C

ScMinidriver - PIN Authentication for Smart Card or USB Token

See more ScMinidriver Examples

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

#include <C_CkScMinidriver.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkScMinidriver scmd;
    const char *readerName;
    const char *cardName;
    const char *pinId;
    const char *pin;
    int retval;

    success = FALSE;

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

    scmd = CkScMinidriver_Create();

    // Reader names (smart card readers or USB tokens) can be discovered
    // via List Readers or Find Smart Cards
    readerName = "Alcor Micro USB Smart Card Reader 0";
    success = CkScMinidriver_AcquireContext(scmd,readerName);
    if (success == FALSE) {
        printf("%s\n",CkScMinidriver_lastErrorText(scmd));
        CkScMinidriver_Dispose(scmd);
        return;
    }

    // If we are successful, the name of the currently inserted smart card is available:
    cardName = CkScMinidriver_cardName(scmd);
    printf("Card name: %s\n",cardName);

    // 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.
    pinId = "user";

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

    retval = CkScMinidriver_PinAuthenticate(scmd,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) {
        printf("%s\n",CkScMinidriver_lastErrorText(scmd));
        CkScMinidriver_Dispose(scmd);
        return;
    }

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

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

    // You may deauthenticate the session when finished with operations that required authentication.
    success = CkScMinidriver_PinDeauthenticate(scmd,pinId);
    if (success == FALSE) {
        printf("%s\n",CkScMinidriver_lastErrorText(scmd));
    }

    // Delete the context when finished with the card.
    success = CkScMinidriver_DeleteContext(scmd);
    if (success == FALSE) {
        printf("%s\n",CkScMinidriver_lastErrorText(scmd));
    }



    CkScMinidriver_Dispose(scmd);

    }