Chaos based speech encryption using modified Henon map

Security is one of the crucial requirements of the multimedia communication which can be achieved by using encryption. Encryption algorithms based on chaos generally satisfy the basic requirements of the cryptosystem such as simplicity, high sensitivity, fast speed, high security etc. In this paper, chaos based speech encryption algorithm is proposed which employs modified Henon map and sine map. The modified Henon map exhibits broad array of chaotic regime when compared to Henon map. The algorithm uses two primitive operations of cryptography such as confusion and diffusion. In order to verify the encryption capability of the algorithm, different speech signals are considered. The performance of the algorithm is assessed through security analysis. The results show that the algorithm can be used in reliable transmission of speech signals.