ECPoint JDK 1.6)

Description

public class ECPoint

This immutable class represents a point on an elliptic curve (EC) in affine coordinates.

See also:

Constructors

private ECPoint ()

public ECPoint (BigInteger x, BigInteger y)

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

Methods

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public boolean equals (Object obj)

Compares this elliptic curve point for equality with the specified object.

Compares this elliptic curve point for equality with
the specified object.
Returns: true if obj is an instance of ECPoint and the affine coordinates match, false otherwise.
Parameters:
- obj - the object to be compared.

public BigInteger getAffineX ()

Returns the affine x-coordinate x.

Returns the affine x-coordinate x.
Note: POINT_INFINITY has a null affine x-coordinate.
Returns: the affine x-coordinate.

public BigInteger getAffineY ()

Returns the affine y-coordinate y.

Returns the affine y-coordinate y.
Note: POINT_INFINITY has a null affine y-coordinate.
Returns: the affine y-coordinate.

public int hashCode ()

Returns a hash code value for this elliptic curve point.