(PowerShell) Find Certificate on Smartcard Currenty in Reader

Finds the certificates on smartcards currently in readers.

Note: This example requires Chilkat v9.5.0.77 or greater.

Chilkat .NET Downloads Chilkat .NET Assemblies

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

# This newer example is a much better way to get the certificate on a smartcard or USB token

# This example requires that we already know the name of the CSP (Cryptographic Service Provider) for the smartcard.
# It is often the "Microsoft Base Smart Card Crypto Provider".  You can see what CSP's are registered on your system with this code:

$csp = New-Object Chilkat.Csp
$st = New-Object Chilkat.StringTable

$success = $csp.GetProviders($st)
if ($success -eq $false) {
    $($csp.LastErrorText)
    exit
}

# Iterate over the CSP names..
$i = 0
$numProviders = $st.Count
while ($i -lt $numProviders) {
    $([string]$i + ": " + $st.StringAt($i))
    $i = $i + 1
}

# --------------------------
# This newer example is a much better way to get the certificate on a smartcard or USB token

# We'll assume our smartcard is accessed through the "Microsoft Base Smart Card Crypto Provider"
# Also, we'll assume that the certificate has been installed into the default current user Windows
# certificate store by following the instructions provided by the smartcard vendor.
# (The certificate does not contain the private key.  The certificate should be installed in the
# Windows current user certificate store.  It will also be on the smartcard, and the associated private
# key is only on the smartcard.)
# 

# First open the Current User Certificate Store.  We'll need it soon..
$certStore = New-Object Chilkat.CertStore
$success = $certStore.OpenCurrentUserStore($true)
if ($success -eq $false) {
    $($certStore.LastErrorText)
    exit
}

# Create a Csp object and set the ProviderName equal to our desired CSP name.
# (setting the ProviderName selects the desired CSP.)
$csp.ProviderName = "Microsoft Base Smart Card Crypto Provider"

# Iterate over the key containers managed by this CSP.
# These will be the key containers for the cards currently inserted into the reader(s).
# If only one smartcard reader exists, and a smartcard is inserted, there should be one
# key container.
$numContainers = $csp.NumKeyContainers

$("numContainers = " + $numContainers)

$i = 0
while ($i -lt $numContainers) {
    # For each key container, get the key container name and then find the certificate
    # in the Current User Certicate Store with the matching key container name.
    $keyContainerName = $csp.NthKeyContainerName($i)

    $cert = $certStore.FindCertByKeyContainer($keyContainerName)
    if ($certStore.LastMethodSuccess -eq $true) {
        $("Certificate in reader: " + $cert.SubjectCN)

    }

    $i = $i + 1
}