Research on Digital Contents Lifecycle Protection - Whole Lifecycle Protection

In this paper, we put forward the Content Lifecycle Protection(CLP) concept, structure and implementation, which mainly employ `Box´ to wrap content into BCO so that Box can supervise and protect inside content during each phase of lifecycle. By analyzing the elements in BCO, the core in CLP, we present BCO logical structure, physical structure and physical coupling structures respectively. The physical coupling structure forms can be appropriately decided by the content application areas. At the end of this paper, the application experiment is implemented and three key services based on PKC, explaining how the BCO works, are described in detail.