Package org.apache.harmony.security.provider.crypto

Class DSAKeyFactoryImpl

java.lang.Object

java.security.KeyFactorySpi

org.apache.harmony.security.provider.crypto.DSAKeyFactoryImpl

public class DSAKeyFactoryImpl
extends KeyFactorySpi

Constructor Summary

Constructors

Constructor	Description
DSAKeyFactoryImpl()

Method Summary

Modifier and Type	Method	Description
protected PrivateKey	engineGeneratePrivate(KeySpec keySpec)	This method generates a DSAPrivateKey object from the provided key specification.
protected PublicKey	engineGeneratePublic(KeySpec keySpec)	This method generates a DSAPublicKey object from the provided key specification.
protected <T extends KeySpec> T	engineGetKeySpec(Key key, Class<T> keySpec)	This method returns a specification for the supplied key.
protected Key	engineTranslateKey(Key key)	The method generates a DSAPublicKey object from the provided key.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DSAKeyFactoryImpl

public DSAKeyFactoryImpl()

Method Details

engineGeneratePrivate

protected PrivateKey engineGeneratePrivate(KeySpec keySpec) throws InvalidKeySpecException

This method generates a DSAPrivateKey object from the provided key specification.

Specified by:

engineGeneratePrivate in class KeyFactorySpi

Parameters:

keySpec - - the specification (key material) for the DSAPrivateKey.

Returns:

a DSAPrivateKey object

Throws:

InvalidKeySpecException - if "keySpec" is neither DSAPrivateKeySpec nor PKCS8EncodedKeySpec

engineGeneratePublic

protected PublicKey engineGeneratePublic(KeySpec keySpec) throws InvalidKeySpecException

This method generates a DSAPublicKey object from the provided key specification.

Specified by:

engineGeneratePublic in class KeyFactorySpi

Parameters:

keySpec - - the specification (key material) for the DSAPublicKey.

Returns:

a DSAPublicKey object

Throws:

InvalidKeySpecException - if "keySpec" is neither DSAPublicKeySpec nor X509EncodedKeySpec

engineGetKeySpec

protected <T extends KeySpec> T engineGetKeySpec(Key key, Class<T> keySpec) throws InvalidKeySpecException

This method returns a specification for the supplied key. The specification will be returned in the form of an object of the type specified by keySpec.

Specified by:

engineGetKeySpec in class KeyFactorySpi

Parameters:

key - - either DSAPrivateKey or DSAPublicKey

keySpec - - either DSAPrivateKeySpec.class or DSAPublicKeySpec.class

Returns:

either a DSAPrivateKeySpec or a DSAPublicKeySpec

Throws:

InvalidKeySpecException - if "keySpec" is not a specification for DSAPublicKey or DSAPrivateKey

engineTranslateKey

protected Key engineTranslateKey(Key key) throws InvalidKeyException

The method generates a DSAPublicKey object from the provided key.

Specified by:

engineTranslateKey in class KeyFactorySpi

Parameters:

key - - a DSAPublicKey object or DSAPrivateKey object.

Returns:

object of the same type as the "key" argument

Throws:

InvalidKeyException - if "key" is neither DSAPublicKey nor DSAPrivateKey