COMMUNICATION KEY GENERATION IN AN AVIONICS NETWORK AND METHOD FOR GENERATING COMMUNICATION KEYS FOR NETWORK PARTICIPANTS IN AN AVIONICS NETWORK

摘要

An avionics network (100) comprises a data bus system (B) and a multiplicity of network users (10) which are connected to the data bus system (B) via network interfaces (8). Each of the network subscribers (10) has a sampling device (3) coupled to the network interface (8), which is designed to read signal data (NP) transmitted via the data bus system (B) during a sampling period that can be synchronized by the data bus system (B) and to use it in to convert a character string of digitized sampled values (ND), a key generating device (4) coupled to the sampling device (3), which is designed to use the character string of digitized sampled values (ND) generated by the sampling device (3) as a functional argument of a cryptographic password-based key derivation function, PBKDF, to use and to generate a cryptographic key (Ki) as the output value of the PBKDF, and an encryption device (6) which is designed to transfer communication data (D) of the network subscriber (10) with the cryptographic key (4) generated by the key generation device (4). Ki) to encrypt.