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Journal of Electronic Imaging

Random grid-based visual cryptography with identifiable shares
Author(s): Ran-Zan Wang; Yao-Ting Lee
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Paper Abstract

This paper proposes a visual cryptography (VC) by a random grid (RG) scheme with identifiable shares. The method encodes an image O in two shares that exhibits the following features: 1. each generated share is a RG with the same scale as O; 2. any share singly reveals no secret information on O; 3. the secrets can be revealed by superimposing the two generated shares; 4. folding up a share will display the identification patterns associated with it; and 5. both of the secret information and the identification patterns are recognized by the naked eye without any computation. The property to show identification patterns by simply folding it up is novel to visual cryptographic schemes in the literature. It provides useful information to identify the pair of shares belonging to a secret image, and establishes a simple and friendly interface for users to distinguish among and manage the numerous shares created by VC schemes.

Paper Details

Date Published: 1 January 2011
PDF: 8 pages
J. Electron. Imag. 20(1) 013021 doi: 10.1117/1.3557792
Published in: Journal of Electronic Imaging Volume 20, Issue 1
Show Author Affiliations
Ran-Zan Wang, Yuan Ze Univ. (Taiwan)
Yao-Ting Lee, Yuan Ze Univ. (Taiwan)

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