Verbindungsloses Lizenzübertragungs- und Verteilungssystem

摘要

An License Agent (LA), or a license chip having the same function as the License Agent, is disposed in a Personal Computer (12), a content distribution server (10), and a medium attached to a Private Device or Portable Device (14) 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 between the various devices. However, the license is distributed between the License Agents as safe communication means. Thus, the license can be correctly managed and transferred.