KOZINA, G. L.; SAVCHENKO, Y. V.; VOSKOBOINYK, V. O.; PROKOPOVICH-TKACHENKO, D. I.; KATSIUBA, V. V. MATHEMATICAL APPROACH TO IMPROVING THE PERFORMANCE OF THE PROGRAMMED IMPLEMENTATION OF THE SM4 CRYPTOALGORITHM. Systems and Technologies, v. 68, n. 2, p. 78-85, 17 Dec. 2024.