Blockchain-based Data Protection Architecture for Internet of Things

With the development of Internet of Things (IoT), the IoT data security issues have raised great attention of academics and industry. However, due to the IoT essential characteristics of decentralization and distribution, traditional centralized architecture suffers from security and scalability challenges. The blockchain technology has been widely applied in industrial domains such as finance and logistics because of its key features of decentralization, data traceability, immutability and auditability which will greatly benefit the IoT system. In this paper, the foundamental of blockchain technology is summerized and the blockchain-based data protection architecture for IoT is proposed. The data transmission, storage and sharing schemes are detailed discussed and evaluated. The result indicates that the implement of blockchain technology will prevent typical attacks and bring benefit to data security of IoT.