A Review on Chaotic Cryptosystems for Digital Speech Communication

Abstract

 Nowadays, communication via multimedia has become very prevalent and this requires protecting it from attackers and transmitting it securely to achieve reliability. Encryption and decryption techniques are helpful to provide effective security for speech signals to ensure that these signals are transmitted with secure data and prevent third parties or the public from reading private messages.

A chaotic system is the application of the mathematical chaos theory to the practice of cryptography. Because of the sensitivity of a chaotic system to the initial condition and random properties make it suitable for encrypting multimedia. 

 In this review paper, some chaotic speech signal algorithms are reviewed. The comparison and reports of analysis are explained to clarify the performance of the algorithm to encrypt original signals and recover them by using the decryption method.