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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (4): 712-718    DOI: 10.3785/j.issn.1008-973X.2012.04.020
自动化技术、电信技术     
动态P2P网络中基于匿名链的位置隐私保护
徐建1, 黄孝喜1, 郭鸣2, 金正平1, 郑宁1
1.杭州电子科技大学 计算机学院,浙江 杭州310018；2.浙江大学城市学院 计算机与计算科学学院,浙江 杭州 310015
Location privacy through anonymous chain in dynamic P2P network
XU Jian1, HUANG Xiao-xi1, GUO Ming2, JIN Zheng-ping1, ZHENG Ning1
1. College of Computer, Hangzhou Dianzi University, Hangzhou 310018, China；2. School of Computer and
Computing Science, Zhejiang University City College, Hangzhou 310015, China
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摘要：

为了解决动态P2P环境中的位置隐私保护问题,提出基于匿名链的位置隐私保护算法.不同于一般的K-anonymity方法,通过在用户查询信息转发的过程中构造一条匿名链来混淆身份信息与位置信息的一一对应关系,在完成查询的同时保护用户位置的隐私.针对一般P2P匿名存在的匿名组稳定性问题,该算法根据路网环境中移动对象的动态性,通过计算相邻移动用户之间的连通性对匿名链中间节点的选择进行优化.讨论匿名链构造的方法和中间节点优化选择的标准,对算法的安全性展开理论分析.通过实验验证了算法的可行性.实验结果表明,该算法在不同用户密度下都能够较好地完成匿名链的构造,保护用户位置隐私；同时,中间节点的优化方法可以在一定时间内显著提高匿名链的有效性.
Abstract:

An anonymous chain based privacy protection algorithm was presented to solve the problem of location privacy protecting in dynamic peer-to-peer (P2P) network. Different from the general K-anonymity method, anonymous chain was constructed to break the one-to-one correspondence between the user identity and location information during the forwarding process of query message, and the location privacy was protected with the completion of the query. The algorithm optimizes the selection of intermediate nodes according to the stability of linkage between two nodes in order to deal with the dynamic issues in P2P environment.A connectivity matrix was introduced for the chain constructing algorithm and the security of anonymous chain was proved. A simulation on a real city map for the algorithm showed the effectiveness. The results prove that anonymous chain can be constructed in different density of moving nodes and the optimal intermediate nodes selecting method obviously improves the stability of the chain.
出版日期: 2012-05-17
:  TP 391  
基金资助:

国家自然科学基金资助项目（61003195, 61070212, 61103101）; 中国博士后科学基金特别资助项目（201104743）.
作者简介: 徐建（1975—）,男,副教授,从事分布式计算机系统的研究.E-mail:jian.xu@hdu.edu.cn
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引用本文:

徐建, 黄孝喜, 郭鸣, 金正平, 郑宁. 动态P2P网络中基于匿名链的位置隐私保护[J]. J4, 2012, 46(4): 712-718.

XU Jian, HUANG Xiao-xi, GUO Ming, JIN Zheng-ping, ZHENG Ning. Location privacy through anonymous chain in dynamic P2P network. J4, 2012, 46(4): 712-718.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.04.020    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I4/712

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