毕业答辩论文基于 QQ 聊天平台的安全通信基于 QQ 聊天平台的安全通信讨论数学计算机科学学院摘 要:QQ 是中国使用最广泛的即时通信工具,其安全性对于用户安全和网络安全具有重要影响。QQ 账号被盗后,其危害和影响是可怕的,用户丢失的大量好友资料和联系方式在短时间内是很难完全找回的。本文将通过对 QQ 登陆协议的分析性讨论,分析其安全性,指出其中存在的安全漏洞,并说明 QQ 因此可能遭受的攻击,并对此提出改进意见,增强 QQ 通信的安全性!另外,本文也对QQ 盗号也作了相应的讨论,并提出了防范的方法。关键词:QQ;登录协议;安全漏洞;改进意见Secure communication based on QQ chat platformSchool of Mathmatics and Computer ScienceAbstract: QQ is the most widely used instant communication tools in China, Its safety has important influence to user security and network security. QQ account stolen, The harm and influence is terrible, User data lost a lot of friends and contact way in a short period of time is difficult to completely recovered. This article through to the analysis of the landing of QQ protocol, Analysis of the security, Pointed out the existence of security vulnerabilities, and Indicating the QQ so vulnerable to attack, And proposed improvements, Strengthen the QQ communication security. In addition, This article has also made the corresponding research, handing over to QQ,And put forward the prevention methods.Keywords: QQ ; Login agreement ; Security vulnerabilities; Improvements第 1 章 QQ 登录协议QQ 的登陆协议是腾讯自己开发的一套基于二进制数据的应用层网络协议,QQ 登陆协议采纳了固定的格式,客户端与服务器发送的报文格式上仅有一点点区别。协议用到的对称加密算法为反馈随机交织填充的 TEA(Tiny Encryption Algorithm,一种分组加密算法)变形加密算法,记作 QQTEA ;用到的哈希函数为 MD5。QQ 登录分为 UDP 和 TCP 登录,还支持代理登录。大部分情况下使用UDP 登录。UDP 登录端口服务器为 8000,本地端口一般是从 4000 开始选择,假如该端口已经被占...