ECParameterSpec JDK 1.6)

Description

public class ECParameterSpec

This immutable class specifies the set of domain parameters used with elliptic curve cryptography (ECC).

See also: AlgorithmParameterSpec

Constructors

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

Creates elliptic curve domain parameters based on the specified values.

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.

Methods

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public int getCofactor ()

Returns the cofactor.

public EllipticCurve getCurve ()

Returns the elliptic curve that this parameter defines.

public ECPoint getGenerator ()

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

public BigInteger getOrder ()

Returns the order of the generator.