Efficient Methods for Integrating Traceability and Broadcast Encryption
Efficient Methods for Integrating Traceability and Broadcast Encryption
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DOI：
10.1007/3-540-48405-1_24
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发表时间：
1999-08
期刊：
影响因子：
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通讯作者：
E. Gafni;J. Staddon;Y. Yin
中科院分区：
文献类型：
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作者：
E. Gafni;J. Staddon;Y. Yin
在内容分发的许多应用中，广播信道用于将信息从分发中心传输到大量用户。广播加密方案使中心能够防止某些用户恢复以加密形式广播的信息，而可追踪性方案使中心能够追踪合谋生产盗版解码器的用户。在本文中，我们研究的一般方法集成的可追溯性和广播能力。特别是，我们提出了一种方法，用于addinganydesired级别的广播能力anytraceability计划和addinganydesired级别的可追溯性anybroadcast加密方案的方法。为了支持我们的一般方法，我们还提出了新的广播加密方案，这是接近最佳的总密钥数方面的建设。我们的新方案是第一个同时具有最大弹性和完全可扩展性的方案。
In many applications for content distribution, broadcast channels are used to transmit information from a distribution center to a large set of users. Broadcast encryption schemes enable the center to prevent certain users from recovering the information that is broadcast in encrypted form, while traceability schemes enable the center to trace users who collude to produce pirate decoders. In this paper, we study general methods for integrating traceability and broadcasting capability. In particular, we present a method for addinganydesired level of broadcasting capability toanytraceability scheme and a method for addinganydesired level of traceability toanybroadcast encryption scheme. To support our general methods, we also present new constructions of broadcast encryption schemes which are close to optimal in terms of the total number keys required. Our new schemes are the first to be both maximally resilient and fully scalable.