Class Overview
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.
Summary
Public Constructors |
|
ECPoint(BigInteger x, BigInteger y)
Creates an ECPoint from the specified affine x-coordinate
x and affine y-coordinate y .
|
Public Methods |
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.
|
[Expand]
Inherited Methods |
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object .
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait()
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object.
|
final
void
|
wait(long timeout, int nanos)
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object, or
some other thread interrupts the current thread, or a certain
amount of real time has elapsed.
|
final
void
|
wait(long timeout)
Causes the current thread to wait until either another thread invokes the
notify() method or the
notifyAll() method for this object, or a
specified amount of time has elapsed.
|
|
Fields
public
static
final
ECPoint
POINT_INFINITY
This defines the point at infinity.
Public Constructors
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. |
Public Methods
public
boolean
equals
(Object obj)
Compares this elliptic curve point for equality with
the specified object.
Parameters
obj
| the object to be compared. |
Returns
- true if
obj
is an instance of
ECPoint and the affine coordinates match, false otherwise.
public
BigInteger
getAffineX
()
Returns the affine x-coordinate x
.
Note: POINT_INFINITY has a null affine x-coordinate.
public
BigInteger
getAffineY
()
Returns the affine y-coordinate y
.
Note: POINT_INFINITY has a null affine y-coordinate.
public
int
hashCode
()
Returns a hash code value for this elliptic curve point.