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:
Apr. 29, 2025
Filed:
Sep. 06, 2022
Nuvoton Technology Corporation, Hsin-chu, TW;
Oren Tanami, Ra'anana, IL;
Nuvoton Technology Corp., Hsinchu, TW;
Abstract
A security device includes a memory and a processor. The memory is configured to store security firmware (FW), an active cryptographic key and an inactive cryptographic key. The active cryptographic key is associated with an active authentication certificate for authenticating the active cryptographic key, and the inactive cryptographic key is associated with an inactive authentication certificate for authenticating the inactive cryptographic key. The processor is configured to carry out security tasks by executing the security FW, and, provided a security-update indication is received, to (i) inactivate the active cryptographic key and the active authentication certificate, and (ii) activate the inactive cryptographic key and the inactive authentication certificate.