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. 01, 2020
Filed:
Jun. 05, 2017
Secure in-band upgrade using key revocation lists and certificate-less asymmetric tertiary key pairs
Honeywell International Inc., Morris Plains, NJ (US);
Harshal S. Haridas, Jamison, PA (US);
Michal Hojsik, Prague, CZ;
Jiri Findejs, Prague, CZ;
Lukas Pohanka, Prague, CZ;
Honeywell International Inc., Morris Plains, NJ (US);
Abstract
A method includes securely booting a device using a bootloader, where the bootloader is digitally signed using a first cryptographic key associated with the bootloader. The method also includes executing one or more kernel or user applications using the device, where the one or more kernel or user applications are digitally signed using one or more second cryptographic keys associated with the one or more kernel or user applications. In addition, the method includes using an in-band channel to update or replace the first cryptographic key.