1 citations · 1 across the 1 of their papers we have counts for
3 papers
cs.CR2015★ 1 cited
Cryptanalysis of some protocols using matrices over group rings
Mohammad Eftekhari
We address a cryptanalysis of two protocols based on the supposed difficulty of discrete logarithm problem on (semi) groups of matrices over a group ring. We can find the secret ke…
cs.CR2012
Cryptanalysis and Improvements on Some Graph-based Authentication Schemes
Mohammad Eftekhari, Herish Abdullah
In 2010, Grigoriev and Shpilrain, introduced some graph-based authentication schemes. We present a cryptanalysis of some of these protocols, and introduce some new schemes to fix t…
cs.CR2012
A Diffie-Hellman Key Exchange Using Matrices Over Non Commutative Rings
Mohammad Eftekhari
We consider a key exchange procedure whose security is based on the difficulty of computing discrete logarithms in a group, and where exponentiation is hidden by a conjugation. We…