AlgorithmParameterSpecpublic class ECParameterSpec extends Object implements AlgorithmParameterSpec
| Constructor | Description |
|---|---|
ECParameterSpec |
Creates elliptic curve domain parameters based on the specified values. |
| Modifier and Type | Method | Description |
|---|---|---|
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. |
public ECParameterSpec(EllipticCurve curve, ECPoint g, BigInteger n, int h)
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.NullPointerException - if curve, g, or n is null.IllegalArgumentException - if n or h is not positive.public EllipticCurve getCurve()
public ECPoint getGenerator()
public BigInteger getOrder()
public int getCofactor()
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/security/spec/ECParameterSpec.html