The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2024
Filed:
Nov. 10, 2021
Abb Schweiz Ag, Baden, CH;
Soeren Finster, Karlsruhe, DE;
Florian Kohnhaeuser, Riedstadt, DE;
ABB Schweiz AG, Baden, CH;
Abstract
A method for protecting the integrity of measurement data acquired by a sensor includes: in response to the measurement data being acquired, determining, by the sensor, whether an aggregate value has already been generated, and: if the aggregate value has not yet been obtained, mapping, by a predetermined aggregation function that takes the measurement data as a mandatory argument and a previously generated aggregate value as an optional argument, the measurement data to the aggregate value; whereas if the aggregate value has already been obtained, mapping, by the predetermined aggregation function, the combination of the aggregate value and the measurement data to a new aggregate value; and in response to a predetermined condition being met, computing, using a secret key of the sensor, a signature of the aggregate value; and outputting the signature via a communication interface of the sensor, and/or storing the signature in a memory.