--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/sun/security/ssl/ServerKeyExchange.java	Mon Jun 25 13:41:39 2018 -0700
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2018, 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.security.ssl;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Map;
+import sun.security.ssl.SSLHandshake.HandshakeMessage;
+
+/**
+ * Pack of the ServerKeyExchange handshake message.
+ */
+final class ServerKeyExchange {
+    static final SSLConsumer handshakeConsumer =
+        new ServerKeyExchangeConsumer();
+    static final HandshakeProducer handshakeProducer =
+        new ServerKeyExchangeProducer();
+
+    /**
+     * The "ServerKeyExchange" handshake message producer.
+     */
+    private static final
+            class ServerKeyExchangeProducer implements HandshakeProducer {
+        // Prevent instantiation of this class.
+        private ServerKeyExchangeProducer() {
+            // blank
+        }
+
+        @Override
+        public byte[] produce(ConnectionContext context,
+                HandshakeMessage message) throws IOException {
+            // The producing happens in server side only.
+            ServerHandshakeContext shc = (ServerHandshakeContext)context;
+
+            SSLKeyExchange ke = SSLKeyExchange.valueOf(
+                    shc.negotiatedCipherSuite.keyExchange,
+                    shc.negotiatedProtocol);
+            if (ke != null) {
+                for (Map.Entry<Byte, HandshakeProducer> hc :
+                        ke.getHandshakeProducers(shc)) {
+                    if (hc.getKey() == SSLHandshake.SERVER_KEY_EXCHANGE.id) {
+                        return hc.getValue().produce(context, message);
+                    }
+                }
+            }
+
+            // not producer defined.
+            shc.conContext.fatal(Alert.HANDSHAKE_FAILURE,
+                    "No ServerKeyExchange handshake message can be produced.");
+            return null;    // make the compiler happe
+        }
+    }
+
+    /**
+     * The "ServerKeyExchange" handshake message consumer.
+     */
+    private static final
+            class ServerKeyExchangeConsumer implements SSLConsumer {
+        // Prevent instantiation of this class.
+        private ServerKeyExchangeConsumer() {
+            // blank
+        }
+
+        @Override
+        public void consume(ConnectionContext context,
+                ByteBuffer message) throws IOException {
+            // The consuming happens in client side only.
+            ClientHandshakeContext chc = (ClientHandshakeContext)context;
+
+            // clean up this consumer
+            chc.handshakeConsumers.remove(SSLHandshake.SERVER_KEY_EXCHANGE.id);
+
+            SSLKeyExchange ke = SSLKeyExchange.valueOf(
+                    chc.negotiatedCipherSuite.keyExchange,
+                    chc.negotiatedProtocol);
+            if (ke != null) {
+                for (Map.Entry<Byte, SSLConsumer> hc :
+                        ke.getHandshakeConsumers(chc)) {
+                    if (hc.getKey() == SSLHandshake.SERVER_KEY_EXCHANGE.id) {
+                        hc.getValue().consume(context, message);
+                        return;
+                    }
+                }
+            }
+
+            // no consumer defined.
+            chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE,
+                        "Unexpected ServerKeyExchange handshake message.");
+        }
+    }
+}
+