A model of uniform authentication system based on digital certificate

authentication proxy and trusted computing platform in the Intranet environment is proposed in this paper.Problems of mixed password

pure efficiency and the trustworthiness of endpoints are resolved through methods of adding trusted computing platform at the endpoints

user uniform identity authentication

platform identity verification and integrity verification

etc.Analysis for the security and experimental results shows that Intranet users may access all the authorized network services without necessarily re-authentication

which greatly enhances the efficiency and security of this system.At the same time

it can assure the trustworthiness of endpoints.