org.bouncycastle.math.ec
Class WNafPreCompInfo

java.lang.Object
  |
  +--org.bouncycastle.math.ec.WNafPreCompInfo

All Implemented Interfaces:

PreCompInfo

public class WNafPreCompInfo

extends java.lang.Object

implements PreCompInfo

Class holding precomputation data for the WNAF (Window Non-Adjacent Form) algorithm.

Field Summary

protected int	confWidth
protected ECPoint[]	preComp Array holding the precomputed ECPoints used for a Window NAF multiplication.
protected ECPoint[]	preCompNeg Array holding the negations of the precomputed ECPoints used for a Window NAF multiplication.
protected ECPoint	twice Holds an ECPoint representing twice(this).
protected int	width

Constructor Summary

WNafPreCompInfo()

Method Summary

int	getConfWidth()
ECPoint[]	getPreComp()
ECPoint[]	getPreCompNeg()
ECPoint	getTwice()
int	getWidth()
boolean	isPromoted()
void	setConfWidth(int confWidth)
void	setPreComp(ECPoint[] preComp)
void	setPreCompNeg(ECPoint[] preCompNeg)
void	setTwice(ECPoint twice)
void	setWidth(int width)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

confWidth

protected int confWidth

preComp

protected ECPoint[] preComp

Array holding the precomputed ECPoints used for a Window NAF multiplication.

preCompNeg

protected ECPoint[] preCompNeg

Array holding the negations of the precomputed ECPoints used for a Window NAF multiplication.

twice

protected ECPoint twice

Holds an ECPoint representing twice(this). Used for the Window NAF multiplication to create or extend the precomputed values.

width

protected int width

Constructor Detail

WNafPreCompInfo

public WNafPreCompInfo()

Method Detail

isPromoted

public boolean isPromoted()

getConfWidth

public int getConfWidth()

setConfWidth

public void setConfWidth(int confWidth)

getPreComp

public ECPoint[] getPreComp()

setPreComp

public void setPreComp(ECPoint[] preComp)

getPreCompNeg

public ECPoint[] getPreCompNeg()

setPreCompNeg

public void setPreCompNeg(ECPoint[] preCompNeg)

getTwice

public ECPoint getTwice()

setTwice

public void setTwice(ECPoint twice)

getWidth

public int getWidth()

setWidth

public void setWidth(int width)