Xojo Plugin

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

See more ScMinidriver Examples

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

Dim success As Boolean
success = False

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
Dim scmd As New Chilkat.ScMinidriver

// 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 = False) Then
    System.DebugLog(scmd.LastErrorText)
    Return
End If

// If successful, the name of the currently inserted smart card is available:
System.DebugLog("Card name: " + scmd.CardName)

// If desired, perform regular PIN authentication with the smartcard.
// For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
Dim retval As Int32
retval = scmd.PinAuthenticate("user","000000")
If (retval <> 0) Then
    System.DebugLog("PIN Authentication failed.")
End If

Dim cert As New 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.
Dim keyContainerIndex As Int32
keyContainerIndex = -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.
Dim keySpec As String
keySpec = "any"
success = scmd.GetCert(keyContainerIndex,keySpec,cert)
If (success = False) Then
    System.DebugLog("Failed to load the certificate.")
Else
    System.DebugLog("Successfully loaded the cert object from the smart card / USB token.")

    // 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.
End If

// ...
// ...
// ...

// When finished with operations that required authentication, you may if you wish, deauthenticate the session.
success = scmd.PinDeauthenticate("user")
If (success = False) Then
    System.DebugLog(scmd.LastErrorText)
End If

// Delete the context when finished with the card.
success = scmd.DeleteContext()
If (success = False) Then
    System.DebugLog(scmd.LastErrorText)
End If