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基于代理重加密的多媒体数字版权授权协议

DOI: 10.13190/j.jbupt.2013.06.002, PP. 7-12

Keywords: 数字版权管理,代理重加密,内容共享,许可授权

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Abstract:

针对数字内容使用和共享中版权保护的问题,提出一种基于代理重加密的多媒体数字版权授权协议.该协议允许内容提供商在客户端加密多媒体内容,内容使用者获取加密的多媒体内容后向许可证服务器申请许可证,内容使用者下载许可证后向密钥代理服务器提交内容加密密钥重加密申请,密钥代理服务器重加密内容加密密钥后返回给内容使用者,而许可证服务器无法获取内容加密密钥明文.在该协议的基础上,实现了云计算环境下的数字电视节目内容共享平台.对比结果和实际运行情况表明,该协议在内容使用和共享过程中不需要重新加密内容,能有效抵抗合谋攻击,效率及安全性较高.

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