| /* |
| * Copyright (c) 1997, 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.security.ssl; |
| |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.math.BigInteger; |
| import javax.net.ssl.SSLHandshakeException; |
| |
| /* |
| * Message used by clients to send their Diffie-Hellman public |
| * keys to servers. |
| * |
| * @author David Brownell |
| */ |
| final class DHClientKeyExchange extends HandshakeMessage { |
| |
| @Override |
| int messageType() { |
| return ht_client_key_exchange; |
| } |
| |
| /* |
| * This value may be empty if it was included in the |
| * client's certificate ... |
| */ |
| private byte[] dh_Yc; // 1 to 2^16 -1 bytes |
| |
| BigInteger getClientPublicKey() { |
| return dh_Yc == null ? null : new BigInteger(1, dh_Yc); |
| } |
| |
| /* |
| * Either pass the client's public key explicitly (because it's |
| * using DHE or DH_anon), or implicitly (the public key was in the |
| * certificate). |
| */ |
| DHClientKeyExchange(BigInteger publicKey) { |
| dh_Yc = toByteArray(publicKey); |
| } |
| |
| DHClientKeyExchange() { |
| dh_Yc = null; |
| } |
| |
| /* |
| * Get the client's public key either explicitly or implicitly. |
| * (It's ugly to have an empty record be sent in the latter case, |
| * but that's what the protocol spec requires.) |
| */ |
| DHClientKeyExchange(HandshakeInStream input) throws IOException { |
| if (input.available() >= 2) { |
| dh_Yc = input.getBytes16(); |
| } else { |
| // currently, we don't support cipher suites that requires |
| // implicit public key of client. |
| throw new SSLHandshakeException( |
| "Unsupported implicit client DiffieHellman public key"); |
| } |
| } |
| |
| @Override |
| int messageLength() { |
| if (dh_Yc == null) { |
| return 0; |
| } else { |
| return dh_Yc.length + 2; |
| } |
| } |
| |
| @Override |
| void send(HandshakeOutStream s) throws IOException { |
| if (dh_Yc != null && dh_Yc.length != 0) { |
| s.putBytes16(dh_Yc); |
| } |
| } |
| |
| @Override |
| void print(PrintStream s) throws IOException { |
| s.println("*** ClientKeyExchange, DH"); |
| |
| if (debug != null && Debug.isOn("verbose")) { |
| Debug.println(s, "DH Public key", dh_Yc); |
| } |
| } |
| } |