Friday, 7 August 2020

Text Steganography by LSB substitution using genetic optimal key permutation MATLAB code

Hello, friends today I would like to post one project in the field of information security. The title of the project is Text Steganography by LSB substitution using genetic optimal key permutation. Data hiding techniques embed important data into multimedia data such as images, videos, or sounds. Digital images are considered good cover carriers because of their insensitivity to the human visual system. Watermarking and steganography are two major branches of information hiding technology. Each has its own specific characteristics. The MATLAB implementation of the project is shown in the following Youtube video. Just have a look.

YouTube Video of the Project: 


The least significant bit (LSB) embedding method is one of the most commonly used techniques; it targets the LSB's of the host image to hide the data. This paper deals with three main steganography challenges (i.e. capacity, imperceptibility, and security). This is achieved by hybrid data hiding scheme incorporates the LSB technique with a key-permutation method. The paper also proposes an optimal key permutation method using genetic algorithms for the best key selection. Both normal and optimized methods are tested with standard images, varying both data size as well as keyspace. Final experimental results show a decrement in computation time when increasing the number of keys, at the same time system security improves.


MATLAB Implementation of the Project:


Fig: MATLAB GUI of the Message Embedding Process

Fig: MATLAB GUI of the Message Extraction Process

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