Visual Cryptography Method for Sending Multiple Shares Using Symmetric Encryption Algorithm

Abstract

An image can be splitted into two random shares which once individually viewed reveals no idea about the secret picture. The secret image can be obtained by union of the two shares. This method is known as Visual Cryptography. Conventional k out of n visual cryptography scheme is used to encrypt a solitary picture into n shares. The image can be decoded by using only k or more shares. Many existing illustration cryptographic methods uses binary images only for this process. This doesn’t suits well for many applications. The main objective of this project is to establish message among the sender and the receiver by using emails and other communicating modes. In this work, an XOR based multi secret sharing is proposed to send images from the source to the destination in a secured way. This method eliminates the fundamental safety challenges of VC which is similar to secondary use of code book, random split patterns, expansion of pixels in collective and enhanced images, lossy recovery of secret images and limitation on number of shares. The proposed method is n out of n multi secret sharing method. Broadcast of several secret images at the same time is accomplished through this planned project. The secret picture can be uncovered only when each and every one of the n shares are accepted by the receiver and decrypted. Master share is formed at time of encryption by using a secret key and can be regenerated by using the same secret key at the instance of decryption. Experimental results show that the pixel standards of the secret images received at the destination is very elevated when compared to the available methodologies.