Unicode C++

PC/SC Get Card UID

See more SCard Examples

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

#include <CkSCardW.h>
#include <CkBinDataW.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkSCardW scard;

    // First establish a context to the PC/SC Resource Manager
    success = scard.EstablishContext(L"user");
    if (success == false) {
        wprintf(L"%s\n",scard.lastErrorText());
        return;
    }

    // Use your own smart card reader name here.
    success = scard.Connect(L"ACS ACR122 0",L"shared",L"no_preference");
    if (success == false) {
        wprintf(L"%s\n",scard.lastErrorText());
        return;
    }

    wprintf(L"Connected reader: %s\n",scard.connectedReader());
    wprintf(L"Active protocol: %s\n",scard.activeProtocol());
    wprintf(L"ATR: %s\n",scard.cardAtr());
    wprintf(L"Reader Status: %s\n",scard.readerStatus());

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

        wprintf(L"Received: %s\n",bdRecv.getEncoded(L"hex"));

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

    }
    else {
        wprintf(L"%s\n",scard.lastErrorText());
    }

    // Disconnect from this reader.
    success = scard.Disconnect(L"leave");
    if (success == false) {
        wprintf(L"%s\n",scard.lastErrorText());
    }

    // Applications should always release the context when finished.
    success = scard.ReleaseContext();
    if (success == false) {
        wprintf(L"%s\n",scard.lastErrorText());
    }
    }