Abstract:

This paper discusses the definition of trust management and some existing trust management systems. While the previous work provides the basis for exp  ressing and verifying trust, it does not address the concurrent problems of how to continuously monitor and manage trust relationships over time. In thi s paper we analyze the authorization mechanism and some limitations in open computing systems based on some previous work, and bring forward a trust man  agement prototype based on RDF for open computing systems.

Key words: （trust management, open computing system, authentication, authorization）