Visual FoxPro

ScMinidriver - Change Smart Card PIN (or USB token PIN)

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Demonstrates how to change the PIN for a smart card or USB token. Visual FoxPro

LOCAL lnSuccess
LOCAL loScmd
LOCAL lcReaderName
LOCAL lcCurrentPin
LOCAL lcNewPin
LOCAL lnRetval

lnSuccess = 0

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

loScmd = CreateObject('Chilkat.ScMinidriver')

* Reader names (smart card readers or USB tokens) can be discovered
* via List Readers or Find Smart Cards
lcReaderName = "Alcor Micro USB Smart Card Reader 0"
lnSuccess = loScmd.AcquireContext(lcReaderName)
IF (lnSuccess = 0) THEN
    ? loScmd.LastErrorText
    RELEASE loScmd
    CANCEL
ENDIF

* If successful, the name of the currently inserted smart card is available:
? "Card name: " + loScmd.CardName

* Change the "user" PIN.  (Typically, you'll always be using the "user" PIN.)
lcCurrentPin = "0000"
lcNewPin = "1234"
lnRetval = loScmd.PinChange("user",lcCurrentPin,lcNewPin)
IF (lnRetval = -1) THEN
    ? "The PIN is already blocked."
    RELEASE loScmd
    CANCEL
ENDIF

IF (lnRetval = -2) THEN
    ? "The PinChange function failed for some unanticipated reason"
    ? loScmd.LastErrorText
    RELEASE loScmd
    CANCEL
ENDIF

IF (lnRetval = 0) THEN
    ? "PIN successfully changed."
ELSE
    ? "Current PIN is incorrect."
    ? "Number of attempts remaining = " + STR(lnRetval)
ENDIF

loScmd.DeleteContext()

RELEASE loScmd