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随机匿名的位置隐私保护方法

DOI: 10.3969/j.issn.1006-7043.201311024

Keywords: 无线网络, 移动通信, 隐私保护, 基于位置服务, 位置k-匿名, 私有信息检索, 随机匿名

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Abstract:

基于空间匿名区域的研究方法容易受到多查询攻击和推理攻击,从而带来隐私暴露问题.为了保证基于位置服务中的隐私安全,基于k-匿名思想,构建了随机k-隐藏集以满足位置k-匿名性和位置l-多样性.随机k-隐藏集是由离散的位置点组成,并且彼此之间的网格距离大于阈值s.利用私有信息检索协议保证了查询结果在检索过程中的隐私性,实现了服务提供者在无法知道用户精确查询结果的前提下为用户提供基于位置的服务.仿真实验验证了算法的安全性和有效性.

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