Patent · US Active

Method for authenticating a field device of automation technology

US10728037B2 · kind B2 · utility

0Cited by

3References

16Claims

0Family size

Assignee

Endress+Hauser Conducta GmbH+Co. KG · DE

Inventors

Björn Haase · Stuttgart, DE
Ralf Schmidt · Nuremberg, DE
Markus Kilian · Merzhausen, DE
Helmut Kalteis · Marktoberdorf, DE

Key dates

Filing date	Feb 7, 2018
Grant date	Jul 28, 2020
Priority date	—
Expiry date	Nov 24, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/25428
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present disclosure includes a method for authenticating a field device of automation technology with respect to a destination device. A telegram is created by the field device, which telegram includes a first data field and at least a second data field. The first data field includes information on the status of the field device and/or of the device components of the field device and/or information on the device parameterization/configuration, and a sequence counter or a time stamp. Security data are generated from the first data field via a cryptographic method, which security data are stored in the second data field. The telegram is transmitted from the field device to the destination device, wherein the destination device verifies the second data field as to authenticity or integrity upon receipt of the telegram, and wherein a first alarm is generated if the authenticity or the integrity of the second data field is not successfully verified.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.