Comments on matrix-based secret sharing scheme for images

Authors:
Esam Elsheh;A. Ben Hamza
Affiliations:
Concordia Institute for Information Systems Engineering, Concordia University, Montréal, QC, Canada;Concordia Institute for Information Systems Engineering, Concordia University, Montréal, QC, Canada
Venue:
CIARP'10 Proceedings of the 15th Iberoamerican congress conference on Progress in pattern recognition, image analysis, computer vision, and applications
Year:
2010

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Abstract

Several attempts have been made to propose efficient secret sharing schemes for 2D images. Rey M.D (Iberoamerican Congress on Pattern Recognition, 2008) proposed a relatively fast image secret sharing scheme based on simple binary matrix operations. In this work, we show that care should be taken when choosing the matrices that corresponding to the shares, in particular if the rank of these singular matrices is not low enough then one can recover the secret image from only one share. Experimental results are provided to demonstrate the practicality of the recovery procedure on various 2D images.