A FISCO BCOS-Based Secure Transmission System Design and Implementation for UAV Networks

To address data security challenges in dynamic UAV (Unmanned Aerial Vehicle) networking environments, this paper proposes a lightweight transmission architecture based on the FISCO BCOS consortium blockchain. The architecture integrates device fingerprint binding and SM3 hash aggregation mechanisms, achieving high tamper detection rates and low authentication latency in a 10-node laboratory environment. Experimental results demonstrate that the system effectively defends against man-in-the-middle and replay attacks in 5 G networks, while reducing blockchain storage overhead by $68 \%$ compared to traditional solutions. This study provides a verifiable security solution for resource-constrained UAV networks.