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. 30, 2014
Filed:
Apr. 22, 2013
Applicant:
Gemalto SA, Meudon, FR;
Inventors:
Assignee:
Gemalto SA, Meudon, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); H04L 9/00 (2006.01); G06F 11/10 (2006.01); G06F 21/55 (2013.01); H04L 9/32 (2006.01); G06F 21/52 (2013.01); H04L 29/06 (2006.01); G06F 21/50 (2013.01);
U.S. Cl.
CPC ...
G06F 21/52 (2013.01); H04L 9/003 (2013.01); G06F 11/1004 (2013.01); G06F 21/556 (2013.01); H04L 9/3249 (2013.01); H04L 2209/34 (2013.01); H04L 63/123 (2013.01); H04L 9/3234 (2013.01); G06F 21/50 (2013.01); H04L 2209/20 (2013.01);
Abstract
The invention relates to a method for protecting a sensitive operation by checking the integrity of at least a subset of the data manipulated by the sensitive operation. Data to be checked are divided into blocks, an intermediate integrity check value being computed for each block, the intermediate integrity check values being computed in random order. The invention also relates to a cryptographic device wherein at least one sensitive operation of the cryptographic device is protected by a method according to the invention.