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/*
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* Copyright (c) 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.security.PrivateKey;
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import java.security.PublicKey;
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import java.security.cert.X509Certificate;
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import java.security.interfaces.ECPublicKey;
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import java.security.spec.ECParameterSpec;
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import java.util.AbstractMap.SimpleImmutableEntry;
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import java.util.Map;
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import javax.net.ssl.SSLEngine;
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import javax.net.ssl.SSLSocket;
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import javax.net.ssl.X509ExtendedKeyManager;
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import sun.security.ssl.SupportedGroupsExtension.NamedGroup;
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import sun.security.ssl.SupportedGroupsExtension.SupportedGroups;
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enum X509Authentication implements SSLAuthentication {
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// Require rsaEncryption public key
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RSA ("RSA", new X509PossessionGenerator(
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new String[]{"RSA"})),
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// Require RSASSA-PSS public key
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RSASSA_PSS ("RSASSA-PSS", new X509PossessionGenerator(
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new String[] {"RSASSA-PSS"})),
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// Require rsaEncryption or RSASSA-PSS public key
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//
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// Note that this is a specifical scheme for TLS 1.2. (EC)DHE_RSA cipher
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// suites of TLS 1.2 can use either rsaEncryption or RSASSA-PSS public
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// key for authentication and handshake.
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RSA_OR_PSS ("RSA_OR_PSS", new X509PossessionGenerator(
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new String[] {"RSA", "RSASSA-PSS"})),
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// Require DSA public key
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DSA ("DSA", new X509PossessionGenerator(
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new String[] {"DSA"})),
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// Require EC public key
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EC ("EC", new X509PossessionGenerator(
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new String[] {"EC"}));
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final String keyType;
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final SSLPossessionGenerator possessionGenerator;
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X509Authentication(String keyType,
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SSLPossessionGenerator possessionGenerator) {
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this.keyType = keyType;
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this.possessionGenerator = possessionGenerator;
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}
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static X509Authentication valueOf(SignatureScheme signatureScheme) {
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for (X509Authentication au: X509Authentication.values()) {
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if (au.keyType.equals(signatureScheme.keyAlgorithm)) {
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return au;
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}
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}
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return null;
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}
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@Override
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public SSLPossession createPossession(HandshakeContext handshakeContext) {
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return possessionGenerator.createPossession(handshakeContext);
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}
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@Override
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public SSLHandshake[] getRelatedHandshakers(
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HandshakeContext handshakeContext) {
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if (!handshakeContext.negotiatedProtocol.useTLS13PlusSpec()) {
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return new SSLHandshake[] {
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SSLHandshake.CERTIFICATE,
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SSLHandshake.CERTIFICATE_REQUEST
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};
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} // Otherwise, TLS 1.3 does not use this method.
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return new SSLHandshake[0];
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}
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@SuppressWarnings({"unchecked", "rawtypes"})
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@Override
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public Map.Entry<Byte, HandshakeProducer>[] getHandshakeProducers(
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HandshakeContext handshakeContext) {
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if (!handshakeContext.negotiatedProtocol.useTLS13PlusSpec()) {
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return (Map.Entry<Byte, HandshakeProducer>[])(new Map.Entry[] {
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new SimpleImmutableEntry<Byte, HandshakeProducer>(
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SSLHandshake.CERTIFICATE.id,
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SSLHandshake.CERTIFICATE
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)
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});
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} // Otherwise, TLS 1.3 does not use this method.
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return (Map.Entry<Byte, HandshakeProducer>[])(new Map.Entry[0]);
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}
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static final class X509Possession implements SSLPossession {
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// Proof of possession of the private key corresponding to the public
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// key for which a certificate is being provided for authentication.
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final X509Certificate[] popCerts;
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final PrivateKey popPrivateKey;
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X509Possession(PrivateKey popPrivateKey,
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X509Certificate[] popCerts) {
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this.popCerts = popCerts;
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this.popPrivateKey = popPrivateKey;
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}
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}
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static final class X509Credentials implements SSLCredentials {
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final X509Certificate[] popCerts;
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final PublicKey popPublicKey;
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X509Credentials(PublicKey popPublicKey, X509Certificate[] popCerts) {
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this.popCerts = popCerts;
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this.popPublicKey = popPublicKey;
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}
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}
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private static final
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class X509PossessionGenerator implements SSLPossessionGenerator {
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private final String[] keyTypes;
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private X509PossessionGenerator(String[] keyTypes) {
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this.keyTypes = keyTypes;
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}
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@Override
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public SSLPossession createPossession(HandshakeContext context) {
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if (context.sslConfig.isClientMode) {
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for (String keyType : keyTypes) {
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SSLPossession poss = createClientPossession(
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(ClientHandshakeContext)context, keyType);
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if (poss != null) {
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return poss;
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}
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}
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} else {
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for (String keyType : keyTypes) {
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SSLPossession poss = createServerPossession(
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(ServerHandshakeContext)context, keyType);
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if (poss != null) {
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return poss;
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}
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}
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}
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return null;
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}
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// Used by TLS 1.3 only.
