公开(公告)号：US20210117532A1

公开(公告)日：2021-04-22

申请号：US17071094

申请日：2020-10-15

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Olivier Giaume

IPC: G06F21/44

Abstract: An embodiment device comprises a first processing unit configured to process an initial data line and deliver a first processed data line, a first delay unit coupled to the output of the first processing unit and configured to deliver a delayed first processed data line delayed by a first delay, a second delay unit configured to deliver the delayed initial data line delayed by a second delay, a second processing unit coupled to the output of the second delay unit and configured to process the delayed initial data line and deliver a delayed second processed data line, and a comparison unit configured to compare the contents of the delayed first and second processed data lines and deliver a non-authentication signal if the contents are not identical, the first and second delays being equal to a variable value.

公开(公告)号：US11663314B2

公开(公告)日：2023-05-30

申请号：US17071094

申请日：2020-10-15

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Olivier Giaume

IPC: G06F21/00 ,  G06F21/44

CPC classification number: G06F21/44

Abstract: An embodiment device comprises a first processing unit configured to process an initial data line and deliver a first processed data line, a first delay unit coupled to the output of the first processing unit and configured to deliver a delayed first processed data line delayed by a first delay, a second delay unit configured to deliver the delayed initial data line delayed by a second delay, a second processing unit coupled to the output of the second delay unit and configured to process the delayed initial data line and deliver a delayed second processed data line, and a comparison unit configured to compare the contents of the delayed first and second processed data lines and deliver a non-authentication signal if the contents are not identical, the first and second delays being equal to a variable value.