http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5. 
package org.bouncycastle.math.ec;


Class holding precomputation data for the WTNAF (Window
τ-adic Non-Adjacent Form) algorithm.

/**
 * Class holding precomputation data for the WTNAF (Window
 * <code>&tau;</code>-adic Non-Adjacent Form) algorithm.
 */
class WTauNafPreCompInfo implements PreCompInfo
{
    
Array holding the precomputed ECPoint.F2ms used for the
WTNAF multiplication in  WTauNafMultiplier.multiply().

/**
     * Array holding the precomputed <code>ECPoint.F2m</code>s used for the
     * WTNAF multiplication in <code>
     * {@link org.bouncycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
     * WTauNafMultiplier.multiply()}</code>.
     */
    private ECPoint.F2m[] preComp = null;

    
Constructor for WTauNafPreCompInfo

Params:
  • preComp – Array holding the precomputed ECPoint.F2ms
used for the WTNAF multiplication in  WTauNafMultiplier.multiply().
/**
     * 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.bouncycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
     * WTauNafMultiplier.multiply()}</code>.
     */
    WTauNafPreCompInfo(ECPoint.F2m[] preComp)
    {
        this.preComp = preComp;
    }

    
Returns:the array holding the precomputed ECPoint.F2ms
used for the WTNAF multiplication in  WTauNafMultiplier.multiply().
/**
     * @return the array holding the precomputed <code>ECPoint.F2m</code>s
     * used for the WTNAF multiplication in <code>
     * {@link org.bouncycastle.math.ec.multiplier.WTauNafMultiplier.multiply()
     * WTauNafMultiplier.multiply()}</code>.
     */
    protected ECPoint.F2m[] getPreComp()
    {
        return preComp;
    }
}