PROPOSED AES FOR IMAGE STEGANOGRAPHY IN DIFFERENT MEDIAS

Yojna Goyal, Manmohan Sharma

Abstract: In this paper, the author presents an enhanced version of modified AES for image-audio steganography technique. The proposed technique improves the security level of encryption and steganography process. Digital image processing is a wide area for research. Images are widely used today. Processing on images means some editing, preprocessing, restoration, compression, steganography and encryption. Steganography is concealing secret information into cover information. Encryption is mainly used for encoding the content of an image into something that cannot be understandable by unauthorized persons. Authorized are those who have the legal access to the content. Nowadays everyone is after information so; it becomes the need today to secure the (confidential) information. The proposed AES technique is an enhancement of modified AES method, which focuses on improving the security of steganography images. Modified AES is described in four steps: first step is key expansion, second is sub bytes modification, third is new shift rows and at last mixing of columns is applied to the matrix. This technique will provide better security and good quality encryption and decryption. Results shows that this method takes less time with the high quality of encrypted image

Keywords: Steganography, Modified Advance Encyption Standard(MAES), Proposed Advance Encyption Standard(PAES),Image Steganography , Image Encryption.

DOI: https://doi.org/10.15623/ijret.2014.0310061