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Extending class group action attacks via pairings
June 5, 2024, 11:30 a.m. |
IACR News www.iacr.org
ePrint Report: Extending class group action attacks via pairings
Joseph Macula, Katherine E. Stange
We introduce a new tool for the study of isogeny-based cryptography, namely pairings which are sesquilinear (conjugate linear) with respect to the $\mathcal{O}$-module structure of an elliptic curve with CM by an imaginary quadratic field $\mathcal{O}$. We use these pairings to study the security of problems based on the class group action on collections of oriented ordinary or supersingular elliptic curves. This extends work of [CHM+23] …
action attacks class cryptography curve elliptic eprint report linear report respect structure study tool
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