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:
Feb. 22, 2022
Filed:
Aug. 13, 2018
Applicant:
Taiwan Semiconductor Manufacturing Company Ltd., Hsinchu, TW;
Inventors:
Shih-Lien Linus Lu, Hsinchu, TW;
Cormac Michael O'Connell, Ontario, CA;
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD., Hsinchu, TW;
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 9/08 (2006.01); G06F 12/02 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0866 (2013.01); G06F 12/0292 (2013.01); H04L 9/3278 (2013.01); H04L 2209/12 (2013.01);
Abstract
A method for utilizing a plurality of physical unclonable function (PUF) cells to generate a signature key with a desired bit length is provided. The method includes setting a state of each of the plurality of PUF cells to a uniform level; obtaining an order of change in the state of at least a portion of the plurality of PUF cells; and generating the signature key at least based on the order.