A Novel Scrambling Algorithm for Bio-Data Hiding Technique

In this paper we will overview the use of data hiding techniques in digital images. In particular we will describe how one can use steganography to hide biometric information in a digital image. This proposed technique proposes a quite simple solution for inserting a secure authentication watermarking in dispersed-dot halftone images. This technique explain how, the hidden biometric data are extracted accurately from the carrier image using a secret key and describe how it can be applied to any kind of binary images including clustered-dot halftones. Furthermore, this technique explains how data are hidden in the host image in an adaptive way to minimize possible degradations to that image. The proposed technique not only provides a better way for embedding large amounts of data into cover images with imperceptions, but also offers an easy way to accomplish secrecy. This method provides better results as compared to LSB replacement method where the distortions are spread all over the image.