MP3 audio playback control system using license and watermark

摘要

In this paper, we designed and implemented the MP3 playback control system so that the encryption and watermarking tools from different vendors for the content protection could be used with interoperability. In this system, we afforded multi-control point throughout the procedure of content playback process in order to make multi layered content protection possible. Also we adopted the license concept to apply various usage rules and allowed end users to redistribute content by managing content and license independently.