METHOD FOR MANIPULATION PROTECTION OF A BUS SYSTEM BETWEEN AT LEAST TWO SYSTEM COMPONENTS

摘要

A method for a manipulation protection of useful data packets to be transmitted via a bus system between at least two system components, wherein the system components include a signing and signing test unit by which data packets can be generated and tested. A first one of the system components generates an independent protective data packet with protective information for a useful data packet to be transmitted via the bus system, which protective data packet is independent of this useful data packet but, can be allocated unambiguously to it, after which the generated protective data packet is sent out separately from the associated useful data packet via the bus system to the second one of the system components and a verification of the authenticity of the useful data packet to be transmitted is effected by the transmitted protective data packet by the second one of the system components.

主权项

1. A method for a manipulation protection of useful data packets to be transmitted via a bus system between at least two system components, wherein the at least two system components each comprise a signing unit that generates data packets and a signing test unit that tests generated data packets, the method comprising:
a first one of the system components generating an independent, protective data packet with protective information for a useful data packet to be transmitted via the bus system, wherein the protective data packet is independent of the useful data packet but is allocated unambiguously to the useful data packet; subsequently, transmitting the generated protective data packet separately from the associated useful data packet via the bus system from the first one of the system components to the second one of the system components, and transmitting a verification of authenticity of the useful data packet from the second one of the system components in response to receipt of the transmitted protective data packet by the second one of the system components.