ADVANCED SECURITY ENHANCEMENT OF DATA BEFORE DISTRIBUTION
Fiji Joseph, Sri Shakthi · 2015
Abstract — Security is an important issue in the field of communication. During storing or transmission of data we have to take care of the confidentiality. The proposed work mainly deals with data hiding to enhance the security of data transmitted in a network. The Steganography which hides the existence of the message and the Cryptography which distort the message are combined. It is mainly employed for sending vital information in a secret way. Here we are discussing Adaptive Pixel Value Differencing technique as image Steganographic scheme whereas Advanced Encryption Standard is discussed as the Cryptographic scheme to encrypt the message. In APVD the image is divided into blocks and then data will be hidden. If we use simple pixel value differencing as embedding algorithm then there is a possibility that the resultant stego image may exceed the grey scale range of 0 to 255.This can affect the quality of stego image which in turn causes the observer to identify that a hidden communication is happening. The main objective of this proposed work is to enhance the quality of stego image and to increase the embedding capacity.