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A large family of Boolean functions

Huaning Liu, Min Zhang (2016)

Acta Arithmetica

In a series of papers many Boolean functions with good cryptographic properties were constructed using number-theoretic methods. We construct a large family of Boolean functions by using polynomials over finite fields, and study their cryptographic properties: maximum Fourier coefficient, nonlinearity, average sensitivity, sparsity, collision and avalanche effect.

A note on evaluations of some exponential sums

Marko J. Moisio (2000)

Acta Arithmetica

1. Introduction. The recent article [1] gives explicit evaluations for exponential sums of the form S ( a , p α + 1 ) : = x q χ ( a x p α + 1 ) where χ is a non-trivial additive character of the finite field q , q = p e odd, and a * q . In my dissertation [5], in particular in [4], I considered more generally the sums S(a,N) for all factors N of p α + 1 . The aim of the present note is to evaluate S(a,N) in a short way, following [4]. We note that our result is also valid for even q, and the technique used in our proof can also be used to evaluate certain...

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