TechnicalThe Black Channel: Moving Network Safety to the Sender and Receiver
A CAN frame can pass every checksum on the bus and still carry the wrong request. One way to argue the integrity of a safety-related message rests it on the sender and the receiver, not on the network between them. This is the black channel idea, and the most common reason end-to-end protection exists. New article, with an electric parking brake release request replayed by a gateway as the example.








