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Constructions of Almost Optimal Resilient Boolean Functions on Large Even Number of Variables

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2 Author(s)
WeiGuo Zhang ; ISN Lab., Xidian Univ., Xi'an, China ; GuoZhen Xiao

In this paper, a technique on constructing nonlinear resilient Boolean functions is described. By using several sets of disjoint spectra functions on a small number of variables, an almost optimal resilient function on a large even number of variables can be constructed. It is shown that given any m, one can construct infinitely many re-variable (n even), m-resilient functions with nonlinearity > 2n-1 - 2n-2. A large class of highly nonlinear resilient functions which were not known are obtained. Then one method to optimize the degree of the constructed functions is proposed. Last, an improved version of the main construction is given.

Published in:

IEEE Transactions on Information Theory  (Volume:55 ,  Issue: 12 )