[Resource Topic] 2017/379: Fault attack on Supersingular Isogeny Cryptosystems

Welcome to the resource topic for 2017/379

Fault attack on Supersingular Isogeny Cryptosystems

Authors: Yan Bo Ti


We present the first fault attack on cryptosystems based on supersingular isogenies. During the computation of the auxiliary points, the attack aims to change the base point to a random point on the curve via a fault injection. We will show that this would reveal the secret isogeny with one successful perturbation with high probability. We will exhibit the attack by placing it against signature schemes and key-exchange protocols with validations in place. Our paper therefore demonstrates the need to incorporate checks in implementations of the cryptosystem.

ePrint: https://eprint.iacr.org/2017/379

See all topics related to this paper.

Feel free to post resources that are related to this paper below.

Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.

For more information, see the rules for Resource Topics .