Full-transparent, coded, multi-masterable communication providing method, involves performing code exchange in initialization phase, where authentication takes place during initialization of cipher, which is made possible by secret code

摘要

The method involves assigning a safety bus controller (1) for controlling coding, where the controller is provided as a transparent unit between a bus and a component (2). A stream cipher is provided for bus coding. Code exchange is performed in an initialization phase, where an authentication takes place during initialization of cipher, which is made possible by a secret identification code that is present in the safety bus controller. The code exchange is signaled at the safe bus-controller by bus signals or clock.