The application research of hyperchaos encryption in security communications

Against the nature of hyperchaos dynamic system, a modified hyper-chaotic sequence encryption algorithm was given. This method used the dynamic system of TNC hyperchaos. And proved to have the effective ability of exhaustive attack and anti-nonlinear reorganization; used sub-Nyquist sampling interval to increase the key space, this method has the ability of anti-nonlinear reorganization attack; realized the algorithm´s encryption and decryption by using Matlab simulation platform and got some satisfactory results which make out that the arithmetic is faster and easier implementation by software, had a large key space and so on.