Designs, Codes and Cryptography

, Volume 20, Issue 3, pp 325–336

New Colored Visual Secret Sharing Schemes

  • Ching-Nung Yang
  • Chi-Sung Laih
Article

DOI: 10.1023/A:1008382327051

Cite this article as:
Yang, C. & Laih, C. Designs, Codes and Cryptography (2000) 20: 325. doi:10.1023/A:1008382327051

Abstract

Visual secretsharing (VSS) schemes are used to protect the visual secret bysending n transparencies to different participantsso that k-1 or fewer of them have no informationabout the original image, but the image can be seen by stackingk or more transparencies. However, the revealedsecret image of a conventional VSS scheme is just black and white.The colored k out of n VSS scheme sharinga colored image is first introduced by Verheul and Van Tilborg[1]. In this paper, a new construction for the colored VSS schemeis proposed. This scheme can be easily implemented on basis ofa black & white VSS scheme and get much better block lengththan the Verheul-Van Tilborg scheme.

Visual cryptographysecret sharing scheme

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Ching-Nung Yang
    • 1
  • Chi-Sung Laih
    • 2
  1. 1.Department of Computer Science and Information EngineeringNational Dong Hwa UniversityHualienTaiwan
  2. 2.Department of Electrical EngineeringNational Cheng Kung UniversityTainanTaiwan, R.O.C.