IN-CAR COMPUTER SYSTEM, VEHICLE, KEY GENERATION DEVICE, MANAGEMENT METHOD, KEY GENERATION METHOD, AND COMPUTER PROGRAM

摘要

In a secure hardware extension (SHE)-B, an initial key is set to a KEY_N key usable in a verification process and a generation process for a message authentication code. In an SHE-A, a master key is set to a KEY_N key usable in the verification process and the generation process for the message authentication code, the master key being used together with an identifier of an authenticated electronic control unit (ECU) for generating the message authentication code to be used as the initial key. A central processing unit (CPU) causes the message authentication code for the identifier of the authenticated ECU to be generated using the master key through the SHE-A and executes a process of authenticating validity of the authenticated ECU by using the generated message authentication code.