A (2, 2) Secret Sharing Scheme Based on Hamming Code and AMBTC

Abstract

AbstractWe present a secret sharing scheme based on absolute moment block truncation coding (AMBTC) and Hamming code theory. AMBTC is composed of bit planes and two representative gray level pixel values, which are the high and low range means. In this secret sharing scheme, a dealer distributes a secret image to the participants as shadow images. It is important in a secret sharing scheme to keep the shadow images confidential. We therefore propose verifying the authenticity of the reconstructed secret image during the revealing and verifying phase. In order to improve confidentiality, our proposed scheme uses meaningful AMBTC compressed images. Experimental results show that the reconstructed secret sharing images are the same as the original secret sharing images and that the proposed scheme exhibits good performance compared to that of previous schemes.KeywordsSecret sharingAMBTCHamming codeshadow image