Blockchain Based Access Control Systems

While accessing data through the Internet of Things (IoT), privacy and safety are the most important features. IoT developers have a challenging job of securing and protecting the data of the users during the development process due to the complicated nature of decentralisation and heterogeneity of the environment present in IoT. There are several access control models for the IoT available in the literature which rely on centralized architecture and raises security concerns because IoT devices can spontaneously and dynamically interact with one another. The need for secure and distributed access control architecture to overcome the single point of failure problem of a centralized entity becomes a big challenge when coupled with scalability and lightweight features. It is possible to achieve this through the use of Blockchain technology, which has recently been used to provide access control services. IoT device management would be used to manage distribution, heterogeneity, scalability, the ability to tolerate failure, security and privacy aspects of IoT devices at scale in the near future as it is useful.