Abstract
Steganography is the art of concealing a message within an unremarkable cover media in order to avoid detection. This paper proposes using both cryptography for scrambling the secret message and steganography techniques to provide a more secure communication. In this paper a cryptographic scheme employing AES–128 is first applied to the secret message in order to add an extra layer of security. Then, an audio cover file is used in the steganographic layer. The scrambled message is embedded using Least Significant Bit (LSB) of the audio file using a Tan Logistic Map generated Sequence. The metrics used to evaluate the performance of the algorithm are hearing test, mean square error (MSE), Peak signal to noise ratio (PSNR) and waveform plots.
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