Method and computer for cryptographically protecting control communication in and / or service access to IT systems, in particular in connection with the diagnosis and configuration in an automation, control or monitoring system

摘要

In order to improve the cryptographic protection of the control communication in and / or the service access to an IT system (ITS, EBS, VS, IN), it is proposed automatically and dynamically, in particular regularly or event-controlled, or manually, in particular at the request of the user to determine by autoconfiguration whether used or activated and usable cipher suites and / or key lengths are sufficiently strong for up-to-date cryptographic protection of control communication and / or service access by: 1) polling network / system available cipher suite Reference / cipher suites and / or2) by querying or identifying blockchain information available in the network / system with "proof of work" datasets for solving complex computational problems with the detection of blockchain difficulties. Parameter as key length estimation parameter appropriate reference key length), the determined reference cipher suites and / or the reference key lengths determined by the key length estimation parameters are aligned with the used or activated and usable cipher suites and / or key lengths ,