Class SecpECPoint

java.lang.Object

java.security.spec.ECPoint

org.bitcoinj.secp.internal.SecpECPoint

All Implemented Interfaces:

SecpPoint, SecpPoint.Point, SecpPoint.Uncompressed

public class SecpECPoint
extends ECPoint
implements SecpPoint.Uncompressed

An ECPoint that has been validated to also be a SecpPoint. This class cannot represent the "point at infinity", if you need it use ECPoint.POINT_INFINITY and the superclass ECPoint.

Nested Class Summary

Nested classes/interfaces inherited from interface SecpPoint

SecpPoint.Compressed, SecpPoint.Infinity, SecpPoint.Point, SecpPoint.Uncompressed

Field Summary

Fields inherited from class ECPoint

POINT_INFINITY

Fields inherited from interface SecpPoint

POINT_INFINITY

Constructor Summary

Constructors

Constructor	Description
SecpECPoint(BigInteger x, BigInteger y)	Creates an ECPoint from the specified affine x-coordinate x and affine y-coordinate y.
SecpECPoint(SecpFieldElement x, SecpFieldElement y)

Method Summary

Modifier and Type	Method	Description
SecpPoint.Compressed	compress()	Convert to a compressed point.
boolean	isOdd()	Get the parity of the y-coordinate field value
SecpFieldElement	x()	Get the x-coordinate field value
SecpFieldElement	y()	Get the y-coordinate field value

Methods inherited from class ECPoint

equals, getAffineX, getAffineY, hashCode

Methods inherited from class Object

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

Methods inherited from interface SecpPoint.Uncompressed

serialize, toECPoint

Constructor Details

SecpECPoint

public SecpECPoint(BigInteger x,
 BigInteger y)

Creates an ECPoint from the specified affine x-coordinate x and affine y-coordinate y.

Parameters:

x - the affine x-coordinate.

y - the affine y-coordinate.

Throws:

NullPointerException - if x or y is null.

SecpECPoint

public SecpECPoint(SecpFieldElement x,
 SecpFieldElement y)

Method Details

x

public SecpFieldElement x()

Description copied from interface: SecpPoint.Point

Get the x-coordinate field value

Specified by:

x in interface SecpPoint.Point

Returns:

x-coordinate

y

public SecpFieldElement y()

Description copied from interface: SecpPoint.Uncompressed

Get the y-coordinate field value

Specified by:

y in interface SecpPoint.Uncompressed

Returns:

y-coordinate

compress

public SecpPoint.Compressed compress()

Description copied from interface: SecpPoint.Uncompressed

Convert to a compressed point.

Specified by:

compress in interface SecpPoint.Uncompressed

Returns:

compressed point

isOdd

public boolean isOdd()

Description copied from interface: SecpPoint.Point

Get the parity of the y-coordinate field value

Specified by:

isOdd in interface SecpPoint.Point

Returns:

true if odd, false if even