Abstract
Securing data is an essential matter in communication systems, data must be protected from interceptors and eavesdroppers. In this paper, a hybrid system was produced to secure a plain text message encrypted with the Hill encryption method and embedded within an audio file in a random distribution using audio symbol sign to represent message bits. The audio file is restricted to be *.wav stereo file, Two secret keys are needed for this system encryption key and the seed of generating hiding positions. PSNR,MSE,SSIM are calculated between cover before and after embedding and the results reflected the imperceptibility requirement of the system. Also the elapsed time for securing messages was quite low for different sizes of text and the encryption process was less time than hiding.
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