| 摘要 |
Method of detecting an unauthorized exchange of components in the case of a technical system, where the control unit ( 1 ) sends an encoded message ( 3 ) to a component ( 2 ) to be checked, in a data field of the message ( 3 ) a randomly generated or not easily reproducible value ( 5, 6 ) being entered, which is used for checking the installed component ( 2 ). The component ( 2 ) accesses an assignment field ( 8 ) and, as a result, assigns an identification ( 9 ) to each not easily reproducible or random value ( 5, 6 ) transmitted together with the message ( 3 ), and the component ( 2 ) transmits the identification corresponding to the value ( 5, 6 ) back to the control unit ( 1 ). The control unit ( 1 ) decides on the basis of the identification ( 9 ) whether the component ( 2 ) is that the component ( 2 ) which is authorized for use in the particular technical system.
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