(PHP ActiveX) Find Certificate by Email Address

Locate the certificate containing the specified email address in either the RFC822 Name or the Subject.

Note: This example requires Chilkat v10.1.2 or later.

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");

// This opens the Current User certificate store on Windows,
// On MacOS and iOS it opens the default Keychain.
$readOnly = 1;
$success = $certStore->OpenCurrentUserStore($readOnly);
if ($success == 0) {
    print $certStore->LastErrorText . "\n";
    exit;
}

// Locate the certificate containing the specified email address in either the RFC822 Name or the Subject.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$json = new COM("Chilkat.JsonObject");
$email_address = 'harold@example.com';
$json->UpdateString('email',$email_address);

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$cert = new COM("Chilkat.Cert");
$success = $certStore->FindCert($json,$cert);
if ($success == 1) {
    // Show the full distinguished name of the certificate.
    print 'Found: ' . $cert->SubjectDN . "\n";
}
else {
    print 'Not found.' . "\n";
}


?>