Abstract
This paper presents a chaos-based audio steganography and cryptography method that is based on Least Significant Bit (LSB) and one-time pad, respectively. In the proposed scheme, two chaotic maps were used, Piecewise Linear Chaotic Map (PWLCM) and logistic map for encryption and steganography, respectively. For encryption, a quantized generated chaotic sequence of PWLCM is used as key for one-time pad algorithm. For message hiding, a chaotic sequence is generated by the logistic map and ordered ascendingly or descendingly. Then, the encrypted data are embedded based on the indices for the ordered sequence of the host audio LSB’s samples. An analysis is discussed for the proposed scheme. It overcomes the drawbacks of key generation and distribution for one-time pad by using the chaotic maps. The proposed method satisfies the main requirements of steganography, perceptual transparency, capacity of hidden data and robustness. Experimental results were made, waveform analysis and signal-to-noise ratio, which indicated that the stego audio has high quality. The analysis demonstrates the efficiency of the proposed method, and so it can be applied to secure communications.
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Acknowledgment
This research was supported by the University of Khartoum and the Nile Center for Technology Research.
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Alwahbani, S.M.H., Elshoush, H.T.I. (2018). Chaos-Based Audio Steganography and Cryptography Using LSB Method and One-Time Pad. In: Bi, Y., Kapoor, S., Bhatia, R. (eds) Proceedings of SAI Intelligent Systems Conference (IntelliSys) 2016. IntelliSys 2016. Lecture Notes in Networks and Systems, vol 16. Springer, Cham. https://doi.org/10.1007/978-3-319-56991-8_54
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