(MFC) ScMinidriver - Change Smart Card PIN (or USB token PIN)

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Demonstrates how to change the PIN for a smart card or USB token.

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

See Also: Using MFC CString in Chilkat

#include <CkScMinidriver.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkScMinidriver scmd;

    // Reader names (smart card readers or USB tokens) can be discovered
    // via List Readers or Find Smart Cards
    const char *readerName = "Alcor Micro USB Smart Card Reader 0";
    bool success = scmd.AcquireContext(readerName);
    if (success == false) {
        strOut.append(scmd.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // If successful, the name of the currently inserted smart card is available:
    strOut.append("Card name: ");
    strOut.append(scmd.cardName());
    strOut.append("\r\n");

    // Change the "user" PIN.  (Typically, you'll always be using the "user" PIN.)
    const char *currentPin = "0000";
    const char *newPin = "1234";
    int retval = scmd.PinChange("user",currentPin,newPin);
    if (retval == -1) {
        strOut.append("The PIN is already blocked.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    if (retval == -2) {
        strOut.append("The PinChange function failed for some unanticipated reason");
        strOut.append("\r\n");
        strOut.append(scmd.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    if (retval == 0) {
        strOut.append("PIN successfully changed.");
        strOut.append("\r\n");
    }
    else {
        strOut.append("Current PIN is incorrect.");
        strOut.append("\r\n");
        strOut.append("Number of attempts remaining = ");
        strOut.appendInt(retval);
        strOut.append("\r\n");
    }

    scmd.DeleteContext();


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }