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,
• receive a tolling usage message (TUM) from the telematics controller, the TUM including information encrypted with the toll service provider public key and including a telematics controller public key,
• decrypt the information 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, for decryption by the telematics controller using a telematics controller private key corresponding to the telematics controller public key.

A method for securing toll messages comprising:

• receiving 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 a tolling usage message (TUM) via V2X communication, the TUM including information encrypted with a toll service provider public key, information encrypted with the toll charger cloud public key, and a telematics controller public key, the encrypted information including personal information (PI);
• responsive to broadcast of the TUM, receiving 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 the TRM using a telematics controller private key corresponding to the telematics controller public key.