This book constitutes the thoroughly refereed post-proceedings of the 8th International Workshop on Information Hiding, IH 2006, held in Alexandria, VA, USA in July 2006. The 25 revised full papers presented were carefully selected from over 70 papers submitted. The papers are organized in topical sections on watermarking, information hiding and networking, data hiding in unusual content, fundamentals, software protection, steganalysis, steganography, and subliminal channels. This volume constitutes the refereed post-proceedings of the 8th International Workshop on Information Hiding held in Alexandria, Virginia, in July 2006. Twenty-five carefully reviewed full papers are organized into topical sections covering watermarking, information hiding and networking, data hiding in unusual content, fundamentals, software protection, steganalysis, steganography, and subliminal channels. Hamiltonian Mechanics Natural Watermarking: A Secure Spread Spectrum Technique for WOA 1 Patrick Bas and Fran s Cayre An Improved Asymmetric Watermarking System Using Matrix Embedding 15 Scott Craver A Cryptographic Method for Secure Watermark Detection 26 Michael Malkin and Ton Kalker Steganographic Communication in Ordered Channels 42 R.C. Chakinala, A. Kumarasubramanian, R. Manokaran, G. Noubir, C. Pandu Rangan, and R. Sundaram Analyzing Network-Aware Active Wardens in IPv6 58 Grzegorz Lewandowski, Norka B. Lucena, and Steve J. Chapin Video Watermarking by Using Geometic Warping Without Visible Artifacts Video Watermarking by Using Geometric Warping Without Visible Artifacts 78 Dima Pr frock, Mathias Schlauweg, and Erika M ller Time-Scale Invariant Audio Watermarking Based on the Statistical Features in Time Domain 93 Shijun Xiang, Jiwu Huang, and Rui Yang Content-Aware Steganography: About Lazy Prisoners and Narrow-Minded Wardens 109 Richard Bergmair and Stefan Katzenbeisser Noisy Timing Channels with Binary Inputs and Outputs 124 Keye Martin and Ira S. Moskowitz A Computational Model for Watermark Robustness 145 Andr delsbach, Stefan Katzenbeisser, and Ahmad-Reza Sadeghi Hiding Information Hiding 161 Adam Young and Moti Yung Reversible Watermarking of NURBS-Based CAD Models 172 Wolfgang Funk A High-Capacity Data Hiding Method for Polygonal Meshes 188 Hao-tian Wu and Yiu-ming Cheung Steganography for Radio Amateurs A DSSS Based Approach for Slow Scan Television 201 Andreas Westfeld Delayed and Controlled Failures in Tamper-Resistant Software 216 Gang Tan, Yuqun Chen, and Mariusz H. Jakubowski A Model for Self-Modifying Code 232 Bertrand Anckaert, Matias Madou, and Koen De Bosschere A Markov Process Based Approach to Effective Attacking JPEG Steganography 249 Yun Q. Shi, Chunhua Chen, and Wen Chen Batch Steganography and Pooled Steganalysis 265 Andrew D. Ker On Steganographic Embedding Efficiency 282 Jessica Fridrich, Petr Lisonek, and David Soukal Bandwidth Optimal Steganography Secure Against Adaptive Chosen Stegotext Attacks 297 Tri Van Le and Kaoru Kurosawa Modified Matrix Encoding Technique for Minimal Distortion Steganography 314 Younhee Kim, Zoran Duric, and Dana Richards Statistically Secure Anti-Collusion Code Design for Median Attack Robustness for Practical Fingerprinting 328 Jae-Min Seol and Seong-Whan Kim A Collusion-Resistant Video Watermarking Scheme 343 Amir Houmansadr and Shahrokh Ghaemmaghami An Elliptic Curve Backdoor Algorithm for RSASSA 355 Adam Young and Moti Yung A Subliminal-Free Variant of ECDSA 375 Jens-Matthias Bohli, Maria Isabel Gonz z Vasco, and Rainer Steinwandt Author Index 389