一种基于停止-转发MIX的统计型攻击  

Statistical Attack Based on Stop & Go MIX

作　　者：徐红云[1] 刘京 李孟杰[1] 

机构地区：[1]华南理工大学计算机科学与工程学院,广东广州510006 [2]Department of Computer Science,The University of Alabama.

出　　处：《小型微型计算机系统》2010年第11期2217-2221,共5页Journal of Chinese Computer Systems

基　　金：华南理工大学SRP项目资助;教育部博士点基金项目(200805610019)资助

摘　　要：为了增强匿名系统的匿名性,更好地保护用户的通信隐私,基于停止-转发MIX提出一种新的统计型攻击算法.算法将攻击者的连续观察时间划分成t个周期,每个周期统计MIX节点输出信息包的接收者集合,称之为一个观察集合,获得t个观察集合后,采用概率统计、集合运算等方法,确定目标发送者的接收者集合.指出采用填充包技术防御该攻击时,可以增加攻击所需的观察集合数,降低攻击的有效性.In order to strengthen the anonymity degree of anonymity system, thus to protect users communication privacy more effective, this paper propose a new statistical attack algorithm based on stop- and - go MIX. The attack algorithm partitions the continuous observation time of an attacker into t cycles, statistics the receivers of the output packets of the MIX during each cycle, employs probability ＆ statistics and set computation to deduce the receivers of the target sender. It points out that padding could be used to counter this attack, thus increases the observation sets of the attack and degrades the effectiveness of the attack.

关 键 词：数据隐私 网络安全 匿名系统 停止-转发MIX 统计型攻击 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]