Research And Implementation Of Security Mechanism Of Communication In The Application Layer For Paperless Examination System

Development and application of the computer network technology makes convenience in all aspects of our society and life, and paperless examination as a widely prosperous subject field has changed the traditional examination method. Along with the research and development of paperless examination system, the paperless examination system based on the Internet technology has to face the information security problems brought by Internet, hence it is with great value and practical significance to do the research of the communication in application layer omnidirectionally.Based on the analysis of relevant technologies about the communication in application layer, the system architecture and the security requirement of paperless examination system, the design principle and the implementation of functional modules are particularized. The design of the application layer protocol model of paperless examination system is expounded, while the composition and workflow of the identity authentication module and the encryption strategy of the data encryption module are discussed. These analysis and design constitute the implementation foundation of the security mechanism about communication in application layer for paperless examination system.On the basis of the detailed design of the security mechanism about communication in the application layer for paperless examination system, the specific implementation of the core for every functional model is presented. The processing workflow for the application layer protocol of communication server and examination manager client are discussed. And then the functional implementation of the identity authentication module and its sub-modules are described, while the implementation details about the algorithm of encryption strategy is expounded.The practical application indicates that the security mechanism of communication in the application layer can provide an well security guarantee for paperless examination system, and it has great universality, good expansibility and certain reference value to enhance the security requirements of similar application systems.