A license hub including a hub apparatus to which one or more apparatus and devices
can be electrically connected, and a safe storage device for storing therein keys
used to decode the encrypted contents data is added to the existing system to construct
a license network. A controller of the license network acquires the information
of various kinds of apparatuses and devices which are electrically connected to
the license hub, and determines automatically the apparatus and/or the device suitable
for executing the processing when carrying out the playback of contents or movement
of the key to execute these processings.