Visual Basic 6.0

ScMinidriver - Import a Certificate and Private Key to a Smart Card or USB Token

See more ScMinidriver Examples

Demonstrates how to import a certificate and its private key to a key container on a smart card or USB token.

Note: This functionality was introduced in Chilkat v9.5.0.87.

Note: The ScMinidriver functionality is for Windows-only because ScMinidriver DLLs only exist on Windows.

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.

Dim scmd As New ChilkatScMinidriver

' Reader names (smart card readers or USB tokens) can be discovered
' via List Readers or Find Smart Cards
Dim readerName As String
readerName = "SCM Microsystems Inc. SCR33x 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 cert + 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,"000000")
If (retval <> 0) Then
    Debug.Print "PIN Authentication failed."
    success = scmd.DeleteContext()
    Exit Sub
End If

Dim cert As New ChilkatCert

' Load the cert + private key from a .p12/.pfx
' We got this .p12 from https://badssl.com/download/
Dim password As String
password = "badssl.com"
success = cert.LoadPfxFile("qa_data/pfx/badssl.com-client.p12",password)
If (success = 0) Then
    Debug.Print cert.LastErrorText
    success = scmd.DeleteContext()
    Exit Sub
End If

' Let's import this certificate as the "signature" key/cert in key container #6.
Dim containerIndex As Long
containerIndex = 6
Dim keySpec As String
keySpec = "sig"
success = scmd.ImportCert(cert,containerIndex,keySpec,pinId)
If (success = 0) Then
    Debug.Print scmd.LastErrorText
Else
    Debug.Print "Successfully imported the cert + private key onto the smart card."
End If

' When finished with operations that required authentication, you may if you wish, deauthenticate the session.
success = scmd.PinDeauthenticate("user")
If (success = 0) Then
    Debug.Print scmd.LastErrorText
End If

' Delete the context when finished with the card.
success = scmd.DeleteContext()
If (success = 0) Then
    Debug.Print scmd.LastErrorText
End If