Results 21 to 30 of about 950 (154)
Algebraic Side Channel Attack on Trivium and Grain Ciphers
IEEE Access, 2017 Solving a system of multivariate quadratic equations obtained through algebraic cryptanalysis is a nondeterministic polynomial time-complete problem. Owing to the trend of stream ciphers based on nonlinear update, the success of algebraic attacks has ...
Asif Raza Kazmi +4 more
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An algorithm for constructing S-boxes for block symmetric encryption
Universal Journal of Mathematics and Applications, 2018 This article presents an algorithm for the generation of S-boxes with the maximum algebraic immunity and high nonlinearity. The algorithm is founded method of the permutation of output element of S-box. On basis of the proposed method, $S(8\times 8)$-box
Alijon Bozorbayevicha Sattarov +1 more
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Algebraic Description and Simultaneous Linear Approximations of Addition in Snow 2.0. [PDF]
, 2008 In this paper we analyse the algebraic properties over the field GF(2) of the addition modulo 2pn. We look at implicit quadratic equations describing this operation, and at probabilistic conditional linear equations.
Nicolas T. Courtois +3 more
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A White-Box Masking Scheme Resisting Computational and Algebraic Attacks
Transactions on Cryptographic Hardware and Embedded Systems, 2021 White-box cryptography attempts to protect cryptographic secrets in pure software implementations. Due to their high utility, white-box cryptosystems (WBC) are deployed by the industry even though the security of these constructions is not well defined ...
Okan Seker +2 more
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Security analysis of an encryption scheme based on nonpositional polynomial notations
Open Engineering, 2016 The aim of the research was to conduct a cryptographic analysis of an encryption scheme developed on the basis of nonpositional polynomial notations to estimate the algorithm strength. Nonpositional polynomial notations (NPNs) are residue number systems (
Kapalova Nursulu +1 more
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Using Linearizing Sets to Solve Multivariate Quadratic Equations in Algebraic Cryptanalysis
IEEE Access, 2023 In this paper we describe a class of cryptographic guess-and-determine attacks which is based on the notion of a linearizing set. A linearizing set-based attack is applied to a system of Multivariate Quadratic equations (MQ) over $GF(2)$ field, which ...
Alexander Semenov +3 more
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Algebraic Collision Attacks on Keccak
IACR Transactions on Symmetric Cryptology, 2021 In this paper, we analyze the collision resistance of the two smallest versions of Keccak which have a width of 200 and 400 bits respectively. We show that algebraic and linearization techniques can serve collision cryptanalysis by using some interesting
Rachelle Heim Boissier +2 more
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Generation of Nonlinear Substitutions by Simulated Annealing Algorithm
Information, 2023 The problem of nonlinear substitution generation (S-boxes) is investigated in many related works in symmetric key cryptography. In particular, the strength of symmetric ciphers to linear cryptanalysis is directly related to the nonlinearity of ...
Alexandr Kuznetsov +7 more
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Algebraic Analysis of a Simplified Encryption Algorithm GOST R 34.12-2015
Computation, 2020 In January 2016, a new standard for symmetric block encryption was established in the Russian Federation. The standard contains two encryption algorithms: Magma and Kuznyechik.
Evgenia Ishchukova +2 more
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Two Philosophies for Solving Non-linear Equations in Algebraic Cryptanalysis [PDF]
, 2017 Algebraic Cryptanalysis [45] is concerned with solving of particular systems of multivariate non-linear equations which occur in cryptanalysis. Many different methods for solving such problems have been proposed in cryptanalytic literature: XL and XSL ...
Nicolas T. Courtois, Courtois, NT
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