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Communication Dans Un Congrès Année : 2023

Finite field arithmetic in large characteristic for classical and post-quantum cryptography

Résumé

Both classical and post-quantum cryptography massively use large characteristic nite elds or rings. Consequently, basic arithmetic on these elds or rings (integer or polynomial multiplication, modular reduction) may signicantly impact cryptographic devices' eciency and power consumption. In this paper, we will present the most used and the less common methods, clarify their advantages and drawbacks and explain which ones are the more relevant depending on the implementation context and the chosen cryptographic primitive. We also explain why recent proposals such as RNS, PMNS or Montgomery-friendly primes may be a good alternative to classical methods depending on the context and suggest directions for further research to improve them.
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Dates et versions

hal-03933761 , version 1 (10-01-2023)

Identifiants

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Sylvain Duquesne. Finite field arithmetic in large characteristic for classical and post-quantum cryptography. WAIFI, 2022, Chengdu, China. pp.79-106, ⟨10.1007/978-3-031-22944-2_5⟩. ⟨hal-03933761⟩
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