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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/crypto/jce/key/SecretKeyFactoryImpl.java
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+/* 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());
+ }
+}