Openwebif key authentication instead of http auth

Since I haven't found an openweif official forum I'm posting this here.

Does anybody know how to stream from webtv in openwebif plugin securing the source but without http://root:password@192.168.1.2:8001/1:0:1:4:2740:110:820000:0:0:0:?

I'd like to use a stream key something like http://192.168.1.2:8001/1:0:1:4:2740:110:820000:0:0:0:/key.

User authentication sometimes doesn't work.

Thanks