Empowering Secure and Authenticated Multi-WSN Communication Through a Hybrid Blockchain Framework

Security has long been a paramount concern for IoT devices due to their frequent exposure to hostile environments. Ensuring the authenticity of the hub is a crucial means of upholding its security. Traditional approaches for IoT identity verification heavily rely on external sources deemed trustworthy. However, numerous IoT environments are susceptible to single point failures and are restricted by inherent limitations. With the advent of decentralized blockchain technology, viable IoT frameworks have become more attainable. This study proposes a novel multi-WSN validation mechanism for the Web of Things. Based on their capabilities, IoT hubs are categorized into base stations, cluster head hubs, and conventional hubs, establishing a network with varying levels of granularity. To address these challenges, a hybrid blockchain model is introduced, incorporating both public and local chain hubs within the blockchain system. This hybrid paradigm enables mutual authentication of hub identities across diverse communication scenarios by leveraging a local blockchain for routine hub identity verification and a public blockchain for cluster head hub character validation. Extensive analysis demonstrates that the framework ensures comprehensive security measures and demonstrates advanced performance capabilities.