iaik.security.ecc.math.ecgroup
Class AffineCoordinate

java.lang.Object
  iaik.security.ecc.math.ecgroup.Coordinate
      iaik.security.ecc.math.ecgroup.AffineCoordinate

All Implemented Interfaces:

java.lang.Cloneable

public class AffineCoordinate

extends Coordinate

implements java.lang.Cloneable

Representation of affine coordinates (x, y), where x and y are elements of a (finite) field.

Field Summary

Fields inherited from class iaik.security.ecc.math.ecgroup.Coordinate

coordinateType_, x_, y_

Constructor Summary

AffineCoordinate(FieldElement x, FieldElement y)
Creates a new affine coordinate.

Method Summary

java.lang.Object	clone()
boolean	equals(java.lang.Object other)
int	hashCode() Returns the hash code of this value.
Coordinate	toAffine() Transforms the current coordinate representation into affine coordinates.
iaik.asn1.OCTET_STRING	toASN1Object() Elliptic Curve Points to Octet String Conversion Primitive or EC2OSP as defined in P1363.
iaik.security.ecc.math.ecgroup.ProjectiveCoordinate	toProjective() Converts the coordinates to a projective representation.
java.lang.String	toString() A human readable coordinate representation.

Methods inherited from class iaik.security.ecc.math.ecgroup.Coordinate

getCoordinateType, getX, getY, setX, setY

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AffineCoordinate

public AffineCoordinate(FieldElement x,
                        FieldElement y)

Creates a new affine coordinate.

Parameters:

x - the x coordinate

y - the y coordinate

Method Detail

clone

public java.lang.Object clone()

Overrides:

clone in class Coordinate

Returns:

a deep copy of this object.

equals

public boolean equals(java.lang.Object other)

Specified by:

equals in class Coordinate

Parameters:

other - the other object.

Returns:

true if and only if the other object is of the same class and both coordinates are equal.

hashCode

public int hashCode()

Returns the hash code of this value.

Specified by:

hashCode in class Coordinate

Returns:

the hash code of this value.

toAffine

public Coordinate toAffine()

Description copied from class: Coordinate

Transforms the current coordinate representation into affine coordinates. If the coordinates are already affine subclasses may simply return "this".

Specified by:

toAffine in class Coordinate

Returns:

the affine representation.

toASN1Object

public iaik.asn1.OCTET_STRING toASN1Object()

Elliptic Curve Points to Octet String Conversion Primitive or EC2OSP as defined in P1363.

Specified by:

toASN1Object in class Coordinate

Returns:

the octet string ASN.1 structure

toProjective

public iaik.security.ecc.math.ecgroup.ProjectiveCoordinate toProjective()

Converts the coordinates to a projective representation.

Returns:

the projective coordinates.

toString

public java.lang.String toString()

Description copied from class: Coordinate

A human readable coordinate representation.

Overrides:

toString in class Coordinate

Returns:

x and y coordinates.