A Survey on Secret Image Sharing Scheme by use of Chaos based Visual Cryptography

Abstract

Visual cryptography is one of the branch of cryptography in which the plain text is divided into shares and at the receiving end we visually identify the original plain text by stacking those shares. This Research introduces a survey report on Secret image sharing using chaos based visual cryptography by use of  (2,8) chaos based visual cryptographic system. That means the secret image is broken up into 8 image shares and combination of two or more shares will regenerate the original image or secret image. There are some security hurdles to enhance the security of sharing system so that the secret image remains secret. The shares are noise like images, no information is shown on those images. This process results less pixel expansion, good output picture quality and having high security system.