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:
Mar. 08, 2022
Filed:
Nov. 12, 2019
Nxp B.v., Eindhoven, NL;
Bjorn Fay, Brande-Hörnerkirchen, DE;
NXP B.V., Eindhoven, NL;
Abstract
Various embodiments relate to a method for generating a bit stream in a physical unclonable function (PUF) system, including: receiving a set of values from a plurality of physical devices in the PUF system in a first order; sorting the set of values into a second order; for each of the L highest values, setting a corresponding levelTag value to a first bit value and setting a corresponding usageTag value to a first usage value that indicates that the levelTag for the corresponding value is to be used to generate the bit stream, wherein L is a level setting; for each of the L lowest values, setting a corresponding levelTag value to a second bit value and setting a corresponding usageTag value to the first usage value, wherein the first bit value is different from the second bit value; setting the usageTag value for all other values that are not the highest L values or the lowest L values to a second usage value that indicates that the corresponding value is not to be used to generate the bit stream; generating the bitstream as the levelTag values that have an associated usageTag value of the first usage value, wherein the levelTag values are ordered according to the first order.