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diff --git a/libjava/gnu/java/security/provider/RSAKeyFactory.java b/libjava/gnu/java/security/provider/RSAKeyFactory.java
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+/* RSAKeyFactory.java -- RSA key factory.
+   Copyright (C) 2004  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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.provider;
+
+import java.security.InvalidKeyException;
+import java.security.Key;
+import java.security.KeyFactorySpi;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+
+import java.security.interfaces.RSAPrivateCrtKey;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.interfaces.RSAPublicKey;
+
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.KeySpec;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.security.spec.RSAPrivateCrtKeySpec;
+import java.security.spec.RSAPrivateKeySpec;
+import java.security.spec.RSAPublicKeySpec;
+import java.security.spec.X509EncodedKeySpec;
+
+public class RSAKeyFactory extends KeyFactorySpi
+{
+
+  // Default constructor.
+  // -------------------------------------------------------------------------
+
+  // Instance methods.
+  // -------------------------------------------------------------------------
+
+  protected PrivateKey engineGeneratePrivate(KeySpec spec)
+    throws InvalidKeySpecException
+  {
+    if (spec instanceof RSAPrivateCrtKeySpec)
+      {
+        return new GnuRSAPrivateKey((RSAPrivateCrtKeySpec) spec);
+      }
+    if (spec instanceof RSAPrivateKeySpec)
+      {
+        return new GnuRSAPrivateKey(new RSAPrivateCrtKeySpec(
+          ((RSAPrivateKeySpec) spec).getModulus(), null,
+          ((RSAPrivateKeySpec) spec).getPrivateExponent(), null,
+          null, null, null, null));
+      }
+    if (spec instanceof PKCS8EncodedKeySpec)
+      {
+        EncodedKeyFactory ekf = new EncodedKeyFactory();
+        PrivateKey pk = ekf.engineGeneratePrivate(spec);
+        if (pk instanceof RSAPrivateKey)
+          return pk;
+      }
+    throw new InvalidKeySpecException();
+  }
+
+  protected PublicKey engineGeneratePublic(KeySpec spec)
+    throws InvalidKeySpecException
+  {
+    if (spec instanceof RSAPublicKeySpec)
+      {
+        return new GnuRSAPublicKey((RSAPublicKeySpec) spec);
+      }
+    if (spec instanceof X509EncodedKeySpec)
+      {
+        EncodedKeyFactory ekf = new EncodedKeyFactory();
+        PublicKey pk = ekf.engineGeneratePublic(spec);
+        if (pk instanceof RSAPublicKey)
+          return pk;
+      }
+    throw new InvalidKeySpecException();
+  }
+
+  protected KeySpec engineGetKeySpec(Key key, Class keySpec)
+    throws InvalidKeySpecException
+  {
+    if (keySpec.isAssignableFrom(RSAPrivateCrtKeySpec.class)
+        && (key instanceof RSAPrivateCrtKey))
+      {
+        return new RSAPrivateCrtKeySpec(
+          ((RSAPrivateCrtKey) key).getModulus(),
+          ((RSAPrivateCrtKey) key).getPublicExponent(),
+          ((RSAPrivateCrtKey) key).getPrivateExponent(),
+          ((RSAPrivateCrtKey) key).getPrimeP(),
+          ((RSAPrivateCrtKey) key).getPrimeQ(),
+          ((RSAPrivateCrtKey) key).getPrimeExponentP(),
+          ((RSAPrivateCrtKey) key).getPrimeExponentQ(),
+          ((RSAPrivateCrtKey) key).getCrtCoefficient());
+      }
+    if (keySpec.isAssignableFrom(RSAPrivateKeySpec.class)
+        && (key instanceof RSAPrivateKey))
+      {
+        return new RSAPrivateKeySpec(
+          ((RSAPrivateCrtKey) key).getModulus(),
+          ((RSAPrivateCrtKey) key).getPrivateExponent());
+      }
+    if (keySpec.isAssignableFrom(RSAPublicKeySpec.class)
+        && (key instanceof RSAPublicKey))
+      {
+        return new RSAPublicKeySpec(
+          ((RSAPrivateCrtKey) key).getModulus(),
+          ((RSAPrivateCrtKey) key).getPublicExponent());
+      }
+    if (keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class)
+        && key.getFormat().equalsIgnoreCase("PKCS#8"))
+      {
+        return new PKCS8EncodedKeySpec(key.getEncoded());
+      }
+    if (keySpec.isAssignableFrom(X509EncodedKeySpec.class)
+        && key.getFormat().equalsIgnoreCase("X.509"))
+      {
+        return new X509EncodedKeySpec(key.getEncoded());
+      }
+    throw new InvalidKeySpecException();
+  }
+
+  protected Key engineTranslateKey(Key key) throws InvalidKeyException
+  {
+    if (key instanceof RSAPrivateCrtKey)
+      {
+        return new GnuRSAPrivateKey(new RSAPrivateCrtKeySpec(
+          ((RSAPrivateCrtKey) key).getModulus(),
+          ((RSAPrivateCrtKey) key).getPublicExponent(),
+          ((RSAPrivateCrtKey) key).getPrivateExponent(),
+          ((RSAPrivateCrtKey) key).getPrimeP(),
+          ((RSAPrivateCrtKey) key).getPrimeQ(),
+          ((RSAPrivateCrtKey) key).getPrimeExponentP(),
+          ((RSAPrivateCrtKey) key).getPrimeExponentQ(),
+          ((RSAPrivateCrtKey) key).getCrtCoefficient()));
+      }
+    if (key instanceof RSAPrivateKey)
+      {
+        return new GnuRSAPrivateKey(new RSAPrivateCrtKeySpec(
+          ((RSAPrivateKey) key).getModulus(), null,
+          ((RSAPrivateKey) key).getPrivateExponent(), null,
+          null, null, null, null));
+      }
+    if (key instanceof RSAPublicKey)
+      {
+        return new GnuRSAPublicKey(new RSAPublicKeySpec(
+          ((RSAPrivateCrtKey) key).getModulus(),
+          ((RSAPrivateCrtKey) key).getPublicExponent()));
+      }
+    throw new InvalidKeyException();
+  }
+}