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:
Jan. 03, 2023
Filed:
Jun. 18, 2019
Applicant:
Secure-ic Sas, Cesson-Sevigne, FR;
Inventors:
Sylvain Guilley, Paris, FR;
Michel Le Rolland, Ploermel, FR;
Assignee:
SECURE-IC SAS, Cesson Sevigne, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2022.01); G06F 11/10 (2006.01); G06F 21/75 (2013.01); G06F 21/77 (2013.01);
U.S. Cl.
CPC ...
H04L 9/004 (2013.01); G06F 11/1044 (2013.01); G06F 21/75 (2013.01); G06F 21/77 (2013.01); G06F 2221/2135 (2013.01);
Abstract
Countermeasures against fault injection attacks of a cryptographic integrated circuit, and more specifically laser fault injection attacks are provided. The invention consists in generating sequences of bits belonging to a set of allowed sequences, and storing these sequences on a set of Flip-Flops. Then the sequences stored on the Flip-Flops are checked and, if they do not belong to the allowed sequence, this is the sign that a fault injection attack occurred and caused a bit flip in one of the flip-flops. An alarm signal is then generated.