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:
Sep. 06, 2016
Filed:
May. 06, 2011
Applicants:
Bruce B. Pedersen, Sunnyvale, CA (US);
Ninh D. Ngo, Palo Alto, CA (US);
Inventors:
Bruce B. Pedersen, Sunnyvale, CA (US);
Ninh D. Ngo, Palo Alto, CA (US);
Assignee:
Altera Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04L 29/06 (2006.01); H04L 9/14 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0861 (2013.01); H04L 63/0478 (2013.01); H04L 9/14 (2013.01);
Abstract
Systems and methods relating to generating a key that is difficult to clone are described. The methods include receiving a programmable logic device (PLD) with a first key and applying a one-way hash function to a second key or the first key and the second key to create a third key. The application of the one-way hash function is performed using one or more components hardwired into the PLD. The methods further include storing the third key in the PLD only after using the one or more components to apply the one-way hash function.