PUBLIC MARKS with tags "web services" & x.509

to implement Web Services Security with the X.509 Certificate Profile, you also need to implement XML Signature (which includes XML Canonicalization and XML Exclusive Canonicalization) and XML Encryption. To correctly handle imports of WSDL1.1 documents (and validate the traffic they describe), you need to support the entire behemoth that is XML Schema -- in particular if you are attempting to support RPC-oriented SOAP, which informally requires you to support the entire XML Schema Datatypes specification. Don't forget support for SOAP with Attachments, either!