Design and Implementation of Uniform Identity Authentication and Access Control Systems in CRP

In the CRP(CRP-Countries Resource Planning) applications,it integrates a large number of dispersed information and applications of users by "one-plus-one-plus-N" application mode,allowing different user groups to access all resources on CRP securely through a single portal,to provide a unified window for centralized access to CRP resources.To the end,we combine the SSO to design and implement a unified identity authentication and access control systems based on CAS,to improve effcient and maintainability of system in practice.