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      1 package org.bouncycastle.math.ec;
      2 
      3 /**
      4  * Class holding precomputation data for the WTNAF (Window
      5  * <code>&tau;</code>-adic Non-Adjacent Form) algorithm.
      6  */
      7 class WTauNafPreCompInfo implements PreCompInfo
      8 {
      9     /**
     10      * Array holding the precomputed <code>ECPoint.F2m</code>s used for the
     11      * WTNAF multiplication in <code>
     12      * {@link org.bouncycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
     13      * WTauNafMultiplier.multiply()}</code>.
     14      */
     15     private ECPoint.F2m[] preComp = null;
     16 
     17     /**
     18      * Constructor for <code>WTauNafPreCompInfo</code>
     19      * @param preComp Array holding the precomputed <code>ECPoint.F2m</code>s
     20      * used for the WTNAF multiplication in <code>
     21      * {@link org.bouncycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
     22      * WTauNafMultiplier.multiply()}</code>.
     23      */
     24     WTauNafPreCompInfo(ECPoint.F2m[] preComp)
     25     {
     26         this.preComp = preComp;
     27     }
     28 
     29     /**
     30      * @return the array holding the precomputed <code>ECPoint.F2m</code>s
     31      * used for the WTNAF multiplication in <code>
     32      * {@link org.bouncycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
     33      * WTauNafMultiplier.multiply()}</code>.
     34      */
     35     protected ECPoint.F2m[] getPreComp()
     36     {
     37         return preComp;
     38     }
     39 }
     40