A new secret sharing scheme for images based on additive 2-dimensional cellular automata

Authors:
Gonzalo Álvarez Marañón;Luis Hernández Encinas;Ángel Martín del Rey
Affiliations:
Instituto de Física Aplicada, CSIC, Madrid, Spain;Instituto de Física Aplicada, CSIC, Madrid, Spain;EPS, Universidad de Salamanca, Ávila, Spain
Venue:
IbPRIA'05 Proceedings of the Second Iberian conference on Pattern Recognition and Image Analysis - Volume Part I
Year:
2005

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Abstract

A new secret color image sharing scheme based on two-dimensional memory cellular automata, is proposed. Such protocol is of a (n,n)-threshold scheme where the secret image to be shared is considered as one of the initial configurations of the cellular automata. The original idea is to study how a reversible model of computation permits to compute the shares and then using the reverse computation in order to recover the original image. The scheme is proved to be perfect and ideal, and resistant to the most important attacks such as statistical attacks.