(PHP ActiveX) 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 ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// 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:

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Csp')
$csp = new COM("Chilkat.Csp");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringTable')
$st = new COM("Chilkat.StringTable");

$success = $csp->GetProviders($st);
if ($success == 0) {
    print $csp->LastErrorText . "\n";
    exit;
}

// Iterate over the CSP names..
$i = 0;
$numProviders = $st->Count;
while ($i < $numProviders) {
    print $i . ': ' . $st->stringAt($i) . "\n";
    $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..
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.CertStore')
$certStore = new COM("Chilkat.CertStore");
$success = $certStore->OpenCurrentUserStore(1);
if ($success == 0) {
    print $certStore->LastErrorText . "\n";
    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;

print 'numContainers = ' . $numContainers . "\n";

$i = 0;
while ($i < $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 is a Chilkat.Cert
    $cert = $certStore->FindCertByKeyContainer($keyContainerName);
    if ($certStore->LastMethodSuccess == 1) {
        print 'Certificate in reader: ' . $cert->SubjectCN . "\n";

    }

    $i = $i + 1;
}


?>