Blockchain-based identity authentication and data interaction scheme for Industrial Internet of Things

Abstract

There are numerous identities in the Industrial Internet of Things (IIoT), and the security of the industrial data generated by these identity devices is crucial. However, problems such as single point of failure caused by centralization and inefficiencies of participant identity authentication are still persistent in the current IIoT. To address these problems, we propose a blockchain-based identity authentication and data interaction scheme for IIoT. In our scheme, we first design a decentralized and staged key generation authentication method based on the Sign Identity Composite (SIC), which uses key generation in stages to realize efficient identity authentication based on Schnorr’s non-interactive zero-knowledge proof. Then, we propose asynchronous data interaction based on the Diffie–Hellman (DH) key negotiation algorithm and SIC. Finally, we prove the security of our scheme through security analysis, and the performance is evaluated and analyzed by simulation experiments. The results show that our scheme can perform identity authentication and asynchronous data interaction while maintaining security, outperforms the comparison scheme.