(MFC) PC/SC Get Card UID

See more SCard Examples

Sends the APDU command to get a card's UID.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkSCard.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkSCard scard;

    // First establish a context to the PC/SC Resource Manager
    bool success = scard.EstablishContext("user");
    if (success == false) {
        strOut.append(scard.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Use your own smart card reader name here.
    success = scard.Connect("ACS ACR122 0","shared","no_preference");
    if (success == false) {
        strOut.append(scard.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("Connected reader: ");
    strOut.append(scard.connectedReader());
    strOut.append("\r\n");
    strOut.append("Active protocol: ");
    strOut.append(scard.activeProtocol());
    strOut.append("\r\n");
    strOut.append("ATR: ");
    strOut.append(scard.cardAtr());
    strOut.append("\r\n");
    strOut.append("Reader Status: ");
    strOut.append(scard.readerStatus());
    strOut.append("\r\n");

    //  Send the APDU command 0xFF, 0xCA, 0x00, 0x00, 0x00
    CkBinData bdRecv;
    success = scard.TransmitHex(scard.activeProtocol(),"FFCA000000",bdRecv,32);
    if (success == true) {

        strOut.append("Received: ");
        strOut.append(bdRecv.getEncoded("hex"));
        strOut.append("\r\n");

        // The UID is the returned data without the final 2 bytes.
        int numBytes = bdRecv.get_NumBytes();
        if (numBytes > 2) {
            strOut.append("UID: ");
            strOut.append(bdRecv.getEncodedChunk(0,numBytes - 2,"hex"));
            strOut.append("\r\n");
        }

    }
    else {
        strOut.append(scard.lastErrorText());
        strOut.append("\r\n");
    }

    // Disconnect from this reader.
    success = scard.Disconnect("leave");
    if (success == false) {
        strOut.append(scard.lastErrorText());
        strOut.append("\r\n");
    }

    // Applications should always release the context when finished.
    success = scard.ReleaseContext();
    if (success == false) {
        strOut.append(scard.lastErrorText());
        strOut.append("\r\n");
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }