Voice Encryption using Chaotic Signal

The history of voice encryption dates back to the world war II when secure communication was used. During that period, noise was added to the voice signal in order to prevent data breach. Due to advancements in the field of internet, the risk of data breach is ever increasing. This in turn increases the need for secure data transmission. In recent decades, cyber security has been used to shield Internet data from adversaries. This has hence made randomness in data processing an essential part of the security. For a number of years, researchers and scientists have been interested in the field of randomness and chaos. The randomness of the data can be implemented using chaos theory. For voice encryption and decryption, this report uses chaotic circuits. Bhalekar-Gejji system has been used here as the master for encryption and Chen system has been used as the slave. The slave follows the master when the controller is turned on and hence the decrypted voice signal is obtained back. This model ensures secure voice transmission.