A Comparative Study of Audio Steganography Schemes
Farah Hemeida, Wassim Alexan, Salma Mamdouh · International Journal of Computing and Digital Systems · 2021
Steganography conceals the existence of secret information, while cryptography hides the meaning of the confidential information.Therefore, combining these two can provide a secure communication between a sender and a receiver.This article proposes a double-layer message security scheme where cryptography is the first layer and steganography is the second layer.AES-256, Blowfish, or a Logistic map is used in the cryptography layer.The LSB substitution technique is used for the steganography layer to embed a secret message inside cover audio.The LSB substitution technique is applied by alternating between the left and the right channels, respectively.Performance of the proposed schemes is evaluated in terms of a hearing test, running time, embedding capacity, waveform plots, as well as a large number of statistical, time-domain, and frequency-domain metrics.Furthermore, a comparison between the proposed scheme using AES-256 and its counterparts from the literature is also provided.The numerical results show that the proposed schemes exhibit very good performance.