Differential and rotational cryptanalysis of round-reduced MORUS

Ashutosh Dhar Dwivedi; Pawel Morawiecki; Sebastian Wójtowicz

doi:10.5220/0006411502750284

Differential and rotational cryptanalysis of round-reduced MORUS

Ashutosh Dhar Dwivedi, Pawel Morawiecki, Sebastian Wójtowicz

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

11 Citations (Scopus)

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.

Original language	English
Title of host publication	SECRYPT
Editors	Pierangela Samarati, Mohammad S. Obaidat, Enrique Cabello
Number of pages	10
Publisher	SCITEPRESS – Science and Technology Publications
Publication date	2017
Pages	275-284
ISBN (Electronic)	9789897582592
DOIs	https://doi.org/10.5220/0006411502750284
Publication status	Published - 2017
Event	14th International Joint Conference on e-Business and Telecommunications, ICETE 2017 - Madrid, Spain Duration: 24 Jul 2017 → 26 Jul 2017

Conference

Conference	14th International Joint Conference on e-Business and Telecommunications, ICETE 2017
Country/Territory	Spain
City	Madrid
Period	24/07/2017 → 26/07/2017
Sponsor	Institute for Systems and Technologies of Information, Control and Communication (INSTICC), Object Management Group (OMG), The Foundation for Intelligent Physical Agents (FIPA), Workflow Management Coalition (WfMC)

Series	ICETE 2017 - Proceedings of the 14th International Joint Conference on e-Business and Telecommunications
Volume	4

Bibliographical note

Publisher Copyright:
Copyright © 2017 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved.

Keywords

Authenticated Encryption
CAESAR Competition
Internal Differential Cryptanalysis
MORUS
Rotational Cryptanalysis

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Dwivedi, Ashutosh Dhar ; Morawiecki, Pawel ; Wójtowicz, Sebastian. / Differential and rotational cryptanalysis of round-reduced MORUS. SECRYPT. editor / Pierangela Samarati ; Mohammad S. Obaidat ; Enrique Cabello. SCITEPRESS – Science and Technology Publications, 2017. pp. 275-284 (ICETE 2017 - Proceedings of the 14th International Joint Conference on e-Business and Telecommunications, Vol. 4).

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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.",

keywords = "Authenticated Encryption, CAESAR Competition, Internal Differential Cryptanalysis, MORUS, Rotational Cryptanalysis",

author = "Dwivedi, {Ashutosh Dhar} and Pawel Morawiecki and Sebastian W{\'o}jtowicz",

note = "Publisher Copyright: Copyright {\textcopyright} 2017 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved.; 14th International Joint Conference on e-Business and Telecommunications, ICETE 2017 ; Conference date: 24-07-2017 Through 26-07-2017",

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Dwivedi, AD, Morawiecki, P & Wójtowicz, S 2017, Differential and rotational cryptanalysis of round-reduced MORUS. in P Samarati, MS Obaidat & E Cabello (eds), SECRYPT. SCITEPRESS – Science and Technology Publications, ICETE 2017 - Proceedings of the 14th International Joint Conference on e-Business and Telecommunications, vol. 4, pp. 275-284, 14th International Joint Conference on e-Business and Telecommunications, ICETE 2017, Madrid, Spain, 24/07/2017. https://doi.org/10.5220/0006411502750284

Differential and rotational cryptanalysis of round-reduced MORUS. / Dwivedi, Ashutosh Dhar; Morawiecki, Pawel; Wójtowicz, Sebastian.
SECRYPT. ed. / Pierangela Samarati; Mohammad S. Obaidat; Enrique Cabello. SCITEPRESS – Science and Technology Publications, 2017. p. 275-284 (ICETE 2017 - Proceedings of the 14th International Joint Conference on e-Business and Telecommunications, Vol. 4).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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AB - 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.

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Dwivedi AD, Morawiecki P, Wójtowicz S. Differential and rotational cryptanalysis of round-reduced MORUS. In Samarati P, Obaidat MS, Cabello E, editors, SECRYPT. SCITEPRESS – Science and Technology Publications. 2017. p. 275-284. (ICETE 2017 - Proceedings of the 14th International Joint Conference on e-Business and Telecommunications, Vol. 4). doi: 10.5220/0006411502750284

Differential and rotational cryptanalysis of round-reduced MORUS

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Keywords

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