Journal article
Extended visual cryptography schemes
Publication Details
Authors: | Klein, A. |
Publication year: | 2007 |
Journal: | Information and Computation |
Pages range : | 716-732 |
Volume number: | 205 |
Start page: | 716 |
End page: | 732 |
ISSN: | 0890-5401 |
Abstract
Visual cryptography schemes have been introduced in 1994 by Naor and Shamir. Their idea was to encode a secret image into n shadow images and to give exactly one such shadow image to each member of a group P of n persons. Whereas most work in recent years has been done concerning the problem of qualified and forbidden subsets of P or the question of contrast optimizing, in this paper we study extended visual cryptography schemes, i.e., shared secret systems where any subset of' P shares its own secret. (c) 2007 Published by Elsevier Inc.
Visual cryptography schemes have been introduced in 1994 by Naor and Shamir. Their idea was to encode a secret image into n shadow images and to give exactly one such shadow image to each member of a group P of n persons. Whereas most work in recent years has been done concerning the problem of qualified and forbidden subsets of P or the question of contrast optimizing, in this paper we study extended visual cryptography schemes, i.e., shared secret systems where any subset of' P shares its own secret. (c) 2007 Published by Elsevier Inc.
