Blockchain-Enabled Moving Target Defense for Secure CR Networks

The ever-increasing demand for high-data services and the emergence of new use cases with stringent latency, spectral, and energy efficiency requirements present new challenges for 6G networks and necessitate the development of novel solutions to address these issues. Therefore, in this paper, we present a flexible cognitive radio (CR) architecture for establishing and maintaining a resilient network. The network is managed by a novel situational blockchain-based framework that dynamically reprograms the network topology and transmitted data types (real/fake) at runtime to enable a moving-target defense (MtD) approach against attacks and failures. The presented solution has been mathematically modeled and analyzed. Simulation results demonstrates the superiority of the proposed system in terms of security, credibility, and integrity.