A Image Encryption Algorithm Based on Hyperchaos M-G System
Fei Gao · Signal Processing · 2007
The secrecy capability usually decreases when using low dimension chaotic sequence to encrypt signal,while system is not practical and bad synchronization when using complicated composite chaotic sequence.Therefore,a new encryption algorithm was proposed.It adopted time-delay hyperchaos system based on parameter identification,introduced bit image encryption,and processed the plain text before encryption in order to make the image date fit M-G encryption system.The system was simple and practical,it needn' t chaos synchronization.Experimental results and theory analysis indicate that encryption effect is satisfactory.