From: Niels Möller <nisse@lysator.liu.se>
Date: Tue, 14 Oct 2014 19:21:35 +0000 (+0200)
Subject: Note the Edwards curve neutral point.
X-Git-Tag: nettle_3.1rc1~63
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ddcb5d10988146345b31df2caee1b6a9755c600;p=thirdparty%2Fnettle.git

Note the Edwards curve neutral point.
---

diff --git a/misc/ecc-formulas.tex b/misc/ecc-formulas.tex
index 6c61982d..bf06d110 100644
--- a/misc/ecc-formulas.tex
+++ b/misc/ecc-formulas.tex
@@ -138,7 +138,8 @@ For an Edwards curve, we consider the special case
 \begin{equation*}
   x^2 + y^2 = 1 + d x^2 y^2
 \end{equation*}
-See \url{http://cr.yp.to/papers.html#newelliptic}.
+See \url{http://cr.yp.to/papers.html#newelliptic}. The neutral point is
+$(0, 1)$.
 
 Affine formulas for addition, $(x_3, y_3) = (x_1, y_1) + (x_2,
 y_2)$: