来自Flex / AIR iPad应用程序的双向SSL

I have been developing an app that uses a web service created by another party. Currently that service sits on a VPN but they now want to move it to an external server and use two-way SSL for security instead. They have set up the service on the new server and set up the SSL authentication. We have tested over https but without the need for a client certificate and it all works fine. But now they have activated the need for the client cert and I am unable to work out how to connect.I have been developing an app that uses a web s