Patent ID: 9252945
Filing Date: 2016-02-02
CPC Classification: H04L

Claim Text:
1. A method for providing data transmission between a sensor and an electronic control unit, the method comprising: securing sensor data and the sensor against a manipulation, wherein the sensor data are transmitted via a first logical data transmission channel at a first data transmission rate from the sensor to the control unit, and security data for securing the transmitted sensor data and the sensor are transmitted via a second logical data transmission channel at a second data transmission rate from the sensor to the control unit; and transmitting, at least once at the beginning of a data transmission session, via a third logical data transmission channel, a session key from the control unit to the sensor and received by a latter; wherein the session key is used by the sensor at least for an ongoing session to generate the security data, and wherein a message authentication code is generated by the sensor at least via a part of the sensor data to be transmitted according to an encryption method while using the session key and is transmitted at least partially via the second data transmission channel as security data to the control unit and received by the latter, and wherein only n bits which are selectively chosen and which correspond to only a part of the message authentication code generated in the sensor are transmitted via the second data transmission channel to the control unit.