1 /* 2 * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.security.ssl; 27 28 import java.io.IOException; 29 import java.io.PrintStream; 30 31 import java.security.PublicKey; 32 import java.security.interfaces.ECPublicKey; 33 import java.security.spec.*; 34 35 /** 36 * ClientKeyExchange message for all ECDH based key exchange methods. It 37 * contains the client's ephemeral public value. 38 * 39 * @since 1.6 40 * @author Andreas Sterbenz 41 */ 42 final class ECDHClientKeyExchange extends HandshakeMessage { 43 44 @Override 45 int messageType() { 46 return ht_client_key_exchange; 47 } 48 49 private byte[] encodedPoint; 50 51 byte[] getEncodedPoint() { 52 return encodedPoint; 53 } 54 55 // Called by the client with its ephemeral public key. 56 ECDHClientKeyExchange(PublicKey publicKey) { 57 ECPublicKey ecKey = (ECPublicKey)publicKey; 58 ECPoint point = ecKey.getW(); 59 ECParameterSpec params = ecKey.getParams(); 60 encodedPoint = JsseJce.encodePoint(point, params.getCurve()); 61 } 62 63 ECDHClientKeyExchange(HandshakeInStream input) throws IOException { 64 encodedPoint = input.getBytes8(); 65 } 66 67 @Override 68 int messageLength() { 69 return encodedPoint.length + 1; 70 } 71 72 @Override 73 void send(HandshakeOutStream s) throws IOException { 74 s.putBytes8(encodedPoint); 75 } 76 77 @Override 78 void print(PrintStream s) throws IOException { 79 s.println("*** ECDHClientKeyExchange"); 80 81 if (debug != null && Debug.isOn("verbose")) { 82 Debug.println(s, "ECDH Public value", encodedPoint); 83 } 84 } 85 }