private ApproverResponseBase DoQRCheckAuthStatus(ApproverRequestBase request)
{
return(new QRCodeApproverResponse()
{
IsApproved = true,
ResponseMessage = "Approved",
});
}
private ApproverResponseBase DoQRAuth(ApproverRequestBase requestIn)
{
return(new QRCodeApproverResponse()
{
IsApproved = true,
ResponseMessage = "Approved",
});
}
public ApproverResponseBase DoCheckAuthStatus(ApproverRequestBase request)
{
return(new EMVApproverResponse()
{
IsApproved = true,
ResponseMessage = "Approved Reversal By ContactlessDummyOnlineApprover"
});
}
public ApproverResponseBase DoReversal(ApproverRequestBase request, bool isOnline)
{
return(new EMVApproverResponse()
{
IsApproved = true,
ResponseMessage = "Approved Reversal By ContactlessDummyOnlineApprover"
});
}
public ApproverResponseBase DoAuth(ApproverRequestBase request)
{
return(new EMVApproverResponse()
{
IsApproved = true,
ResponseMessage = "Approved Auth By ContactlessDummyOnlineApprover"
});
}
public ApproverResponseBase DoCheckAuthStatus(ApproverRequestBase request)
{
if (request is EMVApproverRequest)
{
throw new NotImplementedException();
}
if (request is QRCodeApproverRequest)
{
return(DoQRCheckAuthStatus(request));
}
else
{
throw new NotImplementedException();
}
}
private ApproverResponseBase DoEMVAuth(ApproverRequestBase requestIn)
{
try
{
EMVApproverRequest request = ((EMVApproverRequest)requestIn);
DCEMVDemoServerClient client = SessionSingleton.GenDCEMVServerApiClient();
using (SessionSingleton.HttpClient)
{
ContactCardOnlineAuthRequest tx = new ContactCardOnlineAuthRequest()
{
EMV_Data = TLVasJSON.Convert(request.EMV_Data),
};
string responseJson = "";
Task.Run(async() => {
responseJson = await client.TransactionAuthtransactiontoissuerPostAsync(tx.ToJsonString());
}).Wait();
ContactCardOnlineAuthResponse response = ContactCardOnlineAuthResponse.FromJsonString(responseJson);
EMVApproverResponse approverResponse = null;
switch (response.Response)
{
case ContactCardOnlineAuthResponseEnum.Approved:
case ContactCardOnlineAuthResponseEnum.Declined:
approverResponse = new EMVApproverResponse();
approverResponse.AuthCode_8A = TLVasJSON.Convert(response.AuthCode_8A);
approverResponse.IssuerAuthData_91 = TLVasJSON.Convert(response.IssuerAuthData_91);
approverResponse.IsApproved = response.Response == ContactCardOnlineAuthResponseEnum.Approved ? true : false;
approverResponse.ResponseMessage = response.ResponseMessage;
break;
case ContactCardOnlineAuthResponseEnum.UnableToGoOnline:
break;
}
return(approverResponse);
}
}
catch
{
return(null);
}
}
private ApproverResponseBase DoEMVAuth(ApproverRequestBase requestIn)
{
EMVApproverRequest request = ((EMVApproverRequest)requestIn);
CryptoMetaData cryptoMetaData = EMVDESSecurity.BuildCryptoMeta(request.EMV_Data);
//Do additional checking here, e.g. customer balances etc
//if decline set isApproved to false
bool isApproved = true;
//do we want to send back a pin change script,
string newPin = "";// = "4315";
//decide whether to send 71 or 72 script template, 71 scripts applied before 2nd gen ac , 72 scripts applied after 2nd gen ac
bool doPinChangeBefore = false;
TLV _8A;
string responseMessage;
if (isApproved)
{
