Quantum signal processing-based visual cryptography with unexpanded shares

Surya Sarathi Das; Kaushik Das Sharma; Jayanta K. Chandra; Jitendra Nath Bera

doi:10.1117/1.JEI.24.5.053026

15 October 2015 Quantum signal processing-based visual cryptography with unexpanded shares

Surya Sarathi Das, Kaushik Das Sharma, Jayanta K. Chandra, Jitendra Nath Bera

Author Affiliations +

Journal of Electronic Imaging, Vol. 24, Issue 5, 053026 (October 2015). https://doi.org/10.1117/1.JEI.24.5.053026

Abstract

This paper proposes a visual cryptography scheme (VCS) based on quantum signal processing (QSP). VCS is an image encryption technique that is very simple in formulation and is secure. In (k,n)-VCS, a secret binary image is encoded into n share images and minimum k shares are needed to decrypt the secret image. The efforts to encrypt a grayscale image are few in number and the majority are related to grayscale to binary conversion. Thus, a generalized approach of encryption for all types of images, i.e., binary, gray, and color is needed. Here, a generic VCS is proposed based on QSP where all types of images can be encrypted without pixel expansion along with a smoothing technique to enhance the quality of the decrypted image. The proposed scheme is tested and compared for benchmark images, and the result shows the effectiveness of the scheme.

Citation Download Citation

Surya Sarathi Das, Kaushik Das Sharma, Jayanta K. Chandra, and Jitendra Nath Bera "Quantum signal processing-based visual cryptography with unexpanded shares," Journal of Electronic Imaging 24(5), 053026 (15 October 2015). https://doi.org/10.1117/1.JEI.24.5.053026

Published: 15 October 2015

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