Differential and Rotational Cryptanalysis of Round-reduced MORUS

Ashutosh Dhar Dwivedi, Pawel Morawiecki, Sebastian Wójtowicz

2017

Abstract

In this paper we investigate the security margin of MORUS—an authenticated cipher taking part in the CAESAR competition. We propose a new key recovery approach, which can be seen as an accelerated exhaustive search. We also verify the resistance of MORUS against internal differential and rotational cryptanalysis. Our analysis reveals that the cipher has a solid security margin and a lack of round constants does not bring any weakness. Our work helps to reliably evaluate this new, high-performance algorithm, which is particularly important in the context of the ongoing CAESAR competition.

Paper Citation

in Harvard Style

Dhar Dwivedi A., Morawiecki P. and Wójtowicz S. (2017). Differential and Rotational Cryptanalysis of Round-reduced MORUS . In Proceedings of the 14th International Joint Conference on e-Business and Telecommunications - Volume 6: SECRYPT, (ICETE 2017) ISBN 978-989-758-259-2, pages 275-284. DOI: 10.5220/0006411502750284

in Bibtex Style

@conference{secrypt17,
author={Ashutosh Dhar Dwivedi and Pawel Morawiecki and Sebastian Wójtowicz},
title={Differential and Rotational Cryptanalysis of Round-reduced MORUS},
booktitle={Proceedings of the 14th International Joint Conference on e-Business and Telecommunications - Volume 6: SECRYPT, (ICETE 2017)},
year={2017},
pages={275-284},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006411502750284},
isbn={978-989-758-259-2},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 14th International Joint Conference on e-Business and Telecommunications - Volume 6: SECRYPT, (ICETE 2017)
TI - Differential and Rotational Cryptanalysis of Round-reduced MORUS
SN - 978-989-758-259-2
AU - Dhar Dwivedi A.
AU - Morawiecki P.
AU - Wójtowicz S.
PY - 2017
SP - 275
EP - 284
DO - 10.5220/0006411502750284