CASAR: Cross Uc-domain Authentication Scheme with Attack Resistance for SUNet
Renmin Zhao, Liangmin Wang, Xiaoyu Zhang · 2024
Satellite-assisted Unmanned-Aerial-Vehicle Network (SUNet) is an emerging network leveraging satellite communication to boost UAV connectivity and coverage in remote or challenging environments. In SUNet, UAVs frequently require cross Uncontrollable-domain (Uc-domain) authentication, which refers to UAVs from their controlled domains authenticating with the Uc-domain entities, such as UAVs authenticating with allied forces in the Uc-domain for military applications. Unlike handover authentication and traditional cross-domain authentication, cross Uc-domain authentication confronts more complex security environments. Specifically, there is the problem with the absence of identity information and the need for enhanced attack resistance and overhead reduction. In this paper, we present CASAR, the first cross Uc-domain authentication scheme for SUNet. CASAR leverages satellites to assist in transmitting authentication messages and combines Physical Unclonable Function (PUF) and chaotic map to ensure optimal resistance to attacks and maintain lightweight overhead. We prove that CASAR can robustly defend against various attacks targeting UAV networks. The experimental results show that CASAR has less overhead than related works.