With the increasing number of emerging robust networks, the challenges to design new
security protocols and techniques are never ending. With the enlargement of 5G paradigm …

Abstract Identity-based (ID-based) encryption is a very important cryptographic primitive. It is
advantageous over the conventional public key cryptosystems due to direct and easy …

Group signatures are a leading competing signature technique with a substantial amount of
research. With group settings, group signatures provide user anonymity. Any group member …

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 …

In this paper, we propose three digital signature schemes based on the algebraic structure
of group ring. The first scheme is a deterministic signature scheme, the second scheme is a …

In this paper, we propose two novel public-key cryptosystems by combining the well-known
NTRU public-key cryptosystem with the algebraic structure of group rings. We discuss the …

ElGamal Cryptosystem (EC) is a non-deterministic scheme which produces different outputs
for the same input, making the cryptosystem more secure. On the other hand, the efficiency …

We present a study on the use of Pell hyperbolas in cryptosystems with security based on
the discrete logarithm problem. Specifically, after introducing the group structure over …

ElGamal cryptosystem has emerged as one of the most important construction in Public Key
Cryptography (PKC) since Diffie-Hellman key exchange protocol was proposed. However …

Distributed Ledger Technologies (DLT), notably blockchain, have advanced significantly,
finding applications in various domains, including education, for enhanced transparency …