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. 04, 2018
Filed:
Jul. 31, 2015
Applicant:
Nxp B.v., Eindhoven, NL;
Inventors:
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); G06F 21/14 (2013.01); G06F 21/60 (2013.01); H04L 9/30 (2006.01); G06F 21/50 (2013.01);
U.S. Cl.
CPC ...
G06F 21/14 (2013.01); G06F 21/50 (2013.01); G06F 21/602 (2013.01); H04L 9/3066 (2013.01); G06F 2221/0748 (2013.01);
Abstract
A method of obscuring software code implementing an elliptic curve cryptography (ECC) point multiplication function, including: receiving ECC parameters including a multiplier d having N bits; transforming multiplier d into an array d(i) with −1, 0, and +1 values while maintaining the same value for d; and generating ECC point multiplication function operations using the transformed multiplier array d(i) and N, wherein the generated ECC point multiplication function operations are split variable operations.