Evaluation of Applying Blockchain Technology to IoT Data Distribution
Hayato Kumazaki, Osamu Mizuno · 2023
We have proposed the Ticket-based Access Control Method. It provides access control with a token called a ticket and Tag ID. A token has an ID for data acquisition tied to multiple devices. The Ticket-based Access Control Method realizes the IoT data distribution infrastructure that supports the collection/analysis, scalability, and security of various types of IoT data. It includes the TAAI node (Ticket Authentication and Authorization Infrastructure node), which acts as a role of Broker in the Pub/Sub communication model. It is always involved in authentication and authorization. The TAAI is a single point of failure because when the TAAI fails, the entire system will go down. Therefore, to eliminate the single point of failure in the Tag ID-based Pub/Sub model using Ticket-based AC, we propose a method to distribute the processing performed by the TAAI to each node by applying blockchain (BC) technology. Having the BC take charge of authentication can reduce the load on each node.