All Implemented Interfaces:

AlgorithmParameterSpec

public class ECParameterSpec
extends Object
implements AlgorithmParameterSpec 

Since:

1.5

See Also:

AlgorithmParameterSpec

• Constructor Summary

  Constructors

  Constructor	Description
  ECParameterSpec (EllipticCurve curve, ECPoint g, BigInteger n, int h)	Creates elliptic curve domain parameters based on the specified values.

• Method Summary

  All Methods

  Modifier and Type	Method	Description
  int	getCofactor ()	Returns the cofactor.
  EllipticCurve	getCurve ()	Returns the elliptic curve that this parameter defines.
  ECPoint	getGenerator ()	Returns the generator which is also known as the base point.
  BigInteger	getOrder ()	Returns the order of the generator.

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • ECParameterSpec

    public ECParameterSpec(EllipticCurve curve,
     ECPoint g,
     BigInteger n,
     int h)

    Creates elliptic curve domain parameters based on the specified values.

    Parameters:

    curve - the elliptic curve which this parameter defines.

    g - the generator which is also known as the base point.

    n - the order of the generator g.

    h - the cofactor.

    Throws:

    NullPointerException - if curve, g, or n is null.

    IllegalArgumentException - if n or h is not positive.

• Method Detail

  • getCurve

    public EllipticCurve getCurve()

    Returns the elliptic curve that this parameter defines.

    Returns:

    the elliptic curve that this parameter defines.

  • getGenerator

    public ECPoint getGenerator()

    Returns the generator which is also known as the base point.

    Returns:

    the generator which is also known as the base point.

  • getOrder

    public BigInteger getOrder()

    Returns the order of the generator.

    Returns:

    the order of the generator.

  • getCofactor

    public int getCofactor()

    Returns the cofactor.

    Returns:

    the cofactor.