Lightweight remote user authentication protocol for multi-server 5G networks using self-certified public key cryptography

摘要

Due to small cell deployments and multiple servers in 5G networks, a fast and anonymous mutual authentication protocol needs to be developed for complex 5G networks. In this paper, we propose a lightweight and untraceable authentication protocol for multi-server-based 5G networks. To reduce computational complexity, we employ self-certified public key cryptography based on elliptic curve cryptography to authenticate the validation of users and servers. Without pairing operations, our scheme could improve performance efficiency. Also, a formal security model is designed to prove that our protocol is secure against forgery attack due to the discrete logarithm and the computational Diffie-Hellman problem. Performance analysis further shows that our protocol has a lower communication and computational overhead. Also, our protocol could support anonymous mutual authentication.