Abstract
As an organization that develops DRM (digital right management) standards in China, ChinaDRM proposed a set of solutions for the DRM application. This paper mainly focuses on the rights expression and the content authorization mechanism of ChinaDRM. We built a basic model for ChinaDRM's rights expression, introduced the format of ChinaDRM license and gave a license instance for analysis. At the end of this paper, we introduced the content authorization mechanism of ChinaDRM.