Method for secure data transmission in an automation system encompassing several network nodes, computer program and automation system

摘要

The method involves detecting (101) network nodes, which are connected by an unsecured network, and determining (102) a range of network nodes on the basis of detected network nodes. A communication is secured (104) between nodes on the basis of the transmitted signature keys. Independent claims are included for the following: (1) a computer program for secured transmission of data; and (2) an automation system, which has network nodes.