An Efficient Hierarchical Rights Authorization Scheme for Offline Content Protection
Digital Rights Management (DRM) technology aims to distribute digital contents to users in a controlled manner that can protect the copyright of contents.Most previous DRM schemes do not consider user relations and content relations, thus it results in inefficiency and produces much overhead In this paper, an efficient hierarchical rights authorization scheme for airline content protection (HRAS) is proposed in distance education system of university/college. Based on certain hierarchical rights relations of users and course contents in distance education system, a logical key graph is constructed in HRAS and two algorithms are designed respectively to construct the key graph. A comparison with other DRM schemes has shown that HRAS is efficient and has low overhead.
OUYANG Qian GAO Qiang LIU Yi-guang HUANG Zhao-ting
School of Electronics and Information Engineering,Beihang University,Beijing,00191,China School of Electronics and Information Engineering,Beihang University,Beijing,100191,China Administration Centre of Digital Film Content,the State of Administration of Radio Film and Televisi
国际会议
厦门
英文
97-102
2008-12-12（万方平台首次上网日期，不代表论文的发表时间）