Data Source Authentication Protocol for Aviation Broadband Communication System

The Aviation Broadband Communication System (ABCS) plays a crucial role in the modern civil aviation field. However, when controlling the broadcast information of Broadcast Control Channel (BC), the system faces network security issues such as man in the middle attacks and pseudo base station attacks, which have become increasingly serious. Therefore, when designing and developing aviation broadband communication systems, it is necessary to fully consider the guarantee mechanism for ensuring secure data transmission. This article focuses on the BC control channel and successfully implements source authentication for broadcast control data using the Timed Efficient Stream Loss Tolerant Algorithm Protocol (TESLA) combined with the SM3 algorithm. The proposed method effectively solves the security issues faced by broadcast data. By analyzing the security overhead brought by the added security mechanisms, we have proven that this method is superior to packet-by-packet signature authentication protection and hash chain authentication schemes, thus meeting the requirements of aviation digital communication application scenarios.