基于Tor的安全隐秘通信平台的设计与分析

Design and Analysis of Secure and Anonymous Communication System Based on Tor

随着流量分析等攻击形式的出现,匿名系统被不断推广,很好地应对了这些攻击。它在加密通信内容的同时,也能够隐藏通信身份,以提高用户隐私。本文基于现有匿名覆盖网络系统--Tor提出一种新的安全隐秘通信平台。在系统实现上,部署了安全节点与安全目录服务器两个主要结构组件;自行设计和实现了本地代理与安全节点之间,安全节点与安全目录服务器之间的通信模块;并引入秘密共享思想,初步实现了多链路传输机制,以寻求提高安全性和增强系统性能的可能。

O With the emergence of traffic analysis and other such attacks, anonymous system is applied more ,and more widely, which withstands these attacks well. It not only encrypts the communication data but also hides clients from the receiving party and the network to improve clients＇privacy. This paper proposes a new secure and anonymous communication framework based on Tor, which is now a popular anonymous overlay network. In the aspect of system implementation, it deploys secure directory servers and secure relays. Then it designs and implements the communication module between local host proxy and secure relay as well as the communication between secure relay and secure directory server. Furthermore, it introduces into the concept of secret sharing and a- chieves a preliminary execution of multi - path routing to find a possible way to improve security and performance.