PHP ActiveX

Use a PEM TLS Client Certificate

Demonstrates the Chilkat MailMan.SetSslClientCertPem method, which sets the client-side certificate for SSL/TLS connections, loading it from PEM data or from a PEM file. The first argument may contain the PEM text itself or a path to a PEM file; the second is the PEM password. This example loads the client certificate from a PEM file.

Background: PEM is the familiar Base64 text format bracketed by -----BEGIN CERTIFICATE----- lines, and a single PEM can hold both a certificate and its (optionally encrypted) private key. It is the common format in Unix/OpenSSL environments, whereas PFX is more typical on Windows. Because this method accepts either the PEM text or a filename, you can supply credentials straight from a config value or secret store without writing them to disk.

Chilkat PHP ActiveX Downloads

Download Chilkat for PHP ActiveX

PHP ActiveX

<?php

$success = 0;

//  Demonstrates the MailMan.SetSslClientCertPem method, which sets the client-side
//  certificate for SSL/TLS connections, loading it from PEM data or from a PEM file.  The
//  1st argument may contain PEM text or a PEM file path; the 2nd is the PEM password.

$mailman = new COM("Chilkat.MailMan");

//  Configure the SMTP server connection.
$mailman->SmtpHost = 'smtp.example.com';
$mailman->SmtpPort = 465;
$mailman->SmtpSsl = 1;
$mailman->SmtpUsername = 'user@example.com';
$mailman->SmtpPassword = 'myPassword';

//  Load the client certificate from a PEM file.
$success = $mailman->SetSslClientCertPem('qa_data/certs/client.pem','pem_password');
if ($success == 0) {
    print $mailman->LastErrorText . "\n";
    exit;
}

$success = $mailman->VerifySmtpLogin();
if ($success == 0) {
    print $mailman->LastErrorText . "\n";
    exit;
}

print 'Connected using a PEM TLS client certificate.' . "\n";

//  Note: The path "qa_data/certs/client.pem" is a relative local filesystem path,
//  relative to the current working directory of the running application.

?>