High Capacity, Secure (n, n/8) Multi Secret Image Sharing Scheme with Security Key

TL;DR

This paper introduces a novel (n, n/8) multi-secret image sharing scheme that enhances security and capacity by using a unique security key and comparison image, preventing partial secret recovery and improving confidentiality.

Contribution

The paper proposes a new (n, n/8) multi-secret sharing algorithm with increased security features and higher sharing capacity using a comparison image and security key.

Findings

Enhanced security against partial secret recovery

Increased sharing capacity with (n, n/8) scheme

Use of comparison image improves robustness

Abstract

The rising need of secret image sharing with high security has led to much advancement in lucrative exchange of important images which contain vital and confidential information. Multi secret image sharing system (MSIS) is an efficient and robust method for transmitting one or more secret images securely. In recent research, n secret images are encrypted into n or n+ 1 shared images and stored in different database servers. The decoder has to receive all n or n+1 encrypted images to reproduce the secret image. One can recover partial secret information from n-1 or fewer shared images, which poses risk for the confidential information encrypted. In this proposed paper we developed a novel algorithm to increase the sharing capacity by using (n, n/8) multi-secret sharing scheme with increased security by generating a unique security key. A unrevealed comparison image is used to produce shares which makes the secret image invulnerable to the hackers