CONTENT MANAGEMENT AND UTILIZATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a content management and utilization method which has a high function of preventing unauthorized copy of a digital content and allows even a large-capacity digital content to be surely transferred.

SOLUTION: The content management and utilization method has steps of; requesting transfer by a content selection part 29; requesting authentication to an information terminal 3 by an authentication request part 18; authenticating a transfer requester by the information terminal; transferring an encrypted digital content to an information display device 2 by a content server; requesting permission of reproduction by the content selection part; requesting authentication to the information terminal by the authentication request part; authenticating a reproduction permission requester by the information terminal; transmitting a decryption key to the information display device by the content server; reproducing the encrypted digital content by the information display device; and converting the reproduced digital content to the encrypted digital content again by the information display device.

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