Attacks on digital watermarks: classification, estimation based attacks, and benchmarks

Attacks on Digital Watermarks: Classification, Implications, Benchmarks

Robustness against attacks is a major watermarking requirement. Absolute robustness against all possible attacks and their combinations may be impossible to achieve. In this paper, investigation made regarding the various attacks on the digital watermarking systems and its categorization. Attacks on digital watermarks must consider both watermark survival and the distortion of the attacked docu...

Introduction to Digital Watermarks and Classification of Attacks

Desynchronization Attacks on Watermarks

Digital watermarking is used for the copyright protection of multimedia documents like image. One problem in it is the desynchronization attacks of the watermark at the receiver. Here a channel model for watermark reception with non perfect synchronization is introduced. Under the given channel model the capacity of SCS water marking and imperfectly synchronized reception is derived. One import...

Analysis of Risks and Attacks on Digital Audio Watermarks

This paper presents a risks analysis of applying digital audio watermarks and a classification of corresponding attacks describing possible countermeasures where available. The categorization of attacks into the three major groups of removal, embedding and detection attacks is presented. The categorization is based on the effect the attack should produce during the detection of the audio waterm...

Scale estimation in two-band filter attacks on QIM watermarks

This paper presents a scheme for estimating two-band amplitude scale attack within a quantization-based watermarking context. Quantization-based watermarking schemes comprise a class of watermarking schemes that achieves the channel capacity in terms of additive noise attacks. Unfortunately, Quantization-based watermarking schemes are not robust against Linear Time Invariant (LTI) filtering att...