Title: LBCDA: lightweight blockchain-assisted cross-domain authentication scheme with privacy protection for SWIM

Authors: Lizhe Zhang; Jiahao Li; Yiao Ma; Zhijun Wu; Ruiqi Li

Addresses: School of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China ' School of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China ' School of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China ' School of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China ' School of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China

Abstract: As a global civil aviation information-sharing service platform, cross-domain authentication of system wide information management (SWIM) has attracted much attention. Due to the inability of existing authentication schemes to meet the needs of lightweight users such as aircraft for secure cross-domain access to SWIM in the aircraft access to SWIM application, we propose a lightweight blockchain-assisted cross-domain authentication scheme for SWIM. The scheme uses certificateless cryptography to generate user private keys and achieves mutual authentication and key agreement for cross-domain users based on the elliptic curve Diffie-Hellman. Additionally, cross-domain users share authentication public parameters and anonymous identity through a consortium blockchain, thereby protecting identity privacy and establishing trust among them. We use SVO logic to prove that the authentication protocol realises its design goals and utilise the formal verification tool Scyther to demonstrate the scheme's security. Compared to the four existing schemes, our scheme has lower computational and communication overhead.

Keywords: system wide information management; SWIM; blockchain; cross-domain authentication; lightweight.

DOI: 10.1504/IJICS.2025.148457

International Journal of Information and Computer Security, 2025 Vol.28 No.1, pp.20 - 50

Received: 09 Jul 2024
Accepted: 30 Apr 2025
Published online: 05 Sep 2025 *