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工程科学与技术:2020,52(5):178-185
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一种新的多用户位置隐私保护方案
(1.武警工程大学 密码工程学院,陕西 西安 710086;2.网络与信息安全武警部队重点实验室,陕西 西安 710086;3.武警工程大学 教务处,陕西 西安 710086)
A New Location Privacy Protection Scheme for Multi-users
(1.College of Cryptography Eng., Eng. Univ. of PAP, Xi’an 710086, China;2.Key Lab. of Network & Info. Security of PAP, Xi’an 710086, China;3.Office of Academic Affairs, Eng. Univ. of PAP, Xi’an 710086, China)
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投稿时间:2019-09-16    修订日期:2020-07-20
中文摘要: 位置服务中许多应用都需要多用户进行位置共享,但传统的刚性隐私保护策略迫使用户不得不共享自身的精确位置。为满足用户个性化的隐私保护需求,本文提出了一种新的多用户位置共享隐私保护方案。该方案利用两种位置转换模型保证用户能够灵活地自定义其不同精度的共享位置,再通过基于中国剩余定理的多秘密共享机制将不同精度的位置数据打包转换,只需一次份额分发就可实现不同共享对象恢复出不同精度的位置信息。安全性分析表明,该方案的安全性高,不依赖于位置服务器的可信度,能够抵抗单个位置服务器攻击、多个位置服务器合谋攻击以及多个用户之间的合谋攻击,在不可信环境下实现了多用户位置共享的弹性隐私保护。仿真实验分析进一步表明,该方案与同类方案相比更高效,性能平稳。当参与存储管理份额的位置服务器数量增加或需恢复更高精度位置信息时,计算通信开销不会剧增,在资源受限的网络环境中同样适用。
Abstract:Many applications in location-based services require multiple users to share location. However, the traditional rigid policy of privacy protection forces users to share and expose their precise locations. In order to meet the user’s personalized needs for privacy protection, a new multi-user location sharing privacy protection scheme was proposed in this paper. Two kinds of location conversion models were used in our solution to ensure that users can flexibly customize their shared locations with different precision levels. Then all the location data with different precisions is packaged and converted through a multi-secret sharing mechanism based on the Chinese Remaining Theorem. In this mechanism, only one time shares-distribution was needed to realize different shared objects recover location information with corresponding different accuracies. In the security analysis, it is proved that the flexible location privacy protection of multi-user location sharing was realized in an untrusted net environment by our solution. It is highly secure since it does not depend on the trustability of the location provider and can resist single location server attack, collusion attacks of multiple location servers and multiple users. Furthermore, compared with the peer solutions, the simulation experiments showed that ours is more efficient and stable in performance. When the number of location servers participating in the share storage increases or the higher-precision location information is required to be reconstructed, the overheads of computation and communication will not increase dramatically. Thus, it is also applicable in the resource-constrained network environment.
文章编号:201900895     中图分类号:TP391    文献标志码:
基金项目:国家自然科学基金项目(61572521);“十三五”国家密码发展基金密码理论研究项目(2017YFB0802000);陕西省自然科学基金项目(U1636114;2015JM6353);武警工程大学创新团队科学基金项目(KYTD201805)
作者简介:汪晶晶(1986-),女,讲师,博士.研究方向:应用密码学位置隐私保护.E-mail:344505421@qq.com
引用文本:
汪晶晶,韩益亮,陈家勇,杨晓元.一种新的多用户位置隐私保护方案[J].工程科学与技术,2020,52(5):178-185.
WANG Jingjing,HAN Yiliang,CHEN Jiayong,YANG Xiaoyuan.A New Location Privacy Protection Scheme for Multi-users[J].Advanced Engineering Sciences,2020,52(5):178-185.