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:
Jun. 22, 2010
Filed:
Apr. 03, 2003
Applicants:
Marc Joye, Saint Zacharie, FR;
Benoit Chevallier-mames, Aubagne, FR;
Inventors:
Marc Joye, Saint Zacharie, FR;
Benoit Chevallier-Mames, Aubagne, FR;
Assignee:
Gemalto SA, Meudon, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/28 (2006.01); H04K 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a cryptographic method secured against a covert channel attack. According to the invention, in order to carry out a selected block of instructions as a function of an input variable amongst N predefined instruction blocks, a common block is carried out on the predefined N instruction blocks, a predefined number of times, the predefined number being associated with the selected instruction block.