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Paper 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.

Note: -Update- May 10th: generalise the generalised attack in the appendix.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
Post-quantum cryptographyisogeny cryptographcryptanalysisSIDHSIKEadaptive attacksGPST attack
Contact author(s)
s galbraith @ auckland ac nz,ylai276 @ aucklanduni ac nz
History
2023-04-27: last of 2 revisions
2022-04-12: received
See all versions
Short URL
https://ia.cr/2022/443
License
Creative Commons Attribution
CC BY
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