--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.corba/share/classes/sun/corba/SharedSecrets.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2012, 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 sun.corba;
+
+import java.lang.reflect.Field;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+
+import com.sun.corba.se.impl.io.ValueUtility;
+import sun.misc.Unsafe;
+
+/** A repository of "shared secrets", which are a mechanism for
+    calling implementation-private methods in another package without
+    using reflection. A package-private class implements a public
+    interface and provides the ability to call package-private methods
+    within that package; the object implementing that interface is
+    provided through a third package to which access is restricted.
+    This framework avoids the primary disadvantage of using reflection
+    for this purpose, namely the loss of compile-time checking. */
+
+// SharedSecrets cloned in corba repo to avoid build issues
+public class SharedSecrets {
+
+    /** Access to Unsafe to read/write fields. */
+    private static final Unsafe unsafe = AccessController.doPrivileged(
+            (PrivilegedAction<Unsafe>)() -> {
+                try {
+                    Field field = Unsafe.class.getDeclaredField("theUnsafe");
+                    field.setAccessible(true);
+                    return (Unsafe)field.get(null);
+
+                } catch (NoSuchFieldException |IllegalAccessException ex) {
+                    throw new InternalError("Unsafe.theUnsafe field not available", ex);
+                }
+            }
+    );
+
+    private static JavaCorbaAccess javaCorbaAccess;
+
+    public static JavaCorbaAccess getJavaCorbaAccess() {
+        if (javaCorbaAccess == null) {
+            // Ensure ValueUtility is initialized; we know that that class
+            // provides the shared secret
+            unsafe.ensureClassInitialized(ValueUtility.class);
+        }
+        return javaCorbaAccess;
+    }
+
+    public static void setJavaCorbaAccess(JavaCorbaAccess access) {
+        javaCorbaAccess = access;
+    }
+
+}