树形异步即时通信密码协议的研究

A Tree-Liked Asynchronous Cryptographic Protocol for Instant Messaging

随着移动互联网的兴起,异步即时通信系统广为盛行,改变了人们的生产、生活方式。以微信为代表的移动应用便是其中的佼佼者,被广泛应用于人们的工作与生活中。然而,近年来利用即时通信系统进行违法犯罪的现象屡见不鲜。建立安全保密的即时通信系统,保障通信的安全与保密等问题愈来愈引起人们的重视。然而现有的密码协议并不满足异步即时通信系统的需要。为了解决异步即时通信系统的密码协议问题,这里在分析和对比OTR、PGP等密码协议的基础上,提出了一种树形异步即时通信的密码协议,并详细阐述了该密码协议的工作原理、完成了安全性分析,在一定程度上解决了异步即时通信系统的密码协议问题。

With the development of mobile lnternet, asynchronous instant communication system becomes widely-spread,and greatly changes people＇s production and life style. Mobile application, represented by WeChat one of the outstanding applications, is widely used in people＇s work and life. However, in recent years, the use of instant communication system for illegal crime is nothing new. To establish secure and confidential instant messaging system and protect the security and confidentiality of communications in- creasingly attracts much attention from the people. However, the existing crypto protocols could not meet the requirement of asynchronous instant communication systems. Based on the analysis and comparison of crypto protocols, such as OTR and PGP, a novel tree-liked asynchronous crypto protocol for instant messa- ging is proposed, thus to solve the problem of crypto protocol in asynchronous instant communication sys- tem. Additionally, the working principle and security analysis of this protocol is described in detail. This could, in a certain degree, solve the problem of crypto protocol in asynchronous instant messazin~.