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:
Aug. 19, 2025
Filed:
Nov. 21, 2022
Arizona Board of Regents on Behalf of Northern Arizona University, Flagstaff, AZ (US);
Bertrand F. Cambou, Flagstaff, AZ (US);
Donald Telesca, Rome, NY (US);
H. Shelton Jacinto, Rome, NY (US);
ARIZONA BOARD OF REGENTS ON BEHALF OF NORTHERN ARIZONA UNVERSITY, Flagstaff, AZ (US);
Abstract
Methods and systems for managing access to encrypted digital files are proposed. A remote or client device including an array of physical unclonable function (PUF) devices is provided. A server device has an image of the PUF, with previously measured responses. The server device randomly selects a set of responses from a first list PUF devices in its image. The server device then generates masking data to select among the first list to generate response bitstream. The response bitstream is used to encrypt a file, which sent to the client for storage. The random number is also sent. Later, the server generates an encrypted message digest from which the client can retrieve the masking data, which is used with the random number to generate a response bitstream from the client PUF to decrypt the file.