Design of Collusion-Free Hiding Codes using MAI-Free Principle

A new methodology to design collusion-free hiding codes using the multi-access-interference-free (MAI-free) principle is proposed. A precoding technique was recently introduced in orthogonal frequency division multiplexing (OFDM) wireless communication systems to result in MAI-free codes, which simp...

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Bibliographic Details
Main Authors: Byung-Ho Cha, Kuo, C.-C.J.
Format: Conference Proceeding
Language:English
Subjects:
audio watermarking
Authorization
collusion attacks
collusion-free codes
Computer simulation
Data security
Degradation
Design methodology
Fourier transforms
MAI-free principle
OFDM
Robustness
traitor tracing
Watermarking
Wireless communication
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Description
Summary:A new methodology to design collusion-free hiding codes using the multi-access-interference-free (MAI-free) principle is proposed. A precoding technique was recently introduced in orthogonal frequency division multiplexing (OFDM) wireless communication systems to result in MAI-free codes, which simplifies the receiver design greatly. Being motivated by this work, we propose a new class of collusion-free codes called the OSIFT (orthogonal spreading followed by the inverse Fourier transform) codes. It is demonstrated by computer simulation that OSIFT codes have more robust performance against collusion attacks than existing collusion-free codes in an exemplary audio watermarking system.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2007.366193