Abstract
In this paper we consider the generalized nonlinearity of Boolean functions. First we characterize n-variable Boolean functions f : GF(2n) ? GF(2) such that f(xc) = f(x) for any c coprime to 2n-1, where c is a cyclotomic coset leader modulo 2n-1. This guarantees that the generalized nonlinearity of these functions are same as their nonlinearity itself. Boolean functions with very high generalized nonlinearity have been constructed by Youssef and Gong in 2001 which uses repetition of same binary string. Here we study the trace representation for this set of functions. Further we discuss the definition of generalized nonlinearity in terms of standard truth table realization of a Boolean function and raise important issues in this direction.
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Gangopadhyay, S., Maitra, S. (2002). Further Results Related to Generalized Nonlinearity. In: Menezes, A., Sarkar, P. (eds) Progress in Cryptology — INDOCRYPT 2002. INDOCRYPT 2002. Lecture Notes in Computer Science, vol 2551. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36231-2_21
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DOI: https://doi.org/10.1007/3-540-36231-2_21
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