Cipher with improved dynamic indicators of the condition of a random substitution

Lisickiy, Konstantin; Dolgov, Viktor; Lisickaya, Iryna

doi:10.1109/infocommst.2017.8246425

Cited by 5 publications

(3 citation statements)

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“…From the previous results of determining the randomness of the considered cipher, we can conclude that the proposed construction of the cipher really allows to use in it random S-blocks without any reduction of strength [21,22,[36][37][38][39][40]. The algebraic properties of S-blocks of modern block ciphers are investigated in [23][24][25], their influence on sustainability to algebraic cryptanalysis is shown.…”

Section: Discussionmentioning

confidence: 91%

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Block Symmetric Cipher With Random S-Boxes

Lisickiy¹,

Dolgov²,

Lisickaya³

et al. 2019

IJC

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This paper describes a new 256-bit block symmetric substitution-permutation cipher, called managed substitution cipher. This is a cipher with single-layer permutated transformations in each cycle. The management of substituted transformations occur by including them in a chain so that the output value of the previous SL transform is fed to the input of the current fortified 32-bit substituted transformation (SL conversion) along with the current value of the input data block through the adder for modulo 2. This enables to activate almost all S-blocks of the second cycle and subsequent cycles and eventually improve the dynamic indicators of the arrival of the cipher to the state of random substitution. The results of the evaluation of randomness indicators and the possibility of using random S-blocks are given. It is shown that such construction of cycled function allows us to use random substitutions without any selection in a cipher without reducing its strength.

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Section: Discussionmentioning

confidence: 91%

“…As a conclusion, we should mention two more our works [39,40], which are devoted to the further development of this approach. Here we are talking about the improvement of existing designs of modern ciphers, based on using a new structure of the first cycle, constructed by using managed substitutions (enlarged S-blocks).…”

Section: Discussionmentioning

confidence: 95%

Block Symmetric Cipher With Random S-Boxes

Lisickiy¹,

Dolgov²,

Lisickaya³

et al. 2019

IJC

Self Cite

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“…The stream encryption of a long sequence has the most significant potential advantage over block cryptographic transformations [3,6,[19][20][21][22][23][24], which is essential for many applications [25][26][27][28][29][30][31][32][33][34][35][36][37].…”

Section: Performance Evaluationmentioning

confidence: 99%

Studies on Statistical Analysis and Performance Evaluation for Some Stream Ciphers

Gorbenko¹,

Кuznetsov²,

Gorbenko³

et al. 2019

IJC

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This paper presents the results of the comparative analysis of safety statistics and performance of encryption, the Strumok stream symmetric cipher (proposed for the national encryption standard of Ukraine) with other known cryptographic transformation algorithms, such as SALSA20, SNOW2.0, HC, AES with usages in stream mode, etc. They are accepted as national, international standards or are presented by the New European Schemes for Signatures, Integrity, and Encryptions (NESSI), Cryptography Research and Evaluation Committees (CRYPTREC) and others. The result of safety statistics is an analysis of the cryptographic properties of the output sequences using statistical test sets developed by the National Institute of Standards and Technology (NIST STS) and the DIEHARD tests. The result of the study of performance is the evaluation of the use of central processing unit (CPU) time to convert one octet of data to 64-bit computing platforms, following the test profile used in the eSTREAM contest.

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