Secure Speech Transmission Using Chaos Encryption System for AMR-WB Codec
Messaouda Boumaraf, Fatiha Merazka · International Journal of Chaotic Computing · 2017
In recent years, the need for secured communication research based on Speech Coding with chaos cryptography has highly increased.Therefore, it is absolutely necessary to have secure systems to protect the transferred data against arbitrary intrusions.So, data encryption is an effective way to meet these requirements.In this paper, we propose a full and a partial speech encryption schemes based on chaos maps for AMR-WB G.722.2 Codec.To increase the security level, we combine chaos maps logistic and Hénon for shuffling and scrambling speech in order to have a hybrid chaotic key generator.The proposed algorithms evaluated with both Perceptual Evaluation of Speech Quality (PESQ) and Enhanced Modified Bark Spectral Distortion (EMBSD) measure confirm the efficiency of our proposed cryptosystem scheme.