Distributed Multi-Attribute Anonymous Certificate Management Scheme With Fine-Grained Revocation for Uncrewed Aerial Vehicles

In unmanned aerial vehicle (UAV) scenarios, the execution of specific flight missions requires anonymous certificates containing multiple attributes as proof of authorization. However, existing certificate- management schemes are ineffective in achieving an optimal trade-off between verification overhead and attribute-level revocation. First, most existing schemes bind multiple attributes to a single certificate but typically lack the capability of fine-grained revocation at the individual attribute level. Second, most existing schemes rely on centralized certificate authorities, necessitating UAVs to apply for certificates from multiple regions separately when performing cross-regional access. This scenario increases the certificate management burden. To address these challenges, this paper proposes a distributed multiattribute anonymous certificate management scheme for UAVs. First, the proposed scheme integrates redactable signatures and dynamic accumulators, enabling the selective disclosure and fine-grained revocation of attributes within a single certificate. Second, the proposed scheme utilizes a distributed key-generation mechanism, enabling decentralized certificate issuance and secure management.