摘要
利用混沌系统广义同步定理,基于蔡电路系统构造了一个新的混沌系统,基于该系统设计了一个文本复合加密隐藏方案。该方案首先用复合系统产生的混沌码对明文加密,然后将密文隐藏到语音信号中。方案能够实现无失真解密。数值模拟显示新加密方案产生的混沌流具有良好的伪随机性。该方案对混沌系统的参数及初始条件极为敏感,表明该方案具有较高的安全性。数值模拟显示该方案能够有效地应用于网络通讯。
A new chaos system is established based on the theorem of generalized synchronization and Chua system.The chaos sequences generated via this system and Lorenz system has better pseudo-random properties.A message eneryption and hiding scheme is also established on the system and Lorenz system.The scheme is successful to encrypt and deerypt message.Ciphertexts are sensitive to the parameters and initial conditions of the chaos system.It shows that this scheme has good security.Numerical simulations show that our scheme is effective to be used in network communication.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第23期119-123,共5页
Computer Engineering and Applications
基金
国家自然科学基金(the National Natural Science Foundation of China under Grant No.70271068
No.60674095)
北京电子科技学院信息安全与保密重点实验室开放基金 (the Opening Research Fund for the Key Lab of Information Security and Secrecy at the Beijing Electonic Science and Technology Institute No.KYKF200605)
关键词
广义同步定理
加密隐藏方案
混沌码伪随机性
网络通讯
generalized synchronization theorem
eneryption and hiding scheme
pseudo-random properties of chaos sequence
network secure communication