_8A = TLV.Create(EMVTagsEnum.AUTHORISATION_RESPONSE_CODE_8A_KRN.Tag, arcApproved);
responseMessage = "Approved";
}
else
{
_8A = TLV.Create(EMVTagsEnum.AUTHORISATION_RESPONSE_CODE_8A_KRN.Tag, arcDeclined);
responseMessage = "Declined";
}
TLV _91;
byte[] arpc;
//returns null if arqc cannot be verified
if (cryptoMetaData.CryptoVersion == CrptoVersionEnum._18)
{
arpc = EMVDESSecurity.VerifyCryptogramGenARPC(request.EMV_Data, cryptoMetaData, PackCSU());
}
else
{
arpc = EMVDESSecurity.VerifyCryptogramGenARPC(request.EMV_Data, cryptoMetaData, _8A.Value);
}
if (arpc != null)
{
_91 = Pack91(cryptoMetaData, arpc, _8A);// TLV.Create(EMVTagsEnum.ISSUER_AUTHENTICATION_DATA_91_KRN.Tag, Formatting.ConcatArrays(arpc, _8A.Value));
Logger.Log("Tx approved: " + isApproved + " ARQC passed, ARPC is " + Formatting.ByteArrayToHexString(arpc));
}
else
{
isApproved = false;
responseMessage = "Tx Declined: ARQC Failure";
_8A = TLV.Create(EMVTagsEnum.AUTHORISATION_RESPONSE_CODE_8A_KRN.Tag, new byte[] { 0x20, 0x20 });
_91 = Pack91(cryptoMetaData, arpc, _8A); //TLV.Create(EMVTagsEnum.ISSUER_AUTHENTICATION_DATA_91_KRN.Tag, new byte[8]);
Logger.Log("ARQC failed");
}
byte[] _86 = new byte[0];
//don't allow pin change if arqc could not be validated
if (!string.IsNullOrWhiteSpace(newPin) && arpc != null)
{
try
{
TLV _9F26 = request.EMV_Data.Children.Get(EMVTagsEnum.APPLICATION_CRYPTOGRAM_9F26_KRN.Tag);
if (_9F26 == null)
{
throw new Exception("No Cryptogram found");
}
//TODO: for mchip we must increment the arqc by one for each subsequent command created
_86 = EMVDESSecurity.CalculatePinChangeScript(request.EMV_Data, cryptoMetaData, newPin, _9F26.Value);
}
catch
{
_86 = new byte[0];
}
}
TLV _71TLV;
TLV _72TLV;
if (doPinChangeBefore)
{
_71TLV = TLV.Create(EMVTagsEnum.ISSUER_SCRIPT_TEMPLATE_1_71_KRN.Tag);
_71TLV.Deserialize(Formatting.ConcatArrays(new byte[] { 0x71, (byte)_86.Length }, _86), 0);
_72TLV = TLV.Create(EMVTagsEnum.ISSUER_SCRIPT_TEMPLATE_2_72_KRN.Tag);
_72TLV.Deserialize(Formatting.ConcatArrays(new byte[] { 0x72, 0x00 }, new byte[0]), 0);
}
else
{
_72TLV = TLV.Create(EMVTagsEnum.ISSUER_SCRIPT_TEMPLATE_2_72_KRN.Tag);
_72TLV.Deserialize(Formatting.ConcatArrays(new byte[] { 0x72, (byte)_86.Length }, _86), 0);
_71TLV = TLV.Create(EMVTagsEnum.ISSUER_SCRIPT_TEMPLATE_1_71_KRN.Tag);
_71TLV.Deserialize(Formatting.ConcatArrays(new byte[] { 0x71, 0x00 }, new byte[0]), 0);
}
return(new EMVApproverResponse()
{
IsApproved = isApproved,
ResponseMessage = responseMessage,
AuthCode_8A = _8A,
IssuerAuthData_91 = _91,
IssuerScriptTemplate_72 = _72TLV,
IssuerScriptTemplate_71 = _71TLV,
});
}
public ApproverResponseBase DoAdvice(ApproverRequestBase request, bool isOnline)
{
throw new NotImplementedException();
}
public ApproverResponseBase DoCheckAuthStatus(ApproverRequestBase request)
{
throw new NotImplementedException();
}
private ApproverResponseBase DoQRAuth(ApproverRequestBase requestIn)
{
throw new NotImplementedException();
}
public ApproverResponseBase DoAuth(ApproverRequestBase requestIn)
{
bool isMagStripe;
EMVApproverRequest request = ((EMVApproverRequest)requestIn);
TLV cryptogram = request.EMV_Data.Children.Get(EMVTagsEnum.CRYPTOGRAM_INFORMATION_DATA_9F27_KRN.Tag);
if (cryptogram != null)
{
isMagStripe = false;
}
else
{
isMagStripe = true;
}
TransactionTypeEnum tt = (TransactionTypeEnum)Formatting.GetEnum(typeof(TransactionTypeEnum), request.EMV_Data.Children.Get(EMVTagsEnum.TRANSACTION_TYPE_9C_KRN.Tag).Value[0]);
TransactionBase np;
switch (tt)
{
case TransactionTypeEnum.PurchaseGoodsAndServices:
np = new F00_NormalPurchase();
break;
case TransactionTypeEnum.PurchaseWithCashback:
np = new F08_PurchaseWithCashBack();
break;
case TransactionTypeEnum.Refund:
np = new F12_MerchandiseReturnAdjustment();
break;
default:
throw new Exception("Unimplemented TransactionTypeEnum:" + tt);
}
np.SetHeaderValues(SPDHTransactionCode.NormalPurchase, SPDHMessageType.FinancialTransaction, SPDHMessageSubType.Online, DateTime.Now, "300047", "");
np.Fids.Add(new FID_B_Amount1(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.AMOUNT_AUTHORISED_NUMERIC_9F02_KRN.Tag).Value)));
FIDBase fb_6 = new FIDBase('6', ' ', new byte[0]);
np.Fids.Add(fb_6);
if (tt == TransactionTypeEnum.PurchaseWithCashback || tt == TransactionTypeEnum.Refund)
{
np.Fids.Add(new FID_C_Amount2(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.AMOUNT_OTHER_NUMERIC_9F03_KRN.Tag).Value)));
}
if (isMagStripe)
{
np.Fids.Add(new FID_q_Track2_Customer(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TRACK_2_DATA_9F6B_KRN2.Tag).Value)));
fb_6.Children.Add(new FID_6_I_TransactionCurrencyCode(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TRANSACTION_CURRENCY_CODE_5F2A_KRN.Tag).Value)));
fb_6.Children.Add(new FID_6_E_POSEntryMode(Formatting.ConvertToHexAscii(new byte[] { 0x91 })));
}
else
{
np.Fids.Add(new FID_q_Track2_Customer(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TRACK_2_EQUIVALENT_DATA_57_KRN.Tag).Value)));
fb_6.Children.Add(new FID_6_I_TransactionCurrencyCode(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TRANSACTION_CURRENCY_CODE_5F2A_KRN.Tag).Value)));
//fb_6.Children.Add(new FID_6_E_POSEntryMode(Formatting.ConvertToHexAscii(new byte[] { 0x07 })));
fb_6.Children.Add(new FID_6_E_POSEntryMode(Formatting.ASCIIStringToByteArray("051")));
}
if (!isMagStripe)
{
List <byte[]> fidBytes = new List <byte[]>();
byte[] smartCardScheme = new byte[] { 0x30, 0x31 };
fidBytes.Add(smartCardScheme);
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.CRYPTOGRAM_INFORMATION_DATA_9F27_KRN.Tag).Value));
fidBytes.Add(Formatting.ASCIIStringToByteArray(Formatting.ByteArrayToHexString(request.EMV_Data.Children.Get(EMVTagsEnum.TERMINAL_COUNTRY_CODE_9F1A_KRN.Tag).Value).Substring(1)));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TRANSACTION_DATE_9A_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.APPLICATION_CRYPTOGRAM_9F26_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.APPLICATION_INTERCHANGE_PROFILE_82_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.APPLICATION_TRANSACTION_COUNTER_ATC_9F36_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.UNPREDICTABLE_NUMBER_9F37_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TERMINAL_VERIFICATION_RESULTS_95_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TRANSACTION_TYPE_9C_KRN.Tag).Value));
