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Embedding with syndrome coding based on BCH codes: The corrected version of this paper is now available as full text. To view the original document as presented in the printed proceedings (with its errors), download the supplemental file

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Embedding with syndrome coding based on BCH codes: The corrected version of this paper is now available as full text. To view the original document as presented in the printed proceedings (with its errors), download the supplemental file

Content Provider	ACM Digital Library
Author	Winkler, Antje Schönfeld, Dagmar
Abstract	With Matrix Embedding based on Hamming Codes, coding theory has entered the field of steganography. Even though this class of structured codes had been used successfully in practical systems to minimize the number of embedding changes, thus maximizing embedding efficiency, further developments, such as Wet Paper Codes, were based on random codes instead.This paper redraws attention to structured codes, which are built according to deterministic rules. In particular, we study BCH Codes for embedding with syndrome coding, using either a structured matrix Hk x n as in Matrix Embedding, or a generator polynomial g(χ). We propose different approaches for embedding without locked elements, which differ in the tradeoff reached between embedding complexity and efficiency.As some practical systems allow more secure steganography if embedding constraints -- in terms of locked elements -- are respected, we demonstrate how BCH Codes can be employed in a Wet Paper Codes scenario as well. Based on a deduced analogy between code rate and the maximum number of lockable elements, we can find appropriate code parameters for a given fraction of locked elements in the cover, complexity constraints, and desired probability of successful embedding.
Starting Page	214
Ending Page	223
Page Count	10
File Format	PDF
ISBN	1595934936
DOI	10.1145/1161366.1161405
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2006-09-26
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Coding theory Steganography Syndrome coding Matrix embedding
Content Type	Text
Resource Type	Article

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