0N/A/*
2362N/A * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.security.pkcs11;
0N/A
0N/Aimport java.util.*;
0N/Aimport java.lang.ref.*;
0N/A
0N/Aimport java.security.Key;
0N/A
0N/Aimport sun.security.util.Cache;
0N/A
0N/A/**
0N/A * Key to P11Key translation cache. The PKCS#11 token can only perform
0N/A * operations on keys stored on the token (permanently or temporarily). That
0N/A * means that in order to allow the PKCS#11 provider to use keys from other
0N/A * providers, we need to transparently convert them to P11Keys. The engines
0N/A * do that using (Secret)KeyFactories, which in turn use this class as a
0N/A * cache.
0N/A *
0N/A * There are two KeyCache instances per provider, one for secret keys and
0N/A * one for public and private keys.
0N/A *
0N/A * @author Andreas Sterbenz
0N/A * @since 1.5
0N/A */
0N/Afinal class KeyCache {
0N/A
0N/A private final Cache strongCache;
0N/A
0N/A private WeakReference<Map<Key,P11Key>> cacheReference;
0N/A
0N/A KeyCache() {
0N/A strongCache = Cache.newHardMemoryCache(16);
0N/A }
0N/A
0N/A private static final class IdentityWrapper {
0N/A final Object obj;
0N/A IdentityWrapper(Object obj) {
0N/A this.obj = obj;
0N/A }
0N/A public boolean equals(Object o) {
0N/A if (this == o) {
0N/A return true;
0N/A }
0N/A if (o instanceof IdentityWrapper == false) {
0N/A return false;
0N/A }
0N/A IdentityWrapper other = (IdentityWrapper)o;
0N/A return this.obj == other.obj;
0N/A }
0N/A public int hashCode() {
0N/A return System.identityHashCode(obj);
0N/A }
0N/A }
0N/A
0N/A synchronized P11Key get(Key key) {
0N/A P11Key p11Key = (P11Key)strongCache.get(new IdentityWrapper(key));
0N/A if (p11Key != null) {
0N/A return p11Key;
0N/A }
0N/A Map<Key,P11Key> map =
0N/A (cacheReference == null) ? null : cacheReference.get();
0N/A if (map == null) {
0N/A return null;
0N/A }
0N/A return map.get(key);
0N/A }
0N/A
0N/A synchronized void put(Key key, P11Key p11Key) {
0N/A strongCache.put(new IdentityWrapper(key), p11Key);
0N/A Map<Key,P11Key> map =
0N/A (cacheReference == null) ? null : cacheReference.get();
0N/A if (map == null) {
0N/A map = new IdentityHashMap<Key,P11Key>();
0N/A cacheReference = new WeakReference<Map<Key,P11Key>>(map);
0N/A }
0N/A map.put(key, p11Key);
0N/A }
0N/A
0N/A}