Secure personal information exchange over C-V2X

A system for securing toll messages, comprising:

• a toll service provider, programmed to:
• provide a toll service provider public key to a telematics controller of a vehicle;
• receive a telematics controller public key from the telematics controller operating as a toll service user, the toll service user being a customer of the toll service provider, the customer being liable for a toll;
• receive a tolling usage message (TUM) from the telematics controller, the TUM including personal information (PI) of the toll service user encrypted with the toll service provider public key and including the telematics controller public key, the PI including account information of the customer to pay the toll, the account information of the PI being secured by the encryption using the toll service provider public key;
• decrypt the personal information (PI) of the toll service user using a toll service provider private key corresponding to the toll service provider public key;
• and
• send a toll receipt message (TRM) to the telematics controller, the TRM including information encrypted using the telematics controller public key, the telematics controller being configured to decrypt the information encrypted using the telematics controller public key using a telematics controller private key corresponding to the telematics controller public key.

A method for securing toll messages comprising:

• receiving, by a telematics controller operating as a toll service user, the toll service user being a customer of a toll service provider, the customer being liable for a toll, a toll advertisement message (TAM) broadcast from a roadside unit of a roadway via vehicle-to-everything (V2X) communication, the TAM including a toll charger cloud public key;
• responsive to receipt of the TAM, broadcasting, from the telematics controller, a tolling usage message (TUM) via V2X communication, the TUM including personal information (PI) of the toll service user encrypted with a toll service provider public key, other information than the PI with respect to the toll service user encrypted with the toll charger cloud public key, and a telematics controller public key, the encrypted information including personal information (PI), the PI including account information of the customer to pay the toll, the account information of the PI being secured by the encryption using the toll service provider public key;
• responsive to broadcast of the TUM, receiving, by the telematics controller, a toll receipt message (TRM) broadcast from the roadside unit via V2X communication, the TRM being encrypted with the telematics controller public key;
• and
• decrypting, by the telematics controller, the TRM using a telematics controller private key corresponding to the telematics controller public key.