1 files changed, 112 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/assembly/ModeStage.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/assembly/ModeStage.java
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index 000000000..253ab4ae6
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+++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/assembly/ModeStage.java
@@ -0,0 +1,112 @@
+/* ModeStage.java -- 
+   Copyright (C) 2003, 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.assembly;
+
+import gnu.javax.crypto.mode.IMode;
+
+import java.security.InvalidKeyException;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * An {@link IMode} {@link Stage} in a {@link Cascade} Cipher chain.
+ * <p>
+ * Such a stage wraps an implementation of a Block Cipher Mode of Operation
+ * ({@link IMode}) to allow inclusion of such an instance in a cascade of block
+ * ciphers.
+ */
+class ModeStage
+    extends Stage
+{
+  private IMode delegate;
+
+  private transient Set cachedBlockSizes;
+
+  ModeStage(IMode mode, Direction forwardDirection)
+  {
+    super(forwardDirection);
+
+    delegate = mode;
+    cachedBlockSizes = null;
+  }
+
+  public Set blockSizes()
+  {
+    if (cachedBlockSizes == null)
+      {
+        HashSet result = new HashSet();
+        for (Iterator it = delegate.blockSizes(); it.hasNext();)
+          result.add(it.next());
+        cachedBlockSizes = Collections.unmodifiableSet(result);
+      }
+    return cachedBlockSizes;
+  }
+
+  void initDelegate(Map attributes) throws InvalidKeyException
+  {
+    Direction flow = (Direction) attributes.get(DIRECTION);
+    attributes.put(IMode.STATE,
+                   Integer.valueOf(flow.equals(forward) ? IMode.ENCRYPTION
+                                                        : IMode.DECRYPTION));
+    delegate.init(attributes);
+  }
+
+  public int currentBlockSize() throws IllegalStateException
+  {
+    return delegate.currentBlockSize();
+  }
+
+  void resetDelegate()
+  {
+    delegate.reset();
+  }
+
+  void updateDelegate(byte[] in, int inOffset, byte[] out, int outOffset)
+  {
+    delegate.update(in, inOffset, out, outOffset);
+  }
+
+  public boolean selfTest()
+  {
+    return delegate.selfTest();
+  }
+}