The W3C XML Key Management Service (XKMS) Working Group has published a note on WSDL 1.1 description for XKMS. The group "has defined a Web Service to handle conventional PKI (public-key infrastructure) functions such as registration, revocation and status, as well as related functions such as retrieval. This note provides a sample Web Services Description Language (WSDL) 1.1 description for an XKMS service."