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Вариации ортоморфизмов и псевдоадамаровых преобразований на неабелевой группе

Вариации ортоморфизмов и псевдоадамаровых преобразований на неабелевой группе

Abstract

В криптографии ортоморфизмы на абелевой группе используются как S-боксы в схемах Лея — Месси, квази-Фейстеля, в блочной шифрсистеме FOX, в режиме блочного шифрования Дэвиса — Мейера, а также в кодах аутентификации. В работе рассматриваются ортоморфизмы, полные преобразования и их вариации на конечной неабелевой группе (X, •) наложения ключа. В алгоритме блочного шифрования SAFER для обеспечения принципа рассеивания используется псевдоада- марово преобразование. Предложено десять аналогов псевдоадамарова преобразования, задаваемых подстановкой s на неабелевой группе (X, •). Доказано, что биективность аналогов псевдоадамарова преобразования равносильна справедливости следующего условия: подстановка s является ортоморфизмом, полным преобразованием или их вариацией.

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Keywords

преобразования, SAFER, ортоморфизм, блочное шифрование, неабелевы группы, алгоритмы шифрования

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green