(C#) Validate a Smartcard PIN

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

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

Chilkat.Cert cert = new Chilkat.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) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

cert.SmartCardPin = "000000";

// Check to see if the SmartCardPin property contains the valid PIN for the smartcard.
int pinValid = cert.CheckSmartCardPin();
if (pinValid < 0) {
    Debug.WriteLine("Unable to check the PIN validity.");
    Debug.WriteLine(cert.LastErrorText);
    return;
}

if (pinValid == 1) {
    Debug.WriteLine("PIN is valid.");
}
else {
    Debug.WriteLine("PIN is invalid.");
}