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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Analysis of the Authenticated Cipher MORUS (v1)
verfasst von : Aleksandra Mileva, Vesna Dimitrova, Vesselin Velichkov
Erschienen in: Cryptography and Information Security in the Balkans
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Abstract
We present several new observations on the CAESAR candidate MORUS (v1). First, we report a collision on its \(\mathrm {StateUpdate}(S, M)\) 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.