Improved Collision Cryptanalysis of Authenticated Cipher MORUS

DOI

10.2991/aiie-16.2016.98How to use a DOI?

Keywords

CAESAR; MORUS; collision cryptanalysis; partition method

Abstract

MORUS is an authenticated stream cipher designed by Wu et al. and submitted for the third-round of the CAESAR competition. The collision properties of MORUS-640-128 are studied. We propose the necessary conditions for an internal state collision after two-step update, i.e., the Hamming weight of the input difference is at least 5 and the difference is distributed in at least three 32-bit words, which provide the theoretical support for MORUS's resistance against collision attack.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Tairong Shi
AU  - Jie Guan
AU  - Junzhi Li
AU  - Pei Zhang
PY  - 2016/11
DA  - 2016/11
TI  - Improved Collision Cryptanalysis of Authenticated Cipher MORUS
BT  - Proceedings of the 2016 2nd International Conference on Artificial Intelligence and Industrial Engineering (AIIE 2016)
PB  - Atlantis Press
SP  - 429
EP  - 432
SN  - 1951-6851
UR  - https://doi.org/10.2991/aiie-16.2016.98
DO  - 10.2991/aiie-16.2016.98
ID  - Shi2016/11
ER  -