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. 17, 2023
Filed:
May. 23, 2022
Fisher Controls International Llc, Marshalltown, IA (US);
Kenneth William Junk, Marshalltown, IA (US);
FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US);
Abstract
An example method to obtain process data associated with a process control system received from a field device includes identifying, at a computing device, associated data and a payload included in the data packet, the associated data including a source bit, determining, at the computing device, a type of connection between the field device and the computing device based on the source bit, determining, at the computing device, an encryption key identifier and an initialization vector based on an auxiliary data packet received prior to the data packet, generating, at the computing device, a nonce value based on the source bit and the initialization vector, the nonce value indicative of an input to a data encryption algorithm used by the field device to encrypt the payload, and extracting, at the computing device, the process data associated with the process control system from the payload.