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It would be nice to implement math that is generic over both projective and affine points with a common prime marker trait, see zkcrypto/group#43.
I believe in the meantime we could use
Into<ProjectivePoint<C>> where C: PrimeCurve
.In the future I would like to implement the following math (which I believe are correct):
NonIdentity
points.NonZeroScalar
.fn add_identity(&self) -> NonIdentity
.Additionally the
PublicKey
type has to be adjusted to returnNonIdentity
when appopriate, which is a breaking change.On a last point I would like to suggest renaming this to
NonIdentityPoint
, which would be more in line withNonZeroScalar
.Fixes #1170.