A providing apparatus provides information required for secure communication to first and second devices. The providing apparatus includes a receiving unit that receives a first parameter used by the first device for the secure communication and a second parameter used by the second device for the secure communication from a connection apparatus via which the first device is connected to the second device, a generating unit that generates the information required for the secure communication based on the parameters received from the connection apparatus, and a transmitting unit that transmits the information required for the secure communication, generated by the generating unit, to the first and second devices.