程序包 java.security.spec

类 ECParameterSpec

java.lang.Object

java.security.spec.ECParameterSpec

所有已实现的接口:

AlgorithmParameterSpec

public class ECParameterSpec
extends Object
implements AlgorithmParameterSpec

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

从以下版本开始:

1.5

另请参阅:

AlgorithmParameterSpec

构造器概要

构造器

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

方法概要

限定符和类型	方法	说明
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.

从类继承的方法 java.lang.Object

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

构造器详细资料

ECParameterSpec

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

Creates elliptic curve domain parameters based on the specified values.

参数:

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.

抛出:

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

IllegalArgumentException - if n or h is not positive.

方法详细资料

getCurve

public EllipticCurve getCurve()

Returns the elliptic curve that this parameter defines.

返回:

the elliptic curve that this parameter defines.

getGenerator

public ECPoint getGenerator()

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

返回:

the generator which is also known as the base point.

getOrder

public BigInteger getOrder()

Returns the order of the generator.

返回:

the order of the generator.

getCofactor

public int getCofactor()

Returns the cofactor.

返回:

the cofactor.