Jason E Haas

US Patent:

20090259841, Oct 15, 2009

Filed:

Apr 11, 2008

Appl. No.:

12/082454

Inventors:

Kenneth P. Laberteaux - Ann Arbor MI, US
Yih-Chun Hu - Urbana IL, US
Jason Haas - Urbana IL, US

Assignee:

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY
The Board of Trustees, University of Illinois at Urbana-Champaign - Champaign IL

International Classification:

G06F 21/00
H04L 9/06

US Classification:

713156

Abstract:

In a vehicle-to-vehicle communication network utilizing PKI security methods to protect communications and in which the PKI encryption utilizes a Certificate Authority having both a private key and a publicly distributed key, a method for allocating multiple certificates for each vehicle which are assigned to each vehicle in the communication network. The method includes the step of assigning a unique secret key k to each vehicle in the communication network. The Certificate Authority then creates a plurality of public key and private key encryption pairs for each vehicle and each encryption pair is associated with an index i. A plurality of certificates are then created with one certificate for each value of the index. A revocation list comprising the secret keys is maintained by the Certificate Authority so that all encryption pairs assigned to a particular vehicle may be revoked by the secret key k corresponding to that vehicle.

US Patent:

20090260057, Oct 15, 2009

Filed:

Apr 11, 2008

Appl. No.:

12/082589

Inventors:

Kenneth P. Laberteaux - Ann Arbor MI, US
Yih-Chun Hu - Urbana IL, US
Jason Haas - Urbana IL, US

Assignee:

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY
The Board of Trustees, The University of Illinois at Urbana-Champaign - Champaign IL

International Classification:

G06F 21/00

US Classification:

726 2

Abstract:

In a vehicle-to-vehicle wireless communication system utilizing certificates to verify trustworthiness of received communications, a method for distributing a list of certificate revocations to vehicles in the communication system. At least one main station transmits a list of certificate revocations to at least one vehicle and the vehicle thereafter transmits the list of certificate revocations to other vehicles in the communication network. Each of the other vehicles in the communication network updates its list of certificate revocations in response to the receipt of the list of certificate revocations from another vehicle in the system. The other vehicles thereafter transmit their updated list of certificate revocations to other vehicles in the system.