| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reproduction apparatus which surely acquires and reproduces high-image-quality and long-time contents while keeping security. <P>SOLUTION: The reproduction apparatus includes: a communication unit 111 for receiving the distribution of contents from a server device T via a network; a decoding unit 144; a reproduction unit 123; and a control unit 130 to which distribution information 22, 23 indicating which of a plurality of module parts in a plurality of server parts supplies each of divided contents, a plurality of decryption keys 24 corresponding to module parts of server parts and a plurality of divided contents 21 encrypted by the plurality of decryption keys are distributed from the server device T via the communication unit when encrypting and distributing the divided contents of the contents from the plurality of modules that the plurality of servers S1-Sn owned in the server device T have, and which performs control to decode and reproduce the plurality of divided contents using the decoding unit, based on the distribution information and the plurality of decryption keys. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
