| 摘要 |
PROBLEM TO BE SOLVED: To provide a content distribution system, a method therefor, a server, a user terminal, an encryption apparatus, a managing apparatus, and a streaming apparatus which enable a user to obtain contents inexpensively by charging according to viewing and listening time only and enables only a fee required for obtaining cryptographic key information to be enough for a communication fee. SOLUTION: A content management server apparatus 400 transmits content information encrypted by an encryption processing part of the contents encryption apparatus 300 to the user terminal 100 via a communication network 600, whereas a streaming server apparatus 500 transmits streamed cryptographic key information via a portable telephone communication network 650 and a charge processing part calculates the fees on the basis of the transmission situations. COPYRIGHT: (C)2005,JPO&NCIPI
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