Managing Multiple Identities of IoT Devices Using Blockchain

The popularity of IoT has opened avenues for many new solutions such as social network of devices and web of things where IoT devices may have multiple logical identities. Managing multiple logical identities of voluminous number of IoT devices securely is a challenging task. As a result, efficient identity management of IoT devices has become an important research topic. The existing literature on identity management of IoT devices is currently restricted to only one logical identity per device. The paper presents a solution using blockchain for managing multiple identities of IoT devices. The usage of blockchain also helps in authentication of mobile IoT devices using logical identities. The implementation of the solution is carried out using Hyperledger blockchain platform and its performance is evaluated using a simulator developed in Python. The results validate the feasibility and efficiency of the proposed solution.