Covert Image Transfer: A Secret Sharing Technique
Subharag Sarkar, Akash Dasgupta, Aloke Bhakta · International Journal of Computer Applications · 2015
In cryptography, the art of secret sharing, is to share among a group of selected few an individual share of the secret.Individual shares are of no use on their own.The multifaceted implementation of this scheme in literature including Shamir, Blakley and Asmuth-Bloom to name a few, has led to the emergence of higher computational complexity during both sharing and reconstruction and generates noise like shares.In order to come up with a meaningful sharing scheme, Lin and Tsai proposed a method that uses Steganography using Shamir's secret sharing scheme; again which led to high computational complexity.Therefore, in order to overcome the above problem, a new scheme is suggested which deploys simple graphical masking, done by simply ANDing, value substitution for share generation and reconstruction can be done by value re-substitution and then ORing the qualified set of shares.Also, this proposed method finally creates, meaningful shares by using Steganography; instead of noise like shares.