Audio watermarking forensics: detecting malicious re-embedding

Sascha Zmudzinski; Martin Steinebach; Stefan Katzenbeisser; Ulrich Rührmair

doi:10.1117/12.838881

27 January 2010 Audio watermarking forensics: detecting malicious re-embedding

Sascha Zmudzinski, Martin Steinebach, Stefan Katzenbeisser, Ulrich Rührmair

Author Affiliations +

Proceedings Volume 7541, Media Forensics and Security II; 75410G (2010) https://doi.org/10.1117/12.838881
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States

Abstract

Digital watermarking has become a widely used security technology in the domain of digital rights management and copyright protection as well as in other applications. In this work, we show recent results regarding a particular security attack: Embedding a new message in a previously watermarked cover using the same key as the original message. This re-embedding can be the consequence of the absence of truly asymmetric watermarking solutions, especially if the watermark is to be detected in public. In public detection scenarios, every detector needs the same key the embedder used to watermark the cover. With knowledge of the embedding algorithm, everybody who is able to detect the message can also maliciously embed a new message with the same key over the old one. This scenario is relevant in the case that an attacker intends to counterfeit a copyright notice, transaction ID or to change an embedded authentication code. This work presents experimental results on mechanisms for identifying such multiple embeddings in a spreadspectrum patchwork audio watermarking approach. We demonstrate that under certain circumstances such multiple embedding can be detected by watermarking-forensics.

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Sascha Zmudzinski, Sascha Zmudzinski, Martin Steinebach, Martin Steinebach, Stefan Katzenbeisser, Stefan Katzenbeisser, Ulrich Rührmair, Ulrich Rührmair, } "Audio watermarking forensics: detecting malicious re-embedding", Proc. SPIE 7541, Media Forensics and Security II, 75410G (27 January 2010); doi: 10.1117/12.838881; https://doi.org/10.1117/12.838881

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