A Trade-off Traitor Tracing Scheme

Go OHTAKE  Kazuto OGAWA  Goichiro HANAOKA  Hideki IMAI  

IEICE TRANSACTIONS on Information and Systems   Vol.E92-D   No.5   pp.859-875
Publication Date: 2009/05/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E92.D.859
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Contents Protection
dynamic traitor tracing,  watermarking,  digital rights management,  content distribution,  

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There has been a wide-ranging discussion on the issue of content copyright protection in digital content distribution systems. Fiat and Tassa proposed the framework of dynamic traitor tracing. Their framework requires dynamic computation transactions according to the real-time responses of the pirate, and it presumes real-time observation of content redistribution. Therefore, it cannot be simply utilized in an application where such an assumption is not valid. In this paper, we propose a new scheme that provides the advantages of dynamic traitor tracing schemes and also overcomes their problems.