How to say yes, no and maybe with visual cryptography

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Dept. of Pure Mathematics and Computer Algebra, Ghent University, Krijgslaan 281-S22, 9000 Ghent

Received: December 31, 2007

Revised: May 31, 2008

Published: July 2008

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Abstract

We present a version of a visual cryptography scheme in which a qualified set of participants is able to block the reconstruction of the secret.

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Mathematics Subject Classification: Primary: 94A60, 68P25; Secondary: 90C90.

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