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:
Jul. 26, 2016
Filed:
Jul. 31, 2014
Applicant:
Fairchild Semiconductor Corporation, San Jose, CA (US);
Inventor:
Robert A. Card, Scarborough, ME (US);
Assignee:
FAIRCHILD SEMICONDUCTOR CORPORATION, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/22 (2006.01); G06F 12/14 (2006.01); H04L 9/00 (2006.01); G09C 1/00 (2006.01);
U.S. Cl.
CPC ...
H04L 9/003 (2013.01); G09C 1/00 (2013.01); H04L 2209/08 (2013.01); H04L 2209/12 (2013.01);
Abstract
Apparatus and methods are provided for defending an electronic circuit secret algorithm and secret parameter values against a side-attack. In an example, a method can include receiving first one or more parameters for altering a clock signal of the electronic device at a non-volatile memory register, and altering a frequency of the clock signal of the electronic device during execution of an authentication routine according to the first one or more parameters.