A Secure Identity Authentication Protocol for Edge Data in Smart Grid Environment

Edge computing uses devices deployed at the edge of the network to preprocess data to reduce the computing pressure on the central server. Through edge computing, smart grid can process large amounts of data faster, meeting real-time, reliability, and high-efficiency requirements. However, as the number of edge devices continues to increase, the problem of leakage and tampering of private data is gradually exposed. In order to solve this problem, this paper proposes a lightweight identity authentication scheme suitable for smart grid environment based on Elliptic Curve Encryption (ECC) technology. In the proposed protocol, we encrypt the identity and key information through ECC, and use the timestamp to verify the validity of the session. In addition, the proposed protocol is encrypted with a random number for each round of authentication, and an attacker cannot crack our protocol through a replay attack. Experimental analysis shows that the proposed protocol is safety and key information will not be leaked. Finally, the cost analysis shows that the proposed protocol has lower communication and lower calculation cost than other that of related protocols, and is suitable for deployment in large-scale intelligent smart grid environments.