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:
Jan. 03, 2012
Filed:
Mar. 13, 2008
Bhargav Ramchandra Bellur, Karnataka, IN;
Anitha Varghese, Kerala, IN;
Rajeev Shorey, New Delhi, IN;
Srinivasan Rajavelu, Tamilnadu, IN;
Aditya R. Karnik, Karnataka, IN;
Bhargav Ramchandra Bellur, Karnataka, IN;
Anitha Varghese, Kerala, IN;
Rajeev Shorey, New Delhi, IN;
Srinivasan Rajavelu, Tamilnadu, IN;
Aditya R. Karnik, Karnataka, IN;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system and method for assigning certificates and reducing the size of the certificate revocation lists in a PKI based architecture for a vehicle wireless communications system that includes separating a country, or other area, into geographic regions and assigning region-specific certificates to the vehicles. Therefore, a vehicle need only process certificates and certificate revocation lists for the particular region that it is traveling in. Vehicles can be assigned multiple certificates corresponding to more than one region in the vehicles vicinity as advance preparation for possible travel or transmission into nearby regions. Further, the expiration time of certificates assigned to vehicles corresponding to a given geographic region can be tailored to be inversely proportional to the distance from a registered home region of the vehicle. A scalable design for a back-end certifying authority with region-based certificates can also be provided.