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/*
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.ssl;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.security.AlgorithmConstraints;
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import java.security.CryptoPrimitive;
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import java.security.GeneralSecurityException;
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import java.security.KeyFactory;
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import java.security.PrivateKey;
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import java.security.PublicKey;
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import java.security.interfaces.ECPrivateKey;
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import java.security.interfaces.ECPublicKey;
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import java.security.spec.ECParameterSpec;
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import java.security.spec.ECPoint;
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import java.security.spec.ECPublicKeySpec;
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import java.text.MessageFormat;
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import java.util.EnumSet;
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import java.util.Locale;
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import javax.crypto.SecretKey;
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import javax.net.ssl.SSLHandshakeException;
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import sun.security.ssl.ECDHKeyExchange.ECDHECredentials;
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import sun.security.ssl.ECDHKeyExchange.ECDHEPossession;
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import sun.security.ssl.SSLHandshake.HandshakeMessage;
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import sun.security.ssl.SupportedGroupsExtension.NamedGroup;
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import sun.security.ssl.X509Authentication.X509Credentials;
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import sun.security.ssl.X509Authentication.X509Possession;
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import sun.security.util.HexDumpEncoder;
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/**
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* Pack of the "ClientKeyExchange" handshake message.
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*/
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final class ECDHClientKeyExchange {
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static final SSLConsumer ecdhHandshakeConsumer =
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new ECDHClientKeyExchangeConsumer();
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static final HandshakeProducer ecdhHandshakeProducer =
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new ECDHClientKeyExchangeProducer();
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static final SSLConsumer ecdheHandshakeConsumer =
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new ECDHEClientKeyExchangeConsumer();
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static final HandshakeProducer ecdheHandshakeProducer =
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new ECDHEClientKeyExchangeProducer();
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/**
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* The ECDH/ECDHE ClientKeyExchange handshake message.
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*/
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private static final
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class ECDHClientKeyExchangeMessage extends HandshakeMessage {
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private final byte[] encodedPoint;
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ECDHClientKeyExchangeMessage(HandshakeContext handshakeContext,
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ECPublicKey publicKey) {
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super(handshakeContext);
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ECPoint point = publicKey.getW();
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ECParameterSpec params = publicKey.getParams();
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encodedPoint = JsseJce.encodePoint(point, params.getCurve());
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}
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ECDHClientKeyExchangeMessage(HandshakeContext handshakeContext,
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ByteBuffer m) throws IOException {
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super(handshakeContext);
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if (m.remaining() != 0) { // explicit PublicValueEncoding
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this.encodedPoint = Record.getBytes8(m);
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} else {
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this.encodedPoint = new byte[0];
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}
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}
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// Check constraints of the specified EC public key.
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static void checkConstraints(AlgorithmConstraints constraints,
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ECPublicKey publicKey,
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byte[] encodedPoint) throws SSLHandshakeException {
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try {
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ECParameterSpec params = publicKey.getParams();
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ECPoint point =
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JsseJce.decodePoint(encodedPoint, params.getCurve());
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ECPublicKeySpec spec = new ECPublicKeySpec(point, params);
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KeyFactory kf = JsseJce.getKeyFactory("EC");
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ECPublicKey peerPublicKey =
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(ECPublicKey)kf.generatePublic(spec);
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// check constraints of ECPublicKey
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if (!constraints.permits(
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EnumSet.of(CryptoPrimitive.KEY_AGREEMENT),
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peerPublicKey)) {
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throw new SSLHandshakeException(
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"ECPublicKey does not comply to algorithm constraints");
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}
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} catch (GeneralSecurityException | java.io.IOException e) {
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throw (SSLHandshakeException) new SSLHandshakeException(
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"Could not generate ECPublicKey").initCause(e);
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}
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}
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@Override
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public SSLHandshake handshakeType() {
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return SSLHandshake.CLIENT_KEY_EXCHANGE;
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}
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@Override
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public int messageLength() {
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if (encodedPoint == null || encodedPoint.length == 0) {
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return 0;
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} else {
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return 1 + encodedPoint.length;
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}
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}
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@Override
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public void send(HandshakeOutStream hos) throws IOException {
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if (encodedPoint != null && encodedPoint.length != 0) {
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hos.putBytes8(encodedPoint);
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}
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}
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@Override
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public String toString() {
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MessageFormat messageFormat = new MessageFormat(
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"\"ECDH ClientKeyExchange\": '{'\n" +
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" \"ecdh public\": '{'\n" +
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"{0}\n" +
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" '}',\n" +
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"'}'",
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Locale.ENGLISH);
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if (encodedPoint == null || encodedPoint.length == 0) {
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Object[] messageFields = {
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" <implicit>"
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};
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return messageFormat.format(messageFields);
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} else {
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HexDumpEncoder hexEncoder = new HexDumpEncoder();
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Object[] messageFields = {
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Utilities.indent(
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hexEncoder.encodeBuffer(encodedPoint), " "),
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};
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return messageFormat.format(messageFields);
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}
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}
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}
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/**
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* The ECDH "ClientKeyExchange" handshake message producer.
