Method and System for Secure Time Synchronization
AssigneeSiemens Aktiengesellschaft
InventorsJochen BALDUF, Anna PALMIN
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Abstract
System and method for secure time synchronization in an industrial facility, wherein a synchronization request of a facility component is transmitted to a registration service of a certificate management of the facility and the synchronization request is examined by the registration service, where the synchronization request includes a signature of the requesting facility component, and where depending on an outcome of the examination, a synchronization response is then transmitted to the requesting facility component a system time of the facility component is matched to a system time of the registration service based on the synchronization response.
Claims16
-12. (canceled)
A method for secure time synchronization in an industrial plant, the method comprising:
- transmitting a synchronization request of a plant component to a registration authority of a certificate management of the plant, the synchronization request comprising a signature of the requesting plant component;
- checking the synchronization request via the registration authority;
- transmitting a synchronization response to the requesting plant component as a function of a result of the check;
- and
- adapting a system time of the plant component to a system time of the registration authority based on the synchronization response.
A system for secure time synchronization in an industrial plant, comprising:
- a server including a processor and memory;
- and
- a registration authority for certificate management, said registration authority being configured to check a certificate application (ir, cr, kur) of a plant component;
- wherein the registration authority is furthermore configured to receive a synchronization request from the plant component, the synchronization request comprising a signature of the requesting plant component, and furthermore configured to check said synchronization request, and furthermore configured to transmit a synchronization response to the requesting plant component as a function of a result of the check, a system time of the plant component being adaptable to a system time of the registration authority based on said synchronization response.
Dependencies are inferred from the claim text.