com.entrust.toolkit.security.arithmetic.groups.ellipticCurve

Class PolynomeECPoint

java.lang.Object

com.entrust.toolkit.security.arithmetic.groups.ellipticCurve.ECPoint

com.entrust.toolkit.security.arithmetic.groups.ellipticCurve.PolynomeECPoint

Deprecated.

since 8.0; use Entrust's new EC architecture com.entrust.toolkit.security.crypto.ec instead

public class PolynomeECPoint
extends ECPoint

The PolynomeECPoint class represents a point on an elliptic curve on a polynomial field.

Constructor Summary

Constructors

Constructor and Description
PolynomeECPoint(EllipticCurve curve) Deprecated. Creates the point at infinity on the elliptic curve curve.
PolynomeECPoint(Polynomial x, Polynomial y, EllipticCurve curve) Deprecated. Creates a point on the specified elliptic curve.

Method Summary

Modifier and Type	Method and Description
ECPoint	add(ECPoint p) Deprecated. Returns the sum of the calling point and the argument, p.
ECPoint	doublePoint() Deprecated. Returns the calling point added to itself.
boolean	equals(java.lang.Object o) Deprecated. Compares two elliptic curve points.
EllipticCurve	getCurve() Deprecated. Returns the curve to which the calling point belongs.
FieldElement	getXCoordinate() Deprecated. Returns the x coordinate of the calling point.
FieldElement	getYCoordinate() Deprecated. Returns the y coordinate of the calling point.
boolean	isPointAtInfinity() Deprecated. Determines whether the calling point is the point at infinity.
ECPoint	multiply(java.math.BigInteger a) Deprecated. Returns the result of the scalar multiplication of the calling point by a.
void	setDoublePoint() Deprecated. Doubles the calling point — adds this point to itself.
ASN1Object	toASN1Object() Deprecated. Returns the ASN.1 representation of this elliptic curve point as specified in X9.62.
java.lang.String	toString() Deprecated. Returns (x,y), where x is the x coordinate and y is the y coordinate of the calling point.

Methods inherited from class java.lang.Object

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

Constructor Detail

PolynomeECPoint

public PolynomeECPoint(EllipticCurve curve)

Deprecated.

Creates the point at infinity on the elliptic curve curve.

The curve parameters must be polynomials.

Parameters:

curve - an elliptic curve — the curve parameters must be polynomials

Throws:

java.lang.NullPointerException - if curve is null

java.lang.ClassCastException - if the curve parameters are not polynomials

PolynomeECPoint

public PolynomeECPoint(Polynomial x,
                       Polynomial y,
                       EllipticCurve curve)

Deprecated.

Creates a point on the specified elliptic curve.

The curve parameters must be polynomials.

Parameters:

x - the x coordinate of the new point

y - the y coordinate of the new point

Throws:

java.lang.NullPointerException - if x, y or curve is null

java.lang.ClassCastException - if the curve parameters are not polynomials

Method Detail

equals

public boolean equals(java.lang.Object o)

Deprecated.

Compares two elliptic curve points.

Two points are equal if their curves are equal, and if their coordinates are equal.

Specified by:

equals in class ECPoint

Parameters:

o - the elliptic curve point with which to compare this point

Returns:

true if o is equal to this point — false otherwise

add

public ECPoint add(ECPoint p)

Deprecated.

Returns the sum of the calling point and the argument, p.

The calling point remains unchanged. The argument p must belong to the same curve — p's curve must equal the calling point's curve.

Specified by:

add in class ECPoint

Parameters:

p - the point to add to the calling point

Returns:

this + p

Throws:

java.lang.IllegalArgumentException - if p is not on the same elliptic curve as the calling point

doublePoint

public ECPoint doublePoint()

Deprecated.

Returns the calling point added to itself.

The calling point remains unchanged.

Specified by:

doublePoint in class ECPoint

Returns:

this point added to itself

setDoublePoint

public void setDoublePoint()

Deprecated.

Doubles the calling point — adds this point to itself.

multiply

public ECPoint multiply(java.math.BigInteger a)

Deprecated.

Returns the result of the scalar multiplication of the calling point by a.

Overrides:

multiply in class ECPoint

Parameters:

a - the scalar by which to multiply this point

Returns:

the result of the operation a * this

isPointAtInfinity

public boolean isPointAtInfinity()

Deprecated.

Determines whether the calling point is the point at infinity.

Specified by:

isPointAtInfinity in class ECPoint

Returns:

true if this point is the point at infinity — false otherwise

getCurve

public EllipticCurve getCurve()

Deprecated.

Returns the curve to which the calling point belongs.

Specified by:

getCurve in class ECPoint

Returns:

this point's curve

getXCoordinate

public FieldElement getXCoordinate()

Deprecated.

Returns the x coordinate of the calling point.

Specified by:

getXCoordinate in class ECPoint

Returns:

the x coordinate of this point

getYCoordinate

public FieldElement getYCoordinate()

Deprecated.

Returns the y coordinate of the calling point.

Specified by:

getYCoordinate in class ECPoint

Returns:

the y coordinate of this point

toString

public java.lang.String toString()

Deprecated.

Returns (x,y), where x is the x coordinate and y is the y coordinate of the calling point.

If the calling point is the point at infinity, toString returns ( 0 ).

Specified by:

toString in class ECPoint

Returns:

the String representation of the calling point

toASN1Object

public ASN1Object toASN1Object()

Deprecated.

Returns the ASN.1 representation of this elliptic curve point as specified in X9.62.

Specified by:

toASN1Object in class ECPoint

Returns:

this point encoded in ASN.1