com.ibm.crypto.fips.provider

Class DHKeyFactory

java.lang.Object

java.security.KeyFactorySpi

com.ibm.crypto.fips.provider.DHKeyFactory

public final class DHKeyFactory
extends java.security.KeyFactorySpi

This class implements the Diffie-Hellman key factory of the IBMJCEFIPS provider.

Constructor Summary

Constructors

Constructor and Description
DHKeyFactory()

Method Summary

Methods

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 keySpec) Returns a specification (key material) of the given key object in the requested format.
protected java.security.Key	engineTranslateKey(java.security.Key key) This action is not allowed in this provider.
protected java.security.PrivateKey	internalGeneratePrivate(java.security.spec.KeySpec keySpec) Generates a private key object from the provided key specification (key material).
protected java.security.PublicKey	internalGeneratePublic(java.security.spec.KeySpec keySpec) Generates a public key object from the provided key specification (key material).
protected java.security.spec.KeySpec	internalGetKeySpec(java.security.Key key, java.lang.Class keySpec) Returns a specification (key material) of the given key object in the requested format.

Methods inherited from class java.lang.Object

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

Constructor Detail

DHKeyFactory

public DHKeyFactory()

Method Detail

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 public key

Throws:

java.security.spec.InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a public key.

internalGeneratePublic

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

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

Parameters:

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

Returns:

the public key

Throws:

java.security.spec.InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a public key.

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

Returns:

the private key

Throws:

java.security.spec.InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a private key.

internalGeneratePrivate

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

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

Parameters:

keySpec - the specification (key material) of the private key

Returns:

the private key

Throws:

java.security.spec.InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a private key.

engineGetKeySpec

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

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

Specified by:

engineGetKeySpec in class java.security.KeyFactorySpi

Parameters:

key - the key

keySpec - 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).

internalGetKeySpec

protected java.security.spec.KeySpec internalGetKeySpec(java.security.Key key,
                                            java.lang.Class keySpec)
                                                 throws java.security.spec.InvalidKeySpecException

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

Parameters:

key - the key

keySpec - 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

This action is not allowed in this provider. This method is only here to be complient wiht the SUN JCE JCK tests. If a key is passed in, this method will basically return it back to you without doing any work.

Specified by:

engineTranslateKey in class java.security.KeyFactorySpi

Parameters:

key - the key.

Throws:

java.security.InvalidKeyException - if the given key is null.