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:
Oct. 08, 2019
Filed:
Oct. 30, 2015
Applicant:
Giesecke & Devrient Gmbh, München, DE;
Inventors:
Assignee:
GIESECKE+DEVRIENT MOBILE SECURITY GMBH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09C 1/06 (2006.01); G09C 1/00 (2006.01); H04L 9/00 (2006.01); H04L 9/06 (2006.01); G06F 9/4401 (2018.01); G06F 21/12 (2013.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
G09C 1/06 (2013.01); G06F 9/4403 (2013.01); G06F 21/12 (2013.01); G09C 1/00 (2013.01); H04L 9/002 (2013.01); H04L 9/0618 (2013.01); H04L 9/0625 (2013.01); H04L 9/0631 (2013.01); H04L 9/0822 (2013.01); H04L 2209/043 (2013.01); H04L 2209/08 (2013.01); H04L 2209/16 (2013.01);
Abstract
The invention provides a processor device having an executable, white-box-masked implementation of a cryptographic algorithm implemented thereon. The white-box masking comprises an affine mapping A, which is so designed that every bit in the output values w of the affine mapping A depends on at least one bit of the obfuscation values y, thereby attaining that the output values w of the affine mapping A are statistically balanced.