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:
Dec. 14, 2021
Filed:
Mar. 25, 2015
Applicant:
Stmicroelectronics (Rousset) Sas, Rousset, FR;
Inventor:
Yannick Teglia, Belcodene, FR;
Assignee:
STMICROELECTRONICS (ROUSSET) SAS, Rousset, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/55 (2013.01); G01K 13/00 (2021.01); G06F 21/57 (2013.01); G06F 21/71 (2013.01); G06F 12/14 (2006.01);
U.S. Cl.
CPC ...
G06F 21/575 (2013.01); G01K 13/00 (2013.01); G06F 12/1458 (2013.01); G06F 21/554 (2013.01); G06F 21/71 (2013.01); G06F 2212/1052 (2013.01); G06F 2221/034 (2013.01); G06F 2221/2137 (2013.01);
Abstract
A method of detecting a cold-boot attack on an integrated circuit, including the steps of: periodically sampling a signal delivered by at least one ring oscillator; and verifying that the proportion of states '1' and of states '0' of the result of the sampling is within a range of values.