Method, controller and system for detecting infringements of the authenticity of system components

摘要

In a method for detecting infringements of the authenticity of a system component an authentication request is sent from a controller to an authentication device of the system component. A first authentication code is calculated in the authentication device by applying a shared one-way function to an identification code, stored in the authentication device, for the system component. A second authentication code in the controller is calculated by applying the shared one-way function to an identification code, stored in the controller, for the system component, and an authentication response including the first authentication code is sent from the authentication device to the controller. The first authentication code is compared with the second authentication code in the controller for detecting infringements of the authenticity of the system component.

主权项

1. A method for detecting infringements of an authenticity of a system component, said method comprising:
sending an authentication request from a controller to an authentication device of the system component; calculating a first authentication code in the authentication device by applying a shared one-way function to a first identification code, stored in the authentication device, for the system component; calculating a second authentication code in the controller by applying the shared one-way function to a second identification code, stored in the controller, for the system component; sending an authentication response with the first authentication code from the authentication device to the controller; and comparing in the controller the first authentication code with the second authentication code for detecting infringements of the authenticity of the system component;
replacing the second identification code stored in the controller with the calculated first authentication code received by the controller; andreplacing the first identification code stored in the authentication device with the calculated first authentication code.