Secret image sharing based on multiphase retrieval algorithm

Abstract

This paper proposes a multiphase retrieval algorithm and then presents a secret image sharing scheme. The proposed algorithm can divide a secret image into multiple phase-only encodings (shadows) and then overcome the shadow expansion problem. When the shadows are arranged in a certain order, the light intensity detector can directly acquire the secret image using parallel light, and the recovery process is simple and easy to operate. Furthermore, Fresnel transform parameters are used for authentication, which can avoid deceit. The differences in the initial random phase encodings make the same secret image produce different shadows, which can effectively resist statistical analysis attacks. Finally, theoretical analysis and a simulation are used to verify the validity and feasibility of the proposed scheme.

KEYWORDS:

• Secret sharing
• secret image sharing
• phase retrieval algorithm
• multiphase retrieval algorithm

Acknowledgments

On behalf of my co-authors, we would like to express our great appreciation to editor and reviewers. Scientific Research Projects of Hebei colleges and universities (QN2020511).

Disclosure statement

No potential conflict of interest was reported by the author(s).