A novel approach to Digital Image Steganography of key-based encrypted text

摘要

Encryption is the method by which we can encode the intended piece of information in such a way that only the people whom we want to pass that information can understand its actual meaning. Digital Image Steganography the message is hidden in an image in such a way that the onlookers cannot even guess that it is not a normal image. Nowadays security is a vital issue while transmitting a message. So in this paper we have proposed a unique way of transmitting the message securely. First we have encrypted the message to an image which needs a secret key to be decrypted. Then we have hidden that image inside another image by steganographic approach. By this two level hiding we can ensure stronger security.