Cryptology ePrint Archive: Report 2022/443
Attack on SHealS and HealS: the Second Wave of GPST
Steven D. Galbraith and Yi-Fu Lai
Abstract: We cryptanalyse the isogeny-based public key encryption schemes SHealS and HealS, and the key exchange scheme HealSIDH of Fouotsa and Petit from Asiacrypt 2021.
Category / Keywords: public-key cryptography / Post-quantum cryptography, isogeny cryptograph, cryptanalysis, SIDH, SIKE, adaptive attacks, GPST attack
Date: received 7 Apr 2022, last revised 10 May 2022
Contact author: s galbraith at auckland ac nz, ylai276 at aucklanduni ac nz
Available format(s): PDF | BibTeX Citation
Note: -Update-
May 10th: generalise the generalised attack in the appendix.
Version: 20220510:043437 (All versions of this report)
Short URL: ia.cr/2022/443
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