VISUAL SECRETE SHARING USING NATURAL IMAGES

Abstract

Traditional cryptography is a method of converting secrete message into unreadable formats by using some keys. This cipher text can be shared through the network without fear. But there occurs some problems using this method like anyone can obtain message easily by applying key on cipher text. Another method is Visual Cryptography is a one of the encryption technique which is used to hide the information and data in image. This method uses two transparent images. One image contains random pixel and other image contains secrete information. Images are partition into n shares and they get encoded and then stored in digital format. The shares can appear as noise like pixels or as meaningful images; but it will arouse suspicion and increase transmission risk. So, Visual Cryptography suffers from a transmission risk problem for the secrete itself. Hence to address this problem NVSS (Natural Visual Secrete Sharing) can be used. The proposed NVSS (n,n) scheme can share secrete image over (n-1) natural images(called natural shares). This paper shows the anticipation that image sharing with NVSS is promising.