java.lang.Object
java.security.spec.ECPoint
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
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Field Summary
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Constructor Summary
ConstructorDescriptionECPoint
(BigInteger x, BigInteger y) Creates an ECPoint from the specified affine x-coordinatex
and affine y-coordinatey
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Method Summary
Modifier and TypeMethodDescriptionboolean
Compares this elliptic curve point for equality with the specified object.Returns the affine x-coordinatex
.Returns the affine y-coordinatey
.int
hashCode()
Returns a hash code value for this elliptic curve point.
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Field Details
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POINT_INFINITY
This defines the point at infinity.
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Constructor Details
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ECPoint
Creates an ECPoint from the specified affine x-coordinatex
and affine y-coordinatey
.- Parameters:
x
- the affine x-coordinate.y
- the affine y-coordinate.- Throws:
NullPointerException
- ifx
ory
is null.
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Method Details
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getAffineX
Returns the affine x-coordinatex
. Note: POINT_INFINITY has a null affine x-coordinate.- Returns:
- the affine x-coordinate.
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getAffineY
Returns the affine y-coordinatey
. Note: POINT_INFINITY has a null affine y-coordinate.- Returns:
- the affine y-coordinate.
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equals
Compares this elliptic curve point for equality with the specified object. -
hashCode
public int hashCode()Returns a hash code value for this elliptic curve point.
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