US 12,114,155 B2
Method and apparatus for non-linear authentication of vehicle communications
Suresh Munagapati, Cumming, GA (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on May 23, 2022, as Appl. No. 17/750,510.
Prior Publication US 2023/0413043 A1, Dec. 21, 2023
Int. Cl. H04W 12/06 (2021.01); H04L 9/40 (2022.01); H04W 4/40 (2018.01); H04W 12/041 (2021.01)
CPC H04W 12/06 (2013.01) [H04L 63/068 (2013.01); H04W 4/40 (2018.02); H04W 12/041 (2021.01)] 18 Claims
OG exemplary drawing
 
1. A system for authenticating communications from a vehicle to a remote assistance unit, the system comprising:
a connectivity module (CM) installed in the vehicle;
a security device adapted to transmit messages when the security device is within a predefined proximity of the CM;
a security cloud unit configured to validate the security device based in part on a first pair of complementary keys, including a first factory key stored by the security device and a second factory key stored by the security cloud unit;
wherein the first pair of complementary keys is configured for asymmetric encryption such that the first factory key is solely decryptable with the second factory key;
wherein the remote assistance unit is configured to authenticate an integrity of the CM based in part on a second pair of complementary keys dynamically generated by the security cloud unit, the second pair of complementary keys being dynamically generated by the security cloud unit with a predefined expiration time; and
wherein the second pair of complementary keys is not stored, thereby eliminating a fixed repository of credentials.