匿名网络I2P路径选择的安全性分析

发布时间：2018-03-04 06:40

本文选题：匿名通信　切入点：安全　出处：《计算机研究与发展》2014年07期 　论文类型：期刊论文

【摘要】：随着人们隐私保护意识的提高,匿名通信系统获得了越来越多的关注.I2P(invisible Internet project)是当前应用最广泛的匿名通信系统之一,与Tor(另一种非常流行的匿名通信系统)网络类似,I2P采用大蒜路由的方式隐藏通信双方的通信关系,即通过使用包含多个节点的隧道,使得隧道中的任意单一节点都不能同时获知通信双方的身份信息.然而,如果能够共谋同一隧道的两端节点或是能同时观察到I2P通信链路进、出I2P网络的流量,攻击者依然可以通过流量分析的方法对通信的双方进行关联,进而破坏I2P网络的匿名性.通过分别从I2P网络内部攻击者和传输路径上外部网络攻击者的角度,对当前I2P路径选择过程中可能面临的共谋攻击威胁进行分析,结果显示,I2P网络当前的路径选择算法并不能有效地防范内部攻击者和外部网络攻击者,I2P网络的匿名性仍然面临着巨大的共谋攻击威胁.
[Abstract]:With the increasing awareness of privacy protection, anonymous communication system has gained more and more attention. I2PnInvisible Internet project is one of the most widely used anonymous communication systems. Similar to the Tori (another very popular anonymous communication system) network, the I2P uses garlic routing to hide the communication relationship between the two parties, that is, by using a tunnel containing multiple nodes, So that any single node in the tunnel can not know the identity information of both sides of the communication at the same time. However, if the two ends of the tunnel can be conspired or if the I2P communication link can be observed at the same time, the traffic in and out of the I2P network can be obtained. An attacker can still correlate the two sides of the communication through traffic analysis, thus destroying the anonymity of the I2P network. From the point of view of the internal attacker of the I2P network and the attacker of the external network on the transmission path, This paper analyzes the possible threat of collusion attack in the course of I 2P path selection. The results show that the current path selection algorithm in I2P network can not effectively guard against the anonymity of internal and external network attackers.
【作者单位】：中国科学院计算技术研究所;中国科学院信息工程研究所;中国科学院大学;信息内容安全技术国家工程实验室(中国科学院信息工程研究所);
【基金】：国家自然科学基金项目(61100174) 国家“八六三”高技术研究发展计划基金项目(2012AA013101) 国家科技支撑计划基金项目(2012BAH37B04) 中国科学院战略性先导科技专项课题(XDA06030200)
【分类号】：TP393.08

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