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Modifications of bijective S-Boxes with linear structures
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en
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9
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Cryptography and Communications, Volume 15, issue 3, pp. 617-625
Abstract
Various systematic modifications of vectorial Boolean functions have been used for finding new previously unknown classes of S-boxes with good or even optimal differential uniformity and nonlinearity. In this paper, a new general modification method is given that preserves the bijectivity property of the function in case the inverse of the function admits a linear structure. A previously known construction of such a modification based on bijective Gold functions in odd dimension is a special case of the new method.
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Publisher Copyright: © 2023, The Author(s).
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Nyberg, K 2023, 'Modifications of bijective S-Boxes with linear structures', Cryptography and Communications, vol. 15, no. 3, pp. 617-625. https://doi.org/10.1007/s12095-023-00631-9