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1.
Further results on the relation between nonlinearity and resiliency for Boolean functions
Enes Pašalić, Thomas Johansson, 1999, published scientific conference contribution (invited lecture)

Abstract: A good design of a Boolean function used in a stream cipher requires that the function satisfies certain criteria in order to resist different attacks. In this paper we study the tradeoff between two such criteria, the nonlinearity and the resiliency. The results are twofold. Firstly, we establish the maximum nonlinearity for a fixed resiliency in certain cases. Secondly, we present a simple search algorithm for finding Boolean functions with good nonlinearity and some fixed resiliency.
Found in: ključnih besedah
Summary of found: ...Boolean functions, cryptography, optimisation, search problems, stream cipher, attacks, maximum...
Keywords: Boolean functions, cryptography, optimisation, search problems, stream cipher, attacks, maximum nonlinearity, search algorithm, fixed resiliency
Published: 15.10.2013; Views: 1423; Downloads: 70
URL Full text (0,00 KB)

2.
Collisions for variants of the BLAKE hash function
Janoš Vidali, Peter Nose, Enes Pašalić, 2010, original scientific article

Found in: ključnih besedah
Summary of found: ...BLAKE, BLOKE, BRAKE, collision, cryptography, fixed point, hash functions, ...
Keywords: BLAKE, BLOKE, BRAKE, collision, cryptography, fixed point, hash functions
Published: 15.10.2013; Views: 1600; Downloads: 32
URL Full text (0,00 KB)

3.
On cryptographically significant mappings over GF(2 [sup] n)
Enes Pašalić, 2008, published scientific conference contribution

Abstract: In this paper we investigate the algebraic properties of important cryptographic primitives called substitution boxes (S-boxes). An S-box is a mapping that takes ▫$n$▫ binary inputs whose image is a binary ▫$m$▫-tuple; therefore it is represented as ▫$F:\text{GF}(2)^n \rightarrow \text{GF}(2)^m$▫. One of the most important cryptographic applications is the case ▫$n = m$▫, thus the S-box may be viewed as a function over ▫$\text{GF}(2^n)$▫. We show that certain classes of functions over ▫$\text{GF}(2^n)$▫ do not possess a cryptographic property known as APN (AlmostPerfect Nonlinear) permutations. On the other hand, when ▫$n$▫ is odd, an infinite class of APN permutations may be derived in a recursive manner, that is starting with a specific APN permutation on ▫$\text{GF}(2^k), k$▫ odd, APN permutations are derived over ▫$\text{GF}(2^{k+2i})$▫ for any ▫$i \geq 1$▫. Some theoretical results related to permutation polynomials and algebraic properties of the functions in the ring ▫$\text{GF}(q)[x,y]$▫ are also presented. For sparse polynomials over the field ▫$\text{GF}(2^n)$▫, an efficient algorithm for finding low degree I/O equations is proposed.
Found in: ključnih besedah
Summary of found: ...cryptoanalysis, cryptography, permutation polynomials, power mappings, APN functions, S-box,...
Keywords: cryptoanalysis, cryptography, permutation polynomials, power mappings, APN functions, S-box, CCZ-equivalence, algebraic properties
Published: 15.10.2013; Views: 1437; Downloads: 27
URL Full text (0,00 KB)

4.
Selected topics in cryptography, solved exam problems
Enes Pašalić, 2013, other educational material

Found in: ključnih besedah
Summary of found: Zadetek v naslovu
Keywords: cryptography, cipher, encryption, cryptosystem
Published: 15.10.2013; Views: 2145; Downloads: 50
URL Full text (0,00 KB)
This document has more files! More...

5.
Corrigendum to "A note on nonexistence of vectorial bent functions with binomial trace representation in the PS[sup]- class" [Information Processing Letters 115 (2) (2015) 139-140]
Enes Pašalić, 2015, other component parts

Found in: ključnih besedah
Summary of found: ...cryptography, vectorial bent funtions, trace functions, binomial bent...
Keywords: cryptography, vectorial bent funtions, trace functions, binomial bent functions
Published: 15.10.2015; Views: 1032; Downloads: 63
URL Full text (0,00 KB)

6.
A note on nonexistence of vectorial bent functions with binomial trace representation in the PS[sup]- class
Enes Pašalić, 2015, short scientific article

Found in: ključnih besedah
Summary of found: ...cryptography, vectorial bent funtions, trace functions, binomial bent...
Keywords: cryptography, vectorial bent funtions, trace functions, binomial bent functions
Published: 15.10.2015; Views: 956; Downloads: 60
URL Full text (0,00 KB)

7.
Vectorial quadratic bent functions as a product of two linearized polynomials
Samed Bajrić, 2015, published scientific conference contribution abstract

Found in: ključnih besedah
Summary of found: ...cryptography, Boolean functions, CCZ inequivalence, ...
Keywords: cryptography, Boolean functions, CCZ inequivalence
Published: 08.08.2016; Views: 921; Downloads: 10
URL Full text (0,00 KB)

8.
Design methods for semi-bent functions
Enes Pašalić, Sugata Gangopadhyay, WeiGuo Zhang, Samed Bajrić, 2019, original scientific article

Abstract: Semi-bent functions play an important role in the construction of orthogonal variable spreading factor codes used in code-division multiple-access (CDMA) systems as well as in certain cryptographic applications. In this article we provide several infinite classes of semi-bent functions, where each class is characterized by either a different decomposition of such a function with respect to the Walsh spectra of its subfunctions, or by the method used for its derivation. In particular, we also give the exact number of possibilities of decomposing bent functions, in a subclass of the Maiorana-McFarland class.
Found in: ključnih besedah
Summary of found: ...cryptography, Boolean functions, bent functions, semi-bent functions, derivatives...
Keywords: cryptography, Boolean functions, bent functions, semi-bent functions, derivatives
Published: 19.12.2018; Views: 1025; Downloads: 104
URL Full text (0,00 KB)

9.
New second-order threshold implementation of AES
Yongzhuang Wei, Fu Yao, Enes Pašalić, An Wang, 2019, original scientific article

Found in: ključnih besedah
Summary of found: ...cryptography, AES block cipher, protection against side-channel attacks...
Keywords: cryptography, AES block cipher, protection against side-channel attacks
Published: 13.02.2019; Views: 377; Downloads: 56
URL Full text (0,00 KB)

10.
Guess and determine cryptanalysis with variable sampling and its applications
Samir Hodžić, Enes Pašalić, Yongzhuang Wei, 2019, original scientific article

Found in: ključnih besedah
Summary of found: ...sampling methods, nonlinear filters, cryptography...
Keywords: sampling methods, nonlinear filters, cryptography
Published: 06.05.2020; Views: 41; Downloads: 4
URL Full text (0,00 KB)

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