2013 Volume 133 Issue 4 Pages 802-815
Recently we need a new copyright protection system for a UGC (User Generated Content) in CGM (Consumer Generated Media) markets, which is generally made with re-use of existing content files. In this paper, we propose a new system that enables to pre-control editing contents with a digital signature from the viewpoint of editing control. Existent sanitizable signatures, which can only delete contents, are extended, and it is feasible to set up a work of editing as alteration, deletion and insertion including permission to edit contents. Therefore a content user can edit contents within the range of creator's permission.
The transactions of the Institute of Electrical Engineers of Japan.C
The Journal of the Institute of Electrical Engineers of Japan