Communication control method and communication device

A communication control device for controlling a vehicle exterior communication performed between a first in-vehicle electronic control unit and an outside of a vehicle, the device comprising

• at least one of (i) a circuit and (ii) a processor with a memory storing computer program code executable by the processor, the at least one of the circuit and the processor configured to cause the device to serve as:
• an information preparation unit configured to prepare connection information necessary for the vehicle exterior communication between the first in-vehicle electronic control unit and a specific connection destination on behalf of the first in-vehicle electronic control unit;
• and
• a permission setting unit configured to permit the first in-vehicle electronic control unit to perform the vehicle exterior communication limited to the specific connection destination using the connection information, wherein
• when preparing the connection information, performing setting of the first in-vehicle electronic control unit to acquire by the first in-vehicle electronic control unit, the connection information acquired by the vehicle exterior communication from an alternative server unit configured to provide the connection information to the first in-vehicle electronic control unit through a vehicle interior communication,
• the setting of the first in-vehicle electronic control unit includes setting the vehicle exterior communication of the first in-vehicle electronic control unit to only the specific connection destination,
• after the vehicle exterior communication of the first in-vehicle electronic control unit is set to only the specific connection destination, the first in-vehicle electronic control unit performs mutual communication with the specific connection destination to construct an encrypted communication path, and, in the vehicle, a second in-vehicle electronic control unit does not grasp a communication content of encryption communication via the constructed encrypted communication path, and
• the specific connection destination is a server that provides a service to a user of the vehicle, the service is provided by execution of an application communication between the first in-vehicle electronic control unit and the specific connection destination, and the communication content of the encryption communication is related to the service.