Module java.base

Package java.security.spec

Class SM2ParameterSpec

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 final BigInteger	COFACTOR	The cofactor.
static final EllipticCurve	CURVE	The SM2 elliptic curve.
static final ECPoint	GENERATOR	The generator or base point.
static final String	OID	The OID of the SM2 elliptic curve.
static final BigInteger	ORDER	The order of the generator.

Method Summary

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 Details

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 Details

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.