Fingerprinting Codes for Internet-Based Live Pay-TV System Using Balanced Incomplete Block Designs

Shuhui HOU  Tetsutaro UEHARA  Takashi SATOH  Yoshitaka MORIMURA  Michihiko MINOH  

IEICE TRANSACTIONS on Information and Systems   Vol.E92-D   No.5   pp.876-887
Publication Date: 2009/05/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E92.D.876
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Contents Protection
fingerprinting code,  anti-collusion code,  BIBD,  unital,  affine plane,  

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In recent years, with the rapid growth of the Internet as well as the increasing demand for broadband services, live pay-television broadcasting via the Internet has become a promising business. To get this implemented, it is necessary to protect distributed contents from illegal copying and redistributing after they are accessed. Fingerprinting system is a useful tool for it. This paper shows that the anti-collusion code has advantages over other existing fingerprinting codes in terms of efficiency and effectivity for live pay-television broadcasting. Next, this paper presents how to achieve efficient and effective anti-collusion codes based on unital and affine plane, which are two known examples of balanced incomplete block design (BIBD). Meanwhile, performance evaluations of anti-collusion codes generated from unital and affine plane are conducted. Their practical explicit constructions are given last.