Analysis of the Authenticated Cipher MORUS (v1)

Aleksandra Mileva, Vesna Dimitrova, Vesselin Velichkov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

We present several new observations on the CAESAR candidate MORUS (v1). First, we report a collision on its backslashmathrm 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.
Original languageEnglish
Title of host publicationCryptography and Information Security in the Balkans
EditorsEnes Pasalic, Lars R. Knudsen
Place of PublicationCham
PublisherSpringer International Publishing AG
Number of pages15
ISBN (Print)978-3-319-29172-7
Publication statusPublished - 2016
EventSecond annual International Conference on Cryptography and Information Security - Koper, Slovenia
Duration: 3 Sept 20154 Sept 2015


ConferenceSecond annual International Conference on Cryptography and Information Security
Abbreviated titleBalkanCryptSec 2015
Internet address


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