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Speech encryption based on hybrid chaotic key generator for AMR-WB G.722.2 codec

机译:基于混合混沌密钥发生器的AMR-WB G.722.2编解码器语音加密

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In recent years, chaos-based cryptosystems have drawn more and more attention in many disciplines in particular speech encryption. In this paper, we propose speech encryption scheme 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 algorithm 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.
机译:近年来,基于混沌的密码系统已在许多学科中引起越来越多的关注,尤其是语音加密。本文针对AMR-WB G.722.2编解码器,提出了一种基于混沌映射的语音加密方案。为了提高安全性,我们将logistic逻辑图和Hénon混沌映射相结合,以便对语音进行混洗和加扰,从而获得混合的混沌密钥生成器。通过语音质量的感知评估(PESQ)和增强的改进的吠声频谱失真(EMBSD)措施进行评估的拟议算法证实了拟议密码系统方案的效率。

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