TrustPIoT: Blockchain-based Anonymous Authentication for Cross-Domain Intelligent PIoT

Power Internet of Things (PIoT) is a crucial technology for smart grids, and it also plays a momentous role in current electric power data transmission and sharing. Currently, an increasing demand for cross-domain interactions requires various devices belonging to different domains to cooperate, which makes traditional identity authentication mechanisms unsuitable to ensure information security and privacy during communication. In addition, centralized power IoT systems will also face concerns of single point of failure, data tampering, etc. To tackle these issues, we design TrustPIoT, a blockchain-assisted authentication scheme for cross-domain PIoT, which achieves access control between cross-domain devices while ensuring identity anonymity. We exploit an on-chain and off-chain storage mechanism to ensure the consistency of the data, by introducing a cloud server to coordinate with the blockchain network. To verify its validity, we also conduct experiments on Hyperledger Fabric to evaluate the performance of TrustPIoT.