A storage medium is inserted in a storage-medium drive unit in a removable manner, storing information including setting information on a target program, identification information for identifying the storage medium, and electronic signature information generated from the setting information and the identification information. A launching unit performs an authentication of the setting information using the identification information and the electronic signature information read by a reading unit, and when the authentication is successful, reads the target program from a storage unit and launches the target program according to the setting information.