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Алгебраический анализ стойкости криптографических систем защиты информации

Алгебраический анализ стойкости криптографических систем защиты информации

Abstract

The research of algebraic cryptanalysis method was carried out in this work. Systems of the equations for tables of various sizes of nonlinear transformations of substitution for simplified model of GOST28147-89 algorithm are received, also we solve a one of this systems by a XL method. During this work we produced a program, which has realised a generation and solving of system of equations describing nonlinear transformations of substitution. We analysed a nonlinear systems of equations and calculated a value of complexity of XL method for eight blocks of substitution.

В работе проведено исследование методов алгебраического криптоанализа. Получены системы уравнений для различных размеров таблиц нелинейных преобразований замены упрощенного алгоритма шифрования ГОСТ28147-89, а также выполнено решение одной из систем методом XL. В ходе работы программно реализован алгоритм генерации и решения системы уравнений для преобразований замены. Проведен анализ полученных нелинейных систем и выполнена оценка трудоемкости метода XL алгебраического криптоанализа для восьми блоков замены.

Keywords

АЛГЕБРАИЧЕСКИЙ КРИПТОАНАЛИЗ, XL МЕТОД, НЕЛИНЕЙНЫЕ ПРЕОБРАЗОВАНИЯ ЗАМЕНЫ, ЛИНЕАРИЗАЦИЯ НЕЛИНЕЙНЫХ СИСТЕМ, МЕТОД ИСКЛЮЧЕНИЯ ГАУССА, КРИПТОГРАФИЧЕСКИЙ КЛЮЧ, АЛГОРИТМ ШИФРОВАНИЯ ГОСТ28147-89

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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
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