Chinese Journal of Network and Information Security ›› 2021, Vol. 7 ›› Issue (6): 88-98.doi: 10.11959/j.issn.2096-109x.2021054

• TopicⅡ: Blockchain Technology • Previous Articles    

Credible distributed identity authentication system of microgrid based on blockchain

Guanqun YANG1, Yin LIU1, Hao XU1, Hongwei XING2, Jianhui ZHANG2, Entang LI2   

  1. 1 Information & Telecommunications Company.State Grid Shandong Electric Power Company, Ji'nan 250001, China
    2 Shandong Luruan Digital Technology Co., LTD, Ji'nan 250001, China
  • Revised:2021-10-13 Online:2021-12-01 Published:2021-12-01
  • Supported by:
    State Grid Shandong Electric Power Company Science and Technology Project(520627200004)

Abstract:

Most of the blockchain-based identity authentication systems are based on public blockchain, which are still essentially traditional centralized identity management and verification methods, making it difficult to meet the needs of trusted access and fine-grained access control in microgrids.Therefore, based on the FISCO BCOS consortium blockchain technology, a distributed identity authentication system supporting multi-center was designed.A DID-based identity management protocol to achieve autonomous control of user identity in a practical scenarios was designed.Distributed trusted access technology for end nodes in microgrids was studied, and privacy-protecting credentials based on zero-knowledge proof were designed.This scheme meets the requirements of trustworthy and verifiable user identity in different privacy security scenarios, and achieves autonomous control of entity identity, fine-grained access control and trusted data exchange.The usability and effectiveness of the proposed algorithm are demonstrated through system experiments and performance analysis.

Key words: microgrid, blockchain, zero-knowledge proof, privacy credentials, distributed identity authentication system, access control

CLC Number: 

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