A Novel Steganographic Scheme Based on Hash Function Coupled With AES Encryption
Rinu Tresa M J, Athira M Babu, T Sobha · Advanced Computing An International Journal · 2014
In the present scenario the use of images increased extremely in the cyber world so that we can easily transfer data with the help of these images in a secured way.Image steganography becomes important in this manner.Steganography and cryptography are the two techniques that are often confused with each other.The input and output of steganography looks alike, but for cryptography the output will be in an encrypted form which always draws attraction to the attacker.This paper combines both steganography and cryptography so that attacker doesn't know about the existence of message and the message itself is encrypted to ensure more security.The textual data entered by the user is encrypted using AES algorithm.After encryption, the encrypted data is stored in the colour image by using a hash based algorithm.Most of the steganographic algorithms available today is suitable for a specific image format and these algorithms suffers from poor quality of the embedded image.The proposed work does not corrupt the images quality in any form.The striking feature is that this algorithm is suitable for almost all image formats e.g.