public class ECParameterSpec extends Object implements AlgorithmParameterSpec
AlgorithmParameterSpec
Constructor and Description |
---|
ECParameterSpec(EllipticCurve curve, ECPoint g, BigInteger n, int h)
根据指定的值创建椭圆曲线域参数。
|
Modifier and Type | Method and Description |
---|---|
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()
返回发生器的顺序。
|
public ECParameterSpec(EllipticCurve curve, ECPoint g, BigInteger n, int h)
curve
- 该参数定义的椭圆曲线。
g
- 也称为
g
的发电机。
n
-
n
的顺序
g
。
h
- 辅因子。
NullPointerException
如果-
curve
,
g
,或
n
为null。
IllegalArgumentException
- 如果
n
或
h
。
public EllipticCurve getCurve()
public ECPoint getGenerator()
public BigInteger getOrder()
public int getCofactor()
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