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Quasi-Optimal Permutation Ranking and Applications to PERK
March 8, 2024, 3:36 a.m. |
IACR News www.iacr.org
ePrint Report: Quasi-Optimal Permutation Ranking and Applications to PERK
Slim Bettaieb, Alessandro Budroni, Marco Palumbi, Décio Luiz Gazzoni Filho
A ranking function for permutations maps every permutation of length $n$ to a unique integer between $0$ and $n!-1$. For permutations of size that are of interest in cryptographic applications, evaluating such a function requires multiple-precision arithmetic. This work introduces a quasi-optimal ranking technique that allows us to rank a permutation efficiently without needing a multiple-precision arithmetic library. We present experiments …
applications cryptographic eprint report function integer interest length maps marco report size
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