Výsledky vyhledávání - "Narain, Shiv"

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A Note on Fuzzy Automorphism and Inner Automorphism of Groups

Autor: Narain, Shiv, Kumar, Sunil, Kumar, Sandeep, Mittal, Gaurav

The fuzzification of classical set theory came into existence when Zadeh [1] laid down the concept of a fuzzy set as a generalization of a crisp set. The objective of this paper is to extend the concept of fuzzy endomorphism to fuzzy automorphism. No

Externí odkaz: http://arxiv.org/abs/1909.11184

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Group ring based public key cryptosystems

Autor: Mittal, Gaurav, Kumar, Sunil, Narain, Shiv, Kumar, Sandeep

Publikováno v: Journal of Discrete Mathematical Sciences and Cryptography, 2021

In this paper, we propose two cryptosystems based on group rings and existing cryptosystem. First one is Elliptic ElGamal type group ring public key cryptosystem whose security is greater than security of cryptosystems based on elliptic curves discre

Externí odkaz: http://arxiv.org/abs/1909.07262

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A Vector Space Approach to Generate Dynamic Keys for Hill Cipher

Autor: Kumar, Sunil, Kumar, Sandeep, Mittal, Gaurav, Narain, Shiv

In this paper, a variant of the Hill cipher is proposed. In the classical Hill cipher, an invertible matrix is used for encryption but the scheme is vulnerable to the known-plaintext attack which can reveal the matrix. In our proposed cryptosystem, e

Externí odkaz: http://arxiv.org/abs/1909.06781

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