Collusion-Secure Fingerprinting for Digital Data (Extended Abstract)
CRYPTO '95 Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology
Optimal probabilistic fingerprint codes
Proceedings of the thirty-fifth annual ACM symposium on Theory of computing
SP '83 Proceedings of the 1983 IEEE Symposium on Security and Privacy
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IEEE Transactions on Information Forensics and Security
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IEEE Transactions on Information Theory
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We introduce two novel collusion attacks against digital fingerprinting using additive spread-spectrum watermarks. These attacks demonstrate that the He-Wu fingerprinting system is considerably less secure against collusive attacks than suggested by the original paper. In addition to causing error rates above 85% at the decoder with as few as 8 colluders, one of our two attacks give copies with less distortion (measured by Euclidean distance) than the fingerprinted copies originally distributed.