mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-30 19:53:46 +00:00
135 lines
4.4 KiB
Java
135 lines
4.4 KiB
Java
/* KeyFactorySpi.java --- Key Factory Service Provider Interface
|
|
Copyright (C) 1999, 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. */
|
|
|
|
|
|
package java.security;
|
|
|
|
import java.security.spec.InvalidKeySpecException;
|
|
import java.security.spec.KeySpec;
|
|
|
|
/**
|
|
* KeyFactorySpi is the Service Provider Interface (SPI) for the
|
|
* KeyFactory class. This is the interface for providers to
|
|
* supply to implement a key factory for an algorithm.
|
|
*
|
|
* Key factories are used to convert keys (opaque cryptographic
|
|
* keys of type Key) into key specifications (transparent
|
|
* representations of the underlying key material).
|
|
*
|
|
* Key factories are bi-directional. They allow a key class
|
|
* to be converted into a key specification (key material) and
|
|
* back again.
|
|
*
|
|
* For example DSA public keys can be specified as
|
|
* DSAPublicKeySpec or X509EncodedKeySpec. The key factory
|
|
* translate these key specifications.
|
|
*
|
|
* @since JDK 1.2
|
|
* @author Mark Benvenuto
|
|
*/
|
|
public abstract class KeyFactorySpi
|
|
{
|
|
/**
|
|
* Constucts a new KeyFactorySpi.
|
|
*/
|
|
public KeyFactorySpi()
|
|
{
|
|
}
|
|
|
|
/**
|
|
* Generates a public key from the provided key specification.
|
|
*
|
|
* @param keySpec key specification
|
|
*
|
|
* @return the public key
|
|
*
|
|
* @throws InvalidKeySpecException invalid key specification for
|
|
* this key factory to produce a public key
|
|
*/
|
|
protected abstract PublicKey engineGeneratePublic(KeySpec keySpec)
|
|
throws InvalidKeySpecException;
|
|
|
|
|
|
/**
|
|
* Generates a private key from the provided key specification.
|
|
*
|
|
* @param keySpec key specification
|
|
*
|
|
* @return the private key
|
|
*
|
|
* @throws InvalidKeySpecException invalid key specification for
|
|
* this key factory to produce a private key
|
|
*/
|
|
protected abstract PrivateKey engineGeneratePrivate(KeySpec keySpec)
|
|
throws InvalidKeySpecException;
|
|
|
|
/**
|
|
* Returns a key specification for the given key. keySpec
|
|
* identifies the specification class to return the key
|
|
* material in.
|
|
*
|
|
* @param key the key
|
|
* @param keySpec the specification class to return the
|
|
* key material in.
|
|
*
|
|
* @return the key specification in an instance of the requested
|
|
* specification class
|
|
*
|
|
* @throws InvalidKeySpecException the requested key specification
|
|
* is inappropriate for this key or the key is
|
|
* unrecognized.
|
|
*/
|
|
protected abstract <T extends KeySpec> T engineGetKeySpec(Key key,
|
|
Class<T> keySpec)
|
|
throws InvalidKeySpecException;
|
|
|
|
|
|
/**
|
|
* Translates the key from an unknown or untrusted provider
|
|
* into a key for this key factory.
|
|
*
|
|
* @param key key from an unknown or untrusted provider
|
|
*
|
|
* @return the translated key
|
|
*
|
|
* @throws InvalidKeyException if the key cannot be
|
|
* processed by this key factory
|
|
*/
|
|
protected abstract Key engineTranslateKey(Key key)
|
|
throws InvalidKeyException;
|
|
}
|