Questions Management System Based On SHA-1 Safety Certification

This system is a management system of the questions which using Delphi visual programming tool for development in combination with SHA-1 authentication technology of information security.It utilizes a variety of object-oriented development tools Delphi provided,establishes a prototype for system application, and then carries on an iteration of needs,modifies and improves the results constantly,until a satisfied viable system is formed,finally it gives the system encryption which is made by the SHA-1 digital signature technology.This system is well-structured,convenient to use.The data of the questions bank is easy to input.In the system,two functions are achieved,including artificial selection and random function of the titles.On the other hand,the system can be divided into two aspects,constituted by the establishment and maintenance of the background database and the development of front-end application.There are secure user login module,convenient browser interface, and easy-to-use function modules in the system.In this paper,an analysis is formed which based on knowledge structure.It expounds the establishment and methods of implementation for algorithm,using the degree of difficulty of the Knowledge points and questions as the two main control parameters.And it also expounds the realization of the SHA-1 digital signature technology in the system.The use of this system not only raises the teachers in the management of the questions,but also improves efficiency of the volume.It can achieve a real common sense and safety when used.