AutoIt

ScMinidriver - Find and Load Certificate from Smart Card or USB Token

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Demonstrates how to find and load a specific certificate located on a smart card or USB token. 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

; You can find a cerficate using any of the following certificate parts:
; "subjectDN" -- The full distinguished name of the cert.
; "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
; "subjectCN" -- The common name part (CN) of the certificate's subject.
; "serial" -- The certificate serial number.
; "serial:issuerCN" -- The certificate serial number + the issuer's common name, delimited with a colon char.
; These are the same certificate parts that can be retrieved by listing certificates on the smart card (or USB token).
; See List Certificates on Smart Card Example
Local $sCertPart = "subjectCN"
Local $sPartValue = "PIVKey E42D60A759D39147A26E0AF2FB1183C5"

; If the certificate is found, it is loaded into the cert object.
$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oScmd.FindCert($sCertPart,$sPartValue,$oCert)
If ($bSuccess = False) Then
    ConsoleWrite("Failed to find 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