obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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1 files changed, 145 insertions, 0 deletions

diff --git a/libjava/classpath/gnu/javax/crypto/kwa/BaseKeyWrappingAlgorithm.java b/libjava/classpath/gnu/javax/crypto/kwa/BaseKeyWrappingAlgorithm.java
new file mode 100644
index 000000000..80b114a02
--- /dev/null
+++ b/libjava/classpath/gnu/javax/crypto/kwa/BaseKeyWrappingAlgorithm.java
@@ -0,0 +1,145 @@
+/* BaseKeyWrappingAlgorithm.java -- FIXME: briefly describe file purpose
+   Copyright (C) 2006 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 gnu.javax.crypto.kwa;
+
+import gnu.java.security.util.PRNG;
+
+import java.security.InvalidKeyException;
+import java.util.Collections;
+import java.util.Map;
+
+import javax.crypto.ShortBufferException;
+
+/**
+ * A base class to facilitate implementation of concrete Key Wrapping
+ * Algorithms.
+ */
+public abstract class BaseKeyWrappingAlgorithm
+     implements IKeyWrappingAlgorithm
+{
+  /** The canonical name of the key wrapping algorithm. */
+  protected String name;
+  /** A source of randomness if/when needed by concrete implementations. */
+  private PRNG prng;
+
+  /**
+   * Protected constructor.
+   *
+   * @param name the key wrapping algorithm canonical name.
+   */
+  protected BaseKeyWrappingAlgorithm(String name)
+  {
+    super();
+  }
+
+  public String name()
+  {
+    return this.name;
+  }
+
+  public void init(Map attributes) throws InvalidKeyException
+  {
+    if (attributes == null)
+      attributes = Collections.EMPTY_MAP;
+
+    engineInit(attributes);
+  }
+
+  public int wrap(byte[] in, int inOffset, int length, byte[] out, int outOffset)
+      throws ShortBufferException
+  {
+    if (outOffset < 0)
+      throw new IllegalArgumentException("Output offset MUST NOT be negative");
+    byte[] result = wrap(in, inOffset, length);
+    if (outOffset + result.length > out.length)
+      throw new ShortBufferException();
+    System.arraycopy(result, 0, out, outOffset, result.length);
+    return result.length;
+  }
+
+  public byte[] wrap(byte[] in, int inOffset, int length)
+  {
+    if (inOffset < 0)
+      throw new IllegalArgumentException("Input offset MUST NOT be negative");
+    if (length < 0)
+      throw new IllegalArgumentException("Input length MUST NOT be negative");
+
+    return engineWrap(in, inOffset, length);
+  }
+
+  public int unwrap(byte[] in, int inOffset, int length,
+                    byte[] out, int outOffset)
+      throws ShortBufferException, KeyUnwrappingException
+  {
+    if (outOffset < 0)
+      throw new IllegalArgumentException("Output offset MUST NOT be negative");
+    byte[] result = engineUnwrap(in, inOffset, length);
+    if (outOffset + result.length > out.length)
+      throw new ShortBufferException();
+    System.arraycopy(result, 0, out, outOffset, result.length);
+    return result.length;
+  }
+
+  public byte[] unwrap(byte[] in, int inOffset, int length)
+      throws KeyUnwrappingException
+  {
+    if (inOffset < 0)
+      throw new IllegalArgumentException("Input offset MUST NOT be negative");
+    if (length < 0)
+      throw new IllegalArgumentException("Input length MUST NOT be negative");
+
+    return engineUnwrap(in, inOffset, length);
+  }
+
+  protected abstract void engineInit(Map attributes) throws InvalidKeyException;
+
+  protected abstract byte[] engineWrap(byte[] in, int inOffset, int length);
+
+  protected abstract byte[] engineUnwrap(byte[] in, int inOffset, int length)
+      throws KeyUnwrappingException;
+
+  /** @return a strong pseudo-random number generator if/when needed. */
+  protected PRNG getDefaultPRNG()
+  {
+    if (prng == null)
+      prng = PRNG.getInstance();
+
+    return prng;
+  }
+}