Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Civino, Roberto"'
Autor:
Civino, Roberto, Fedele, Valerio
In a XOR-based alternating block cipher the plaintext is masked by a sequence of layers each performing distinct actions: a highly nonlinear permutation, a linear transformation, and the bitwise key addition. When assessing resistance against classic
Externí odkaz:
http://arxiv.org/abs/2404.09315
Civino et al.~(2019) have shown how some diffusion layers can expose a Substitution-Permutation Network to vulnerability from differential cryptanalysis when employing alternative operations coming from groups isomorphic to the translation group on t
Externí odkaz:
http://arxiv.org/abs/2403.20059
The use of alternative operations in differential cryptanalysis, or alternative notions of differentials, are lately receiving increasing attention. Recently, Civino et al. managed to design a block cipher which is secure w.r.t. classical differentia
Externí odkaz:
http://arxiv.org/abs/2401.04495
Given an integer $n$, we introduce the integral Lie ring of partitions with bounded maximal part, whose elements are in one-to-one correspondence to integer partitions with parts in $\{1,2,\dots, n-1\}$. Starting from an abelian subring, we recursive
Externí odkaz:
http://arxiv.org/abs/2303.05129
Recently Aragona et al. have introduced a chain of normalizers in a Sylow 2-subgroup of Sym(2^n), starting from an elementary abelian regular subgroup. They have shown that the indices of consecutive groups in the chain depend on the number of partit
Externí odkaz:
http://arxiv.org/abs/2301.06347
This paper completes the classification of maximal unrefinable partitions, extending a previous work of Aragona et al. devoted only to the case of triangular numbers. We show that the number of maximal unrefinable partitions of an integer coincides w
Externí odkaz:
http://arxiv.org/abs/2206.04261
Publikováno v:
Journal of Mathematical Cryptology, Vol 18, Iss 1, Pp 3-72 (2024)
The use of alternative operations in differential cryptanalysis, or alternative notions of differentials, is lately receiving increasing attention. Recently, Civino et al. managed to design a block cipher that is secure with respect to the classical
Externí odkaz:
https://doaj.org/article/722632af6747441195d21ab63776da93
Unrefinable partitions are a subset of partitions into distinct parts which satisfy an additional unrefinability property. More precisely, being an unrefinable partition means that none of the parts can be written as the sum of smaller integers witho
Externí odkaz:
http://arxiv.org/abs/2112.15096
A partition into distinct parts is refinable if one of its parts $a$ can be replaced by two different integers which do not belong to the partition and whose sum is $a$, and it is unrefinable otherwise. Clearly, the condition of being unrefinable imp
Externí odkaz:
http://arxiv.org/abs/2111.11084
Publikováno v:
Discrete Mathematics Letters, 2022, 8, pp. 72-77
In a recent paper on a study of the Sylow 2-subgroups of the symmetric group with 2^n elements it has been show that the growth of the first (n-2) consecutive indices of a certain normalizer chain is linked to the sequence of partitions of integers i
Externí odkaz:
http://arxiv.org/abs/2107.04666