SM2ParameterSpec (Java SE 11 & JDK 11 )

java.lang.Object
- java.security.spec.ECParameterSpec
- - java.security.spec.SM2ParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec
```
public final class SM2ParameterSpec
extends ECParameterSpec
```
The SM2 elliptic curve parameter specification.

Field Summary

Fields
Modifier and Type	Field	Description
`static BigInteger`	`COFACTOR`	The cofactor.
`static EllipticCurve`	`CURVE`	The SM2 elliptic curve.
`static ECPoint`	`GENERATOR`	The generator or base point.
`static String`	`OID`	The OID of the SM2 elliptic curve.
`static BigInteger`	`ORDER`	The order of the generator.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static SM2ParameterSpec`	`instance()`	Returns the instance of SM2ParameterSpec.
`static boolean`	`isCurveSM2(byte[] encodedOid)`	Indicates if the encoded OID is SM2 elliptic curve.
`static boolean`	`isCurveSM2(String oid)`	Indicates if the OID is SM2 elliptic curve.

Methods declared in class java.security.spec.ECParameterSpec
getCofactor, getCurve, getGenerator, getOrder

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CURVE
```
public static final EllipticCurve CURVE
```
    The SM2 elliptic curve.
  - GENERATOR
```
public static final ECPoint GENERATOR
```
    The generator or base point.
  - ORDER
```
public static final BigInteger ORDER
```
    The order of the generator.
  - COFACTOR
```
public static final BigInteger COFACTOR
```
    The cofactor.
  - OID
```
public static final String OID
```
    The OID of the SM2 elliptic curve.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - instance
```
public static SM2ParameterSpec instance()
```
    Returns the instance of SM2ParameterSpec.
    
    Returns:
    
    the instance of SM2ParameterSpec
  - isCurveSM2
```
public static boolean isCurveSM2(byte[] encodedOid)
```
    Indicates if the encoded OID is SM2 elliptic curve.
    
    Parameters:
    
    encodedOid - the encoded OID.
    
    Returns:
    
    true if the encoded OID is SM2 elliptic curve; otherwise false.
  - isCurveSM2
```
public static boolean isCurveSM2(String oid)
```
    Indicates if the OID is SM2 elliptic curve.
    
    Parameters:
    
    oid - the encoded OID.
    
    Returns:
    
    true if the OID is SM2 elliptic curve; otherwise false.