Method for recognizing a manipulation of a sensor and/or sensor data of the sensor

US9252945B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Matthew Lewis · Reutlingen, DE
• Markus Ihle · Reutlingen, DE
• Robert Szerwinski · Eßlingen, DE
• Jamshid Shokrollahi · Ludwigsburg, DE
• Benjamin Glas · Stuttgart, DE

Key dates

• Filing date: Apr 4, 2014
• Grant date: Feb 2, 2016
• Expiry date: Jul 30, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2209/84
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for data transmission between a sensor and an electronic control and/or regulating unit (ECU), the transmitted sensor data (x1, . . . , xt) and the sensor being secured against a manipulation. The system provides a particularly simple, but very secure method for manipulation protection, the sensor data (x1, . . . , xt) being transmitted via a first logical data transmission channel at a first data transmission rate, and security data (MAC; CMAC) for securing the transmitted sensor data and/or the sensor being transmitted via a second logical data transmission channel at a second data transmission rate from the sensor to the ECU. At least once at the beginning of a data transmission session, a session key is transmitted from the ECU to the sensor via a third logical data transmission channel and received by the latter, the session key being used at least for the ongoing session to generate the security data.