Enhanced Boolean-based multi secret image sharing scheme

doi:10.1016/j.jss.2015.01.031

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Enhanced Boolean-based multi secret image sharing scheme

2016-06-01

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Ching‐Nung Yang *

Cheng-Hua Chen

Song-Ruei Cai

DOI：10.1016/j.jss.2015.01.031

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Abstract

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Recently, Chen and Wu propose a (n, n) multi secret image sharing (MSIS) scheme that shares n secret images into n shared images. These n shared images can be together used for reconstructing n secret images by Boolean operations. However, there is an inaccuracy in Chen and Wu's (n, n)-MSIS scheme that one can recover some secret images (partial secret information) from (n-1) or fewer shared images. This compromises the threshold security in (n, n)-MSIS scheme. In this paper, we overcome this inaccuracy and propose a strong threshold (n, n)-MSIS scheme without leaking partial secret information from (n-1) or fewer shared images. Moreover, by an inherent property of image that a permutated image with a chaotic reallocation of pixels without effect on their intensity levels, we propose a modified strong (n, n)-MSIS scheme to further enhance the randomness of shared images. (C) 2015 Elsevier Inc. All rights reserved.

Keywords:

Secret image sharing

Multi secret image secret sharing

Boolean operation

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