Research and Design of Kerberos Protocol Extended in Authorization

Though it has been proved that Kerberos protocol is the best authentication system in distributed network environment,there're still some limitations in security and protocol structure.Some of these problems are improved,while others still exist.With thorough studying of the principle of Kerberos protocol,this paper proposes an improved Kerberos protocol extended in authorization.The system can fully exploit tickets mechanism to load role-based access control information and successfully realize the seamless integration of Kerberos authentication and authorization.