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. 29, 2026
Filed:
Nov. 04, 2022
Stmicroelectronics (Rousset) Sas, Rousset, FR;
Thomas Sarno, Fuveau, FR;
STMICROELECTRONICS (ROUSSET) SAS, Rousset, FR;
Abstract
A device includes a memory, which, in operation, stores one or more look-up tables, and cryptographic circuitry coupled to the memory. The cryptographic circuitry, in operation, multiplies first data masked with a first mask by second data masked with a second mask, and protects the first data and the second data during the multiplying. The multiplying and protecting includes remasking the first data with a third mask, remasking the second data with a fourth mask, executing one or more compensation operations using one or more of the one or more look-up tables, and generating third data masked with a fifth mask. The fifth mask is independent of the first, second, third, and fourth masks. The third data corresponds to the first data multiplied by the second data.