1 files changed, 12 insertions, 0 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT131FieldElement.cs b/crypto/src/math/ec/custom/sec/SecT131FieldElement.cs
index f96c7ca39..4884e7152 100644
--- a/crypto/src/math/ec/custom/sec/SecT131FieldElement.cs
+++ b/crypto/src/math/ec/custom/sec/SecT131FieldElement.cs
@@ -150,6 +150,18 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
             return new SecT131FieldElement(z);
         }
 
+        public override ECFieldElement HalfTrace()
+        {
+            ulong[] z = Nat192.Create64();
+            SecT131Field.HalfTrace(x, z);
+            return new SecT131FieldElement(z);
+        }
+
+        public override bool HasFastTrace
+        {
+            get { return true; }
+        }
+
         public override int Trace()
         {
             return (int)SecT131Field.Trace(x);