US 11,791,999 B2
Vehicle electronic control unit authentication
Venkata Kishore Kajuluri, Southgate, MI (US); Xin Ye, Farmington Hills, MI (US); and Bradley Warren Smith, Ann Arbor, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Feb. 18, 2021, as Appl. No. 17/178,359.
Prior Publication US 2022/0263649 A1, Aug. 18, 2022
Int. Cl. H04L 9/08 (2006.01); G07C 5/00 (2006.01); H04L 7/00 (2006.01); B60R 16/023 (2006.01); H04L 67/12 (2022.01); G07C 5/04 (2006.01)
CPC H04L 9/088 (2013.01) [B60R 16/0232 (2013.01); G07C 5/008 (2013.01); G07C 5/04 (2013.01); H04L 7/0008 (2013.01); H04L 67/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising a computer including a processor and a memory, the memory storing instructions executable by the processor to:
monitor a vehicle communication network of a vehicle to detect a plurality of electronic control units (ECUs);
upon identifying a new ECU in the plurality of ECUs, determine, from the plurality of ECUs, a highest ECU trip counter, wherein a respective ECU trip counter is stored in each ECU;
update a global trip counter stored in the memory based on the highest ECU trip counter, wherein the global trip counter indicates a number of transitions of the vehicle from an off state to an on state and the updated trip global trip counter is greater than the highest ECU trip counter; and
then provide a replacement synchronization message to the plurality of ECUs on the vehicle communication network, the replacement synchronization message including the updated global trip counter for the plurality of ECUs to update respective ECU trip counters based on the global trip counter.