Design and Implementation of a Multi-Level Dynamic Key Management Scheme for Secure Aeronautical Broadband Communication Systems

In order to meet the high -speed, low latency and high reliability requirements of aviation broadband communication scenarios, this study proposes a light multi -level dynamic key management solution for safe aviation broadband communication systems, which is designed to include root keys, main keys and session density secrets. The three -layer key structure of the key to improve safety and efficiency. The national secret algorithm provided by the domestic password card hardware has achieved symmetrical key generation, distribution, dynamic updates and security storage mechanisms. The method proposed by this study can ensure the security of the forefront, minimize risks and reduce key management overhead, which provides a key guarantee for the data security transmission process of the aviation broadband communication system.