Feb. 2, 2024, 8:48 a.m. |

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ePrint Report: Efficient (3,3)-isogenies on fast Kummer surfaces

Maria Corte-Real Santos, Craig Costello, Benjamin Smith

We give an alternative derivation of (N,N)-isogenies between fast Kummer surfaces which complements existing works based on the theory of theta functions. We use this framework to produce explicit formulae for the case of N = 3, and show that the resulting algorithms are more efficient than all prior (3,3)-isogeny algorithms.

case eprint report explicit fast framework functions real report theory theta

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