Single sign-on introduction
SSO English name Single Sign On, Single Sign-On. SSO is in multiple applications, users need only log in once to access all applications of mutual trust. It includes the key can be mapped to log in to other applications for the same user login mechanism of. It is one of the more popular enterprise business integration solutions.
Implementation Mechanism
When a user first accesses the application system, because are not logged in, you will be directed to the login authentication system; identity verification based on the login information provided by the user authentication system, if by check, it should be returned to the user an authentication credentials --token; when users access other applications will bring this token, as their authentication credentials, the system will apply to the authentication token verification system after receiving the request, checks the token legality. If by check, in case the user can not log in again to access applications 2 and 3 of the application system.