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A Hybrid System for Securing Data Communication

This paper presents a One-Time Pad (OTP) encryption and a genetic algorithm (GA) audio steganography, respectively. In the proposed scheme, genetic algorithm is used for both encryption and steganography. In the encryption process, the key is randomly generated using genetic algorithm. The generated key is used as a key for the One-Time Pad algorithm. Then, the encrypted message is embedded in audio in the best position for embedding using signal-to-noise ratio (SNR) in genetic algorithm fitness function. Results had been discussed for the proposed scheme. It dissolves the drawbacks of key generating and distribution for One-Time Pad by using genetic algorithm. The proposed method satisfies the main steganography requirements pointed in perceptual transparency, hidden data capacity and robustness. Experimental results had been made, namely text analysis, waveform analysis and signal-to-noise ratio. Besides, a comparison of SNR for the proposed method withsome known algorithm. All are to indicate that the proposed method can significantly outperform many steganography techniques in terms of security and audio quality.