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@yyyyx4 yyyyx4 commented Jan 27, 2026

As pointed out in the code:

# FIXME: This code fails if the degree is divisible by the characteristic.

The workaround it is to simply defer to EllipticCurveIsogeny.dual(). This could probably be streamlined/optimized more, but it's always better to have something at least work, even if suboptimally, than to have it not work at all.

@yyyyx4 yyyyx4 force-pushed the public/compute_duals_of_velusqrt_isogenies_correctly_in_all_cases branch from 69d654e to 2c25163 Compare January 27, 2026 16:26
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