Patent ID: 11950091
Assignee: TRANSPORTATION IP HOLDINGS, LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A system comprising:
an onboard communication system configured to be disposed onboard a vehicle system and comprising one or more processors, the one or more processors configured to:
generate a session key that includes a shared secret key that is known by the onboard communication system and an off-board communication system disposed off-board of the vehicle system;
generate one or more encryption keys by hashing the session key with an identifier responsive to the vehicle system completing a cycle time, the identifier being based on the cycle time, wherein the cycle time is based on a predetermined characteristic of one or more of a time or location of the vehicle system, wherein the cycle time is known by the onboard communication system and the off-board communication system;
generate one or more encrypted messages by encrypting one or more messages associated with one or more of the vehicle system or a route over which the vehicle system is configured to move based on the one or more encryption keys; and
communicate the one or more encrypted messages from the onboard communication system to the off-board communication system.