US 11,792,644 B2
Session key generation for autonomous vehicle operation
Michael Maass, Pittsburgh, PA (US); Karl Robinson, Norwell, MA (US); and Garth Scheidemantel, Gibsonia, PA (US)
Assigned to Motional AD LLC, Boston, MA (US)
Filed by Motional AD LLC, Boston, MA (US)
Filed on Jun. 21, 2021, as Appl. No. 17/353,780.
Prior Publication US 2022/0408246 A1, Dec. 22, 2022
Int. Cl. H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04L 9/06 (2006.01); H04W 8/18 (2009.01)
CPC H04W 12/041 (2021.01) [H04L 9/06 (2013.01); H04W 8/18 (2013.01); H04W 12/0431 (2021.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
generating, by a vehicle service subscriber system having at least one processor, an entropy, the vehicle service subscriber system associated with a vehicle service subscriber;
receiving, by the vehicle service subscriber system using the at least one processor, a salt message from the vehicle service provider system indicating a lack of a scheduled salt update;
responsive to receipt of the salt message, transmitting, by the vehicle service subscriber system using the at least one processor, a synchronization message to a vehicle service provider system associated with at least one vehicle, the synchronization message comprising the entropy;
receiving, by the vehicle service subscriber system using the at least one processor, a salt from the vehicle service provider system;
verifying, by the vehicle service subscriber system using the at least one processor, that the salt was generated using the entropy;
calculating, by the vehicle service subscriber system using the at least one processor, session keys using the salt;
receiving, by the vehicle service subscriber system using the at least one processor, a protected message from the vehicle service provider system; and
authenticating, by the vehicle service subscriber system using the at least one processor, the protected message using the session keys, wherein the protected message is used to provide a ride involving the at least one vehicle.