Cyber Security Protection of Distribution Automation System Based on Hybrid Encryption Algorithms

摘要

A dual protection scheme is designed to realize the bidirectional identity authentication and business data encryption between distribution master station and terminal. An once two–way password authentication protocol based on the symmetric SM4 and asymmetric SM2 encryption algorithm and message authentication code(MAC)combination is proposed. This protocol can resist malicious illegal attacks, prevent the distribution network system from being maliciously destroyed and paralyzed. The integrity and confidentiality of the data in distribution network automation system is ensured.