(C#) ScMinidriver - Delete Smart Card Key Container

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Demonstrates how to delete the contents of a key container on a smart card (or USB token).

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

// Chilkat recommends the following free tool for interactively examining the contents of your smart card
// through the ScMinidriver interface:  MGTEK Tool for Minidriver enabled Smart Cards

// Let's first look at our smart card..
// Here's the view of the card we happen to be using: a Gemalto (Thales) IDPrime MD T=0 smart card.



Chilkat.ScMinidriver scmd = new Chilkat.ScMinidriver();

// First we need to acquire a context to the smart card in the reader where it is inserted.
// Reader names (smart card readers or USB tokens) can be discovered
// via List Readers or Find Smart Cards
string readerName = "Alcor Micro USB Smart Card Reader 0";
bool success = scmd.AcquireContext(readerName);
if (success == false) {
    Debug.WriteLine(scmd.LastErrorText);
    return;
}

// If successful, the name of the currently inserted smart card is available:
Debug.WriteLine("Card name: " + scmd.CardName);

// To delete the contents of a key container, we'll need to be PIN authenticated..

// For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
string pinId = "user";
int retval = scmd.PinAuthenticate(pinId,"0000");
if (retval != 0) {
    Debug.WriteLine("PIN Authentication failed.");
    scmd.DeleteContext();
    return;
}

// Let's delete the contents of key container #7
// This deletes both keys (signature key and "key exchange" key) that might be present in the key container.
// (It is not possible to delete just one or the other.)
success = scmd.DeleteKeyContainer(7);
if (success == false) {
    Debug.WriteLine(scmd.LastErrorText);
    scmd.DeleteContext();
    return;
}

scmd.DeleteContext();
Debug.WriteLine("Successfully delete the contents of key container #7");