X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/814bf4c5e6e79dd20661786a5a32b5b287d252da..a90d420cbe87490c844ae422c966e746d3134b07:/utils/curve25519.sage

diff --git a/utils/curve25519.sage b/utils/curve25519.sage
index f5375a79..6fa3cd34 100644
--- a/utils/curve25519.sage
+++ b/utils/curve25519.sage
@@ -267,7 +267,7 @@ assert x25519(x, Y[0]) == x25519(y, X[0]) == Z[0]
 ### Edwards curve parameters and conversion.
 
 a = k(-1)
-d = k(-A0/(A0 + 1))
+d = -A0/(A0 + 1)
 
 def mont_to_ed(u, v):
   return sqrt(-A - 2)*u/v, (u - 1)/(u + 1)