安全文件传输系统的设计与实现学士学位论文.doc

摘要
随着计算机技术的迅速发展,在计算机的应用领域中软件系统的应用越来越广泛。而文件传输是其中重要的一个方面,现在人们对传输系统的性能和功能要求也越来越高。但文件传输系统尤其是在文件传输的安全性上却存在着巨大的缺陷。大多数的安全文件传输系统的安全性体现在了算法的改良或者使用更高级的算法,根据实际的需要,本文中所采用的是在成熟算法的基础上,通过管理员或者父节点对节点的授权,只能对授权过的节点进行文件传输,而对其他节点不能传输,对节点路径进行了选择,在网络安全上更进一步的提高了文件传输的安全性。
本文首先介绍了课题的背景及国内外现状,然后对系统进行一全面的需求分析并对设计平台进行分析并设计了开发技术,对开发技术做了一个简单的介绍。接着对系统进行概要分析,包括了网络拓扑分析、架构分析及主要模块分析,为了能够更好的完成系统,在概要分析时做了用例分析,以便于更好的实现详细设计。最后,对系统做了详细的流程分析及详细说明表,并进行系统实现。
本系统采用C/S架构,主要由服务器端和用户端组成,其中服务器端的操作系统为Linux系列操作系统,用户端为Windows系列操作系统,开发语言使用Java语言,平台使用Eclipse,并对节点间网络通讯方式使用套接字(Socket)和SSL安全控制。开发过程中,使用软件工程理论知识对整个系统进行分析与设计。
关键词:文件传输;节点授权;路径;软件工程
Abstract
With the rapid development puter technology, software system is more and more widely used in the field puter application. File transfer is one of the important aspects and people increasingly have higher demands for the function and performance of the transmission system. But the file transmission system is imperfect in security. Most secure file transfer system security is reflected in the improvement of the algorithm or the use of more advanced algorithm. According to the actual need, node is authorized by the administrator or parent node on the basis of mature algorithm in this article. File is transferred only through authorized node and node path is selected purposefully. Thus security is further improved in file transmission.
This article first introduced the task background and research at home and abroad. Then analyses of demand of the system and design platform were processed. Development technology is designed and briefly introduced. Summary analysis to the system is made work topology, architecture and main modules analysis. In order to plete the system, case analysis is used in summary analysis to implement detailed design. Detailed process analysis is made to the system and explanatory table pleted Finally the system is implemented.
This system adopts C/S structure and is posed of server and client Linux operating system series is for the server while