org.bouncycastle.math.ec

public Class WNafL2RMultiplier

Class Inheritance

extends AbstractECMultiplier

Imports

java.math.BigInteger

Class implementing the WNAF (Window Non-Adjacent Form) multiplication algorithm.

Constructor Summary

Access	Constructor and Description
public	WNafL2RMultiplier()

Modifier and Type	Method and Description
protected int	Returns: the window size to use getWindowSize(int the bit-length of the scalar to multiply by bits) Determine window width to use for a scalar multiplication of the given size.
protected ECPoint	Returns: A new `ECPoint` which equals `this` multiplied by `k`. multiplyPositive(ECPoint p, BigInteger The integer by which `this` is multiplied. k) Implements abstract org.bouncycastle.math.ec.AbstractECMultiplier.multiplyPositive. Multiplies `this` by an integer `k` using the Window NAF method.

Inherited from org.bouncycastle.math.ec.AbstractECMultiplier:: checkResult multiply

WNafL2RMultiplier	back to summary
public WNafL2RMultiplier()

getWindowSize	back to summary
protected int getWindowSize(int bits) Determine window width to use for a scalar multiplication of the given size. Parameters bits:int the bit-length of the scalar to multiply by Returns:int the window size to use

getWindowSize

protected int getWindowSize(int bits)

Determine window width to use for a scalar multiplication of the given size.

Parameters

Returns:int

the window size to use

multiplyPositive back to summary

multiplyPositive	back to summary
protected ECPoint multiplyPositive(ECPoint p, BigInteger k) Implements abstract org.bouncycastle.math.ec.AbstractECMultiplier.multiplyPositive. Multiplies `this` by an integer `k` using the Window NAF method. Parameters k:BigInteger The integer by which `this` is multiplied. Returns:ECPoint A new `ECPoint` which equals `this` multiplied by `k`.

protected ECPoint multiplyPositive(ECPoint p, BigInteger k)

Multiplies this by an integer k using the Window NAF method.

Parameters

Returns:ECPoint

A new ECPoint which equals this multiplied by k.