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:
Jun. 16, 2026
Filed:
Nov. 28, 2022
Cryptography Research, Inc., San Jose, CA (US);
Winthrop John Wu, Pleasanton, CA (US);
Scott C. Best, Palo Alto, CA (US);
Joel Wittenauer, Pleasanton, CA (US);
RAmbus Inc., San Jose, CA (US);
Abstract
Multiple helper data solutions (a.k.a., helper data images) are generated to produce preselected non-random values (a.k.a., 'target values') from a physically unclonable function (PUF) circuit. Therefore, multiple preselected PUF output values may be generated for a given integrated circuit die, where each the output values are derived from a combination of the chip-unique PUF circuit and the chip-unique helper data solution. These helper data blocks are stored in a nonvolatile memory on the integrated circuit die. In an embodiment, the preselected non-random values may be used as secret encryption or decryption keys. In this manner, multiple secret values can be reliably stored within a chip, using a combination of the chip-unique PUF circuit and the multiple chip-unique helper data solution.