Web Services are simply a piece of logic /code that runs on the web server and handles the requests of multiple clients. These web services are also trusted because they communicate using standard based web technologies including HTTP and XML-based messaging. Web resource allocation under multi course environment isrecent study in web technology. This paper presents a trusted system that helps in the authorization of web services. Zero Knowledge protocols have been used to implement the trusted System. An extended version of basic zero knowledge and Graph Isomorphism has been presented in these paper. Here we address the problem of the authentication of resources without the use of hard number theoretic concepts.