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*/
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private static final
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class ECDHClientKeyExchangeProducer implements HandshakeProducer {
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// Prevent instantiation of this class.
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private ECDHClientKeyExchangeProducer() {
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// blank
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}
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@Override
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public byte[] produce(ConnectionContext context,
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HandshakeMessage message) throws IOException {
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// The producing happens in client side only.
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ClientHandshakeContext chc = (ClientHandshakeContext)context;
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X509Credentials x509Credentials = null;
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for (SSLCredentials credential : chc.handshakeCredentials) {
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if (credential instanceof X509Credentials) {
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x509Credentials = (X509Credentials)credential;
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break;
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}
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}
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if (x509Credentials == null) {
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chc.conContext.fatal(Alert.INTERNAL_ERROR,
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"No server certificate for ECDH client key exchange");
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}
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PublicKey publicKey = x509Credentials.popPublicKey;
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if (!publicKey.getAlgorithm().equals("EC")) {
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chc.conContext.fatal(Alert.ILLEGAL_PARAMETER,
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"Not EC server certificate for ECDH client key exchange");
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}
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ECParameterSpec params = ((ECPublicKey)publicKey).getParams();
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NamedGroup namedGroup = NamedGroup.valueOf(params);
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if (namedGroup == null) {
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chc.conContext.fatal(Alert.ILLEGAL_PARAMETER,
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"Unsupported EC server cert for ECDH client key exchange");
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}
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ECDHEPossession ecdhePossession = new ECDHEPossession(
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namedGroup, chc.sslContext.getSecureRandom());
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chc.handshakePossessions.add(ecdhePossession);
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ECDHClientKeyExchangeMessage cke =
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new ECDHClientKeyExchangeMessage(
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chc, ecdhePossession.publicKey);
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Produced ECDH ClientKeyExchange handshake message", cke);
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}
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// Output the handshake message.
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cke.write(chc.handshakeOutput);
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chc.handshakeOutput.flush();
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// update the states
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SSLKeyExchange ke = SSLKeyExchange.valueOf(
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chc.negotiatedCipherSuite.keyExchange,
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chc.negotiatedProtocol);
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if (ke == null) {
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// unlikely
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chc.conContext.fatal(Alert.INTERNAL_ERROR,
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"Not supported key exchange type");
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} else {
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SSLKeyDerivation masterKD = ke.createKeyDerivation(chc);
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SecretKey masterSecret =
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masterKD.deriveKey("MasterSecret", null);
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chc.handshakeSession.setMasterSecret(masterSecret);
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SSLTrafficKeyDerivation kd =
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SSLTrafficKeyDerivation.valueOf(chc.negotiatedProtocol);
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if (kd == null) {
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// unlikely
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chc.conContext.fatal(Alert.INTERNAL_ERROR,
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"Not supported key derivation: " +
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chc.negotiatedProtocol);
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} else {
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chc.handshakeKeyDerivation =
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kd.createKeyDerivation(chc, masterSecret);
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}
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}
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// The handshake message has been delivered.
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return null;
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}
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}
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/**
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* The ECDH "ClientKeyExchange" handshake message consumer.
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*/
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private static final
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class ECDHClientKeyExchangeConsumer implements SSLConsumer {
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// Prevent instantiation of this class.
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private ECDHClientKeyExchangeConsumer() {
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// blank
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}
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@Override
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public void consume(ConnectionContext context,
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ByteBuffer message) throws IOException {
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// The consuming happens in server side only.
