| 一种基于分组访问控制的数字电视条件接收密钥分配算法 |
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| 引用本文： | 刘宝锋,李绿萍,张文军,郑世宝. 一种基于分组访问控制的数字电视条件接收密钥分配算法[J]. 上海交通大学学报, 2006, 40(5): 730-733,738 |
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| 作者姓名： | 刘宝锋 李绿萍 张文军 郑世宝 |
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| 作者单位： | 上海交通大学,图像通信与信息处理研究所,上海,200240;上海卫星工程研究所,上海,200240 |
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| 基金项目： | 信息产业部电子发展基金 |
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| 摘 要： | 在4级密钥分配机制的基础上,提出了一种基于分组访问控制的4级密钥分配算法.该算法在获得较高效率和安全性的同时,大大降低了加密的计算量和复杂度,而且能够灵活处理用户的加入与离开,使得运营商能够很方便地动态管理收视用户.通过分析和比较算法的安全性和性能表明,所提出算法非常适合于实际应用.
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| 关 键 词： | 条件接收系统 数字电视 分级和分组 密钥分配 |
| 文章编号： | 1006-2467（2006）05-0730-04 |
| 收稿时间： | 2005-04-19 |
| 修稿时间： | 2005-04-19 |
A Key Distribution Based on Grouping Access Control Scheme for Conditional Access System in Digital TV Broadcasting |
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| LIU Bao-feng,LI Lü-ping,ZHANG Wen-jun,ZHENG Shi-bao. A Key Distribution Based on Grouping Access Control Scheme for Conditional Access System in Digital TV Broadcasting[J]. Journal of Shanghai Jiaotong University, 2006, 40(5): 730-733,738 |
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| Authors: | LIU Bao-feng LI Lü-ping ZHANG Wen-jun ZHENG Shi-bao |
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| Abstract: | Based on four-level key hierarchy,a new key distribution scheme based on grouping access control for conditional access system in digital TV(DTV) broadcasting was presented.The key distribution scheme can greatly reduce computation load and complexity while providing higher security.Moreover,the proposed scheme is flexible in processing joining and leaving of subscriber,which makes service provider easy to manage the subscribers dynamically.In the end,the security and performance of the proposed scheme were analyzed and compared with other schemes.It shows that the proposed scheme is very feasible for practical applications. |
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| Keywords: | conditional access system digital TV(DTV) grouping and hierarchy key distribution |
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