Data communication protecting method for motor vehicle, involves utilizing actual code for protecting function by each signal sequence, and determining code of signal sequence for implementing predetermined function before call of function

摘要

#CMT# #/CMT# The method involves exchanging signals by two on-board electronic components of a motor vehicle, where each signal serves for implementing a function. An actual code is utilized for protecting the function by each signal sequence. The code of the signal sequence is determined for implementing a predetermined function before call of the function. The function stands in relation to a time-critical function that is to be implemented from the signal sequence. #CMT# : #/CMT# An independent claim is also included for a system for protecting data communication between two on-board electronic components. #CMT#USE : #/CMT# Method for protecting data communication between two on-board electronic components of a motor vehicle over a data bus. #CMT#ADVANTAGE : #/CMT# The method protects the data communication between the two on-board electronic components of the motor vehicle, with cryptographic security of functions with as small a delay as possible. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a flow chart of a method for protecting data communication between two on-board electronic components.