org.gudy.bouncycastle.math.ec
Class ECPoint

java.lang.Object
  org.gudy.bouncycastle.math.ec.ECPoint

Direct Known Subclasses:

ECPoint.F2m, ECPoint.Fp

public abstract class ECPoint
extends Object

base class for points on elliptic curves.

Nested Class Summary

static class	ECPoint.F2m Elliptic curve points over F2m
static class	ECPoint.Fp Elliptic curve points over Fp

Field Summary

protected org.gudy.bouncycastle.math.ec.ECMultiplier	multiplier
protected org.gudy.bouncycastle.math.ec.PreCompInfo	preCompInfo
protected boolean	withCompression

Constructor Summary

protected

ECPoint(ECCurve curve, ECFieldElement x, ECFieldElement y)

Method Summary

abstract ECPoint	add(ECPoint b)
boolean	equals(Object other)
ECCurve	getCurve()
abstract byte[]	getEncoded()
ECFieldElement	getX()
ECFieldElement	getY()
int	hashCode()
boolean	isCompressed()
boolean	isInfinity()
ECPoint	multiply(BigInteger k) Multiplies this ECPoint by the given number.
abstract ECPoint	negate()
abstract ECPoint	subtract(ECPoint b)
abstract ECPoint	twice()

Methods inherited from class java.lang.Object

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

Field Detail

withCompression

protected boolean withCompression

multiplier

protected org.gudy.bouncycastle.math.ec.ECMultiplier multiplier

preCompInfo

protected org.gudy.bouncycastle.math.ec.PreCompInfo preCompInfo

Constructor Detail

ECPoint

protected ECPoint(ECCurve curve,
                  ECFieldElement x,
                  ECFieldElement y)

Method Detail

getCurve

public ECCurve getCurve()

getX

public ECFieldElement getX()

getY

public ECFieldElement getY()

isInfinity

public boolean isInfinity()

isCompressed

public boolean isCompressed()

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getEncoded

public abstract byte[] getEncoded()

add

public abstract ECPoint add(ECPoint b)

subtract

public abstract ECPoint subtract(ECPoint b)

negate

public abstract ECPoint negate()

twice

public abstract ECPoint twice()

multiply

public ECPoint multiply(BigInteger k)

Multiplies this ECPoint by the given number.

Parameters:

k - The multiplicator.

Returns:

k * this.