| With the development of modern science and technology,human society has entered a new era of information.Office automation has been widely applied in all walks of life.The number of electronic files that contain a large amount of enterprise information is also increasing.Therefore,the security of electronic documents has brought new challenges for the enterprises.Traditionally,file security management only pays attention to building of management system rather than the security of file itself,neglecting user's identity authentication.In that context,an electronic file management system,based on identity security authentication and file encryption technology,is designed to meet the requirements of safe storage and use of files by document manager.The software applied in this thesis adopts the architecture of C/S mode and the technology of modern file management and information security,which accomplishes adding,classifying and deleting electronic files based on the PC terminal.Adopting both Hash authentication and RSA digital certificate authentication,the management for user's identity information and access control can be meticulously carried out.Meanwhile,the AES asymmetric encryption algorithm is used to encrypt information including file name,size,logical storage address,access time and modification time.Not only can it be used for the user's identity management,identity authentication and access control,but also it ensures the security of the electronic document information.Taking the requirements of electronic document managers in small and medium-sized enterprises into full consideration,the thesis,using SQL Server 2012 database management system and C# language,designs the system for electronic document security management,which preliminarily realizes its main functions.In accordance with the ideology and design technique of software engineering,the thesis researches and analyzes system requirements,general design of system,module design,related database design,code implementation,and system testing.A summary is given at the end of this thesis. |
