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Proceedings Paper

Forensic steganalysis: determining the stego key in spatial domain steganography
Author(s): Jessica Fridrich; Miroslav Goljan; David Soukal; Taras Holotyak
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Paper Abstract

This paper is an extension of our work on stego key search for JPEG images published at EI SPIE in 2004. We provide a more general theoretical description of the methodology, apply our approach to the spatial domain, and add a method that determines the stego key from multiple images. We show that in the spatial domain the stego key search can be made significantly more efficient by working with the noise component of the image obtained using a denoising filter. The technique is tested on the LSB embedding paradigm and on a special case of embedding by noise adding (the ±1 embedding). The stego key search can be performed for a wide class of steganographic techniques even for sizes of secret message well below those detectable using known methods. The proposed strategy may prove useful to forensic analysts and law enforcement.

Paper Details

Date Published: 21 March 2005
PDF: 12 pages
Proc. SPIE 5681, Security, Steganography, and Watermarking of Multimedia Contents VII, (21 March 2005); doi: 10.1117/12.585987
Show Author Affiliations
Jessica Fridrich, State Univ. of New York/Binghamton (United States)
Miroslav Goljan, State Univ. of New York/Binghamton (United States)
David Soukal, State Univ. of New York/Binghamton (United States)
Taras Holotyak, State Univ. of New York/Binghamton (United States)


Published in SPIE Proceedings Vol. 5681:
Security, Steganography, and Watermarking of Multimedia Contents VII
Edward J. Delp; Ping W. Wong, Editor(s)

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