Design and Implementation of Single Sign on System Based on Cross Domain Cookie Sharing

In the distributed structure,web applications based on multi-sites need a universal authentication and access control system.Single Sign On(SSO) system is a solution of the authentication system integration.Adopting Single Sign On system,user can access different subsystem in one application only logging in the application one time.In the article,the structure and principium of the Single Sign On system is analyzed and a Single Sign On solution based on Cookie is developed.That is a central authentication system based on HTTP Redirection, with Cross Domain Cookie Sharing as key technology.