With increasing problems of network security, a server with high concurrency is designed here to deal with identity authentication. In the general design of the server, RSA and DES algorithm are used. RSA algorithm is used to encrypt or decrypt users identity information. DES algorithm is used to ensure the information will not be stolen. In order to ensure the server has high concurrency, the technology of epoll and thread pool is applied to design the server in the Linux system. In the end , integration testing and stress testing are performed to test its reliability and stability. The testing result shows that the server can run properly under heavy concurrent load.
