(MFC) Validate a Smartcard PIN

Validates a smartcard PIN. This example only runs on Windows and requires Chilkat v9.5.0.77 or greater.

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

See Also: Using MFC CString in Chilkat

#include <CkCert.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // Note: Requires Chilkat v9.5.0.77 or greater.

    CkCert cert;

    // Load the certificate on the smartcard currently in the reader (or on the USB token).
    // Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
    // See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
    bool success = cert.LoadFromSmartcard("");
    if (success != true) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    cert.put_SmartCardPin("000000");

    // Check to see if the SmartCardPin property contains the valid PIN for the smartcard.
    int pinValid = cert.CheckSmartCardPin();
    if (pinValid < 0) {
        strOut.append("Unable to check the PIN validity.");
        strOut.append("\r\n");
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    if (pinValid == 1) {
        strOut.append("PIN is valid.");
        strOut.append("\r\n");
    }
    else {
        strOut.append("PIN is invalid.");
        strOut.append("\r\n");
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }