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Loop-Abort Faults on Supersingular Isogeny Cryptosystems

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10346)

Abstract

Cryptographic schemes based on supersingular isogenies have become an active area of research in the field of post-quantum cryptography. We investigate the resistance of these cryptosystems to fault injection attacks. It appears that the iterative structure of the secret isogeny computation renders these schemes vulnerable to loop-abort attacks. Loop-abort faults allow to perform a full key recovery, bypassing all the previously introduced validation methods. Therefore implementing additional countermeasures seems unavoidable for applications where physical attacks are relevant.

Keywords

Supersingular isogeny cryptosystem Fault injection Real-world attacks Post-quantum cryptography 

Notes

Acknowledgements

This work has been supported in part by the European Union’s H2020 Programme under grant agreement number ERC-669891. The second author was supported by the Swiss National Science Foundation under grant number 200021-156420.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Sorbonne Universités, UPMC Paris 6, UMR 7606, LIP6ParisFrance
  2. 2.École Polytechnique Fédérale de Lausanne, EPFL IC LACALLausanneSwitzerland

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