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ScMinidriver - Load Certificate from Smart Card or USB Token by Index

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Demonstrates how to load a certificate located on a smart card or USB token by key container index. AutoIt

Local $bSuccess = False

; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.
$oScmd = ObjCreate("Chilkat.ScMinidriver")

; Reader names (smart card readers or USB tokens) can be discovered
; via List Readers or Find Smart Cards
Local $sReaderName = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0"
$bSuccess = $oScmd.AcquireContext($sReaderName)
If ($bSuccess = False) Then
    ConsoleWrite($oScmd.LastErrorText & @CRLF)
    Exit
EndIf

; If successful, the name of the currently inserted smart card is available:
ConsoleWrite("Card name: " & $oScmd.CardName & @CRLF)

; If desired, perform regular PIN authentication with the smartcard.
; For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
Local $iRetval = $oScmd.PinAuthenticate("user","000000")
If ($iRetval <> 0) Then
    ConsoleWrite("PIN Authentication failed." & @CRLF)
EndIf

$oCert = ObjCreate("Chilkat.Cert")
; We can pass a specific key container index, or -1 to locate the 1st non-empty container containing a certificate and private key.
Local $iKeyContainerIndex = -1
; keySpec can be "kex" or "sig" to indicate the key-exchange or signature position within the container.
; keySpec can also be "any" to accept either position, with preference given to the "sig" position if both are occupied.
Local $sKeySpec = "any"
$bSuccess = $oScmd.GetCert($iKeyContainerIndex,$sKeySpec,$oCert)
If ($bSuccess = False) Then
    ConsoleWrite("Failed to load the certificate." & @CRLF)
Else
    ConsoleWrite("Successfully loaded the cert object from the smart card / USB token." & @CRLF)

    ; Note: When successful, the cert object is internally linked to the ScMinidriver object's authenticated session.
    ; The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token.
    ; If your application calls PinDeauthenticate or DeleteContext, the cert will no longer be able to sign on the smart card
    ; because the smart card ScMinidriver session will no longer be authenticated or deleted.
EndIf

; ...
; ...
; ...

; When finished with operations that required authentication, you may if you wish, deauthenticate the session.
$bSuccess = $oScmd.PinDeauthenticate("user")
If ($bSuccess = False) Then
    ConsoleWrite($oScmd.LastErrorText & @CRLF)
EndIf

; Delete the context when finished with the card.
$bSuccess = $oScmd.DeleteContext()
If ($bSuccess = False) Then
    ConsoleWrite($oScmd.LastErrorText & @CRLF)
EndIf