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Published in:
2009 | OriginalPaper | Chapter
A Secret Sharing Scheme for Digital Images Based on Cellular Automata and Boolean Functions
Authors : Ángel Martín del Rey, Gerardo Rodríguez Sánchez
Published in: Bio-Inspired Systems: Computational and Ambient Intelligence
Publisher: Springer Berlin Heidelberg
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In this paper an efficient probabilistic secret sharing scheme for black and white digital images is introduced. It is an extension of the algorithm proposed originally in [11]. Specifically, it is a (
m
,
n
)-threshold scheme. It is based on the use of a simple matrix boolean function which involves the Hadamard matrix product modulo 2, and the addition modulo 2 and
m
. Moreover, an algorithm based on cellular automata is used for the enhancement of the recovered image. The algorithm introduced is shown to be secure and its expansion factor is equal to 1.