<p>Carrier frequency offset (CFO)-based physical layer authentication in flying Ad-hoc network (FANET) faces security challenges due to the highly dynamic and decentralized nature of the networks. Relying on single-point CFO-based authentication is usually vulnerable to spoofing attacks if the adversary has sufficient knowledge of the channel characteristics and possesses advanced signal processing capabilities. To this end, we propose the CoPhA framework specifically for FANETs, which exploits the physical layer feature CFO as its core factor for collaborative authentication. The framework consists of four main steps: CFO estimation, sharing information among nodes, making collaborative decisions based on node reputation or other factors, and dynamically adjusts to network changes. By integrating CFO-based authentication into a collaborative context, CoPhA enhances authentication performance under various conditions. Simulation results demonstrate that CoPhA consistently outperforms non-collaborative authentication methods, achieving an authentication accuracy of 0.99599 with extremely low false alarm rate and miss detection rate of 0.06357 and 0.00088, respectively. Compared to existing schemes, CoPhA presents a higher potential to secure future FANETs.</p>

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Copha: collaborative physical layer authentication for flying Ad-hoc network based on carrier frequency offset

  • Yi Yin,
  • Dongmei Zhao,
  • Zhengang Zhao,
  • Junpeng Zhang,
  • Shuiguang Zeng

摘要

Carrier frequency offset (CFO)-based physical layer authentication in flying Ad-hoc network (FANET) faces security challenges due to the highly dynamic and decentralized nature of the networks. Relying on single-point CFO-based authentication is usually vulnerable to spoofing attacks if the adversary has sufficient knowledge of the channel characteristics and possesses advanced signal processing capabilities. To this end, we propose the CoPhA framework specifically for FANETs, which exploits the physical layer feature CFO as its core factor for collaborative authentication. The framework consists of four main steps: CFO estimation, sharing information among nodes, making collaborative decisions based on node reputation or other factors, and dynamically adjusts to network changes. By integrating CFO-based authentication into a collaborative context, CoPhA enhances authentication performance under various conditions. Simulation results demonstrate that CoPhA consistently outperforms non-collaborative authentication methods, achieving an authentication accuracy of 0.99599 with extremely low false alarm rate and miss detection rate of 0.06357 and 0.00088, respectively. Compared to existing schemes, CoPhA presents a higher potential to secure future FANETs.