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:
May. 09, 2017
Filed:
Oct. 03, 2014
Applicants:
Olivier Chamley, Colombes, FR;
Christophe Giraud, Colombes, FR;
Inventors:
Olivier Chamley, Colombes, FR;
Christophe Giraud, Colombes, FR;
Assignee:
OBERTHUR TECHNOLOGIES, Colombes, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/83 (2013.01); G09C 1/00 (2006.01); G06F 21/60 (2013.01); G06F 21/79 (2013.01); H04L 9/06 (2006.01);
U.S. Cl.
CPC ...
G09C 1/00 (2013.01); G06F 21/602 (2013.01); G06F 21/79 (2013.01); H04L 9/0631 (2013.01);
Abstract
Devices and methods for masking and unmasking sensitive data, based on a standard cryptographic algorithm defining a ciphering algorithm, and a deciphering algorithm using more resources than the ciphering algorithm are described. The masking of sensitive data is done by applying the deciphering algorithm to the sensitive data to obtain masked sensitive data. The unmasking of the masked sensitive data is done by applying the ciphering algorithm to the masked sensitive data to obtain sensitive data in plain form.