The Safety Research And Implement Of Online Examination System

With the development of information technology, the education informationconstruction is a natural product of the information technology. Many countriesconsider distant education which is an important part of education informationconstruction as the breach of education information construction. The networkexamination, as an important part of distant education, which will be a necessary trendof the age development is a certain choice for improving work efficiency, economicbenefit and perfecting education system.Based on a detailed summarization and analysis of related literatures, in thisthesis, I studied how to improve the security of Network examination. The contentincludes three parts: the first is anonymous security study. Using group signature, wecan realize that the teacher can’t know whose paper is when manual grading afteraffirming the legal user. And after grading, examination center will open theexaminee’s identity. The second part is other security study in network examination.We use two-way identity certification so that we can identify examinees and teachersat the same time identify the examination center server in order to ensure security ofcommunication. Using Genetic Algorithm as the algorithm of automatic composingpapers, we can keep secret of test paper before examination. The third part is codingthe system.The technologies we study in this thesis are not only a necessary help forapplying in E-government and E-commerce, but also fill up the society demand. So,the system is valuable in theory and practicality.