Abstract
Properties of round functions of block ciphers are investigated that characterize their practical resistance against bilinear cryptanalysis techniques. Upper estimates of imbalance of bilinear approximations are obtained for round functions of block ciphers with a modulo power-of-2 key adder, in particular, the encryption algorithms of GOST and “Kalina.”
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Translated from Kibernetika i Sistemnyi Analiz, No. 3, pp. 42–51, May–June 2010.
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Alekseychuk, A.N., Schevtsov, A.S. Upper estimates of imbalance of bilinear approximations for round functions of block ciphers. Cybern Syst Anal 46, 376–385 (2010). https://doi.org/10.1007/s10559-010-9213-2
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DOI: https://doi.org/10.1007/s10559-010-9213-2