Visual Basic 6.0

ScMinidriver - Import Private Key to Smart Card

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Demonstrates how to import a private key to the "signature" or "key exchange" location in the Nth key container on a smart card. Visual Basic 6.0

Dim success As Long
success = 0

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

' Chilkat recommends the following free tool for interactively examining the contents of your smart card
' through the ScMinidriver interface:  MGTEK Tool for Minidriver enabled Smart Cards

' Let's first look at our smart card before importing a private key.
' Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:

' (image:https://example-code.com/images/gemalto_idprime_md_t0.JPG/endImage)

' First let's load a private key into the Chilkat private key object.
' (Chilkat provides the ability to load private keys from many different sources and formats.
' this example loads from a PEM file.)
Dim privKey As New PrivateKey
success = privKey.LoadPemFile("qa_data/rsa/rsaPrivKey_pkcs8.pem")
If (success = 0) Then
    Debug.Print privKey.LastErrorText
    Exit Sub
End If

Dim scmd As New ChilkatScMinidriver

' First we need to acquire a context to the smart card in the reader where it is inserted.
' Reader names (smart card readers or USB tokens) can be discovered
' via List Readers or Find Smart Cards
Dim readerName As String
readerName = "Alcor Micro USB Smart Card Reader 0"
success = scmd.AcquireContext(readerName)
If (success = 0) Then
    Debug.Print scmd.LastErrorText
    Exit Sub
End If

' If successful, the name of the currently inserted smart card is available:
Debug.Print "Card name: " & scmd.CardName

' To import a private key, we'll need to be PIN authenticated.
' For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
Dim pinId As String
pinId = "user"
Dim retval As Long
retval = scmd.PinAuthenticate(pinId,"0000")
If (retval <> 0) Then
    Debug.Print "PIN Authentication failed."
    success = scmd.DeleteContext()
    Exit Sub
End If

' Let's import into the "key exchange" position in key container #7.
success = scmd.ImportKey(7,"kex",privKey,"user")
If (success = 0) Then
    Debug.Print "PIN Authentication failed."
    success = scmd.DeleteContext()
    Exit Sub
End If

success = scmd.DeleteContext()

Debug.Print "Success."

' Here's the MGTEK view of the smart card after importing the private key:
' (image:https://example-code.com/images/gemalto_idprime_after_key_import.JPG/endImage)