Study of single sign-on model within URP architecture

URP, through a portal system, integrate various kinds of information in various application systems as a whole digital campus. Single sign-on is a method to achieve a unified portal authentication. On the basis of summarizing the single sign-on model usually used, a combined model based on broker, agent and token was proposed, which used cookie token, session tree of access permissions and control procedures to achieve cross-domain access, and used the LDAP database to complete the user's login, authentication and rights management.