An Efficient Audio Encryption Scheme Based on Finite Fields

Abstract

Finite fields are well-studied algebraic structures with enormous efficient properties which have applications in the fields of cryptology and coding theory. In this study, we proposed a lossless binary Galois field extension-based efficient algorithm for digital audio encryption. The proposed architecture hired a special type of curve in the diffusion module which depends on efficient elliptic curve arithmetic operations. So, it generates good quality pseudo-random numbers (PRN) and with slight computational efforts, it produces optimum diffusion in the encrypted audio files. For the confusion module, a novel construction mechanism of block cipher has been employed which includes prominent arithmetic operations of binary Galois field inversion and multiplication operations. The suggested scheme generates multiple substitution boxes (S-boxes) by using a higher-order Galois field. Thus, the replacement with multiple S-boxes generates effective perplexity in the data and provides additional security to the ciphered audio. The investigational outcomes through different analyses and time complexity demonstrated the ability of the technique to counter various attacks. Furthermore, as a consequence of a rapid and simple application of the binary finite field in hardware and software, the proposed scheme is more appropriate to be applied for data security.

An Audio Encryption Scheme Based on Empirical Mode Decomposition and 2D Cosine Logistic Map

“…In this study, we chose random 50000 pairs of adjacent samples from the original and encrypted audio to estimate the correlation between nearby samples. The correlation of the -0.011358 Ref [6] 1.000000 0.035300 Ref [7] 0.888833 0.000766 Ref [8] 0.965575 0.002262 Ref [18] 0.971000 -0.002600 Ref [26] 0.998100 0.010400 Ref [27] 0.946400 0.003372 Ref [28] -0.000280 plaintext and ciphertext is given in Table III. The table shows that the correlation of the original signals is strong (close to 1).…”

“…Ref [1] 99.5835 25.5850 Ref [6] 99.9985 -Ref [7] 100.0000 33.3578 Ref [8] 99.9893 30.3234 Ref [18] 99.9985 33.4000 Ref [26] 99.9494 33.1694 Ref [27] 99.9916 33.2057 Ref [28] 99.9948 35.5483…”

An Efficient Audio Encryption Scheme Based on Elliptic Curve over Finite Fields

“…In this study, they used three-dimensional (3-D) chaotic systems for encrypting various types of audio files. In [23], the author divided the audio data into two blocks, such as eight bits and seven bits. Further, they used substitution and permutation techniques to encrypt the data.…”

A technique for securing digital audio files based on rotation and XOR operations

“…Shah et al [2] in 2021 proposed a technique for the secure communication of digital audio files based on finite fields. The authors generated a sequence of pseudo-random numbers via an elliptic curve, which is used to scramble the samples of the plain audio files.…”