1 files changed, 0 insertions, 77 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/MixedNafR2LMultiplier.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/MixedNafR2LMultiplier.java
deleted file mode 100644
index e626103ae..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/MixedNafR2LMultiplier.java
+++ /dev/null
@@ -1,77 +0,0 @@
-package org.spongycastle.math.ec;
-
-import java.math.BigInteger;
-
-/**
- * Class implementing the NAF (Non-Adjacent Form) multiplication algorithm (right-to-left) using
- * mixed coordinates.
- */
-public class MixedNafR2LMultiplier extends AbstractECMultiplier
-{
-    protected int additionCoord, doublingCoord;
-
-    /**
-     * By default, addition will be done in Jacobian coordinates, and doubling will be done in
-     * Modified Jacobian coordinates (independent of the original coordinate system of each point).
-     */
-    public MixedNafR2LMultiplier()
-    {
-        this(ECCurve.COORD_JACOBIAN, ECCurve.COORD_JACOBIAN_MODIFIED);
-    }
-
-    public MixedNafR2LMultiplier(int additionCoord, int doublingCoord)
-    {
-        this.additionCoord = additionCoord;
-        this.doublingCoord = doublingCoord;
-    }
-
-    protected ECPoint multiplyPositive(ECPoint p, BigInteger k)
-    {
-        ECCurve curveOrig = p.getCurve();
-
-        ECCurve curveAdd = configureCurve(curveOrig, additionCoord);
-        ECCurve curveDouble = configureCurve(curveOrig, doublingCoord);
-
-        int[] naf = WNafUtil.generateCompactNaf(k);
-
-        ECPoint Ra = curveAdd.getInfinity();
-        ECPoint Td = curveDouble.importPoint(p);
-
-        int zeroes = 0;
-        for (int i = 0; i < naf.length; ++i)
-        {
-            int ni = naf[i];
-            int digit = ni >> 16;
-            zeroes += ni & 0xFFFF;
-
-            Td = Td.timesPow2(zeroes);
-
-            ECPoint Tj = curveAdd.importPoint(Td);
-            if (digit < 0)
-            {
-                Tj = Tj.negate();
-            }
-
-            Ra = Ra.add(Tj);
-
-            zeroes = 1;
-        }
-
-        return curveOrig.importPoint(Ra);
-    }
-
-    protected ECCurve configureCurve(ECCurve c, int coord)
-    {
-        if (c.getCoordinateSystem() == coord)
-        {
-            return c;
-        }
-
-        if (!c.supportsCoordinateSystem(coord))
-        {
-            throw new IllegalArgumentException("Coordinate system " + coord + " not supported by this curve");
-        }
-
-        return c.configure().setCoordinateSystem(coord).create();
-    }
-}