Fujitsu Corporation

Tetsuhiro Chiba

Hidefumi Maruyama

Takayuki Hasebe

Takahisa Hatakeyama

Yuuki Hachiya

An encrypted content and a license are separated from each other to be distributed individually, so that the encrypted content is decrypted using the license in a user apparatus. A server encrypts licenses of a plurality of encrypted contents for package sale to generate an inactive license packaged in one file and distribute the inactive license to a user terminal utilizing an activation license for package sale. An activation license for package sale is distributed in response to a purchase request from the user terminal, a plurality of encrypted licenses contained in the inactive license are decrypted, an encrypted content contained in an object for package sale is decrypted using a license corresponding thereto so that the decrypted content is reproduced.

Content distribution program, content distribution method, server, content utilization apparatus, and content utilization system

An LA (License Agent) (or a license chip having the same function as the LA) is disposed in a PC (Personal Computer), a content distribution server, and a medium attached to a PD (Private Device or Portable Device) that use a license for electronic data. A content and electronic data are encrypted corresponding to a license. The encrypted content and electronic data are distributed among them. However, the license is distributed between the LAs as safe communication means. Thus, the license can be correctly managed and transferred.

Growing community of inventors

Kawasaki, Japan

Tetsuhiro Chiba