The Frequency Theoretic Estimation of non-Linear Key Generator Sequences


The Randomness is one of the basic criterions to measure Key GeneratorEfficiency. The key generator depends basically on Linear FeedBack ShiftRegister which is considered as one of the basic units of Stream Cipher Systems.In this paper, the frequency postulate of Randomness criteria is calculatedtheoretically for non-linear key generator before it be implemented or constructed(software or hardware), this procedure save time and costs. Two non-linear keygenerators are chosen to apply the theoretical studies; these key generators are theProduct and Brüer.