Dynamic traitor tracing

作     者：Fiat, A Tassa, T 

作者机构：Tel Aviv Univ Sch Math Sci Dept Comp Sci IL-69978 Tel Aviv Israel Algorithm Res Ltd Petah Tiqwa Israel 

出 版 物：《JOURNAL OF CRYPTOLOGY》 (密码学杂志)

年 卷 期：2001年第14卷第3期

页      面：211-223页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：broadcast encryption traitor tracing watermarking imprinting pay TV on-line algorithms 

摘      要：Traitor tracing schemes were introduced to combat the typical piracy scenario whereby pirate decoders (or access control smartcards) are manufactured and sold by pirates to illegal subscribers. Those traitor tracing schemes, however, are ineffective for the currently less common scenario where a pirate publishes the periodical access control keys on the Internet or, alternatively, simply rebroadcasts the content via an independent pirate network. This new piracy scenario may become especially attractive (to pirates) in the context of broadband multicast over the Internet. In this paper we consider the consequences of this type of piracy and offer countermeasures. We introduce the concept of dynamic traitor tracing which is a practical and efficient tool to combat this type of piracy.