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A note on the security of MST3
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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. |
BibTeX
@misc{eprint-2009-18191, title={A note on the security of MST3}, booktitle={IACR Eprint archive}, keywords={public-key cryptography / cryptanalysis, group factorizations, covers, Suzuki 2-groups}, url={http://eprint.iacr.org/2009/096}, note={ angel.perez@urjc.es 14301 received 26 Feb 2009, last revised 26 Feb 2009}, author={M.I. Gonzalez Vasco and Angel L. Pérez del Pozo and P. Taborda Duarte}, year=2009 }