An example apparatus can include a processor and an external communication component. The external communication component can be coupled to the processor and can be configured to, in response to determining a vehicular entity is within a particular proximity to the external communication component, generate an external private key and an external public key. The external communication component can further provide the external public key and data to a vehicular communication component associated with the vehicular entity. The external communication component can further receive data from the vehicular communication component in response to providing the external public key and data to the vehicular communication component. The external communication component can further decrypt the received data using the external private key, and provide a service to the vehicular entity based on the decrypted received data.