TY - JOUR ID - 144758 TI - Location Privacy Preservation for Secondary Users in a Database-Driven Cognitive Radio Network JO - The ISC International Journal of Information Security JA - ISECURE LA - en SN - 2008-2045 AU - Salami, Zeinab AU - Ahmadian Attari, Mahmoud AU - Aref, Mohammad Reza AU - Jannati, Hoda AD - Department of Electrical Engineering, K. N. Toosi University of Technology AD - Department of Electrical Engineering, Sharif University of Technology AD - School of Computer Science, Institute for Research in Fundamental Sciences (IPM),Iran- Tehran Y1 - 2022 PY - 2022 VL - 14 IS - 2 SP - 215 EP - 227 KW - Database-Driven CRN KW - Location Privacy KW - Homomorphic Encryption DO - 10.22042/isecure.2022.243102.568 N2 - Since their introduction, cognitive radio networks, as a new solution to the problem of spectrum scarcity, have received great attention from the research society. An important field in database driven cognitive radio network studies is pivoted on their security issues. A critical issue in this context is user's location privacy, which is potentially under serious threat. The query process by secondary users from the database is one of the points where the problem rises. In this paper, we propose a Privacy Preserving Query Process (PPQP), accordingly. PPQP is a cryptography-based protocol, which takes advantage of properties of some well-known cryptosystems. This method lets secondary users deal in the process of spectrum query without sacrificing their location information. Analytical assessment of PPQP's privacy preservation capability shows that it preserves location privacy for secondary users against different adversaries, with very high probability. Relatively low communicational cost is a significant property of our novel protocol. UR - https://www.isecure-journal.com/article_144758.html L1 - https://www.isecure-journal.com/article_144758_1ade028283b0789618336a6e6bae47a1.pdf ER -