(Ruby) 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 Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require '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 != true)
    print cert.lastErrorText() + "\n";
    exit
end

#  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() != true)
    print "A private key is needed for TLS client authentication." + "\n";
    print "This certificate has no private key." + "\n";
    exit
end

#  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 != true)
    print http.lastErrorText() + "\n";
    exit
end

#  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.