Results 91 to 100 of about 1,748,823 (282)

A Method for Specifying Complete Signature Randomization and an Algebraic Algorithm Based on It

open access: yesMathematics
To eliminate the limitations of signature randomization in known algebraic algorithms with a hidden group, the security of which is based on the computational complexity of solving large systems of power equations, a method for ensuring complete ...
Alexandr Moldovyan   +3 more
doaj   +1 more source

Algebraic Attacks on Summation Generators [PDF]

open access: yes, 2008
We apply the algebraic attacks on stream ciphers with memories to the summation generator. For a summation generator that uses $n$ LFSRs, the algebraic equation relating the key stream bits and LFSR output bits can be made to be of degree less than or ...
Jae Woo Han   +4 more
core  

Coexistence, crossover and extirpation in coalescent communities and ecotones

open access: yesOikos, EarlyView.
When two ecological communities come into contact, the strength of their mixing determines whether species coexist, extirpate, or extend their ranges. We present analytical formulas and simulations describing these transitions. Specifically, we derive abundance shifts upon community coalescence, identify the critical mixing strength leading to first ...
Martin Heidelman, Dervis Can Vural
wiley   +1 more source

An analysis of the RC4 family of stream ciphers against\ud algebraic attacks

open access: yes, 2010
To date, most applications of algebraic analysis and\ud attacks on stream ciphers are on those based on lin-\ud ear feedback shift registers (LFSRs). In this paper, we\ud extend algebraic analysis to non-LFSR based stream\ud ciphers.
Carter, Gary   +2 more
core  

Sliding Mode Control in Aerospace Applications: A Survey

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Algebraic side‐channel attacks on Trivium stream cipher

open access: yesIET Communications
Algebraic Side‐Channel Attacks (ASCAs), first proposed by Renauld and Standaert in 2009, are a potent cryptanalysis method against block ciphers. In this paper, the authors initially utilize ASCAs to analyze the security of the Trivium stream cipher ...
Wenlong Sun, Jie Guan
doaj   +1 more source

Algebraic Attacks on Stream Ciphers

open access: yes, 2004
. Due to their eciency, stream ciphers are widely used in practice (e.g., mobile phones) to ensure the secrecy of transmitted data. Modern cryptographic techniques made it possible to improve their resistance against well known attacks like correlation ...
Armknecht, Frederik, Frederik Armknecht
core  

Detecting General Algebraic Manipulation Attacks [PDF]

open access: yes, 2018
Algebraic manipulation detection codes are a class of error detecting codes which have found numerous applications in cryptography. In this paper we extend these codes to defeat general algebraic attacks - we call such codes general algebraic ...
Kim Ramchen
core  

Control Systems Design With Enlarged Stability Domains for Nonlinear Constrained Systems via Sum‐of‐Squares Optimization

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Designing safe control laws for nonlinear systems is challenging, especially when ensuring stability under actuator saturation and state constraints. A key aspect is embedding controllers with a Region of Attraction (ROA), which defines initial conditions guaranteeing convergence to a stable equilibrium point (EP).
Bhaskar Biswas   +3 more
wiley   +1 more source

A novel method for developing post-quantum cryptoschemes and a practical signature algorithm [PDF]

open access: yesApplied Computing and Informatics
Purpose – The practical purpose of this research is to propose a candidate for post-quantum signature standard that is free of significant drawback of the finalists of the NIST world competition, which consists in the large size of the signature and the ...
Nikolay Andreevich Moldovyan   +1 more
doaj   +1 more source

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