Central Check Device for Vehicle Sequence Control Security

A central check device is introduced as an intermediary between the communication bus and the controllers. This central device performs the computationally intensive check routines to verify enable message authenticity, while controllers only need to communicate with this central device. The check device acts as a mediator that offloads the complex verification tasks from individual controllers, maintaining security while reducing controller complexity.

The verification functions of multiple controllers are merged into a single central check device. Instead of each controller independently performing check routines, the central device consolidates these functions, performing all authenticity verifications in one location. This merging reduces the computational burden and complexity distributed across multiple controllers while maintaining or improving verification reliability.

The central check device serves as an intermediary that provides manipulation protection without requiring special hardware or software in each controller. The central device handles all security-critical operations, allowing controllers to be manufactured with standard, cost-effective components while maintaining high security through the centralized verification system.

The solution replaces expensive, specialized controller components with a single centralized security device. Individual controllers can use simpler, cheaper hardware and software since the heavy security functionality is provided centrally. This approach reduces manufacturing costs for controllers while maintaining manipulation protection through the central check device.