| /* SecretKeyFactoryImpl.java -- simple byte array-wrapping factory. |
| Copyright (C) 2004, 2006 Free Software Foundation, Inc. |
| |
| This file is a 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 of the License, 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; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, 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 gnu.javax.crypto.jce.key; |
| |
| import java.security.InvalidKeyException; |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.KeySpec; |
| |
| import javax.crypto.SecretKey; |
| import javax.crypto.SecretKeyFactorySpi; |
| import javax.crypto.spec.SecretKeySpec; |
| |
| public abstract class SecretKeyFactoryImpl |
| extends SecretKeyFactorySpi |
| { |
| |
| protected SecretKeyFactoryImpl() |
| { |
| } |
| |
| protected SecretKey engineGenerateSecret(KeySpec spec) |
| throws InvalidKeySpecException |
| { |
| if (spec instanceof SecretKeySpec) |
| return (SecretKey) spec; |
| throw new InvalidKeySpecException("unknown key spec: " |
| + spec.getClass().getName()); |
| } |
| |
| protected KeySpec engineGetKeySpec(SecretKey key, Class spec) |
| throws InvalidKeySpecException |
| { |
| if (spec.equals(SecretKeySpec.class)) |
| { |
| if (key instanceof SecretKeySpec) |
| return (KeySpec) key; |
| else |
| return new SecretKeySpec(key.getEncoded(), key.getAlgorithm()); |
| } |
| throw new InvalidKeySpecException("unsupported key spec: " + spec.getName()); |
| } |
| |
| protected SecretKey engineTranslateKey(SecretKey key) |
| throws InvalidKeyException |
| { |
| if (! "RAW".equals(key.getFormat())) |
| throw new InvalidKeyException("only raw keys are supported"); |
| // SecretKeySpec is good enough for our purposes. |
| return new SecretKeySpec(key.getEncoded(), key.getAlgorithm()); |
| } |
| } |