| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a content distribution system which allows redownloading because of line abnormality or the like without increasing the number of services for a privilege service and on the other hand, can increase the number of services about additional downloading performed by paying an additional charge for the downloading. <P>SOLUTION: The content distribution system is provided with a content distributor 11 for distributing encrypted content, a license information distributor 12 for distributing license information including a reproduction key for decryption, and a privilege service information distributor 13 for generating a service number from an order number of content, encrypting the order number together with the number of services, attaching them to the content and distributing the content. The service number information distributor is provided with a service number holding means 16 for storing the service number and the order number as a set for a prescribed period, and when the same order number is inputted again for the prescribed period, the service number constituting the set is outputted from the service number holding means, and the order number is encrypted together with the number of services. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
