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:
Feb. 04, 2014
Filed:
Oct. 04, 2011
Vineet Dujari, Fremont, CA (US);
Tze Lei Poo, Sunnyvale, CA (US);
Vineet Dujari, Fremont, CA (US);
Tze Lei Poo, Sunnyvale, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
The present disclosure describes apparatuses and techniques for fail-safe key zeroization. In some aspects a periodic counter is activated that is configured to indicate an amount of time that content of a one-time-programmable (OTP) memory is accessible and overwriting of the content of the OTP is caused when the periodic counter reaches a predetermined value effective to zeroize the content. In other aspects a periodic counter is started in response to a power event and one or more encryption keys stored in OTP memory are zeroized if an indication of media drive security is not received within a predetermined amount of time.