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An efficient privacy-preserving protocol for database-driven cognitive radio networks

机译：用于数据库驱动的认知无线电网络的有效保护协议

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Cognitive radio is regarded as a promising technology for remedying spectrum shortage and improving spectrum utilization. However, database-driven cognitive radio networks (CRNs) are vulnerable to a series of security attacks and privacy threats, especially the privacy breach of secondary users (SUs). In this paper, we propose an efficient privacy-preserving protocol to protect the identity and trajectory privacy of each SU and to prevent the database (DB) from tracing any SU. Besides, this paper also aims at improving the efficiency of authentication and channel allocation to offer the best connectivity to SUs wherever they are and at any time. Taking advantage of the elliptic curve cryptography technique, our protocol achieves the mutual authentication between SUs and base stations (BSs), which enhances the security of CRNs communication. Based on channel pre-allocation to BSs, our protocol reduces the latency of obtaining available channels for SUs. Moreover, our protocol exploits reputation to motivate SUs to be honest and thus increases the utilization of the limited spectrum resources. The results of security analysis show that our protocol provides strong privacy preservation for SUs that the DB cannot get the entire trajectory of any SU, even the DB colludes with all BSs. Furthermore, the results also show that the proposed protocol can resist various types of attacks. The results of performance evaluation indicate the efficiency of the proposed privacy-preserving protocol. (C) 2018 Elsevier B.V. All rights reserved.
机译：认知无线电被认为是用于纠正频谱短缺和提高频谱利用的有希望的技术。然而，数据库驱动的认知无线电网络（CRN）容易受到一系列安全攻击和隐私威胁，特别是辅助辅助用户（SUS）的隐私违约。在本文中，我们提出了一种有效的隐私保留协议，以保护每个SU的身份和轨迹隐私，并防止数据库（DB）跟踪任何苏。此外，本文还旨在提高认证和渠道分配的效率，以便在任何时候提供最佳连接到SUS。利用椭圆曲线加密技术，我们的协议实现了SUS和基站（BSS）之间的相互认证，这提高了CRN通信的安全性。基于BSS的信道预分配，我们的协议减少了获取SUS的可用频道的延迟。此外，我们的协议利用声誉激励苏诚实，从而提高了有限频谱资源的利用率。安全分析结果表明，我们的协议为SUS提供了强大的隐私保存，因为DB无法获得任何SU的整个轨迹，即使是与所有BSS的DB勾结。此外，结果还表明，所提出的协议可以抵抗各种类型的攻击。绩效评估结果表明拟议的隐私保留议定书的效率。 （c）2018年elestvier b.v.保留所有权利。

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