Deployment of Contents Protection Scheme using Digital Signature

With the recent progress in social media and Internet technology, it is easy for consumers to edit contents uploaded on the network and create new contents. In this situation, copyright protection related to the secondary use of uploaded content is important. In our previous works, three schemes were proposed for controlling the secondary use of content according to the author's intentions by using digital signatures. Using these schemes, an author can control the changes, deletions, additions, and diversions in each portion of his/her contents, as well as the composition of the contents. The objective of this study was to verify the practicality of this technology by mounting it. Thus, we applied this technology to contents created using "MikuMikuDance," a contents editing tool for 3D CG movies, and mounted a contents protection system. We show the manner in which this system was mounted, and describe the evaluation of the processing speed in a simulation environment.