On Fri Jan 31 00:07:44 PST 2014, Mike Hamburg wrote: > We could start with x^2 + y^2 = 1 - 14666 x^2 y^2 mod 2^192-2^64-1. > The isogenous curve y^2 = x^3 + 58666*x^2 + x is isomorphic to > y^2 = x^3 - 3*x + 6047900113480193987160910265022055632294672911518856488260.
I think we discussed this one in private already. Let u := sqrt(-d). Then 2*(u - 1)/(u + 1) is not a square, and the Elligator injective map is undefined. Paulo. _______________________________________________ Curves mailing list [email protected] https://moderncrypto.org/mailman/listinfo/curves
