Spread-spectrum watermarking security
IEEE Transactions on Information Forensics and Security
Natural watermarking: a secure spread spectrum technique for WOA
IH'06 Proceedings of the 8th international conference on Information hiding
Practical security analysis of dirty paper trellis watermarking
IH'07 Proceedings of the 9th international conference on Information hiding
Watermarking security: theory and practice
IEEE Transactions on Signal Processing - Part II
Kerckhoffs-Based Embedding Security Classes for WOA Data Hiding
IEEE Transactions on Information Forensics and Security
Towards robust and secure watermarking
Proceedings of the 12th ACM workshop on Multimedia and security
IH'11 Proceedings of the 13th international conference on Information hiding
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This article presents a new approach to use secure spread-spectrum watermarking in the Watermarked Only Attack (WOA) framework (the adversary owns several marked contents and wants to estimate the secret key). Because security of watermarking schemes relies on the distribution of marked contents in a private subspace, we use the transportation theory in order to derive a mapping that will minimize the global distortion of Natural Watermarking (NW) while keeping the same security level. Contrarily to another technique presented in [13], the embedding does not depend on computationally demanding pre-computed mapping. Moreover, we show that this method does not reduce the robustness of the classical NW scheme and enables to decrease the WCR by several dBs regarding former implementations. Tests are made on 2000 Gaussian signals.