[PATCH] Add gcry_mpi_ec_sub.
teichm at in.tum.de
Tue Jul 22 10:50:43 CEST 2014
Ian Goldberg wrote:
> Wait: isn't the negation of a point (x,y) on a twisted Edwards curve
> the point (-x,y)? You're calculating (x,-y) above, it seems to me.
indeed I am calculating (x,-y). I took Appendix A from the Curve 25519 paper
as reference. If that is indeed wrong, I will of course amend the patch.
More information about the Gcrypt-devel