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This article is cited in 1 scientific paper (total in 1 paper)
Computational methods in discrete mathematics
On differentials for the modification of the cipher Simon based on the Lai — Messi scheme
A. A. Belousovaab, N. N. Tokarevaba a Novosibirsk State University
b Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
Abstract:
We consider the block iterative cipher Simon based on the Feistel network and its modification based on the Lai — Messi scheme. Received estimates of differentials of the considered ciphers are compared. The results show that after $12$ rounds, estimate of the maximum probability of a differential for the modified cipher Simon $32/64$ without adding an orthomorphism is $2^{-24}$, and with the addition of orthomorphism is between $2^{-24}$ and $2^{-63}$, while the estimate of maximum probability for the original version is $2^{-36}$.
Keywords:
Lay — Massey scheme, Feistel network, differential cryptanalysis.
Citation:
A. A. Belousova, N. N. Tokareva, “On differentials for the modification of the cipher Simon based on the Lai — Messi scheme”, Prikl. Diskr. Mat. Suppl., 2020, no. 13, 119–121
Linking options:
https://www.mathnet.ru/eng/pdma515 https://www.mathnet.ru/eng/pdma/y2020/i13/p119
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Abstract page: | 130 | Full-text PDF : | 54 | References: | 25 |
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