2 papers
math.NT2020
Density of the "quasi -rank Artin problem"
Herish Abdullah, Andam Ali Mustafa, Francesco Pappalardi
For a given finitely generated multiplicative subgroup of the rationals which possibly contain negative numbers, we derive, subject to GRH, formulas for the densities of primes for…
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…