{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T14:42:55Z","timestamp":1765982575070,"version":"3.48.0"},"reference-count":0,"publisher":"Universitatsbibliothek der Ruhr-Universitat Bochum","issue":"4","license":[{"start":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T00:00:00Z","timestamp":1765929600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ToSC"],"abstract":"<jats:p>In this paper, we propose new differential attacks against the block cipher GIFT-64. First we demonstrate how the parallel matching algorithm proposed by Naya-Plasencia at CRYPTO\u201911 as an advanced list-merging algorithm can be leveraged to enhance differential attacks, overcoming a previously assumed bottleneck. By reducing the complexity of the pairs generation process whenever a non-linear filter is available, this approach enabled us to mount a new differential attack against 25-round GIFT-64 in the related-key setting.Then we use the differential Meet-in-the-Middle cryptanalysis technique introduced by Boura et al. at CRYPTO\u201923 to improve the differential attacks recently proposed by Chang et al. at CT-RSA\u201925, leading to the best known attacks against GIFT-64 in the single-key setting, both in term of number of rounds and of complexity.<\/jats:p>","DOI":"10.46586\/tosc.v2025.i4.284-307","type":"journal-article","created":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T14:39:59Z","timestamp":1765982399000},"page":"284-307","source":"Crossref","is-referenced-by-count":0,"title":["Improved Cryptanalysis of GIFT-64"],"prefix":"10.46586","volume":"2025","author":[{"given":"Patrick","family":"Derbez","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Baptiste","family":"Germon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bastien","family":"Michel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mar\u00eda","family":"Naya-Plasencia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"25480","published-online":{"date-parts":[[2025,12,17]]},"container-title":["IACR Transactions on Symmetric Cryptology"],"original-title":[],"link":[{"URL":"https:\/\/tosc.iacr.org\/index.php\/ToSC\/article\/download\/12618\/12333","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/tosc.iacr.org\/index.php\/ToSC\/article\/download\/12618\/12333","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T14:39:59Z","timestamp":1765982399000},"score":1,"resource":{"primary":{"URL":"https:\/\/tosc.iacr.org\/index.php\/ToSC\/article\/view\/12618"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,17]]},"references-count":0,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2025,12,17]]}},"URL":"https:\/\/doi.org\/10.46586\/tosc.v2025.i4.284-307","relation":{},"ISSN":["2519-173X"],"issn-type":[{"value":"2519-173X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,17]]}}}