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private SSLPossession createClientPossession(
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ClientHandshakeContext chc, String keyType) {
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X509ExtendedKeyManager km = chc.sslContext.getX509KeyManager();
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String clientAlias = null;
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if (chc.conContext.transport instanceof SSLSocketImpl) {
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clientAlias = km.chooseClientAlias(
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new String[] { keyType },
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null, (SSLSocket)chc.conContext.transport);
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} else if (chc.conContext.transport instanceof SSLEngineImpl) {
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clientAlias = km.chooseEngineClientAlias(
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new String[] { keyType },
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null, (SSLEngine)chc.conContext.transport);
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}
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if (clientAlias == null) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.finest("No X.509 cert selected for " + keyType);
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}
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return null;
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}
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PrivateKey clientPrivateKey = km.getPrivateKey(clientAlias);
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if (clientPrivateKey == null) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.finest(
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clientAlias + " is not a private key entry");
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}
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return null;
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}
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X509Certificate[] clientCerts = km.getCertificateChain(clientAlias);
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if ((clientCerts == null) || (clientCerts.length == 0)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.finest(clientAlias +
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" is a private key entry with no cert chain stored");
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}
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return null;
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}
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PublicKey clientPublicKey = clientCerts[0].getPublicKey();
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if ((!clientPrivateKey.getAlgorithm().equals(keyType))
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|| (!clientPublicKey.getAlgorithm().equals(keyType))) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.fine(
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clientAlias + " private or public key is not of " +
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keyType + " algorithm");
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}
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return null;
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}
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return new X509Possession(clientPrivateKey, clientCerts);
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}
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private SSLPossession createServerPossession(
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ServerHandshakeContext shc, String keyType) {
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X509ExtendedKeyManager km = shc.sslContext.getX509KeyManager();
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String serverAlias = null;
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if (shc.conContext.transport instanceof SSLSocketImpl) {
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serverAlias = km.chooseServerAlias(keyType,
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null, (SSLSocket)shc.conContext.transport);
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} else if (shc.conContext.transport instanceof SSLEngineImpl) {
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serverAlias = km.chooseEngineServerAlias(keyType,
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null, (SSLEngine)shc.conContext.transport);
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}
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if (serverAlias == null) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.finest("No X.509 cert selected for " + keyType);
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}
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return null;
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}
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PrivateKey serverPrivateKey = km.getPrivateKey(serverAlias);
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if (serverPrivateKey == null) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.finest(
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serverAlias + " is not a private key entry");
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}
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return null;
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}
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X509Certificate[] serverCerts = km.getCertificateChain(serverAlias);
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if ((serverCerts == null) || (serverCerts.length == 0)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.finest(
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serverAlias + " is not a certificate entry");
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}
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return null;
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}
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PublicKey serverPublicKey = serverCerts[0].getPublicKey();
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if ((!serverPrivateKey.getAlgorithm().equals(keyType))
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|| (!serverPublicKey.getAlgorithm().equals(keyType))) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.fine(
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serverAlias + " private or public key is not of " +
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keyType + " algorithm");
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}
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return null;
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}
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// For ECC certs, check whether we support the EC domain
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// parameters. If the client sent a SupportedEllipticCurves
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// ClientHello extension, check against that too.
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if (keyType.equals("EC")) {
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if (!(serverPublicKey instanceof ECPublicKey)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.warning(serverAlias +
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" public key is not an instance of ECPublicKey");
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}
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return null;
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}
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// For ECC certs, check whether we support the EC domain
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// parameters. If the client sent a SupportedEllipticCurves
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// ClientHello extension, check against that too.
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ECParameterSpec params =
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((ECPublicKey)serverPublicKey).getParams();
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NamedGroup namedGroup = NamedGroup.valueOf(params);
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if ((namedGroup == null) ||
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(!SupportedGroups.isSupported(namedGroup)) ||
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((shc.clientRequestedNamedGroups != null) &&
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!shc.clientRequestedNamedGroups.contains(namedGroup))) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
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SSLLogger.warning(
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"Unsupported named group (" + namedGroup +
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") used in the " + serverAlias + " certificate");
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}
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return null;
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}
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}
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return new X509Possession(serverPrivateKey, serverCerts);
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}
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}
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}
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