Enhance the trust between IoT devices, mobile apps, and the cloud based on blockchain

The current IoT platform is vulnerable to remote device hijacking and substitution attacks, primarily due to weak authentication and authorization mechanisms between IoT devices, mobile apps, and the cloud. Such attacks can lead to privacy breaches and even threaten the safety of users’ lives and properties. Thus, ensuring the trustworthiness of IoT devices is crucial. In this paper, we propose a blockchain-based trust management approach to enhance the trust between IoT devices, mobile apps, and the cloud. We have implemented our approach by combining Ethereum with a smart home solution to create a distributed trust management system for IoT devices. Our evaluation results demonstrate the effectiveness of our approach in detecting the above attacks, with acceptable performance.