1 citations · 2 across the 7 of their papers we have counts for
5 papers · 1 filter
Semigroup action based on skew polynomial evaluation with applications to Cryptography
Daniel Camazón-Portela, Juan Antonio López-Ramos
Through this work we introduce an action of the skew polynomial ring over based on its polynomial valuation and the concept of…
A generalization of Burmester-Desmedt GKE based on a non-abelian finite group action
Daniel Camazón Portela, Álvaro Otero Sánchez, Juan Antonio López Ramos
The advent of large-scale quantum computers implies that our existing public-key cryptography infrastructure has become insecure. That means that the privacy of many mobile applica…
Cryptoanalysis of a key exchange protocol based on a congruence-simple semiring action
Otero Sanchez Alvaro, Lopez Ramos Juan Antonio
We show that a previously introduced key exchange based on a congruence-simple semiring action is not secure by providing an attack that reveals the shared key from the distributed…
An active attack on a distributed Group Key Exchange system
Mohamed Baouch, Juan Antonio López-Ramos, Reto Schnyder +1
In this work, we introduce an active attack on a Group Key Exchange protocol by Burmester and Desmedt. The attacker obtains a copy of the shared key, which is created in a collabor…
Managing key multicasting through orthogonal systems
Jose' Antonio Alvarez-Bermejo, Juan Antonio Lopez-Ramos, Joachim Rosenthal +1
In this paper we propose a new protocol to manage multicast key distribution. The protocol is based on the use of orthogonal systems in vector spaces. The main advantage in compari…