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An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation

Koji NUIDA, Satoshi FUJITSU, Manabu HAGIWARA, Hideki IMAI, Takashi KITAGAWA, Kazuto OGAWA, Hajime WATANABE

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Summary :

The code length of Tardos's collusion-secure fingerprint code is of theoretically minimal order with respect to the number of adversarial users (pirates). However, the constant factor should be further reduced for practical implementation. In this article, we improve the tracing algorithm of Tardos's code and propose a 2-secure and short random fingerprint code, which is secure against collusion attacks by two pirates. Our code length is significantly shorter than that of Tardos's code and its tracing error probability is practically small.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.1 pp.197-206
Publication Date
2009/01/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E92.A.197
Type of Manuscript
Special Section PAPER (Special Section on Cryptography and Information Security)
Category
Application

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