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javax.crypto

Class SecretKeyFactorySpi

public abstract class SecretKeyFactorySpi
extends Object
The Service Provider Interface (SPI) for the SecretKeyFactory class.

Providers wishing to implement a secret key factory must subclass this and provide an appropriate implementation for all the abstract methods below, and provide an appropriate entry in the master Provider class (the service name for secret key factories is "SecretKeyFactory").

Since:
1.4
See Also:
SecretKeyFactory

Constructor Summary

SecretKeyFactorySpi()
Create a new secret key factory SPI.

Method Summary

protected abstract SecretKey
engineGenerateSecret(KeySpec keySpec)
Translate a java.security.KeySpec into a SecretKey.
protected abstract KeySpec
engineGetKeySpec(SecretKey key, Class<T> keySpec)
Translate a SecretKey into a java.security.KeySpec.
protected abstract SecretKey
engineTranslateKey(SecretKey key)
Translate a secret key into a different representation.

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SecretKeyFactorySpi

public SecretKeyFactorySpi()
Create a new secret key factory SPI.

Method Details

engineGenerateSecret

protected abstract SecretKey engineGenerateSecret(KeySpec keySpec)
            throws InvalidKeySpecException
Translate a java.security.KeySpec into a SecretKey.
Parameters:
keySpec - The key specification.
Returns:
The secret key.
Throws:
InvalidKeySpecException - If the key specification cannot be translated into a secret key.

engineGetKeySpec

protected abstract KeySpec engineGetKeySpec(SecretKey key,
                                            Class<T> keySpec)
            throws InvalidKeySpecException
Translate a SecretKey into a java.security.KeySpec.
Parameters:
key - The secret key.
keySpec - The desired key specification class.
Returns:
The key specification.
Throws:
InvalidKeySpecException - If the secret key cannot be translated into the desired key specification.

engineTranslateKey

protected abstract SecretKey engineTranslateKey(SecretKey key)
            throws InvalidKeyException
Translate a secret key into a different representation.
Parameters:
key - The secret key to translate.
Returns:
The translated key.
Throws:
InvalidKeyException - If the specified secret key cannot be translated.
SecretKeyFactorySpi.java -- Secret key factory service provider interface. Copyright (C) 2004 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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