CRYPTOGRAPHIC IMAGE STEGANOGRAPHY FOR DATA SECURITY

Since the rise of the Internet one of the most important factors of information technology and communication has been the security of information.The growing possibilities of modern communications need the special means of security especially on computer network. The network security is becoming more important as the number of data being exchanged on the internet increases. Therefore, the confidentiality and data integrity are required to protect against unauthorized access and use. Work in this paper provide security to the data by using Cryptographic Image Steganography by use of cover as an image. Technique which embeds the message in a subset of the LSB plane of the image. An image is generally not visually affected when its least significant bit plane is changed, basic Steganography for hiding plain text, Steganography plus Cryptography to convert plain text into cipher text and send, LSB and Palette Based Images to add new colors which are visually similar to the existing colors in the palette. Here grayscale image as well as colour image has been used.This work ensures that no valuable information is lost and the data has been transmitted as well as recovered againsafely.