Optimized Sqrt and Trace for custom binary curves

1 files changed, 3 insertions, 1 deletions

diff --git a/crypto/src/math/ec/custom/sec/SecT283FieldElement.cs b/crypto/src/math/ec/custom/sec/SecT283FieldElement.cs

index e02108f73..adfd4e0ed 100644
--- a/crypto/src/math/ec/custom/sec/SecT283FieldElement.cs
+++ b/crypto/src/math/ec/custom/sec/SecT283FieldElement.cs
@@ -159,7 +159,9 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
 
         public override ECFieldElement Sqrt()
         {
-            return SquarePow(M - 1);
+            ulong[] z = Nat320.Create64();
+            SecT283Field.Sqrt(x, z);
+            return new SecT283FieldElement(z);
         }
 
         public virtual int Representation