com.ibm.crypto.ibmjcehybrid.provider

Class DiffieHellmanKeyFactoryHybrid

java.lang.Object

java.security.KeyFactorySpi

com.ibm.crypto.ibmjcehybrid.provider.DiffieHellmanKeyFactoryHybrid

public class DiffieHellmanKeyFactoryHybrid
extends java.security.KeyFactorySpi

This class is a facade for the DiffieHellman key factory.

Constructor Summary

Constructors

Constructor and Description
DiffieHellmanKeyFactoryHybrid() Creates a new instance of the DiffieHellmanKeyFactoryHybrid class.

Method Summary

Modifier and Type	Method and Description
protected java.security.PrivateKey	engineGeneratePrivate(java.security.spec.KeySpec keySpec) Generates a private key object from the provided key specification (key material).
protected java.security.PublicKey	engineGeneratePublic(java.security.spec.KeySpec keySpec) Generates a public key object from the provided key specification (key material).
protected java.security.spec.KeySpec	engineGetKeySpec(java.security.Key key, java.lang.Class keySpecClass) Returns a specification (key material) of the given key in the requested format.
protected java.security.Key	engineTranslateKey(java.security.Key key) Translates a Key object, whose provider may be unknown or potentially untrusted, into a corresponding Key object of this key factory.

Methods inherited from class java.lang.Object

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

Constructor Detail

DiffieHellmanKeyFactoryHybrid

public DiffieHellmanKeyFactoryHybrid()

Creates a new instance of the DiffieHellmanKeyFactoryHybrid class.

Method Detail

engineGeneratePrivate

protected java.security.PrivateKey engineGeneratePrivate(java.security.spec.KeySpec keySpec)
                                                  throws java.security.spec.InvalidKeySpecException

Generates a private key object from the provided key specification (key material).

Specified by:

engineGeneratePrivate in class java.security.KeyFactorySpi

Parameters:

keySpec - the specification (key material) of the private key (DSAPrivateHWKeySpec is the only accepatble keySpec).

Returns:

the newly created DSA private key.

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate for this key factory to produce a private key.

engineGeneratePublic

protected java.security.PublicKey engineGeneratePublic(java.security.spec.KeySpec keySpec)
                                                throws java.security.spec.InvalidKeySpecException

Generates a public key object from the provided key specification (key material).

Specified by:

engineGeneratePublic in class java.security.KeyFactorySpi

Parameters:

keySpec - the specification (key material) of the public key.

Returns:

the newly created public key.

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate for this key factory to produce a public key.

engineGetKeySpec

protected java.security.spec.KeySpec engineGetKeySpec(java.security.Key key,
                                                      java.lang.Class keySpecClass)
                                               throws java.security.spec.InvalidKeySpecException

Returns a specification (key material) of the given key in the requested format.

Specified by:

engineGetKeySpec in class java.security.KeyFactorySpi

Parameters:

key - the key

keySpecClass - the requested format in which the key material shall be returned

Returns:

the underlying key specification (key material) in the requested format

Throws:

java.security.spec.InvalidKeySpecException - if the requested key specification is inappropriate for the given key, or the given key cannot be processed (e.g., the given key has an unrecognized algorithm or format).

engineTranslateKey

protected java.security.Key engineTranslateKey(java.security.Key key)
                                        throws java.security.InvalidKeyException

Translates a Key object, whose provider may be unknown or potentially untrusted, into a corresponding Key object of this key factory.

Specified by:

engineTranslateKey in class java.security.KeyFactorySpi

Parameters:

key - the key whose provider is unknown or untrusted

Returns:

the translated key

Throws:

java.security.InvalidKeyException - if the given key cannot be processed by this key factory.