A Lightweight Multi-Party Key Authentication Management Protocol Based on Cyber-Physical Systems

Abstract

In the era of digital healthcare, secure information interaction among users, gateways, and multiple devices in a cyber-physical system (CPS) is very important, but also very challenging. However, existing authentication schemes can only accomplish authentication between gateways and smart devices, and do not consider the authentication needs of gateways, users and multiple devices. In addition, users need to initiate multiple key authentication requests to complete multi-device authentication, which greatly increases the communication overhead and security risks. In response, this paper proposes a lightweight multi-party key authentication protocol based on cyber-physical system. On the basis of meeting the user, gateway and multi-device authentication requirements, the key authentication process is effectively simplified by the CPS architecture, and the user only needs to initiate a request to complete the three-party multi-device authentication, which greatly reduces the communication overhead, reduces the security risks, and improves the scheme's adaptability and generalization ability in largescale device scenarios. Finally, the mathematical analysis confirms the reliability of the proposed scheme and points out that the scheme reduces the computational and communication requirements compared with similar methods, which is crucial for CPSs with limited resources.