On estimation of secret message length in LSB steganography in spatial domain

Jessica Fridrich; Miroslav Goljan

doi:10.1117/12.521350

22 June 2004 On estimation of secret message length in LSB steganography in spatial domain

Jessica Fridrich, Miroslav Goljan

Proceedings Volume 5306, Security, Steganography, and Watermarking of Multimedia Contents VI; (2004) https://doi.org/10.1117/12.521350
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

In this paper, we present a new method for estimating the secret message length of bit-streams embedded using the Least Significant Bit embedding (LSB) at random pixel positions. We introduce the concept of a weighted stego image and then formulate the problem of determining the unknown message length as a simple optimization problem. The methodology is further refined to obtain more stable and accurate results for a wide spectrum of natural images. One of the advantages of the new method is its modular structure and a clean mathematical derivation that enables elegant estimator accuracy analysis using statistical image models.

Citation Download Citation

Jessica Fridrich and Miroslav Goljan "On estimation of secret message length in LSB steganography in spatial domain", Proc. SPIE 5306, Security, Steganography, and Watermarking of Multimedia Contents VI, (22 June 2004); https://doi.org/10.1117/12.521350

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