Chaotic Audio Encryption and Decryption Using Logistic Map

Chaotic audio encryption and decryption using the logistic map offer a promising avenue for enhancing the security of audio data through the utilization of chaotic dynamics and non-linear cryptography techniques. This paper uses the SHA 256 algorithm, a secure hashing algorithm that provides 256 bits (32 bytes of string) followed by a 3D logistic map, which is the encryption process. The end has a high-security 1D logistic map used for the output of the 3D map. Discrete Wavelet Transform (DWT) and Inverse Discrete Wavelet Transform (IDWT) are introduced to increase the timing efficiency of the process. As a result, for the proposed method, the peak signal-to-noise ratio (PSNR), correlation, time required for encryption and decryption, histogram, and spectrogram of input, encrypted and decrypted various audio signals have been measured and tabulated for performance analysis. The analysis shows that the proposed methodology works appropriately and efficiently.