Design and implementation of voice encryption system using XOR based on Hénon map

With the significant development in communication systems especially in the public channels through which our information travels, there are more increasing in the channels problems. Among these problems, the information security is the important object that should be enhanced. In this paper a security model based on chaotic system has been designed to be used to encrypt voice signal. An exclusive OR operation used between the digital input signal and chaotic map which is also convert to binary bits. The simulation results show that the Cpestral Distance Measure (CD) in the proposed system is increased by (4.5778) in comparing with the time domain scrambling. Also dlpc increased by (4.336) in comparing with time domain. The key space in the first two methods ADCs is 1.96 × 1064 × range of parameters, while in the third method is 3.8426 × 10128 × (range of parameters)2.