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A Construction of the (4; n)-Threshold Visual Cryptography Scheme Using a 3-Design

DOI

Abstract

A (θ; n)-threshold visual cryptography scheme ((θ; n)-VCS) is one of secret sharing schemes for black-white images. In the (θ; n)-VCS, a dealer generates n black-white images called shares from a secret image by using two Boolean matrices called basis matrices. In this paper we propose a new construction of the basis matrices of the (4; n)-VCS using a combinatorial structure known as the 3-design. We establish validity of the obtained basis matrices and give formulas of the pixel expansion m and the relative difference αn of superimposed n shares. This construction can yield basis matrices with a much smaller pixel expansion than existing ones.

Journal

  • IEICE Proceeding Series

    IEICE Proceeding Series 55 223-227, 2018-10-18

    The Institute of Electronics, Information and Communication Engineers

Details

  • CRID
    1390564227332962688
  • NII Article ID
    230000011193
  • DOI
    10.34385/proc.55.mo-pm-2-2.4
  • ISSN
    21885079
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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