Privacy-preserving location authentication for low-altitude UAVs:A blockchain-based approach

Efficient and trusted regulation of unmanned aerial vehicles(UAVs)is an essential but challenging issue in the future era of the Internet of Low-altitude Intelligence,due to the difficulties in UAVs'identity recognition and location matching,potential for falsified information reporting,etc.To address this challenging issue,in this paper,we propose a blockchain-based UAV location authentication scheme,which employs a distance bounding protocol to establish a location proof,ensuring the authenticity of UAV positions.To preserve the privacy of UAVs,anonymous certificates and zero-knowledge proof are used.The security of the proposed scheme is analyzed.Experiments demonstrate the efficiency and feasibility of the proposed scheme.