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1. (WO2018050491) MONITORING SECURITY-RELEVANT FUNCTIONS BY MEANS OF A NON-SECURE COMPUTING UNIT

Pub. No.:    WO/2018/050491    International Application No.:    PCT/EP2017/072240
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Wed Sep 06 01:59:59 CEST 2017
IPC: G06F 11/07
G06F 11/16
G06F 11/26
G06F 11/36
G06F 11/00
Applicants: CONTINENTAL AUTOMOTIVE GMBH
Inventors: REICHENBACH, Frank
Title: MONITORING SECURITY-RELEVANT FUNCTIONS BY MEANS OF A NON-SECURE COMPUTING UNIT
Abstract:
A first aspect of the invention relates to an error monitoring circuit (200) of a control device (500) for a vehicle. In this case, at least one computing unit is a more secure computing unit (110) which comprises operating a monitoring function (120) and monitoring a monitoring function (125). Furthermore, at least one computing unit of the complex computing unit may be a more non-secure computing unit (130) which has a monitoring function (135) for monitoring the secure computing unit (110). The practice of monitoring the monitoring function (125) of the secure computing unit (110) specifically changes the operation of the monitoring function (120) of the secure computing unit (110) in order to induce errors in the monitoring function (135) of the non-secure computing unit (130). The monitoring function (135) of the non-secure computing unit (130) must detect the induced errors in the operation of the monitoring function (125) of the secure computing unit (110) and must report these errors to the monitoring of the monitoring function (125) of the secure computing unit (110).