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ServerHandshakeContext shc = (ServerHandshakeContext)context;
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X509Possession x509Possession = null;
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for (SSLPossession possession : shc.handshakePossessions) {
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if (possession instanceof X509Possession) {
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x509Possession = (X509Possession)possession;
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break;
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}
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}
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if (x509Possession == null) {
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// unlikely, have been checked during cipher suite negotiation.
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shc.conContext.fatal(Alert.INTERNAL_ERROR,
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"No expected EC server cert for ECDH client key exchange");
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return; // make the compiler happy
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}
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PrivateKey privateKey = x509Possession.popPrivateKey;
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if (!privateKey.getAlgorithm().equals("EC")) {
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// unlikely, have been checked during cipher suite negotiation.
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shc.conContext.fatal(Alert.ILLEGAL_PARAMETER,
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"Not EC server cert for ECDH client key exchange");
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}
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ECParameterSpec params = ((ECPrivateKey)privateKey).getParams();
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NamedGroup namedGroup = NamedGroup.valueOf(params);
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if (namedGroup == null) {
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// unlikely, have been checked during cipher suite negotiation.
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shc.conContext.fatal(Alert.ILLEGAL_PARAMETER,
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"Unsupported EC server cert for ECDH client key exchange");
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}
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SSLKeyExchange ke = SSLKeyExchange.valueOf(
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shc.negotiatedCipherSuite.keyExchange,
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shc.negotiatedProtocol);
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if (ke == null) {
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// unlikely
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shc.conContext.fatal(Alert.INTERNAL_ERROR,
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"Not supported key exchange type");
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return; // make the compiler happy
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}
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312 |
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// parse the handshake message
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ECDHClientKeyExchangeMessage cke =
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new ECDHClientKeyExchangeMessage(shc, message);
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Consuming ECDH ClientKeyExchange handshake message", cke);
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}
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320 |
|
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// create the credentials
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try {
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ECPoint point =
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JsseJce.decodePoint(cke.encodedPoint, params.getCurve());
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325 |
ECPublicKeySpec spec = new ECPublicKeySpec(point, params);
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326 |
|
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KeyFactory kf = JsseJce.getKeyFactory("EC");
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ECPublicKey peerPublicKey =
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(ECPublicKey)kf.generatePublic(spec);
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330 |
|
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// check constraints of peer ECPublicKey
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332 |
if (!shc.algorithmConstraints.permits(
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333 |
EnumSet.of(CryptoPrimitive.KEY_AGREEMENT),
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334 |
peerPublicKey)) {
|
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335 |
throw new SSLHandshakeException(
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|
336 |
"ECPublicKey does not comply to algorithm constraints");
|
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337 |
}
|
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338 |
|
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339 |
shc.handshakeCredentials.add(new ECDHECredentials(
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340 |
peerPublicKey, namedGroup));
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341 |
} catch (GeneralSecurityException | java.io.IOException e) {
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|
342 |
throw (SSLHandshakeException)(new SSLHandshakeException(
|
|
343 |
"Could not generate ECPublicKey").initCause(e));
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|
344 |
}
|
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345 |
|
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346 |
// update the states
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347 |
SSLKeyDerivation masterKD = ke.createKeyDerivation(shc);
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|
348 |
SecretKey masterSecret =
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349 |
masterKD.deriveKey("MasterSecret", null);
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|
350 |
shc.handshakeSession.setMasterSecret(masterSecret);
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351 |
|
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352 |
SSLTrafficKeyDerivation kd =
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353 |
SSLTrafficKeyDerivation.valueOf(shc.negotiatedProtocol);
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|
354 |
if (kd == null) {
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|
355 |
// unlikely
|
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356 |
shc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
357 |
"Not supported key derivation: " + shc.negotiatedProtocol);
|
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358 |
} else {
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359 |
shc.handshakeKeyDerivation =
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360 |
kd.createKeyDerivation(shc, masterSecret);
|
|
361 |
}
|
|
362 |
}
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2
|
363 |
}
|
|
364 |
|
50768
|
365 |
/**
|
|
366 |
* The ECDHE "ClientKeyExchange" handshake message producer.
|
|
367 |
*/
|
|
368 |
private static final
|
|
369 |
class ECDHEClientKeyExchangeProducer implements HandshakeProducer {
|
|
370 |
// Prevent instantiation of this class.
