static void ReadAndDisplayCardInfoFromPn532()
{
// Adjust the serial port or use I2C or SPI
var _nfc = new Pn532("COM4");
byte[] retData = null;
while (!Console.KeyAvailable)
{
// Polling only type B as Credit Cards are only this type
retData = _nfc.AutoPoll(5, 500, new PollingType[] { PollingType.Passive106kbpsISO144443_4B });
if (retData != null)
{
if (retData.Length > 1)
{
break;
}
}
// Give time to PN532 to process
Thread.Sleep(50);
}
if (retData.Length < 3)
{
throw new Exception($"No data available on the Credit Card, length of return buffer is less than 3");
}
//Check how many tags and the type
// Console.WriteLine($"Num tags: {retData[0]}, Type: {(PollingType)retData[1]}");
var decrypted = _nfc.TryDecodeData106kbpsTypeB(retData.AsSpan().Slice(3));
if (decrypted != null)
{
var creditCard = new CreditCard(_nfc, decrypted.TargetNumber);
ReadAndDisplayData(creditCard);
}
}
private static void ReadCreditCard(Pn532 pn532)
{
byte[] retData = null;
while ((!Console.KeyAvailable))
{
retData = pn532.AutoPoll(5, 300, new PollingType[] { PollingType.Passive106kbpsISO144443_4B });
if (retData != null)
{
if (retData.Length >= 3)
{
break;
}
}
// Give time to PN532 to process
Thread.Sleep(200);
}
if (retData == null)
{
return;
}
// Check how many tags and the type
Console.WriteLine($"Num tags: {retData[0]}, Type: {(PollingType)retData[1]}");
var decrypted = pn532.TryDecodeData106kbpsTypeB(retData.AsSpan().Slice(3));
if (decrypted != null)
{
Console.WriteLine(
$"{decrypted.TargetNumber}, Serial: {BitConverter.ToString(decrypted.NfcId)}, App Data: {BitConverter.ToString(decrypted.ApplicationData)}, " +
$"{decrypted.ApplicationType}, Bit Rates: {decrypted.BitRates}, CID {decrypted.CidSupported}, Command: {decrypted.Command}, FWT: {decrypted.FrameWaitingTime}, " +
$"ISO144443 compliance: {decrypted.ISO14443_4Compliance}, Max Frame size: {decrypted.MaxFrameSize}, NAD: {decrypted.NadSupported}");
CreditCard creditCard = new CreditCard(pn532, decrypted.TargetNumber);
creditCard.ReadCreditCardInformation();
Console.WriteLine("All Tags for the Credit Card:");
DisplayTags(creditCard.Tags, 0);
}
}
/// <summary>
/// Wait for the NFC reader to get the credit card data
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public ActionResult <JObject> GetNfcAuthentication(string id)
{
byte[] retData = null;
var ccAuth = new CreditCardAuthenticated();
dynamic resp = new JObject();
CreditCard creditCard = null;
try
{
if (_nfcWrapper.HasNfc)
{
// This try/catch allow this method to work on any machine, even if come does not work.
// So if it does not work (i.e. error caught, then a dummy object is returned)
DateTimeOffset timeout = DateTimeOffset.Now.AddMilliseconds(TimeOutNfcAuthenticationMillisecond);
while ((timeout > DateTimeOffset.Now))
{
// PollingType.InnovisionJewel, PollingType.DepActive106kbps, PollingType.DepPassive106kbps,PollingType.Passive106kbpsISO144443_4A, PollingType.Passive106kbpsISO144443_4A, PollingType.GenericPassive106kbps, PollingType.MifareCard, PollingType.Passive106kbps
retData = _nfc.AutoPoll(5, 300, new PollingType[] { PollingType.Passive106kbpsISO144443_4B });
if (retData != null)
{
break;
}
// Give time to PN532 to process
Thread.Sleep(50);
}
if (retData == null)
{
resp.status = false;
resp.value = "Could not read the card";
return(resp);
}
if (retData.Length < 3)
{
resp.status = false;
resp.value = "Could not read the card";
return(resp);
}
//Check how many tags and the type
// Console.WriteLine($"Num tags: {retData[0]}, Type: {(PollingType)retData[1]}");
var decrypted = _nfc.TryDecodeData106kbpsTypeB(retData.AsSpan().Slice(3));
if (decrypted != null)
{
//Console.WriteLine($"{decrypted.TargetNumber}, Serial: {BitConverter.ToString(decrypted.NfcId)}, App Data: {BitConverter.ToString(decrypted.ApplicationData)}, " +
// $"{decrypted.ApplicationType}, Bit Rates: {decrypted.BitRates}, CID {decrypted.CidSupported}, Command: {decrypted.Command}, FWT: {decrypted.FrameWaitingTime}, " +
// $"ISO144443 compliance: {decrypted.ISO14443_4Compliance}, Max Frame size: {decrypted.MaxFrameSize}, NAD: {decrypted.NadSupported}");
creditCard = new CreditCard(_nfc, decrypted.TargetNumber);
}
}
else if (_nfcWrapper.HasSmartCard)
{
