Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/104789
Title: | Zero-correlation attacks on tweakable block ciphers with linear tweakey expansion | Authors: | Ankele, Ralph Todo, Yosuke Guo, Jian Dobraunig, Christoph Lambooij, Eran Leander, Gregor |
Keywords: | Tweakable Block Ciphers DRNTU::Science::Mathematics Symmetric-Key Cryptography |
Issue Date: | 2019 | Source: | Ankele, R., Dobraunig, C., Guo, J., Lambooij, E., Leander, G., & Todo, Y. (2019). Zero-correlation attacks on tweakable block ciphers with linear tweakey expansion. IACR Transactions on Symmetric Cryptology, 2019(1), 192-235. doi:10.13154/tosc.v2019.i1.192-235 | Series/Report no.: | IACR Transactions on Symmetric Cryptology | Abstract: | The design and analysis of dedicated tweakable block ciphers is a quite recent and very active research field that provides an ongoing stream of new insights. For instance, results of Kranz, Leander, and Wiemer from FSE 2017 show that the addition of a tweak using a linear tweak schedule does not introduce new linear characteristics. In this paper, we consider – to the best of our knowledge – for the first time the effect of the tweak on zero-correlation linear cryptanalysis for ciphers that have a linear tweak schedule. It turns out that the tweak can often be used to get zero-correlation linear hulls covering more rounds compared to just searching zero-correlation linear hulls on the data-path of a cipher. Moreover, this also implies the existence of integral distinguishers on the same number of rounds. We have applied our technique on round reduced versions of QARMA, MANTIS, and SKINNY. As a result, we can present – to the best of our knowledge – the best attack (with respect to number of rounds) on a round-reduced variant of QARMA. | URI: | https://hdl.handle.net/10356/104789 http://hdl.handle.net/10220/49457 |
DOI: | 10.13154/tosc.v2019.i1.192-235 | Rights: | © 2019 The Author(s). All rights reserved. This paper was published by Ruhr University Bochum in IACR Transactions on Symmetric Cryptology and is made available with permission of The Author(s). | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | SPMS Journal Articles |
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Zero-correlation attacks on tweakable block ciphers with linear tweakey expansion.pdf | 9.15 MB | Adobe PDF | ![]() View/Open |
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