|
|
371 |
private ECDHEClientKeyExchangeProducer() {
|
|
372 |
// blank
|
|
373 |
}
|
|
374 |
|
|
375 |
@Override
|
|
376 |
public byte[] produce(ConnectionContext context,
|
|
377 |
HandshakeMessage message) throws IOException {
|
|
378 |
// The producing happens in client side only.
|
|
379 |
ClientHandshakeContext chc = (ClientHandshakeContext)context;
|
|
380 |
|
|
381 |
ECDHECredentials ecdheCredentials = null;
|
|
382 |
for (SSLCredentials cd : chc.handshakeCredentials) {
|
|
383 |
if (cd instanceof ECDHECredentials) {
|
|
384 |
ecdheCredentials = (ECDHECredentials)cd;
|
|
385 |
break;
|
|
386 |
}
|
|
387 |
}
|
|
388 |
|
|
389 |
if (ecdheCredentials == null) {
|
|
390 |
chc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
391 |
"No ECDHE credentials negotiated for client key exchange");
|
|
392 |
}
|
|
393 |
|
|
394 |
ECDHEPossession ecdhePossession = new ECDHEPossession(
|
|
395 |
ecdheCredentials, chc.sslContext.getSecureRandom());
|
|
396 |
chc.handshakePossessions.add(ecdhePossession);
|
|
397 |
ECDHClientKeyExchangeMessage cke =
|
|
398 |
new ECDHClientKeyExchangeMessage(
|
|
399 |
chc, ecdhePossession.publicKey);
|
|
400 |
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
401 |
SSLLogger.fine(
|
|
402 |
"Produced ECDHE ClientKeyExchange handshake message", cke);
|
|
403 |
}
|
|
404 |
|
|
405 |
// Output the handshake message.
|
|
406 |
cke.write(chc.handshakeOutput);
|
|
407 |
chc.handshakeOutput.flush();
|
|
408 |
|
|
409 |
// update the states
|
|
410 |
SSLKeyExchange ke = SSLKeyExchange.valueOf(
|
|
411 |
chc.negotiatedCipherSuite.keyExchange,
|
|
412 |
chc.negotiatedProtocol);
|
|
413 |
if (ke == null) {
|
|
414 |
// unlikely
|
|
415 |
chc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
416 |
"Not supported key exchange type");
|
|
417 |
} else {
|
|
418 |
SSLKeyDerivation masterKD = ke.createKeyDerivation(chc);
|
|
419 |
SecretKey masterSecret =
|
|
420 |
masterKD.deriveKey("MasterSecret", null);
|
|
421 |
chc.handshakeSession.setMasterSecret(masterSecret);
|
|
422 |
|
|
423 |
SSLTrafficKeyDerivation kd =
|
|
424 |
SSLTrafficKeyDerivation.valueOf(chc.negotiatedProtocol);
|
|
425 |
if (kd == null) {
|
|
426 |
// unlikely
|
|
427 |
chc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
428 |
"Not supported key derivation: " +
|
|
429 |
chc.negotiatedProtocol);
|
|
430 |
} else {
|
|
431 |
chc.handshakeKeyDerivation =
|
|
432 |
kd.createKeyDerivation(chc, masterSecret);
|
|
433 |
}
|
|
434 |
}
|
|
435 |
|
|
436 |
// The handshake message has been delivered.
|
|
437 |
return null;
|
|
438 |
}
|
2
|
439 |
}
|
|
440 |
|
50768
|
441 |
/**
|
|
442 |
* The ECDHE "ClientKeyExchange" handshake message consumer.
|
|
443 |
*/
|
|
444 |
private static final
|
|
445 |
class ECDHEClientKeyExchangeConsumer implements SSLConsumer {
|
|
446 |
// Prevent instantiation of this class.
|
|
447 |
private ECDHEClientKeyExchangeConsumer() {
|
|
448 |
// blank
|
|
449 |
}
|
|
450 |
|
|
451 |
@Override
|
|
452 |
public void consume(ConnectionContext context,
|
|
453 |
ByteBuffer message) throws IOException {
|
|
454 |
// The consuming happens in server side only.
