信息检索,靠敏1307300203.docx

信息检索,靠敏1307300203.docx - QQ MSN Messenger DES

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安全网络即时通信软件的设计与实现综述 摘要: 随着计算机网络技术突飞猛进的发展,即时通信已成为目前互联网上最为流 行的通信方式,深受广大网民的喜爱。无论是国内的腾讯 QQ 还是微软的 MSN Messenger ,都拥有相当大的用户群。即时通信软件给人们带来了极大的便利, 使人们可以随时随地地和亲朋好友进行在线交流和沟通,它拉近了人与人之间 的距离,丰富了人们的精神生活,正逐渐成为人们生活和工作中不可或缺的一 部分。 虽然即时通信软件层出不穷,但是大部分免费的即时通信软件都缺少数据加密 功能,存在着不容忽视的网络安全隐患。本课题将利用现有的网络通信技术、 数据库技术和信息安全技术,设计并实现一个新的安全网络即时通信系统。它 在原有的即时通信系统的基础上,使用 DES 加密算法对通信内容进行加密和解 密,保证了数据通信的及时性和安全性,为人们提供了更加安全可靠的即时通 信平台。 本系统采用三层 C/S P2P 通信模型混合结构设计系统构架,在 .NET 开发环境 下,使用 C# 语言进行开发,数据库采用了 SQL Server 2000 。该即时通信软件具 备的主要功能包括用户帐号申请、用户登录、添加好友、文字聊天、文件传输 等。本系统使用便捷,用户界面很有人性化,安全保密设置齐全,具有一定的 使用价值。 关键词 即时通信、信息安全、 DES 算法、便捷 ABSTRACT Along with the fast development of the computer networking technology, instan t communication has become the most popular communication means on the Intern et, and it is favored by the majority of Internet users. Whether domestic tencent QQ or Microsoft's MSN Messenger, has considerable user group. Instant communication software has brought people great convenience that people can communicate with r elatives and friends online whenever and wherever possible. It cuts down the distanc e between people and people and enrich people's spiritual life, and it is becoming an indispensable part of people’s life and work. Although instant communication software emerges endlessly, but most free instant c ommunication software lacks data encryption functions, so that it exists the networki ng danger hidden which can’t be ignored. This subject will use the existing network c ommunication technology, database technology and information security technology to design and implement a new safety networking instant communication system. Ba sing itself on the old instant communication system, it uses DES encryption algorithm to encrypt and decrypt the communication content, to ensure timeliness and security of the data communication, so that it provides people with a more secure and reliabl
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e instant communication platform.
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