Data protection in bus system involves combining useful data in data to be transmitted with offset value in auxiliary variable to form data security byte transmitted with auxiliary variables

摘要

The method involves providing the data to be protected for transmission in the bus system with The method involves providing additional security information. The useful data in the data to be transmitted are combined in the transmitter with an offset value in an auxiliary variable to form a data security byte that is transmitted with the auxiliary variables. The received useful data are combined with the offset variable in the receiver and a transmission error is detected if the resulting data deviate from the received data security byte. The method involves providing the data to be protected for transmission in the bus system with additional security information. The useful data in the data to be transmitted are combined in the transmitter with an offset value in an auxiliary variable to form a data security byte that is transmitted with the auxiliary variables. The received useful data are combined with the offset variable in the receiver and a transmission error is detected if the resulting data deviate from the received data security byte. Independent claims are also included for the following: a program and a data processing system for implementing the method.