公开(公告)号：US20240202273A1

公开(公告)日：2024-06-20

申请号：US18066862

申请日：2022-12-15

Applicant: NXP B.V.

Inventor： Björn FAY ,  Tobias SCHNEIDER ,  Joost Roland Renes ,  Melissa Azouaoui ,  Joppe Willem Bos

IPC: G06F17/10 ,  G06F7/48

CPC classification number: G06F17/10 ,  G06F7/4812

Abstract: Various embodiments relate to a fault detection system and method for polynomial operations, including: selecting a plurality of evaluation points; evaluating a first polynomial at the plurality of evaluation points to produce first results; applying a first function to the first polynomial to produce a second polynomial; evaluating the second polynomial at the plurality of evaluation points second results; evaluating a second scalar function on the first results to produce third results; comparing the second results to the third results; and performing a polynomial operation using the second polynomial when the second results match the third results.

公开(公告)号：US20240111624A1

公开(公告)日：2024-04-04

申请号：US17937138

申请日：2022-09-30

Applicant: NXP B.V.

Inventor： Björn FAY

IPC: G06F11/10 ,  G06F21/56

CPC classification number: G06F11/1044 ,  G06F21/566 ,  G06F2221/034

Abstract: Various embodiments relate to a memory controller configured to read data from a memory array, including: an error correction codes (ECC) encoder configured to encode data stored in the memory array; an ECC decoder configured to decode first data read from the memory array based upon a first read request and detect errors in the first data read from the memory array; and a fault controller configured to: command the memory controller to read other data from the memory array when the ECC detects an error; command the memory controller to re-read the first data from the memory array; when the ECC detects an error; compare the re-read first data to the read first data; and signal a fault attack when the re-read first data is different from the read first data.