@article{CHEN2026, 
author = {Yong CHEN and Bingwang ZHANG and Zhaofeng XIN},
title = {Security handover authentication scheme for high-speed railway symbiotic network based on NTRU lattice},
year = {2026},
journal = {Journal of Beijing University of Aeronautics and Astronautics},
volume = {52},
number = {4},
pages = {1076-1087},
keywords = {railway wireless communication, symbiotic network, handover authentication, NTRU lattice encryption, communication efficiency},
url = {https://www.sciopen.com/article/10.13700/j.bh.1001-5965.2024.0010},
doi = {10.13700/j.bh.1001-5965.2024.0010},
abstract = {A high-speed railway symbiotic network security handover authentication scheme based on NTRU lattice is proposed to address the issues of identity leakage, lack of forward and backward security, and high authentication overhead during the evolution of the high-speed railway GSM-R wireless communication system to the next generation 5G-R network during vertical handover. Firstly, a bidirectional authentication mechanism based on NTRU lattice was designed to overcome the vulnerability of identity information SUPI plaintext transmission to leakage. Second, a shared key-based hash chain encryption technique is suggested. To accomplish pre-creation of handover authentication keys, shared key generation and symbiotic network switching token strategies are created, guaranteeing dynamic updates of shared keys and forward and backward security. Then, using the Chinese remainder theorem and timestamp mechanism, the confidentiality of the session key was achieved, and the handover authentication of the symbiotic network was completed. Finally, the security of the proposed method was analyzed using BAN logic theory and TAMARIN protocol simulation verification tools. The findings demonstrate that, in comparison to comparable techniques, the suggested approach guarantees identity anonymity and forward and backward key security, can successfully fend off DoS and man-in-the-middle attacks, has lower switching costs, and can satisfy the demands of seamless handover authentication for high-speed rail symbiotic network security.}
}