International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Joost Renes

Affiliation: Radboud Universiteit

Publications

Year
Venue
Title
2018
ASIACRYPT
CSIDH: An Efficient Post-Quantum Commutative Group Action
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 $$\mathbb F_p$$, 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.
2017
EUROCRYPT
2017
ASIACRYPT
2016
EUROCRYPT
2016
CHES
2015
EPRINT