Affiliations: [a]
School of Computer Science, Wuhan University, Wuhan, China
| [b]
School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore
Correspondence:
[*]
Corresponding author. Yi Xie, School of Computer Science, Wuhan University, Wuhan, China. E-mail: yix@whu.edu.cn.
Abstract: Today, the manner in which we communicate has greatly advanced. The technology is not just about machines, but people with technology together. Machine-to-machine (M2M) communication is unavoidable in the Internet of things. However, at the same time, there are more attacks against the M2M system. Therefore, a reliable and secure authentication mechanism is required. Blockchain technology is decentralized and highly secure while being tamper-proof. This protects M2M service providers by eliminating the single point of failures. This paper proposes a blockchain-based authentication scheme that uses a practical Byzantine fault tolerance (pBFT) consensus mechanism for M2M security in cyber physical systems. By implementing a blockchain to an M2M system, it provides an ID for devices on the blockchain. Simulation results have shown that the data on the chain cannot be altered. A pBFT consensus algorithm also ensures that the blockchain network is able to come to a consensus with faults.
