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:
May. 24, 2022
Filed:
Feb. 08, 2019
Fisher Controls International Llc, Marshalltown, IA (US);
Kenneth William Junk, Marshalltown, IA (US);
Fisher Controls International LLC, Marshalltown, IA (US);
Abstract
An example method includes, in response to receiving a byte array including process data, determining whether auxiliary data is to be transmitted from a field device based on a counter, the auxiliary data including an encryption key identifier and an initialization vector, when auxiliary data is to be transmitted, transmitting a first data packet including the auxiliary data to the remote device, and determining a value for a source bit based on a type of connection between the field device and the remote device, the source bit and the counter included in associated data. The method further includes generating a nonce value based on the source bit and the initialization vector, encrypting a payload including the byte array based on the encryption key identifier and the nonce value, and transmitting a second data packet to the remote device, the second data packet including the associated data and the encrypted payload.