(Perl) Use Installed Cert on Windows for TLS Client Authentication

Demonstrates how to use a certificate that has already been installed on a Windows PC for TLS client authentication.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

$http = chilkat::CkHttp->new();

#  On Windows, a pre-installed certificate can be loaded in a number of different ways.
#  This example loads by the common name:
$cert = chilkat::CkCert->new();
$success = $cert->LoadByCommonName("My ECA Medium Assurance Identity Certificate");
if ($success != 1) {
    print $cert->lastErrorText() . "\r\n";
    exit;
}

#  Make sure this certificate has a private key available.
#  It should be a private key such that when the certificate was installed, it was marked as "exportable"
#  so that authorized programs are able to access the private key.
if ($cert->HasPrivateKey() != 1) {
    print "A private key is needed for TLS client authentication." . "\r\n";
    print "This certificate has no private key." . "\r\n";
    exit;
}

#  Set the certificate to be used for mutual TLS authentication
#  (i.e. sets the client-side certificate for two-way TLS authentication)
$success = $http->SetSslClientCert($cert);
if ($success != 1) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

#  At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
#  connection will automatically use it if the server demands a client-side cert.