Image encryption based on the composite chaotic system
Bo Gao · Electronic Instrumentation Customers · 2008
A new image encryption algorithm based on the composite chaotic system is proposed.Two discrete chaotic systems are combined to construct the system.Firstly,iterate the Henon map by the secret key to generate a chaotic sequence.Secondly,fix one parameter of the chaotic map with infinite collapse and use the mean value of the sequence as the other parameter to create a temporary sequence.Thirdly,transform the temporary sequence into binary.Finally,use the binary sequence to build the transfer matrix and the confusion matrix to encrypt the image.Simulation results and security analysis have shown that the proposed scheme has good encryption effect and high security.