IoT Security Function Distribution via DLT

With the rapid deployment of IoT devices, there is an increasing concern on the security and privacy of the devices. We are now witnessing newer and higher intensity attacks that exploit IoT devices. Although security-by-design is important and necessary, the effectiveness and sustainability of the buildin security defense may still be questionable. This has created new opportunities for third-party security service providers to enter the market. In this work, we leverage the distributed ledger technology (DLT) to propose a solution for distributing IoT security functions. We design the system architecture and describe the different types of operations to be executed. Our system also allows for reputation scoring that further adds credibility to the security functions distributed in the network.