C++

ScMinidriver - PIN Authentication for Smart Card or USB Token

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Demonstrates how to PIN authenticate with a connected smart card or USB token. C++

#include <CkScMinidriver.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  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";
    success = scmd.AcquireContext(readerName);
    if (success == false) {
        std::cout << scmd.lastErrorText() << "\r\n";
        return;
    }

    //  If we are successful, the name of the currently inserted smart card is available:
    const char *cardName = scmd.cardName();
    std::cout << "Card name: " << cardName << "\r\n";

    //  Perform regular PIN authentication with the smartcard.
    //  If authentication is successful, then the ScMinidriver session is authenticated and
    //  operations such as signing are permissible.

    //  The pin ID can be "user", "admin", or a number "3" through "7" (passed as a string).
    //  The possible pin ID's for a given smartcard are obtained via the GetCardProperties method.
    //  See Get Smart Card Properties for sample code.
    //  You should generally use the "user" pin ID.  You would only use the other pin ID's for very specific purposes.
    const char *pinId = "user";

    //  Change this to the PIN for your smart card.
    const char *pin = "0000";

    int retval = scmd.PinAuthenticate(pinId,pin);

    //  The return value is 0 for success.
    //  If the retval is greater than 0, it is the number of attempts remaining before the PIN is blocked.
    //  If the retval equals -1, then something else went wrong and you should consult the LastErrorText.
    if (retval < 0) {
        std::cout << scmd.lastErrorText() << "\r\n";
        return;
    }

    if (retval > 0) {
        std::cout << "PIN authentcation failed, " << retval << " attempts remaining before the PIN is blocked." << "\r\n";
    }
    else {
        std::cout << "PIN authentication successful. Your session is now authenticated and you may proceed with operations such as signing." << "\r\n";
    }

    //  ...
    //  ...
    //  ...

    //  You may deauthenticate the session when finished with operations that required authentication.
    success = scmd.PinDeauthenticate(pinId);
    if (success == false) {
        std::cout << scmd.lastErrorText() << "\r\n";
    }

    //  Delete the context when finished with the card.
    success = scmd.DeleteContext();
    if (success == false) {
        std::cout << scmd.lastErrorText() << "\r\n";
    }
    }