Abstract:
The rapid development of electric power business has led to the expansion of its network security boundary. However,while most of electric power business systems stay at the stage of centralized identity or federated identity, which is difficult to meet new demands such as massive access, heterogeneous authentication, and frequent interaction. First, this paper proposes a blockchain-based distributed authentication system with alliance trust applicable to the power industry. Then, this paper analyzes the applicability of the system from three perspectives: network architecture, user identity control, and privacy protection. Its system architecture and operation mechanism are elaborated. The alliance digital identity is designed, and the identity information is stored in the distributed identity ledger according to the consensus and privacy protection policies. The full lifecycle management of digital identity is provided, and the cross-domain secure sharing and autonomous control of identity data as well as the crossdomain identity authentication of users are realized. Finally, the solution ideas based on this system are proposed to address the identity authentication bottlenecks faced by three industry scenarios: charging ecosystem of charging piles, safety management of power grid personnel, and power supply chain finance.