diff --git a/crypto/src/math/ec/custom/sec/SecP256K1Field.cs b/crypto/src/math/ec/custom/sec/SecP256K1Field.cs
index 9a8915c01..a065ee790 100644
--- a/crypto/src/math/ec/custom/sec/SecP256K1Field.cs
+++ b/crypto/src/math/ec/custom/sec/SecP256K1Field.cs
@@ -97,6 +97,12 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
Reduce(tt, z);
}
+ public static void Multiply(uint[] x, uint[] y, uint[] z, uint[] tt)
+ {
+ Nat256.Mul(x, y, tt);
+ Reduce(tt, z);
+ }
+
public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
{
uint c = Nat256.MulAddTo(x, y, zz);
@@ -170,6 +176,12 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
Reduce(tt, z);
}
+ public static void Square(uint[] x, uint[] z, uint[] tt)
+ {
+ Nat256.Square(x, tt);
+ Reduce(tt, z);
+ }
+
public static void SquareN(uint[] x, int n, uint[] z)
{
Debug.Assert(n > 0);
@@ -185,6 +197,20 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
}
}
+ public static void SquareN(uint[] x, int n, uint[] z, uint[] tt)
+ {
+ Debug.Assert(n > 0);
+
+ Nat256.Square(x, tt);
+ Reduce(tt, z);
+
+ while (--n > 0)
+ {
+ Nat256.Square(z, tt);
+ Reduce(tt, z);
+ }
+ }
+
public static void Subtract(uint[] x, uint[] y, uint[] z)
{
int c = Nat256.Sub(x, y, z);
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