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:
Mar. 26, 2019
Filed:
Jul. 14, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
Andrew Naegle, Lake Orion, MI (US);
Karl B. Leboeuf, Lasalle, CA;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system and method of establishing a secure time value in a connected device. The method includes: receiving a hash of a pinset at the connected device from each independent time server in a federation, wherein the pinset is stored at the connected device as well as at the independent time servers remotely located from the connected device; receiving at the connected device a time value along with each hash of the pinset; attempting to verify the hashes of the pinset received from each of the plurality of independent time servers at the connected device; and determining at the connected device which time values received from the plurality of independent time servers are valid based on validity of the hashes.