On degeneration of correlation-immune functions
Chuan-Kun Wu, Guozhen Xiao, Xinmei Wang · 2002
It is known that correlation-immune (CI) functions can be used in nonlinear combining generators on resisting the correlation attack. But if a CI function f(x) of n variables is degeneratable, i.e., there exists a binary matrix D of order k/spl times/n (k>