New scheme of dynamic traitor tracing against the immediate rebroadcast attack  

作　　者：苏加军 王新梅 

机构地区：[1]State Key Laboratory of Integrated Service Network,Xidian University

出　　处：《Journal of Beijing Institute of Technology》2015年第1期128-132,共5页北京理工大学学报（英文版）

基　　金：Supported by the National Key Basic Research and Development Program(973 Program)(2012CB316103)

摘　　要：Traitor tracing schemes are introduced to combat the piracy scenarios. The notation of dynamic traitor tracing is proposed by Fiat and Tassa, which fights against rebroadcast of decrypted content. In this paper, using the idea of searching user address level by level, a new dynamic traitor tracing scheme based on a multilevel structure of user set is constructed. The scheme proposed can efficiently combat with the immediate rebroadcast attack, and possesses lower tracing complexity. Importantly, the tracing scheme can be applicable to systems with different sizes of subscriber sets.Traitor tracing schemes are introduced to combat the piracy scenarios. The notation of dynamic traitor tracing is proposed by Fiat and Tassa, which fights against rebroadcast of decrypted content. In this paper, using the idea of searching user address level by level, a new dynamic traitor tracing scheme based on a multilevel structure of user set is constructed. The scheme proposed can efficiently combat with the immediate rebroadcast attack, and possesses lower tracing complexity. Importantly, the tracing scheme can be applicable to systems with different sizes of subscriber sets.

关 键 词：traitor tracing copyright protection rebroadcast attack WATERMARKING 

分 类 号：TN918.1[电子电信—通信与信息系统] TN934[电子电信—信息与通信工程]