Addendum to Linear Cryptanalyses of Three AEADs with GIFT-128 as Underlying Primitives
In: IACR Transactions on Symmetric Cryptology, Jg. 2022 (2022-03-01), Heft 1
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Zugriff:
In ToSC 2021(2), Sun et al. implemented an automatic search with the Boolean satisfiability problem (SAT) method on GIFT-128 and identified a 19-round linear approximation with the expected linear potential being 2−117.43, which is utilised to launch a 24-round attack on the cipher. In this addendum, we discover a new 19-round linear approximation with a lower expected linear potential. However, in the attack, one more round can be appended after the distinguisher. As a result, we improve the previous optimal linear attack by one round and put forward a 25-round linear attack. Given that the optimal differential attack on GIFT-128, for now, covers 27-round, the resistances of the cipher against differential and linear attacks still have a 2-round gap.
Titel: |
Addendum to Linear Cryptanalyses of Three AEADs with GIFT-128 as Underlying Primitives
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Autor/in / Beteiligte Person: | Sun, Ling ; Wang, Wei ; Wang, Meiqin |
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Zeitschrift: | IACR Transactions on Symmetric Cryptology, Jg. 2022 (2022-03-01), Heft 1 |
Veröffentlichung: | Ruhr-Universität Bochum, 2022 |
Medientyp: | academicJournal |
ISSN: | 2519-173X (print) |
DOI: | 10.46586/tosc.v2022.i1.212-219 |
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