| 摘要 |
A contents distribution system and a method thereof, a server, a user terminal, an encryption device, a managing device, and a streaming device for enabling contents to be acquired inexpensively by performing charging in accordance with viewing time only, and also a communication charge to be limited only to a charge for acquiring encryption key information. A contents management server transmits contents information encrypted by an encryption processing section of a contents encryption device to a user terminal via a communication network, and a streaming server device transmits an encryption key information made into a stream via a portable telephone communication network so as to enable a charging processing section to calculate a charge based on the state of the transmission.
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