Towards Lightweight Authorisation of IoT-Oriented Smart-Farms using a Self-Healing Consensus Mechanism

This paper proposes a novel consensus mechanism towards access control in networks populated by constrained devices. The research explores existing mechanisms in the distributed technology blockchain, towards limiting scalability of data cumulation for microcontrollers, specifically the ESP32. The work utilises security functions native to the featured ESP32, for a more granular approach than binary authorisation; security solutions such as the de facto standard TLS adopts an ‘in or out’ approach, and this can invite numerous problems. The design proposes a hybrid design to produce a robust solution that suffers from neither the vulnerabilities of centralisation or data aggregation of distribution. The decentralised proposal is then tested using formal verification; model-checking using the AVISPA and SPAN tools. The research concludes a safe design.