Collusion-resistant fingerprinting for multimedia

Trappe, Min Wu, Ray Liu
2002 IIEEE International Conference on Acoustics Speech and Signal Processing  
nsuring that digital content is used for its intended purpose after it has been delivered to customers often requires the ability to track and identify entities involved in unauthorized redistribution of multimedia content. Digital fingerprinting is a technology for enforcing digital rights policies whereby unique labels, known as digital fingerprints, are inserted into content prior to distribution. As illustrated in Figure 1 , unique fingerprints are assigned to each intended recipient. These
more » ... fingerprints can facilitate the tracing of the culprits who use their content for unintended purposes. To protect the content, it is necessary that the fingerprints are difficult to remove from the content. For multimedia content, fingerprints can be embedded using conventional watermarking techniques that are typically concerned with robustness against a variety of attacks mounted by an individual. Guaranteeing the appropriate use of multimedia content, however, is no longer a traditional security issue with a single adversary. The global nature of the Internet has brought adversaries closer to each other. It is now easy for a group of users with differently marked versions of the same content to work together and collectively mount attacks against the fingerprints. These attacks, known as multiuser collusion attacks, provide a cost-effective method for attenuating each of the colluders' fingerprints. An improperly designed embedding and identification scheme may be vulnerable in the sense that a small coalition of colluders can successfully produce a new version of the content with no detectable traces. Thus, collusion poses a real threat to protecting media data and enforcing usage policies. It is desirable, therefore, to design fingerprints that resist collusion and identify the colluders. A broad overview of the recent advances in multimedia fingerprinting for tracing and identifying colluders.
doi:10.1109/icassp.2002.1004619 fatcat:hkavnow3w5glvdgim42x2kdltq