1 files changed, 39 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/WTauNafPreCompInfo.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/WTauNafPreCompInfo.java
new file mode 100644
index 000000000..2373ff7a9
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/WTauNafPreCompInfo.java
@@ -0,0 +1,39 @@
+package org.spongycastle.math.ec;
+
+/**
+ * Class holding precomputation data for the WTNAF (Window
+ * <code>&tau;</code>-adic Non-Adjacent Form) algorithm.
+ */
+class WTauNafPreCompInfo implements PreCompInfo
+{
+    /**
+     * Array holding the precomputed <code>ECPoint.F2m</code>s used for the
+     * WTNAF multiplication in <code>
+     * {@link org.spongycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
+     * WTauNafMultiplier.multiply()}</code>.
+     */
+    private ECPoint.F2m[] preComp = null;
+
+    /**
+     * Constructor for <code>WTauNafPreCompInfo</code>
+     * @param preComp Array holding the precomputed <code>ECPoint.F2m</code>s
+     * used for the WTNAF multiplication in <code>
+     * {@link org.spongycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
+     * WTauNafMultiplier.multiply()}</code>.
+     */
+    WTauNafPreCompInfo(ECPoint.F2m[] preComp)
+    {
+        this.preComp = preComp;
+    }
+
+    /**
+     * @return the array holding the precomputed <code>ECPoint.F2m</code>s
+     * used for the WTNAF multiplication in <code>
+     * {@link org.spongycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
+     * WTauNafMultiplier.multiply()}</code>.
+     */
+    protected ECPoint.F2m[] getPreComp()
+    {
+        return preComp;
+    }
+}