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Multimedia Tools and Applications

, Volume 72, Issue 3, pp 2195–2209 | Cite as

A novel (n, t, n) secret image sharing scheme without a trusted third party

  • Cheng Guo
  • Chin-Chen Chang
  • Chuan Qin
Article

Abstract

Secret image sharing is a technique to share a secret image among a set of n participants. A trusted third party embeds the secret image into the cover image to generate shadow images such that at least t or more shadow images can reconstruct the secret image. In this paper, we consider an extreme and real-world situation, in which there is no one who is trusted by anyone else. In the proposed scheme, the participants can act as a dealer and communicate with each other in a secret channel. Each participant can generate her/his own shadow image independently, according to the cover image and the secret image. Experimental results are provided to show that the shadow images have satisfactory quality. In addition, our scheme has a large embedding capacity, and the secret image can be reconstructed losslessly.

Keywords

(n, t, n) secret sharing Modulo operator Additive homomorphism Secret image sharing Trusted third party 

Notes

Acknowledgments

This work was supported by the Fundamental Research Funds for the Central Universities under grants DUT12RC(3)80.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.School of SoftwareDalian University of TechnologyDalianChina
  2. 2.Department of Information Engineering and Computer ScienceFeng Chia UniversityTaichungRepublic of China
  3. 3.Department of Biomedical Imaging and Radiological ScienceChinese Medical UniversityTaichungTaiwan

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