| 摘要 |
PROBLEM TO BE SOLVED: To enable a user holding a notebook PC, a portable terminal or the like used in a mobile environment to access content being located inside a house from a visited location, the inside of a train on the way to work, or the like.SOLUTION: There are provided a content transmitting apparatus 100 and content receiving apparatuses 300 and 400. When the content receiving apparatus 300 and the content transmitting apparatus 100 are located inside the same house, authentication processing is performed based on a first confirmation method so as to exchange key information. When the content receiving apparatus 400 is located outside the house, the authentication processing is performed based on a second confirmation method before transmission. The content transmitting apparatus 100 registers apparatus information of the content receiving apparatus 400 which attempts the authentication, authenticates the content receiving apparatus 400 on the basis of a third confirmation method with reference to register information, and then, transmits the key information. |
