46 citations · 136 across the 11 of their papers we have counts for
3 papers · 1 filter
A Note on Fuzzy Automorphism and Inner Automorphism of Groups
Shiv Narain, Sunil Kumar, Sandeep Kumar +1
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…
Group ring based public key cryptosystems
Gaurav Mittal, Sunil Kumar, Shiv Narain +1
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…
A Vector Space Approach to Generate Dynamic Keys for Hill Cipher
Sunil Kumar, Sandeep Kumar, Gaurav Mittal +1
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-plainte…