summary refs log tree commit diff
path: root/crypto/src/math/ec/custom/sec/SecT113Field.cs
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT113Field.cs')
-rw-r--r--crypto/src/math/ec/custom/sec/SecT113Field.cs18
1 files changed, 17 insertions, 1 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT113Field.cs b/crypto/src/math/ec/custom/sec/SecT113Field.cs
index 65249562a..2e99bdc4c 100644
--- a/crypto/src/math/ec/custom/sec/SecT113Field.cs
+++ b/crypto/src/math/ec/custom/sec/SecT113Field.cs
@@ -34,7 +34,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
             z[1] = x[1];
         }
 
-        private static void AddTo(ulong[] x, ulong[] z)
+        public static void AddTo(ulong[] x, ulong[] z)
         {
             z[0] ^= x[0];
             z[1] ^= x[1];
@@ -147,6 +147,11 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
             AddExt(zz, tt, zz);
         }
 
+        public static void SquareExt(ulong[] x, ulong[] zz)
+        {
+            ImplSquare(x, zz);
+        }
+
         public static void SquareN(ulong[] x, int n, ulong[] z)
         {
             Debug.Assert(n > 0);
@@ -258,6 +263,17 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
 
         protected static void ImplSquare(ulong[] x, ulong[] zz)
         {
+#if NETCOREAPP3_0_OR_GREATER
+            if (Bmi2.X64.IsSupported)
+            {
+                zz[3] = Bmi2.X64.ParallelBitDeposit(x[1] >> 32, 0x5555555555555555UL);
+                zz[2] = Bmi2.X64.ParallelBitDeposit(x[1]      , 0x5555555555555555UL);
+                zz[1] = Bmi2.X64.ParallelBitDeposit(x[0] >> 32, 0x5555555555555555UL);
+                zz[0] = Bmi2.X64.ParallelBitDeposit(x[0]      , 0x5555555555555555UL);
+                return;
+            }
+#endif
+
             Interleave.Expand64To128(x, 0, 2, zz, 0);
         }
     }