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:
Mar. 25, 2014
Filed:
Mar. 27, 2006
Applicants:
Arnaud Boscher, Puteaux, FR;
Christophe Giraud, Pessac, FR;
Robert Naciri, Chatenay Malabry, FR;
Inventors:
Assignee:
Oberthur Technologies, Colombes, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A data processing method, whereby an element is subjected to a first operation with a given operand. The method includes a step of updating by a second operation a first variable (B; a; S', S′) or a second variable (A; a; S, S), depending on whether a corresponding bit of the operand=0 or 1; and a step of testing a relationship between a first value (B; a; S′) derived from the first variable and a second value (A; a; S) derived from the second variable. A related device is also disclosed.