Generation and SL_SVM prediction of digital chaotic key sequence based on double K-L transform

This paper proposes the double K-L transform method for Logistic 0/1 sequence, then predicts and analyses original Logistic sequence and Logistic sequence after double K-L transform by using SL_SVM(Least Square Support Vector Machine). Simulation results show that this kind of key sequence has the unpredictability, the period and the complexity of the binary double K-L transform logistic sequence are larger than original logistic 0/1 sequence, so it can be applied safely to the encryption system.