(C++) PC/SC Get Card UID

See more SCard Examples

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

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

void ChilkatSample(void)
    {
    // 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) {
        std::cout << scard.lastErrorText() << "\r\n";
        return;
    }

    // Use your own smart card reader name here.
    success = scard.Connect("ACS ACR122 0","shared","no_preference");
    if (success == false) {
        std::cout << scard.lastErrorText() << "\r\n";
        return;
    }

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

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

        std::cout << "Received: " << bdRecv.getEncoded("hex") << "\r\n";

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

    }
    else {
        std::cout << scard.lastErrorText() << "\r\n";
    }

    // Disconnect from this reader.
    success = scard.Disconnect("leave");
    if (success == false) {
        std::cout << scard.lastErrorText() << "\r\n";
    }

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