Isogeny problems with level structure

L De Feo, TB Fouotsa, L Panny - … on the Theory and Applications of …, 2024 - Springer
Given two elliptic curves and the degree of an isogeny between them, finding the isogeny is
believed to be a difficult problem—upon which rests the security of nearly any isogeny …

Finding orientations of supersingular elliptic curves and quaternion orders

S Arpin, J Clements, P Dartois, JK Eriksen… - Designs, Codes and …, 2024 - Springer
An oriented supersingular elliptic curve is a curve which is enhanced with the information of
an endomorphism. Computing the full endomorphism ring of a supersingular elliptic curve is …

Avoiding Trusted Setup in Isogeny-based Commitments

GT Saah, TB Fouotsa, E Fouotsa… - Cryptology ePrint …, 2024 - eprint.iacr.org
In 2021, Sterner proposed a commitment scheme based on supersingular isogenies. For
this scheme to be binding, one relies on a trusted party to generate a starting supersingular …