Fog Computing and Blockchain for Massive IoT Deployment

The expected exponential growth of IoT devices in future years arises management issues to be resolved. Cloud computing may not be adequate for a massive scale while fog computing brings the ability to manage the distribution of controllability and manageability. Besides, such decentralized architecture is not sufficient to handle sensitive transactions, blockchain-based technology has raised hypes in implementing applications in trust-less environments. This paper proposes a blockchain-based architecture for scalable control of IoT devices. Moreover, smart contracts are developed to facilitate the ledger update process. Experimental results show that the proposed architecture is capable of providing trust on-demand changes with a negligible effect on IoT resources.