(PHP ActiveX) Backup Windows Current User / Personal Certificates to a .zip

Demonstrates how to backup the certificates in the Windows registry-based Current User certificate store (in the "Personal" Logical Store as seen in certmgr.msc), to a zip archive. Certificates having an exportable private key are exported to .pfx files. Certificates with no private key, or with a non-exportable private key, are exported to .cer files.

Obviously, this example only runs on Windows computers.

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.CertStore')
$certStore = new COM("Chilkat.CertStore");

$readOnly = 1;
$success = $certStore->OpenCurrentUserStore($readOnly);
if (!$success) {
    print $certStore->LastErrorText . "\n";
    exit;
}

$pfxPassword = 'secret';

$allSuccess = 1;
$numSuccess = 0;

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Zip')
$zip = new COM("Chilkat.Zip");
$zip->NewZip('qa_output/personalCerts.zip');

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$certData = new COM("Chilkat.BinData");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbFilename = new COM("Chilkat.StringBuilder");

// Iterate over the certificates in the Current User store.
$numCerts = $certStore->NumCertificates;
$i = 0;
while ($i < $numCerts) {
    // cert is a Chilkat.Cert
    $cert = $certStore->GetCertificate($i);
    print 'DN = ' . $cert->SubjectDN . "\n";

    $sbFilename->SetString('cert');
    $sbFilename->AppendInt($i + 1);

    $bHasPrivateKey = $cert->HasPrivateKey();
    if (($bHasPrivateKey == 1) and ($cert->PrivateKeyExportable == 1)) {
        // Export to a .pfx
        $success = $cert->ExportToPfxBd($pfxPassword,1,$certData);
        if ($success == 1) {
            $sbFilename->Append('.pfx');
            // entry is a Chilkat.ZipEntry
            $entry = $zip->AppendBd($sbFilename->getAsString(),$certData);

        }

    }
    else {
        // Export to a .cer
        $success = $cert->ExportCertDerBd($certData);
        if ($success == 1) {
            $sbFilename->Append('.cer');
            // entry is a Chilkat.ZipEntry
            $entry = $zip->AppendBd($sbFilename->getAsString(),$certData);

        }

    }

    if ($success != 1) {
        $allSuccess = 0;
    }
    else {
        $numSuccess = $numSuccess + 1;
    }

    $i = $i + 1;
}

if ($numSuccess > 0) {
    $success = $zip->WriteZipAndClose();
    if ($success != 1) {
        print $zip->LastErrorText . "\n";
        $allSuccess = 0;
    }

}

print 'All success = ' . $allSuccess . "\n";

?>