A Voice Encryption Algorithm Based on Hyperchaos Mackey-Glass System

The secrecy capability usually decreases when using low dimensional chaotic sequence to encrypt signal,while system is not practical when using complicated composite chaotic sequence.Therefore,a new encryption algorithm is proposed,in which time-delay hyperchaos system based on parameter identification is adpoted,block data encryption is introduced,and a method of mapping to produce key word is applied.The system is simple and practical,and can effectively improve the chaos period behavior caused by disadvantage of limited precision and build up secure capability.