Method for recognizing a manipulation of a sensor and/or sensor data of the sensor
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United States of America Patent
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Feb 2, 2016
Grant Date -
Oct 9, 2014
app pub date -
Apr 4, 2014
filing date -
Apr 9, 2013
priority date (Note) -
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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.
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