6 citations · 7 across the 2 of their papers we have counts for
4 papers
A CCA secure cryptosystem using matrices over group rings
Delaram Kahrobaei, Charalambos Koupparis, Vladimir Shpilrain
We propose a cryptosystem based on matrices over group rings and claim that it is secure against adaptive chosen ciphertext attack.
Public key exchange using semidirect product of (semi)groups
Maggie Habeeb, Delaram Kahrobaei, Charalambos Koupparis +1
In this paper, we describe a brand new key exchange protocol based on a semidirect product of (semi)groups (more specifically, on extension of a (semi)group by automorphisms), and…
Public Key Exchange Using Matrices Over Group Rings
Delaram Kahrobaei, Charalambos Koupparis, Vladimir Shpilrain
We offer a public key exchange protocol in the spirit of Diffie-Hellman, but we use (small) matrices over a group ring of a (small) symmetric group as the platform. This "nested st…
Non-commutative Digital Signatures
Delaram Kahrobaei, Charalambos Koupparis
The objective of this work is to survey several digital signatures proposed in the last decade using non-commutative groups and rings and propose a digital signature using non-comm…