|
|
455 |
ServerHandshakeContext shc = (ServerHandshakeContext)context;
|
|
456 |
|
|
457 |
ECDHEPossession ecdhePossession = null;
|
|
458 |
for (SSLPossession possession : shc.handshakePossessions) {
|
|
459 |
if (possession instanceof ECDHEPossession) {
|
|
460 |
ecdhePossession = (ECDHEPossession)possession;
|
|
461 |
break;
|
|
462 |
}
|
|
463 |
}
|
|
464 |
if (ecdhePossession == null) {
|
|
465 |
// unlikely
|
|
466 |
shc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
467 |
"No expected ECDHE possessions for client key exchange");
|
|
468 |
return; // make the compiler happy
|
|
469 |
}
|
|
470 |
|
|
471 |
ECParameterSpec params = ecdhePossession.publicKey.getParams();
|
|
472 |
NamedGroup namedGroup = NamedGroup.valueOf(params);
|
|
473 |
if (namedGroup == null) {
|
|
474 |
// unlikely, have been checked during cipher suite negotiation.
|
|
475 |
shc.conContext.fatal(Alert.ILLEGAL_PARAMETER,
|
|
476 |
"Unsupported EC server cert for ECDHE client key exchange");
|
|
477 |
}
|
|
478 |
|
|
479 |
SSLKeyExchange ke = SSLKeyExchange.valueOf(
|
|
480 |
shc.negotiatedCipherSuite.keyExchange,
|
|
481 |
shc.negotiatedProtocol);
|
|
482 |
if (ke == null) {
|
|
483 |
// unlikely
|
|
484 |
shc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
485 |
"Not supported key exchange type");
|
|
486 |
return; // make the compiler happy
|
|
487 |
}
|
2
|
488 |
|
50768
|
489 |
// parse the handshake message
|
|
490 |
ECDHClientKeyExchangeMessage cke =
|
|
491 |
new ECDHClientKeyExchangeMessage(shc, message);
|
|
492 |
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
493 |
SSLLogger.fine(
|
|
494 |
"Consuming ECDHE ClientKeyExchange handshake message", cke);
|
|
495 |
}
|
|
496 |
|
|
497 |
// create the credentials
|
|
498 |
try {
|
|
499 |
ECPoint point =
|
|
500 |
JsseJce.decodePoint(cke.encodedPoint, params.getCurve());
|
|
501 |
ECPublicKeySpec spec = new ECPublicKeySpec(point, params);
|
|
502 |
|
|
503 |
KeyFactory kf = JsseJce.getKeyFactory("EC");
|
|
504 |
ECPublicKey peerPublicKey =
|
|
505 |
(ECPublicKey)kf.generatePublic(spec);
|
2
|
506 |
|
50768
|
507 |
// check constraints of peer ECPublicKey
|
|
508 |
if (!shc.algorithmConstraints.permits(
|
|
509 |
EnumSet.of(CryptoPrimitive.KEY_AGREEMENT),
|
|
510 |
peerPublicKey)) {
|
|
511 |
throw new SSLHandshakeException(
|
|
512 |
"ECPublicKey does not comply to algorithm constraints");
|
|
513 |
}
|
|
514 |
|
|
515 |
shc.handshakeCredentials.add(new ECDHECredentials(
|
|
516 |
peerPublicKey, namedGroup));
|
|
517 |
} catch (GeneralSecurityException | java.io.IOException e) {
|
|
518 |
throw (SSLHandshakeException)(new SSLHandshakeException(
|
|
519 |
"Could not generate ECPublicKey").initCause(e));
|
|
520 |
}
|
|
521 |
|
|
522 |
// update the states
|
|
523 |
SSLKeyDerivation masterKD = ke.createKeyDerivation(shc);
|
|
524 |
SecretKey masterSecret =
|
|
525 |
masterKD.deriveKey("MasterSecret", null);
|
|
526 |
shc.handshakeSession.setMasterSecret(masterSecret);
|
|
527 |
|
|
528 |
SSLTrafficKeyDerivation kd =
|
|
529 |
SSLTrafficKeyDerivation.valueOf(shc.negotiatedProtocol);
|
|
530 |
if (kd == null) {
|
|
531 |
// unlikely
|
|
532 |
shc.conContext.fatal(Alert.INTERNAL_ERROR,
|
|
533 |
"Not supported key derivation: " + shc.negotiatedProtocol);
|
|
534 |
} else {
|
|
535 |
shc.handshakeKeyDerivation =
|
|
536 |
kd.createKeyDerivation(shc, masterSecret);
|
|
537 |
}
|
2
|
538 |
}
|
|
539 |
}
|
|
540 |
}
|