com.ibm.crypto.fips.provider

Class DSAKeyFactory

java.lang.Object

java.security.KeyFactorySpi

com.ibm.crypto.fips.provider.DSAKeyFactory

public final class DSAKeyFactory
extends java.security.KeyFactorySpi

This class is a concrete implementaion of key factory for DSA.

Constructor Summary

Constructors

Constructor and Description
DSAKeyFactory() Constructs a new instance of this class.

Method Summary

Methods

Modifier and Type	Method and Description
protected java.security.PrivateKey	engineGeneratePrivate(java.security.spec.KeySpec keySpec) Generates a private key for the given key specification.
protected java.security.PublicKey	engineGeneratePublic(java.security.spec.KeySpec keySpec) Generates a public key for the given key specification.
protected java.security.spec.KeySpec	engineGetKeySpec(java.security.Key key, java.lang.Class keySpec) Answers a key specification for a given key.
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 for the given key specification.
protected java.security.PublicKey	internalGeneratePublic(java.security.spec.KeySpec keySpec) Generates a public key for the given key specification.
protected java.security.spec.KeySpec	internalGetKeySpec(java.security.Key key, java.lang.Class keySpec) Answers a key specification for a given key.

Methods inherited from class java.lang.Object

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

Constructor Detail

DSAKeyFactory

public DSAKeyFactory()

Constructs a new instance of this class.

Method Detail

engineGeneratePrivate

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

Generates a private key for the given key specification.

Specified by:

engineGeneratePrivate in class java.security.KeyFactorySpi

Parameters:

keySpec - KeySpec the key specification to be used for key generation.

Returns:

PrivateKey the newly created DSA private key

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

internalGeneratePrivate

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

Generates a private key for the given key specification.

Parameters:

keySpec - KeySpec the key specification to be used for key generation.

Returns:

PrivateKey the newly created DSA private key

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate

engineGeneratePublic

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

Generates a public key for the given key specification.

Specified by:

engineGeneratePublic in class java.security.KeyFactorySpi

Parameters:

keySpec - KeySpec the key specification to be used for key generation.

Returns:

PublicKey the newly created public key

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

internalGeneratePublic

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

Generates a public key for the given key specification.

Parameters:

keySpec - KeySpec the key specification to be used for key generation.

Returns:

PublicKey the newly created public key

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate

engineGetKeySpec

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

Answers a key specification for a given key.

Specified by:

engineGetKeySpec in class java.security.KeyFactorySpi

Parameters:

key - Key the key for which the specification is to be computed.

keySpec - Class the class of the result specification

Returns:

a key specification for a given key. The class of the result object will be keySpec.

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

internalGetKeySpec

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

Answers a key specification for a given key.

Parameters:

key - Key the key for which the specification is to be computed.

keySpec - Class the class of the result specification

Returns:

a key specification for a given key. The class of the result object will be keySpec.

Throws:

java.security.spec.InvalidKeySpecException - if the provided key specification is not appropriate

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.