Showing cs.CRShow all
3 papers · 1 filter
cs.CR2025
On key exchange protocol based on Two-side multiplication action
Alvaro Otero Sanchez
We present a cryptanalysis of a key exchange protocol based on the digital semiring. For this purpose, we find the maximal solution of a linear system over such semiring, and use t…
cs.CR2024
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…
cs.CR2024
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…