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Added in API level 1
Summary: Ctors | Methods | Inherited Methods | [Expand All]

ECParameterSpec

public class ECParameterSpec
extends Object implements AlgorithmParameterSpec

java.lang.Object
    java.security.spec.ECParameterSpec

这个不可变类指定用于椭圆曲线密码术（ECC）的一组域参数。

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摘要(Summary)

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

根据指定的值创建椭圆曲线域参数。

公共方法(Public methods)
int getCofactor()

返回辅助因子。
EllipticCurve getCurve()

返回此参数定义的椭圆曲线。
ECPoint getGenerator()

返回也称为基点的生成器。
BigInteger getOrder()

返回生成器的顺序。

继承方法(Inherited methods)
From class java.lang.Object

Public constructors

ECParameterSpec

Added in API level 1 
ECParameterSpec (EllipticCurve curve, 
                ECPoint g, 
                BigInteger n, 
                int h)

根据指定的值创建椭圆曲线域参数。

参数(Parameters)
curve EllipticCurve: the elliptic curve which this parameter defines.
g ECPoint: the generator which is also known as the base point.
n BigInteger: the order of the generator g.
h int: the cofactor.
抛出异常(Throws)
NullPointerException if curve, g, or n is null.
IllegalArgumentException if n or h is not positive.

公共方法(Public methods)

getCofactor

Added in API level 1 
int getCofactor ()

返回辅助因子。

返回(Returns)
int the cofactor.

getCurve

Added in API level 1 
EllipticCurve getCurve ()

返回此参数定义的椭圆曲线。

返回(Returns)
EllipticCurve the elliptic curve that this parameter defines.

getGenerator

Added in API level 1 
ECPoint getGenerator ()

返回也称为基点的生成器。

返回(Returns)
ECPoint the generator which is also known as the base point.

getOrder

Added in API level 1 
BigInteger getOrder ()

返回生成器的顺序。

返回(Returns)
BigInteger the order of the generator.
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