When the hammer meets the nail: Multi-server PIR for database-driven CRN with location privacy assurance
When the hammer meets the nail: Multi-server PIR for database-driven CRN with location privacy assurance
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DOI：
10.1109/cns.2017.8228646
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
Mohamed Grissa;A. Yavuz;B. Hamdaoui
中科院分区：
文献类型：
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作者：
Mohamed Grissa;A. Yavuz;B. Hamdaoui
我们表明，它是可能的，以实现信息理论的位置隐私的二次用户（SU）在数据库驱动的认知无线电网络（CRN）的端到端的延迟小于一秒，这是显着优于现有的替代品，只提供一个计算隐私。这是基于敏锐的观察而实现的，根据联邦通信委员会（FCC）的要求，所有认证的频谱数据库同步它们的记录。因此，频谱数据库的相同副本可通过多个（不同的）提供商获得。我们利用多服务器的私人信息检索（PIR）和数据库驱动的CRN架构之间的协同作用，提供一个最佳的隐私水平与高效率，利用这一观察。我们通过实际云系统上的部署进行了分析和实验，证明了我们对多服务器PIR的适应性优于（目前）最快的单服务器PIR，具有信息理论安全性，共谋弹性和容错功能。我们的分析表明，多服务器PIR是一个理想的加密工具，以提供位置隐私的数据库驱动的CRN，其中复制数据库的要求是一个自然的一部分，系统架构，因此SU可以享受所有的优点，多服务器PIR没有任何额外的架构和部署成本。
We show that it is possible to achieve information theoretic location privacy for secondary users (SUs) in database-driven cognitive radio networks (CRNs) with an end-to-end delay less than a second, which is significantly better than that of the existing alternatives offering only a computational privacy. This is achieved based on a keen observation that, by the requirement of Federal Communications Commission (FCC), all certified spectrum databases synchronize their records. Hence, the same copy of spectrum database is available through multiple (distinct) providers. We harness the synergy between multi-server private information retrieval (PIR) and database-driven CRN architecture to offer an optimal level of privacy with high efficiency by exploiting this observation. We demonstrated, analytically and experimentally with deployments on actual cloud systems that, our adaptations of multi-server PIR outperform that of the (currently) fastest single-server PIR by a magnitude of times with information theoretic security, collusion resiliency and fault-tolerance features. Our analysis indicates that multiserver PIR is an ideal cryptographic tool to provide location privacy in database-driven CRNs, in which the requirement of replicated databases is a natural part of the system architecture, and therefore SUs can enjoy all advantages of multi-server PIR without any additional architectural and deployment costs.