+++ /dev/null
-/* KeyFactorySpi.java --- Key Factory Service Provider Interface
- Copyright (C) 1999 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., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 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.KeySpec;
-import java.security.spec.InvalidKeySpecException;
-
-/**
- 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 KeySpec engineGetKeySpec(Key key, Class keySpec)
- throws InvalidKeySpecException;
-
-
- /**
- Translates the key from an unknown or untrusted provider
- into a key for this key factory.
-
- @param the key from an unknown or untrusted provider
-
- @return the translated key
-
- @throws InvalidKeySpecException if the key cannot be
- processed by this key factory
- */
- protected abstract Key engineTranslateKey(Key key)
- throws InvalidKeyException;
-}