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. 19, 2019
Filed:
Jul. 31, 2015
Applicant:
Nxp B.v., Eindhoven, NL;
Inventors:
Jan Hoogerbrugge, Eindhoven, NL;
Wil Michiels, Eindhoven, NL;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/14 (2013.01); G06F 7/72 (2006.01); H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
G06F 21/14 (2013.01); G06F 7/723 (2013.01); H04L 9/002 (2013.01); H04L 2209/16 (2013.01);
Abstract
A method of obscuring software code implementing a modular exponentiation function, including: receiving modular exponentiation parameters including an exponent e having N bits; generating a bitwise exponent array and inverse bitwise exponent array; and generating modular exponentiation function operations using the bitwise exponent array, inverse bitwise exponent array, and N, wherein the generated modular exponentiation function operations are split variable operations.