A Visual Cryptography Scheme for User Authentication

Abstract

A new scheme for user authentication is proposed using visual cryptography and invisible digital watermarking. Visual cryptography which allows visual information to be encrypted in such a way that decryption becomes the job of the person to decrypt via a sight reading. In the proposed work, user signature will be embedded within the cover media. It may be text, images, audio, video etc. Here we used cover image for embedding data by using a single bit LSB watermark insertion algorithm. After that the image will be split into two shares. Shares will be later encrypted by using a Column Shift Permutation algorithm. Receiver will decrypt the shares using Column Shift Permutation algorithm. Shares are collected and stamp together by receiver to get cover image. Then signature will be de-embedded from the cover image. Data will be transfer using communication media. Image will be passed in more secure manner without any distortion. This method is very efficient and effective .The method can be implemented with minimum processing. This application used in customer identification in bank and in online voting.