Analysis of the Authenticated Cipher MORUS (v1)

Mileva, Aleksandra and Dimitrova, Vesna and Velichkov, Vesselin (2016) Analysis of the Authenticated Cipher MORUS (v1). In: Cryptography and Information Security in the Balkans - Second International Conference, BalkanCryptSec 2015, Koper, Slovenia, September 3-4, 2015, Revised Selected Papers. Lecture Notes in Computer Science (9540). Springer International Publishing Switzerland, pp. 45-59. ISBN 978-3-319-29172-7

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Official URL: http://www.springer.com/us/book/9783319291710

Abstract

We present several new observations on the CAESAR candidate MORUS (v1). First, we report a collision on its StateUpdate(S,M) function. Second, we describe a distinguisher in a nonce-reuse scenario with probability 1. Finally, we observe that the differences in some words of the state after the initialization have probabilities significantly higher than the random case.We note that the presented results do not threaten the security of the scheme. This is the first external analysis of the authenticated cipher MORUS.

Item Type: Book Section
Subjects: Natural sciences > Computer and information sciences
Divisions: Faculty of Computer Science
Depositing User: Aleksandra Mileva
Date Deposited: 13 Jan 2016 12:46
Last Modified: 13 Jan 2016 12:46
URI: http://eprints.ugd.edu.mk/id/eprint/14937

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