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. 07, 2023
Filed:
May. 16, 2019
Lg Electronics Inc., Seoul, KR;
University of Sao Paulo, Sao Paulo, BR;
Marcos A. Simplicio, Sao Paulo, BR;
Eduardo Lopes Cominetti, Sao Paulo, BR;
Harsh Kupwade-Patil, Fremont, CA (US);
Jefferson E. Ricardini, Sao Paulo, BR;
Marcos Vinicius M. Silva, Sao Paulo, BR;
LG Electronics Inc., Seoul, KR;
UNIVERSITY OF SAO PAULO, Sao Paulo, BR;
Abstract
Embodiments described herein provide a tree-based key management protocol with enhanced computational and bandwidth efficiency. A tree structure including a plurality of nodes is formulated according to modules in a vehicle. A group key and a blinded key are computed for a leaf node from the plurality of nodes based at least in part on a multiplication operation defined in an ecliptic curve group. Or a group key and a blinded key are recursively computed for a non-leaf node based at least in part on a key derivation function and the multiplication operation involving a group key and a blinded key corresponding to nodes that is one level down to the non-leaf node.