Abstract Securing real-time audio communication is crucial among encryption techniques, especially as advanced networking technologies like 5G become growing in popularity. Although very secure, traditional encryption techniques like Advanced Encryption Standard (AES) have a high computational complexity and latency, which makes them inappropriate for applications that require immediate access. This paper focuses on the ChaCha20 encryption algorithm, which is a lightweight and efficient stream cipher that offers both strong security and high performance. Unlike block ciphers, ChaCha20 uses simple XOR operations and efficient keystream generation to ensure low latency and high throughput, which are critical for real-time audio encryption. In this paper ChaCha20 key generation, encryption, and decryption of audio data is implemented and its performance is analysed and compared with RSA, AES algorithms.
Rajesh et al. (Mon,) studied this question.