A note on the security of MST3

M. I.  Gonzalez Vasco; A.  L.  Perez del Pozo; P.  Taborda Duarte

Paper 2009/096

A note on the security of MST3

M. I. Gonzalez Vasco, A. L. Perez del Pozo, and P. Taborda Duarte

Abstract

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.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: cryptanalysis group factorizations covers Suzuki 2-groups
Contact author(s): angel perez @ urjc es
History: 2009-03-02: received
Short URL: https://ia.cr/2009/096
License: CC BY

BibTeX

@misc{cryptoeprint:2009/096,
      author = {M. I.  Gonzalez Vasco and A.  L.  Perez del Pozo and P.  Taborda Duarte},
      title = {A note on the security of {MST3}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2009/096},
      year = {2009},
      url = {https://eprint.iacr.org/2009/096}
}