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:
Nov. 25, 2014
Filed:
Nov. 12, 2007
Sylvain Prevost, Austin, TX (US);
Ksheerabdhi Krishna, Cedar Park, TX (US);
Ruchirkumar D Shah, San Jose, CA (US);
Mehdi Asnaashari, Danville, CA (US);
Sylvain Prevost, Austin, TX (US);
Ksheerabdhi Krishna, Cedar Park, TX (US);
Ruchirkumar D Shah, San Jose, CA (US);
Mehdi Asnaashari, Danville, CA (US);
Gemalto Inc., Austin, TX (US);
Abstract
A system and method of operating a device to securely update the control firmware controlling the device. Downloading a firmware update package to a first microcontroller of the device. Determining a firmware update portion and an encrypted hash portion of the firmware update package wherein the encrypted hash portion is cryptographically signed by a signatory. Confirm that the encrypted hash portion conforms to the firmware update by independently computing the hash of the encrypted firmware update portion on the first microcontroller and comparing that value to the signed hash. Other systems and methods are disclosed.