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:
Nov. 14, 2017
Filed:
Dec. 19, 2014
Applicant:
Nxp B.v., Eindhoven, NL;
Inventors:
Wil Michiels, Reusel, NL;
Jan Hoogerbrugge, Helmond, NL;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/08 (2006.01); H04L 9/06 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0838 (2013.01); H04L 9/06 (2013.01); H04L 2209/16 (2013.01); H04L 2209/24 (2013.01);
Abstract
A method of implementing a cryptographic operation using a substitution box, comprising: specifying a set of self-equivalent functions for the substitution box; determining the minimum diversification number of the substitution box over the set of self-equivalent functions; comparing the minimum diversification number to a threshold value; including and implementing a cryptographic operation with selected substitution box when the minimum diversification number is greater or equal to a threshold value.