CSIDH: An efficient post-quantum commutative group action

Wouter Castryck, Tanja Lange, Chloe Martindale, Lorenz Panny, Joost Renes

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

25 Citaten (Scopus)

Samenvatting

We propose an efficient commutative group action suitable for non-interactive key exchange in a post-quantum setting. Our construction follows the layout of the Couveignes–Rostovtsev–Stolbunov cryptosystem, but we apply it to supersingular elliptic curves defined over a large prime field Fp, rather than to ordinary elliptic curves. The Diffie–Hellman scheme resulting from the group action allows for public-key validation at very little cost, runs reasonably fast in practice, and has public keys of only 64 bytes at a conjectured AES-128 security level, matching NIST’s post-quantum security category I.

Originele taal-2Engels
TitelAdvances in Cryptology – ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings
RedacteurenThomas Peyrin, Steven Galbraith
Plaats van productieBerlin
UitgeverijSpringer
Pagina's395-427
Aantal pagina's33
ISBN van geprinte versie9783030033316
DOI's
StatusGepubliceerd - 1 jan 2018
Evenement24th Annual International Conference on Theory and Application of Cryptology and Information Security, (ASIACRYPT 2018) - Brisbane, Australië
Duur: 2 dec 20186 dec 2018
https://asiacrypt.iacr.org/2018/

Publicatie series

NaamLecture Notes in Computer Science
Volume11274
ISSN van geprinte versie0302-9743
ISSN van elektronische versie1611-3349

Congres

Congres24th Annual International Conference on Theory and Application of Cryptology and Information Security, (ASIACRYPT 2018)
Verkorte titelASIACRYPT2018
LandAustralië
StadBrisbane
Periode2/12/186/12/18
Internet adres

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  • Citeer dit

    Castryck, W., Lange, T., Martindale, C., Panny, L., & Renes, J. (2018). CSIDH: An efficient post-quantum commutative group action. In T. Peyrin, & S. Galbraith (editors), Advances in Cryptology – ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings (blz. 395-427). (Lecture Notes in Computer Science; Vol. 11274). Springer. https://doi.org/10.1007/978-3-030-03332-3_15