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Anonymity Measure and Protocol Research in P2P Anonymous Communication System

Author: DengLin
Tutor: XieZuoï¼›LiRenFa
School: Hunan University
Course: Applied Computer Technology
Keywords: Anonymous communication system P2P Anonymity Metrics Collusion attack Nested encryption
CLC: TP393.08
Type: Master's thesis
Year: 2009
Downloads: 128
Quote: 2
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Abstract


With the wide application of computer network security and privacy on the Internet, more and more attention . Hide anonymous communication relationship communication technology rapid development and has become the hotspot of network security researchers . In recent years, with the rise of P2P , P2P networks for anonymous communication problem new technical means of P2P anonymous communication protocol design has drawn increasing attention of researchers . Meanwhile, anonymous access is the various anonymous technical objective of the study , research Anonymous measure of the anonymous system improvements have important guiding significance . P2P anonymous communication systems strong anonymity and efficiency objectives such P2P anonymous communication systems Anonymous metrics and P2P anonymous communication protocol discussion and research . This paper describes the anonymous communication technology , P2P technology concepts ; anonymous communication implementation mechanism ; analysis of the various characteristics of anonymous system , pointing out that the anonymous system status, development trends and existing problems ; explore with representatives nature of P2P anonymous communication system ; summarizes the system of common attacks . Second , anonymous P2P anonymous sender only quantitative analysis of anonymous measure of the status quo , recipient anonymity metrics based on information entropy for collusion attack given several typical P2P anonymous system receiver anonymity metric calculation method. And analyzed the relationship between the receiver anonymity degree and scale of the system , the proportion of malicious nodes , the path length and the forward probability . Finally, both anonymous and efficiency for P2P anonymous communication systems is difficult , for the purpose of this article to get strong anonymity , minimize costs and improve efficiency , long a new controllable Road P2P anonymous communication protocols LCPACP . LCPACP nested encryption to ensure strong and anonymous use of the the forwarding probability decreasing strategy to effectively control the path length to obtain high efficiency . Theoretical analysis and calculation results show that the new protocol can significantly shorten the length of the road , to ensure good transmission performance , at the same time provide good protection of anonymity .

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