(PowerShell) 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.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.
$scmd = New-Object Chilkat.ScMinidriver

# Reader names (smart card readers or USB tokens) can be discovered
# via List Readers or Find Smart Cards
$readerName = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0"
$success = $scmd.AcquireContext($readerName)
if ($success -eq $false) {
    $($scmd.LastErrorText)
    exit
}

# If successful, the name of the currently inserted smart card is available:
$("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
$retval = $scmd.PinAuthenticate("user","000000")
if ($retval -ne 0) {
    $("PIN Authentication failed.")
}

$cert = New-Object 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.
$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.
$keySpec = "any"
$success = $scmd.GetCert($keyContainerIndex,$keySpec,$cert)
if ($success -eq $false) {
    $("Failed to load the certificate.")
}
else {
    $("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.
}

# ...
# ...
# ...

# When finished with operations that required authentication, you may if you wish, deauthenticate the session.
$success = $scmd.PinDeauthenticate("user")
if ($success -eq $false) {
    $($scmd.LastErrorText)
}

# Delete the context when finished with the card.
$success = $scmd.DeleteContext()
if ($success -eq $false) {
    $($scmd.LastErrorText)
}