Results 1 to 10 of about 194 (92)
A code-based hybrid signcryption scheme
Journal of Mathematical Cryptology, 2023 A key encapsulation mechanism (KEM{\mathsf{KEM}}) that takes as input an arbitrary string, i.e., a tag, is known as tag-KEM{\mathsf{KEM}}, while a scheme that combines signature and encryption is called signcryption.
Klamti Jean Belo, Hasan M. Anwarul
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On the efficiency of a general attack against the MOBS cryptosystem
Journal of Mathematical Cryptology, 2022 All instances of the semidirect key exchange protocol, a generalisation of the famous Diffie-Hellman key exchange protocol, satisfy the so-called telescoping equality; in some cases, this equality has been used to construct an attack.
Battarbee Christopher +3 more
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Reproducible families of codes and cryptographic applications
Journal of Mathematical Cryptology, 2021 Structured linear block codes such as cyclic, quasi-cyclic and quasi-dyadic codes have gained an increasing role in recent years both in the context of error control and in that of code-based cryptography.
Santini Paolo +2 more
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CHIMERA: Combining Ring-LWE-based Fully Homomorphic Encryption Schemes
Journal of Mathematical Cryptology, 2020 This paper proposes a practical hybrid solution for combining and switching between three popular Ring-LWE-based FHE schemes: TFHE, B/FV and HEAAN. This is achieved by first mapping the different plaintext spaces to a common algebraic structure and then ...
Boura Christina +3 more
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MAKE: A matrix action key exchange
Journal of Mathematical Cryptology, 2022 We offer a public key exchange protocol based on a semidirect product of two cyclic (semi)groups of matrices over Zp{{\mathbb{Z}}}_{p}. One of the (semi)groups is additive, and the other one is multiplicative.
Rahman Nael, Shpilrain Vladimir
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Pseudo-free families and cryptographic primitives
Journal of Mathematical Cryptology, 2022 In this article, we study the connections between pseudo-free families of computational Ω\Omega -algebras (in appropriate varieties of Ω\Omega -algebras for suitable finite sets Ω\Omega of finitary operation symbols) and certain standard cryptographic ...
Anokhin Mikhail
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Survey on SAP and its application in public-key cryptography
Journal of Mathematical Cryptology, 2020 The concept of the semigroup action problem (SAP) was first introduced by Monico in 2002. Monico explained in his paper that the discrete logarithm problem (DLP) can be generalized to SAP. After defining the action problem in a semigroup, the concept was
Goel Neha, Gupta Indivar, Dass B. K.
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Rigorous upper bounds on data complexities of block cipher cryptanalysis
Journal of Mathematical Cryptology, 2017 Statistical analysis of symmetric key attacks aims to obtain an expression for the data complexity which is the number of plaintext-ciphertext pairs needed to achieve the parameters of the attack. Existing statistical analyses invariably use some kind of
Samajder Subhabrata, Sarkar Palash
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Enhancing Goldreich, Goldwasser and Halevi’s scheme with intersecting lattices
Journal of Mathematical Cryptology, 2019 We present a technique to enhance the security of the Goldreich, Goldwasser and Halevi (GGH) scheme. The security of GGH has practically been broken by lattice reduction techniques.
Sipasseuth Arnaud +2 more
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MRHS solver based on linear algebra and exhaustive search
Journal of Mathematical Cryptology, 2018 We show how to build a binary matrix from the MRHS representation of a symmetric-key cipher. The matrix contains the cipher represented as an equation system and can be used to assess a cipher’s resistance against algebraic attacks.
Raddum Håvard, Zajac Pavol
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