BGKey: Group Key Generation for Backscatter Communications Among Multiple Devices
BGKey: Group Key Generation for Backscatter Communications Among Multiple Devices
复制标题
DOI：
10.1109/tifs.2023.3345650
复制
发表时间：
2024
影响因子：
6.8
通讯作者：
Jiajun Li;Pu Wang;Zheng Yan;Yishan Yang;Kai Zeng
中科院分区：
文献类型：
--
作者：
Jiajun Li;Pu Wang;Zheng Yan;Yishan Yang;Kai Zeng
反向散射通信（BC）是一种用于实现可持续无线通信的新兴无线电技术。然而，文献仍然缺乏有效的秘密组密钥生成方案来保护多个资源受限的反向散射设备（BD）之间的通信。在本文中，我们提出了一种新颖的物理层组密钥生成框架 BGKey，用于保护多个 BD 之间的反向散射通信。 BGKey 包含三种方案：集中式组密钥生成（CGKG）、去中心化组密钥生成（DGKG）和去中心化分层组密钥生成（DHGKG）。每种方案都有自己的优势，适用于不同的场景。我们分析了 BGKey 方案在窃听和三种主动攻击下的计算和通信复杂性以及安全性方面的性能。我们使用不同的系统参数进行广泛的模拟，以评估其性能。 CGKG 是生成组密钥最高效、最准确的方法，但它依赖于可信射频源 (RFS)，并且在三种方案中，在窃听和三种主动攻击下安全性最差。与 CGKG 相比，DGKG 表现出更好的安全性和更高的密钥生成率（KGR），以防止窃听和三种主动攻击。然而，当BD组的大小增加时，组密钥的比特不一致率(BDR)增加。与DGKG相比，DHGKG显着增强了组密钥生成的性能，并保留了针对窃听和三重主动攻击的出色安全性。
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.