Class ECParameterSpec

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.