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diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/security/sig/BaseSignature.java b/gcc-4.4.3/libjava/classpath/gnu/java/security/sig/BaseSignature.java
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index 000000000..9c76cacba
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+++ b/gcc-4.4.3/libjava/classpath/gnu/java/security/sig/BaseSignature.java
@@ -0,0 +1,219 @@
+/* BaseSignature.java -- 
+   Copyright (C) 2001, 2002, 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.java.security.sig;
+
+import gnu.java.security.hash.IMessageDigest;
+import gnu.java.security.prng.IRandom;
+import gnu.java.security.prng.LimitReachedException;
+import gnu.java.security.util.PRNG;
+
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.util.Map;
+import java.util.Random;
+
+/**
+ * A base abstract class to facilitate implementations of concrete Signatures.
+ */
+public abstract class BaseSignature
+    implements ISignature
+{
+  /** The canonical name of this signature scheme. */
+  protected String schemeName;
+
+  /** The underlying message digest instance for this signature scheme. */
+  protected IMessageDigest md;
+
+  /** The public key to use when verifying signatures. */
+  protected PublicKey publicKey;
+
+  /** The private key to use when generating signatures (signing). */
+  protected PrivateKey privateKey;
+
+  /** The optional {@link Random} instance to use. */
+  private Random rnd;
+
+  /** The optional {@link IRandom} instance to use. */
+  private IRandom irnd;
+
+  /** Our default source of randomness. */
+  private PRNG prng = null;
+
+  /**
+   * Trivial constructor.
+   * 
+   * @param schemeName the name of this signature scheme.
+   * @param md the underlying instance of the message digest algorithm.
+   * @throws IllegalArgumentException if the designated hash instance is
+   *           <code>null</code>.
+   */
+  protected BaseSignature(String schemeName, IMessageDigest md)
+  {
+    super();
+
+    this.schemeName = schemeName;
+    if (md == null)
+      throw new IllegalArgumentException("Message digest MUST NOT be null");
+
+    this.md = md;
+  }
+
+  public String name()
+  {
+    return schemeName + "-" + md.name();
+  }
+
+  public void setupVerify(Map attributes) throws IllegalArgumentException
+  {
+    setup(attributes);
+    // do we have a public key?
+    PublicKey key = (PublicKey) attributes.get(VERIFIER_KEY);
+    if (key != null)
+      setupForVerification(key);
+  }
+
+  public void setupSign(Map attributes) throws IllegalArgumentException
+  {
+    setup(attributes);
+    // do we have a private key?
+    PrivateKey key = (PrivateKey) attributes.get(SIGNER_KEY);
+    if (key != null)
+      setupForSigning(key);
+  }
+
+  public void update(byte b)
+  {
+    if (md == null)
+      throw new IllegalStateException();
+
+    md.update(b);
+  }
+
+  public void update(byte[] b, int off, int len)
+  {
+    if (md == null)
+      throw new IllegalStateException();
+
+    md.update(b, off, len);
+  }
+
+  public Object sign()
+  {
+    if (md == null || privateKey == null)
+      throw new IllegalStateException();
+
+    return generateSignature();
+  }
+
+  public boolean verify(Object sig)
+  {
+    if (md == null || publicKey == null)
+      throw new IllegalStateException();
+
+    return verifySignature(sig);
+  }
+
+  public abstract Object clone();
+
+  protected abstract void setupForVerification(PublicKey key)
+      throws IllegalArgumentException;
+
+  protected abstract void setupForSigning(PrivateKey key)
+      throws IllegalArgumentException;
+
+  protected abstract Object generateSignature() throws IllegalStateException;
+
+  protected abstract boolean verifySignature(Object signature)
+      throws IllegalStateException;
+
+  /** Initialises the internal fields of this instance. */
+  protected void init()
+  {
+    md.reset();
+    rnd = null;
+    irnd = null;
+    publicKey = null;
+    privateKey = null;
+  }
+
+  /**
+   * Fills the designated byte array with random data.
+   * 
+   * @param buffer the byte array to fill with random data.
+   */
+  protected void nextRandomBytes(byte[] buffer)
+  {
+    if (rnd != null)
+      rnd.nextBytes(buffer);
+    else if (irnd != null)
+      try
+        {
+          irnd.nextBytes(buffer, 0, buffer.length);
+        }
+      catch (IllegalStateException x)
+        {
+          throw new RuntimeException("nextRandomBytes(): " + x);
+        }
+      catch (LimitReachedException x)
+        {
+          throw new RuntimeException("nextRandomBytes(): " + x);
+        }
+    else
+      getDefaultPRNG().nextBytes(buffer);
+  }
+
+  private void setup(Map attributes)
+  {
+    init();
+    // do we have a Random or SecureRandom, or should we use our own?
+    Object obj = attributes.get(SOURCE_OF_RANDOMNESS);
+    if (obj instanceof Random)
+      rnd = (Random) obj;
+    else if (obj instanceof IRandom)
+      irnd = (IRandom) obj;
+  }
+
+  private PRNG getDefaultPRNG()
+  {
+    if (prng == null)
+      prng = PRNG.getInstance();
+
+    return prng;
+  }
+}