Elligator script: added paper URL

diff --git a/tests/gen/elligator.py b/tests/gen/elligator.py
index edf56761ccfb291a2bf34ac8703fdbce82d328c3..ab9c7fff3dd023e17e3406ea7dd1275799fe3747 100755 (executable)
--- a/tests/gen/elligator.py
+++ b/tests/gen/elligator.py
@@ -223,6 +223,7 @@ def x25519_public_key(private_key):
 # Elligator: Elliptic-curve points indistinguishable from uniform random strings
 # by Daniel J. Bernstein, Mike Hamburg, Anna Krasnova, and Tanja Lange
 # 2013
+# https://elligator.cr.yp.to/
 
 # Arbitrary non square, typically chosen to minimise computation.
 # 2 and sqrt(-1) both work fairly well, but 2 seems to be more popular.