DateTimeOffset timeout = DateTimeOffset.Now.AddMilliseconds(TimeOutNfcAuthenticationMillisecond);
while ((timeout > DateTimeOffset.Now))
{
if (_nfcWrapper.SmartCard.IsCardPResent)
{
creditCard = new CreditCard(_nfcWrapper.SmartCard, 0, 2);
break;
}
}
}
if (creditCard != null)
{
creditCard.ReadCreditCardInformation();
// Console.WriteLine("All Tags for the Credit Card:");
// Find 0x5A = PAN = Credit Card number
var ccForAuth = new CreditCardForAuthentication();
var searchedTag = Tag.SearchTag(creditCard.Tags, 0x5A);
if (searchedTag.Count > 0)
{
TagDetails tg = new TagDetails(searchedTag.FirstOrDefault());
ccForAuth.CardNumber = CleanText(tg.ToString());
// 0x59 expiration date
searchedTag = Tag.SearchTag(creditCard.Tags, 0x59);
if (searchedTag.Count == 0)
{
// 0x59 expiration date
searchedTag = Tag.SearchTag(creditCard.Tags, 0x5F24);
}
if (searchedTag.Count > 0)
{
tg = new TagDetails(searchedTag.FirstOrDefault());
ccForAuth.Expiration = new DateTimeOffset(2000 + BcdToInt(tg.Data[0]), BcdToInt(tg.Data[1]), BcdToInt(tg.Data[2]), 0, 0, 0, TimeSpan.Zero);
}
}
if (String.IsNullOrEmpty(ccForAuth.CardNumber))
{
// Find 0x57 Track2 if no 5A
searchedTag = Tag.SearchTag(creditCard.Tags, 0x57);
// The Date is encoded with a separated car like XX XX XX XX XX XX XX XX DY YM MX
if (searchedTag.Count > 0)
{
var data = searchedTag.FirstOrDefault().Data;
ccForAuth.CardNumber = BitConverter.ToString(data, 0, 8);
ccForAuth.CardNumber = CleanText(ccForAuth.CardNumber);
// The Date is encoded with a separated car like XX XX XX XX XX XX XX XX DY YM MX
var year = 2000 + BcdToInt((byte)(data[8] << 8 + (data[9] >> 8)));
var month = BcdToInt((byte)(data[9] << 8 + (data[10] >> 8)));
ccForAuth.Expiration = new DateTimeOffset(year, month, 1, 0, 0, 0, TimeSpan.Zero);
}
}
if (String.IsNullOrEmpty(ccForAuth.CardNumber))
{
resp.status = false;
resp.value = "No card number found";
return(resp);
}
// TODO: Call for the authentication
// http://bankioskapi.azurewebsites.net/api/customers/getbycard/5255591532318986
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(_apiUrl);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage response = client.GetAsync($"customers/getbycard/{ccForAuth.CardNumber}").GetAwaiter().GetResult();
if (response.IsSuccessStatusCode)
{
// Parse the response body.
var customer = response.Content.ReadAsAsync <Customer>().Result; //Make sure to add a reference to System.Net.Http.Formatting.dll
Debug.WriteLine($"Found customer {customer?.RowKey} {customer?.FirstName} {customer?.Surname}");
if (customer == null)
{
resp.status = false;
resp.value = "No customer with this card found";
return(resp);
}
// Do we really have someone?
if ((String.IsNullOrEmpty(customer.FirstName)) && (String.IsNullOrEmpty(customer.FirstName)))
{
resp.status = false;
resp.value = "No customer with this card found";
return(resp);
}
// Is it the same ID?
if (customer.RowKey.ToLower() != id.ToLower())
{
resp.status = false;
resp.value = "Customer id mismatch";
return(resp);
}
}
else
{
Debug.WriteLine($"Error {response.StatusCode} ({response.ReasonPhrase})");
resp.status = false;
resp.value = "Could not find a customer with this id - or the service failed";
return(resp);
}
// Let's assume we are authenticated
ccAuth.IsAuthenticated = true;
// Find all 0x9F36 tag Transaction count
searchedTag = Tag.SearchTag(creditCard.Tags, 0x9F36);
if (searchedTag.Count > 0)
{
ccAuth.NumberOperation = 0;
for (int i = 0; i < searchedTag.Count; i++)
{
ccAuth.NumberOperation = BinaryPrimitives.ReadUInt16BigEndian(searchedTag[i].Data);
}
}
// Find 0x9F17 PinTry Counter
searchedTag = Tag.SearchTag(creditCard.Tags, 0x9F17);
if (searchedTag.Count > 0)
{
ccAuth.PinRetryLeft = searchedTag.FirstOrDefault().Data[0];
}
ccAuth.ExpirationDate = ccForAuth.Expiration;
resp.status = true;
resp.value = JsonConvert.SerializeObject(ccAuth);
return(resp);
}
else
{
// No NFC => send dummy data
resp.status = true;
ccAuth.ExpirationDate = DateTimeOffset.Now.AddYears(2);
ccAuth.IsAuthenticated = true;
ccAuth.NumberOperation = 340;
ccAuth.PinRetryLeft = 2;
resp.value = JsonConvert.SerializeObject(ccAuth);
return(resp);
}
}
catch (Exception ex)
{
resp.status = false;
resp.value = $"Exception: {ex.ToString()}";
return(resp);
}
}
