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public class ECPoint
extends Object
This immutable class represents a point on an elliptic curve (EC)
in affine coordinates. Other coordinate systems can
extend this class to represent this point in other
coordinates.
Since:
1.5
Field Summary
Fields
Modifier and Type
Field
Description
static ECPoint
POINT_INFINITY
This defines the point at infinity.
Constructor Summary
Constructors
Constructor
Description
ECPoint (BigInteger x,
BigInteger y)
Creates an ECPoint from the specified affine x-coordinate
x
and affine y-coordinate y
.
Method Summary
All Methods Instance Methods Concrete Methods
Modifier and Type
Method
Description
boolean
equals (Object obj)
Compares this elliptic curve point for equality with
the specified object.
BigInteger
getAffineX ()
Returns the affine x-coordinate x
.
BigInteger
getAffineY ()
Returns the affine y-coordinate y
.
int
hashCode ()
Returns a hash code value for this elliptic curve point.
Constructor Detail
ECPoint
public ECPoint(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.
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