--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/com/sun/crypto/provider/DESedeKeyFactory.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.crypto.provider;
+
+import javax.crypto.SecretKey;
+import javax.crypto.SecretKeyFactorySpi;
+import javax.crypto.spec.DESedeKeySpec;
+import java.security.InvalidKeyException;
+import java.security.spec.KeySpec;
+import java.security.spec.InvalidKeySpecException;
+import javax.crypto.spec.SecretKeySpec;
+
+/**
+ * This class implements the DES-EDE key factory of the Sun provider.
+ *
+ * @author Jan Luehe
+ *
+ */
+
+public final class DESedeKeyFactory extends SecretKeyFactorySpi {
+
+    /**
+     * Empty constructor
+     */
+    public DESedeKeyFactory() {
+    }
+
+    /**
+     * Generates a <code>SecretKey</code> object from the provided key
+     * specification (key material).
+     *
+     * @param keySpec the specification (key material) of the secret key
+     *
+     * @return the secret key
+     *
+     * @exception InvalidKeySpecException if the given key specification
+     * is inappropriate for this key factory to produce a public key.
+     */
+    protected SecretKey engineGenerateSecret(KeySpec keySpec)
+        throws InvalidKeySpecException {
+
+        try {
+            if (keySpec instanceof DESedeKeySpec) {
+                return new DESedeKey(((DESedeKeySpec)keySpec).getKey());
+            }
+            if (keySpec instanceof SecretKeySpec) {
+                return new DESedeKey(((SecretKeySpec)keySpec).getEncoded());
+
+            }
+            throw new InvalidKeySpecException
+                ("Inappropriate key specification");
+        } catch (InvalidKeyException e) {
+            throw new InvalidKeySpecException(e.getMessage());
+        }
+    }
+
+    /**
+     * Returns a specification (key material) of the given key
+     * in the requested format.
+     *
+     * @param key the key
+     *
+     * @param keySpec the requested format in which the key material shall be
+     * returned
+     *
+     * @return the underlying key specification (key material) in the
+     * requested format
+     *
+     * @exception InvalidKeySpecException if the requested key specification is
+     * inappropriate for the given key, or the given key cannot be processed
+     * (e.g., the given key has an unrecognized algorithm or format).
+     */
+    protected KeySpec engineGetKeySpec(SecretKey key, Class<?> keySpec)
+        throws InvalidKeySpecException {
+
+        try {
+            if ((key instanceof SecretKey)
+                && (key.getAlgorithm().equalsIgnoreCase("DESede"))
+                && (key.getFormat().equalsIgnoreCase("RAW"))) {
+
+                // Check if requested key spec is amongst the valid ones
+                if (DESedeKeySpec.class.isAssignableFrom(keySpec)) {
+                    return new DESedeKeySpec(key.getEncoded());
+
+                } else {
+                    throw new InvalidKeySpecException
+                        ("Inappropriate key specification");
+                }
+
+            } else {
+                throw new InvalidKeySpecException
+                    ("Inappropriate key format/algorithm");
+            }
+        } catch (InvalidKeyException e) {
+            throw new InvalidKeySpecException("Secret key has wrong size");
+        }
+    }
+
+    /**
+     * Translates a <code>SecretKey</code> object, whose provider may be
+     * unknown or potentially untrusted, into a corresponding
+     * <code>SecretKey</code> object of this key factory.
+     *
+     * @param key the key whose provider is unknown or untrusted
+     *
+     * @return the translated key
+     *
+     * @exception InvalidKeyException if the given key cannot be processed by
+     * this key factory.
+     */
+    protected SecretKey engineTranslateKey(SecretKey key)
+        throws InvalidKeyException {
+
+        try {
+
+            if ((key != null)
+                && (key.getAlgorithm().equalsIgnoreCase("DESede"))
+                && (key.getFormat().equalsIgnoreCase("RAW"))) {
+                // Check if key originates from this factory
+                if (key instanceof com.sun.crypto.provider.DESedeKey) {
+                    return key;
+                }
+                // Convert key to spec
+                DESedeKeySpec desEdeKeySpec
+                    = (DESedeKeySpec)engineGetKeySpec(key,
+                                                      DESedeKeySpec.class);
+                // Create key from spec, and return it
+                return engineGenerateSecret(desEdeKeySpec);
+
+            } else {
+                throw new InvalidKeyException
+                    ("Inappropriate key format/algorithm");
+            }
+
+        } catch (InvalidKeySpecException e) {
+            throw new InvalidKeyException("Cannot translate key");
+        }
+    }
+}