BGKey: Group Key Generation for Backscatter Communications among Multiple Devices

Backscatter communication (BC) is an emerging radio technology for achieving sustainable wireless communications. However, the literature still lacks an effective secret group key generation scheme for safeguarding communications among multiple resource-constrained backscatter devices (BDs). In this...

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Bibliographic Details
Published in:IEEE transactions on information forensics and security 2024-01, Vol.19, p.1-1
Main Authors: Li, Jiajun, Wang, Pu, Yan, Zheng, Yang, Yishan, Zeng, Kai
Format: Article
Language:English
Subjects:
Backscatter
Backscatter Communication
Backscattering
Communication system security
Eavesdropping
Group Key Generation
Passive Eavesdropping
Performance evaluation
Physical Layer Security
Radio
Radio frequency
RF signals
Security
Wireless communication
Wireless communications
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Summary:Backscatter communication (BC) is an emerging radio technology for achieving sustainable wireless communications. However, the literature still lacks an effective secret group key generation scheme for safeguarding communications among multiple resource-constrained backscatter devices (BDs). In this paper, we propose a novel physical layer group key generation framework, BGKey, for securing backscatter communications among multiple BDs. BGKey contains three schemes: Centralized Group Key Generation (CGKG), Decentralized Group Key Generation (DGKG), and Decentralized Hierarchical Group Key Generation (DHGKG). Each scheme has its own advantages, applicable in different scenarios. We analyze the performance of BGKey schemes regarding computation and communication complexity and security under eavesdropping and three active attacks. We conduct extensive simulations with different system parameters to evaluate their performance. CGKG is the most efficient and accurate for generating a group key, but it depends on a trusted radio frequency source (RFS) and is the least secure under eavesdropping and three active attacks among three schemes. DGKG exhibits better security and higher key generation rate (KGR) against eavesdropping and three active attacks compared with CGKG. However, the bit disagreement ratio (BDR) of group key increases when the size of BD group increases. DHGKG dramatically enhances the performance of group key generation compared with DGKG and retains its excellent security against eavesdropping and three active attacks.
ISSN:1556-6013
1556-6021
DOI:10.1109/TIFS.2023.3345650