secondMessage);
// Get unique session key from SecondIssuanceMessageComposite for retrieving the correct Issuer instance from issuersDictionary
string sessionKey = secondMessage.SessionKey;
//VerifySessionId(sessionKey);
// Retrieve correct Issuer instance from issuersDictionary for the given sessionKey
if (sessionDB.ContainsKey(sessionID))
{
Issuer issuer = sessionDB[sessionID].issuer;
ThirdIssuanceMessage tim = issuer.GenerateThirdMessage(si);
// Convert ThirdIssuanceMessage members to serializable ThirdIssuanceMessageComposite
ThirdIssuanceMessageComposite timc = ConvertUtils.convertThirdIssuanceMessage(tim);
// Add the sessionKey to ThirdIssuanceMessageComposite
timc.SessionKey = sessionID;
return timc;
}
}
catch (Exception e)
{
cOut.write(e.ToString());
DebugUtils.DebugPrint(e.StackTrace.ToString());
}
return null;
}
public static SecondIssuanceMessage convertSecondIssuanceMessageComposite(SecondIssuanceMessageComposite sic)
{
BigInteger[] biArray = new BigInteger[sic.SigmaC.Length];
for (int i = 0; i < biArray.Length; i++)
{
biArray[i] = new BigInteger(1, sic.SigmaC[i]);
}
SecondIssuanceMessage si = new SecondIssuanceMessage(biArray);
return si;
}
public static SecondIssuanceMessageComposite convertSecondIssuanceMessage(SecondIssuanceMessage sm)
{
SecondIssuanceMessageComposite smc = new SecondIssuanceMessageComposite();
byte[][] byteArray1 = new byte[sm.sigmaC.Length][];
for (int i = 0; i < byteArray1.Length; i++)
{
byteArray1[i] = sm.sigmaC[i].ToByteArray();
}
smc.SigmaC = byteArray1;
return smc;
}