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:
Jul. 16, 2013
Filed:
Mar. 10, 2011
Applicant:
Elena Trichina, Aix-en-Provence, FR;
Inventor:
Elena Trichina, Aix-en-Provence, FR;
Assignee:
STMicroelectronics (Rousset) SAS, Rousset, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of detecting a fault attack during a cryptographic operation using at least one look-up table including a plurality of sub-tables each having a same number of values of a fixed bit length, a fixed relation existing between values at same locations in each sub-table, the method including: performing a load operation to retrieve from the look-up table data values from a same location in each sub-table; verifying that the fixed relation exists between at least two of the data values; and generating an output signal based on the verification.