Novel DRM model for copyright tracking
一种新的DRM权限跟踪模型*

The interoperability was improved by the proposed identity-based DRM model,that was,the content could be played on different device by the authorized user.Encrypted a part of content by content server,embedded meanwhile the watermarking on the rest of content.The model reduced the computational complexity on basis of security.The watermarking had the dual functions: first,it meant that the content was protected,second,according to it,the license server provided corresponding license.Digital watermarking is ...