Secure Data Transmission through Digital Protection Wall based on RGB Color Model in Wireless Network

Wireless communication provides the mean of connectivity to everyone, everywhere and need to have more attention on security. The secrecy and security of information has always been important to the people whenever it come to confidential data. Today there is advancement in internet technology and there has been increase use of text and multimedia data transfer over internet. The paper suggests to provide an additional layer of security to secrete data transmission, which hides the confidential information within carrier. The carrier used is the images that can hide secret information within the region of image. The paper proposed a method of half toning visual cryptography technique with digital protection wall. It improves thee perceptual quality as well as capacity of carrier by considering higher LSB layer for hiding secret information and replacing RGB component bit with secret information. The data is extracted simply by using reverse algorithm and the capacity, imperceptibility is compared by using various factors like cross correlation, MS error, peak to signal noise ratio. The suggested protection wall is flexible so that carrier can hide the data within the protected area and shall protect from unauthorized user which will be known to receiver only.