| SDDRM:基于分段的电子文档动态版权管理 |
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| 引用本文： | 许东阳,汤帜,俞银燕.SDDRM:基于分段的电子文档动态版权管理[J].北京大学学报(自然科学版),2012,48(4):565-573. |
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| 作者姓名： | 许东阳 汤帜 俞银燕 |
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| 作者单位： | 北京大学计算机科学技术研究所,北京,100871 |
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| 基金项目： | 国家新闻出版重大科技工程数字版权保护技术研发工程项目(GXTC-CZ-1015004/02)资助 |
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| 摘 要： | 结合新一代文档格式CEBX,提出一种电子文档动态版权管理方案SDDRM。基于等级密钥管理方法,以段为单位,对电子文档进行加密、授权以及授权的追加、更新与合并。SDDRM包括文档加密封装、文档请求与下载、License请求与下载使用等协议,能够根据客户需求提供按需授权的功能,实现所见即所买的阅读体验。通过对SDDRM的进一步分析,表明SDDRM能提供用户个性化的访问控制,兼顾授权的灵活性和安全性。SDDRM能够实现对数字内容的精细化保护,满足数字出版新型业务发展的需要。
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| 关 键 词： | 数字版权保护 细粒度授权 授权管理 等级密钥 |
SDDRM: Toward Segment-Based Dynamic Digital Rights Management in Document Protection |
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| XU Dongyang,TANG Zhi,YU Yinyan.SDDRM: Toward Segment-Based Dynamic Digital Rights Management in Document Protection[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2012,48(4):565-573. |
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| Authors: | XU Dongyang TANG Zhi YU Yinyan |
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| Institution: | Institute of Computer Science and Technology,Peking University,Beijing 100871 |
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| Abstract: | With the properties of a new document format CEBX,a segment-based dynamic digital rights management scheme(SDDRM) is proposed to provide document encryption with hierarchical key management and fine-grained rights management which includes authorization adding,authorization update,and authorization aggregation.SDDRM includes a document encryption and packaging protocol,a document request and download protocol and a license request and download protocol.SDDRM can implement "authorization on-demand" and support the reading experience of what you see is what you buy.Further study shows that SDDRM is flexible,secure and provides personalized access control.The proposed scheme maintains the fine-grained protection of an e-document and meets the needs of new business model in digital publishing industry. |
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| Keywords: | DRM fine-grained authorization authorization management hierarchical key management |
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