Cryptology ePrint Archive: Report 2021/1114

Remarks on MOBS and cryptosystems using semidirect products

Chris Monico

Abstract: Recently, several cryptosystems have been proposed based semidirect products of various algebraic structures. Efficient attacks against several of them have already been given, including one very general attack which, unfortunately, does not apply to the MOBS system. The purpose of this note is to provide an observation that can be used as a point-of-attack for similar systems, and show how it can be used to efficiently cryptanalyze the MOBS system.

Category / Keywords: public-key cryptography / cryptanalysis

Original Publication (in the same form): Pending on

Date: received 1 Sep 2021

Contact author: c monico at ttu edu

Available format(s): PDF | BibTeX Citation

Version: 20210903:065501 (All versions of this report)

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