Exploiting sensitivity of nonorthogonal joint diagonalisation as a security mechanism in steganography


We have recently proposed the framework of independent blind source separation as an advantageous approach to steganography. Amongst the several characteristics noted was a sensitivity to message reconstruction due to small perturbations in the sources. This characteristic is not common in most other approaches to steganography. In this paper we discuss how this sensitivity relates the joint diagonalisation inside the independent component approach, and reliance on exact knowledge of secret information, and how it can be used as an additional and inherent security mechanism against malicious attack to discovery of the hidden messages. The paper therefore provides an enhanced mechanism that can be used for e-document forensic analysis and can be applied to different dimensionality digital data media. In this paper we use a low dimensional example of biomedical time series as might occur in the electronic patient health record, where protection of the private patient information is paramount.

Publication DOI: https://doi.org/10.1109/ICDSP.2009.5201074
Divisions: Engineering & Applied Sciences
Engineering & Applied Sciences > Mathematics
Engineering & Applied Sciences > Systems analytics research institute (SARI)
Additional Information: © 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Event Title: 16th International Conference on Digital Signal Processing
Event Type: Other
Event Dates: 2009-07-05 - 2009-07-07
Uncontrolled Keywords: ICA,joint diagonalisation,nonorthogonal,sensitivity,watermarking,Computer Vision and Pattern Recognition,Signal Processing
ISBN: 978-1-4244-3298-1, 978-1-4244-3297-4
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2009-07-05
Authors: Matam, Basava R.
Lowe, David



Version: Accepted Version

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