fidBytes.Add(Formatting.ASCIIStringToByteArray(Formatting.ByteArrayToHexString(request.EMV_Data.Children.Get(EMVTagsEnum.TRANSACTION_CURRENCY_CODE_5F2A_KRN.Tag).Value).Substring(1)));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.AMOUNT_AUTHORISED_NUMERIC_9F02_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.ISSUER_APPLICATION_DATA_9F10_KRN.Tag).Value));
fb_6.Children.Add(new FID_6_O_EMVRequestData(fidBytes.SelectMany(x => x).ToArray()));
fidBytes = new List <byte[]>();
fidBytes.Add(smartCardScheme);
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.APPLICATION_PRIMARY_ACCOUNT_NUMBER_PAN_SEQUENCE_NUMBER_5F34_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.TERMINAL_TYPE_9F35_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.CARDHOLDER_VERIFICATION_METHOD_CVM_RESULTS_9F34_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.APPLICATION_VERSION_NUMBER_TERMINAL_9F09_KRN.Tag).Value));
fidBytes.Add(Formatting.ConvertToHexAscii(request.EMV_Data.Children.Get(EMVTagsEnum.DEDICATED_FILE_DF_NAME_84_KRN.Tag).Value));
fb_6.Children.Add(new FID_6_P_EMVAdditionalRequestData(fidBytes.SelectMany(x => x).ToArray()));
}
Logger.Log(np.ToPrintString());
bool check = np.Validate();
byte[] received;
using (request.TCPClientStream)
{
request.TCPClientStream.Connect(host, port);
received = TCPIPManager.SendTransaction(request.TCPClientStream, np.Serialize());
}
int pos = 0;
TransactionBase fb;
switch (tt)
{
case TransactionTypeEnum.PurchaseGoodsAndServices:
fb = new F00_NormalPurchase();
break;
case TransactionTypeEnum.PurchaseWithCashback:
fb = new F08_PurchaseWithCashBack();
break;
case TransactionTypeEnum.Refund:
fb = new F12_MerchandiseReturnAdjustment();
break;
default:
throw new Exception("Unimplemented TransactionTypeEnum:" + tt);
}
pos = fb.Deserialize(received, pos);
Logger.Log(fb.ToPrintString());
FIDBase responseMessageFid = fb.FindFid(FidMetaList.ResponseDisplay).Get();
string responseMessage = Formatting.ByteArrayToASCIIString(responseMessageFid.Value);
bool responseCode;
int responseCodeAsNumber = Convert.ToInt32(Formatting.ByteArrayToASCIIString(fb.Header.GetValue(HeaderEntryEnum.ResponseCode)));
if (responseCodeAsNumber >= 0 && responseCodeAsNumber <= 10)
{
responseCode = true;
}
else
{
responseCode = false;
}
FIDBase responseMessage6QFid = fb.FindFid(FidMetaList.EMVResponseData).Get();
string responseMessage6Q = Formatting.ByteArrayToASCIIString(responseMessage6QFid.Value);
string smartCardSchemeResponse = responseMessage6Q.Substring(0, 2);
string authResponseCode = "";
string issuerAuthData;
if (smartCardSchemeResponse == "00") //schem 1
{
issuerAuthData = responseMessage6Q.Substring(2);
}
else //01 == schem 2
{
authResponseCode = responseMessage6Q.Substring(2, 2);
issuerAuthData = responseMessage6Q.Substring(4);
}
TLV authcodeTLV = null;
if (!String.IsNullOrEmpty(authResponseCode))
{
authcodeTLV = TLV.Create(EMVTagsEnum.AUTHORISATION_RESPONSE_CODE_8A_KRN.Tag, Formatting.ASCIIStringToByteArray(authResponseCode));
}
TLV issuerAuthDataTLV = TLV.Create(EMVTagsEnum.ISSUER_AUTHENTICATION_DATA_91_KRN.Tag, Formatting.HexStringToByteArray(issuerAuthData));
return(new EMVApproverResponse()
{
IsApproved = responseCode,
ResponseMessage = responseMessage,
AuthCode_8A = authcodeTLV,
IssuerAuthData_91 = issuerAuthDataTLV
});
}
