International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Angel L. Pérez del Pozo

Publications

Year
Venue
Title
2015
EPRINT
2009
EPRINT
A note on the security of MST3
M.I. Gonzalez Vasco Angel L. Pérez del Pozo P. Taborda Duarte
In this paper, we study the recently proposed encryption scheme MST3, focusing on a concrete instantiation using Suzuki-2-groups. In a passive scenario, we argue that the one wayness of this scheme may not, as claimed, be proven without the assumption that factoring group elements with respect to random covers for a subset of the group is hard. As a result, we conclude that for the proposed Suzuki 2-groups instantiation, impractical key sizes should be used in order to prevent more or less straightforward factorization attacks.