Multiuser wireless speech encryption using synchronized chaotic systems

This paper proposes a new and efficient chaos-based cryptosystem for multiuser speech encryption. In this regards, Chua chaotic systems are added to the transmitters and receiver to generate the chaotic encryption/decryption keys. The User, who has been selected to send the speech information, encrypts voice information by the chaotic keys and sends it to the base station. To encrypt the speech signal, combination of Chaotic Matrix Operation for...