Proposed System for data hiding using Cryptography and Steganography Proposed System for data hiding using Cryptography and Steganography

TL;DR

This paper presents an integrated system combining AES cryptography and steganography in the frequency domain, utilizing DCT and secret keys to enhance data hiding security.

Contribution

It introduces a novel approach that combines cryptography and steganography with an enhanced security module using DCT and secret keys.

Findings

High security due to combined cryptography and steganography techniques

Effective data hiding in DCT coefficients of images

Use of secret keys enhances system security

Abstract

Steganography and Cryptography are two popular ways of sending vital information in a secret way. One hides the existence of the message and the other distorts the message itself. There are many cryptography techniques available; among them AES is one of the most powerful techniques. In Steganography we have various techniques in different domains like spatial domain, frequency domain etc. to hide the message. It is very difficult to detect hidden message in frequency domain and for this domain we use various transformations like DCT, FFT and Wavelets etc. In this project we are developing a system where we develop a new technique in which Cryptography and Steganography are used as integrated part along with newly developed enhanced security module. In Cryptography we are using AES algorithm to encrypt a message and a part of the message is hidden in DCT of an image; remaining part of the message is used to generate two secret keys which make this system highly secured. Keyword: Cryptography, Steganography, Stego- image, Threshold Value, DCT Coefficient