摘要
鉴于语音信号的"即时性"特点,在分析了混沌掩盖、混沌调制进行加密利弊的基础上,构造了一种混沌切换加密方案,对语音进行了更安全有效地加密.计算仿真实现了对语音信号的加密,实验表明了此方法的可行性,并对其加密解密效果、抗破译能力、同步时间以及保密强度进行了分析和比较.
In view of the real-time property of speech, and based on the advantages and disadvantages of chaos masking, chaos modulation in speech encryption, a new kind of scheme for chaos switching encryption was con- structed to encrypt speech effectively. The computational approaches realized the encryption of speech, and the results verified the feasibility of the scheme. Meanwhile, the encryption and decryption affections, anti-attacking, synchronization time and cryptosystem security were analyzed and compared.
出处
《动力学与控制学报》
2008年第3期254-259,共6页
Journal of Dynamics and Control
基金
华北电力大学博士基金(200708)资助项目~~
关键词
Qi混沌系统
混沌加性加密
混沌乘性加密
混沌切换加密
Qi chaos switching system, chaotic additives encryption, encryption chaotic muhiplicative encryption, chaotic
