Reevaluating SIDH: Breakthroughs in Efficient Supersingular Isogeny Diffie-Hellman Algorithms 🔐

Papers We Love Conf 2022
https://pwlconf.org/2022/deirdre-connolly/
Transcript: https://pwlconf.org/2022/transcripts/Papers_We_Love_Deirdre_Connolly.txt

Deirdre Connolly / Zcash Foundation

Isogeny-based cryptography went from a curiosity to a serious post-quantum contender arguably because of this paper from Costello, Longa, and Naehrig from Microsoft Research. But excellent applied cryptography did not save SIDH from the design choice that made it useful, and doomed it. We will explore isogeny-based cryptography, how we got SIDH, how this paper was a game-changer for isogeny-based cryptography, how SIDH died, and what isogeny-based cryptosystems may pick up the baton for the future.

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