US 11,798,326 B2
Systems and methods for accessing protected vehicle activity data
Masashi Nakagawa, Sunnyvale, CA (US)
Assigned to TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on May 19, 2021, as Appl. No. 17/324,925.
Prior Publication US 2022/0375283 A1, Nov. 24, 2022
Int. Cl. G07C 5/08 (2006.01); G07C 9/00 (2020.01)
CPC G07C 5/0841 (2013.01) [G07C 5/0808 (2013.01); G07C 9/00309 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for accessing protected activity data of a vehicle comprising:
a vehicle key configured to be managed by a manufacturer of the vehicle;
a user key configured to be managed by a user of the vehicle and decrypt the vehicle activity data when used in conjunction with the vehicle key; and
an electronic control unit (ECU) configured to generate a digest data from the vehicle activity data, the digest data used in detecting unauthorized modification of the vehicle activity data by the manufacturer, the user, or a third-party, and the digest data including a protected user digest accessible by the user and a protected manufacturer digest accessible by the manufacturer.