This paper describes a new usage control system based on copyright, which enables every content on the Internet to be set copyright policy for it and the content to be treated in accordance with the policy. Copyright policy is described in intermediate format which we defined, so that it is interpreted by programs and translated to any language. This policy is managed by copyright server, which uses a protocol designed for copyright policy transaction. This policy is also protected from tampering by digital signature.
Unauthorized use is prevented by distributing content with encryption.
We implemented an experimental prototype of this system and evaluate it on a distance learning system on the Internet. This result proves that this system is feasible as a usage control system on the Internet. Implementation Evaluation Conclusion Reference 1. Introduction Copyright management is a most important issue in distributing digital contents over the Internet today. To meet such demand, this paper proposes a practical usage control system based on copyright.