My SSL is provided by Thawte and it is registered to https://www.thedialogcenter.com. I am looking to find a way to add the certificate to the header of my Soap Request. I will look at Crypt::SSLeay, but from a glance, it looks like encryption algorithms. I need to attach a certificate to the Soap client. The certificate is not used for encryption, it acts as a digital signiture to prove I am someone who should be making these requests for the server.