Security of Information Using Cryptography and Image Processing

Abstract: In this paper we propose a same technique of sending confidential information using encryption and data hiding concept with different encryption algorithms, that is for image encryption we use AES algorithm and for data encryption we use Twelve Square cipher substitution algorithm, and try to improve the security mechanism. With plain text data we also consider the confidential audio and video data for embedding purpose. This work also proposes a scheme for separable reversible data hiding in encrypted image which is remove the drawback of non separable reversible data hiding in encrypted image.