公开(公告)号：US20220414268A1

公开(公告)日：2022-12-29

申请号：US17850497

申请日：2022-06-27

Applicant: STMICROELECTRONICS (ROUSSET) SAS

Inventor： Simon LANDRY ,  Yanis LINGE

IPC: G06F21/72

Abstract: The present disclosure relates to a method for protecting a first data item applied to a cryptographic algorithm, executed by a processor, wherein said algorithm is a per-round algorithm, with each round processing contents of first, second and third registers, the content of the second register being masked, during first parity rounds, by the content of a fourth register and the content of the third register being masked, during second parity rounds, by the content of a fifth register.

公开(公告)号：US20210286902A1

公开(公告)日：2021-09-16

申请号：US17199279

申请日：2021-03-11

Applicant: STMICROELECTRONICS (ROUSSET) SAS

Inventor： Yanis LINGE ,  Simon LANDRY

IPC: G06F21/72

Abstract: The present disclosure relates to a method of fault detection in an application, by an electronic circuit, of a first function to a message, including the steps of generating, from the message, a non-zero even number N of different first sets, each including P shares; applying, to the P shares of each first set, one or a plurality of second functions delivering, for each first set, a second set including Q images; and cumulating all the images, starting with at most Q-1 images selected from among the Q images of a same second set.