Technical Program

Paper Detail

Paper:ITT-P3.4
Session:Cryptography and Watermarking; Manufacturing Applications
Time:Friday, May 21, 13:00 - 15:00
Presentation: Poster
Topic: Industry Technology Track: DSP-Based Cryptography, Stenography, and Watermarking
Title: RANDOMIZING THE REPLACEMENT ATTACK
Authors: Darko Kirovskić; Microsoft Research 
 Zeph Landau; Microsoft Research 
Abstract: Billions of dollars allegedly lost to piracy of multimedia haverecently triggered the industry to rethink the way music and movies are distributed. As encryption is vulnerable to re-recording, currently all copyright protection mechanisms tendto rely on watermarking. In order to analyze the security of such systems, recently, a new breed of replacement attacks has been proposed that strongly affects most modern watermarking systems. A typical replacement attack relies upon the observation that multimedia content is often highly repetitive. Thus, the attack procedure replaces each signal block with another, perceptually similar block computed as a combination of other similar blocks found either within the same media clip or within a library of media clips. In this paper, we demonstrate that by randomizing the attack algorithm, its performance can be improved in almost all aspects: attack efficacy, distortion, speed, and size of the look-up media library. We describe the logistics of the new attack and an exemplary implementation against a spread-spectrum data hiding technology for audio signals.
 
           Back


Home -||- Organizing Committee -||- Technical Committee -||- Technical Program -||- Plenaries
Paper Submission -||- Special Sessions -||- ITT -||- Paper Review -||- Exhibits -||- Tutorials
Information -||- Registration -||- Travel Insurance -||- Housing -||- Workshops

©2015 Conference Management Services, Inc. -||- email: webmaster@icassp2004.org -||- Last updated Wednesday, April 07, 2004