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On the assumption of equal contributions in fingerprinting

Schaathun, HG (2008) On the assumption of equal contributions in fingerprinting IEEE Transactions on Information Forensics and Security, 3 (3). 569 - 572. ISSN 1556-6013


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With a digital fingerprinting scheme, a vendor of digital copies of copyrighted material marks each individual copy with a unique fingerprint. If an illegal copy appears, it can be traced back to one or more guilty pirates due to this fingerprint. A coalition of pirates may combine their copies to produce an unauthorized copy with a false, hybrid finger-print. It is often assumed in the literature that the members of the collusion will make equal contributions to the hybrid fingerprint, because nobody mill accept an increased risk of being caught. We argue that no such assumption is valid a priori, and we show that a published solution by Sebe and Domingo-Ferrer can he broken by breaking the assumption.

Item Type: Article
Divisions: Faculty of Engineering and Physical Sciences > Computing Science
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:45
Last Modified: 23 Sep 2013 18:35

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