Add rfc ref

dedis · May 6, 2024 · 9dd0c29 · 9dd0c29
1 parent b348c25
commit 9dd0c29
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/group/edwards25519/point.go b/group/edwards25519/point.go
@@ -408,6 +408,9 @@ func byteXor(dst, b1, b2 []byte) ([]byte, error) {
 	return dst, nil
 }
 
+// curve25519Elligator2 implements a map from fieldElement to a point on Curve25519
+// as defined in section G.2.1. of [RFC9380]
+// [RFC9380]: https://datatracker.ietf.org/doc/html/rfc9380#name-curve25519-q-5-mod-8-k-1
 func curve25519Elligator2(u fieldElement) (xn, xd, yn, yd fieldElement) {
 	// Some const needed
 	var one fieldElement
@@ -492,6 +495,9 @@ func curve25519Elligator2(u fieldElement) (xn, xd, yn, yd fieldElement) {
 	return xn, xd, y, one
 }
 
+// mapToCurveElligator2Ed25519 implements a map from fieldElement to a point on ed25519
+// as defined in section G.2.2. of [RFC9380]
+// [RFC9380]: https://datatracker.ietf.org/doc/html/rfc9380#name-edwards25519
 func mapToCurveElligator2Ed25519(u fieldElement) kyber.Point {
 	var xn, xd, yn, yd fieldElement
 	var zero, one, tv1 fieldElement