1 files changed, 16 insertions, 0 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/math/ec/ScaleYNegateXPointMap.java b/bcprov/src/main/java/org/bouncycastle/math/ec/ScaleYNegateXPointMap.java
new file mode 100644
index 00000000..049b9a39
--- /dev/null
+++ b/bcprov/src/main/java/org/bouncycastle/math/ec/ScaleYNegateXPointMap.java
@@ -0,0 +1,16 @@
+package org.bouncycastle.math.ec;
+
+public class ScaleYNegateXPointMap implements ECPointMap
+{
+    protected final ECFieldElement scale;
+
+    public ScaleYNegateXPointMap(ECFieldElement scale)
+    {
+        this.scale = scale;
+    }
+
+    public ECPoint map(ECPoint p)
+    {
+        return p.scaleYNegateX(scale);
+    }
+}