{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T15:35:51Z","timestamp":1774020951478,"version":"3.50.1"},"reference-count":0,"publisher":"Universitatsbibliothek der Ruhr-Universitat Bochum","issue":"3","license":[{"start":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T00:00:00Z","timestamp":1758758400000},"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>At Eurocrypt\u201925, Belkheyar et al. introduced a new non-linear layer called ChiChi or \u03c7\u03c7. ChiChi is built based on Daemen\u2019s \u03c7 function, but crucially gives a permutation in even dimension divisible by four.In this work, we generalize their construction in multiple ways, prove their open conjecture regarding the algebraic degree of the inverse of ChiChi, and investigate the properties of it against key recovery attacks.<\/jats:p>","DOI":"10.46586\/tosc.v2025.i3.800-826","type":"journal-article","created":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T05:54:13Z","timestamp":1758866053000},"page":"800-826","source":"Crossref","is-referenced-by-count":1,"title":["Generalizations of ChiChi: Families of Low-Latency Permutations in Any Even Dimension"],"prefix":"10.46586","volume":"2025","author":[{"given":"Samuele","family":"Andreoli","sequence":"first","affiliation":[]},{"given":"Gregor","family":"Leander","sequence":"additional","affiliation":[]},{"given":"Enrico","family":"Piccione","sequence":"additional","affiliation":[]},{"given":"Lukas","family":"Stennes","sequence":"additional","affiliation":[]}],"member":"25480","published-online":{"date-parts":[[2025,9,25]]},"container-title":["IACR Transactions on Symmetric Cryptology"],"original-title":[],"link":[{"URL":"https:\/\/tosc.iacr.org\/index.php\/ToSC\/article\/download\/12486\/12198","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/tosc.iacr.org\/index.php\/ToSC\/article\/download\/12486\/12198","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T05:54:14Z","timestamp":1758866054000},"score":1,"resource":{"primary":{"URL":"https:\/\/tosc.iacr.org\/index.php\/ToSC\/article\/view\/12486"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9,25]]},"references-count":0,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2025,9,25]]}},"URL":"https:\/\/doi.org\/10.46586\/tosc.v2025.i3.800-826","relation":{},"ISSN":["2519-173X"],"issn-type":[{"value":"2519-173X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9,25]]}}}