Abstract: In order to solve the problem of user identity authentication in multi-application systems and multi- application scenarios, an extensible authentication center architecture with dynamic feedback is proposed. Combined with operation definition, intelligent evaluation and feedback mechanism, authentication gateway and authentication equipment are used to establish the reliable, complete and effective unified identity authentication capability between terminal application and information system resources. An example is given to verify the security, reliability and effectiveness of the design method of the system in practical application. It has certain reference value for the application of unified identity authentication, comprehensive audit and access control in the future.

Key words: identity authentication, authentication center, role definition, feedback mechanism, extensibility, dynamic evaluation