/* * Copyright (c) 2003, 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.pkcs11;import java.util.*;import java.lang.ref.*;import java.security.Key;import sun.security.util.Cache;/** * Key to P11Key translation cache. The PKCS#11 token can only perform * operations on keys stored on the token (permanently or temporarily). That * means that in order to allow the PKCS#11 provider to use keys from other * providers, we need to transparently convert them to P11Keys. The engines * do that using (Secret)KeyFactories, which in turn use this class as a * cache. * * There are two KeyCache instances per provider, one for secret keys and * one for public and private keys. * * @author Andreas Sterbenz * @since 1.5 */final class KeyCache { private final Cache strongCache; private WeakReference<Map<Key,P11Key>> cacheReference; KeyCache() { strongCache = Cache.newHardMemoryCache(16); } private static final class IdentityWrapper { final Object obj; IdentityWrapper(Object obj) { this.obj = obj; } public boolean equals(Object o) { if (this == o) { return true; } if (o instanceof IdentityWrapper == false) { return false; } IdentityWrapper other = (IdentityWrapper)o; return this.obj == other.obj; } public int hashCode() { return System.identityHashCode(obj); } } synchronized P11Key get(Key key) { P11Key p11Key = (P11Key)strongCache.get(new IdentityWrapper(key)); if (p11Key != null) { return p11Key; } Map<Key,P11Key> map = (cacheReference == null) ? null : cacheReference.get(); if (map == null) { return null; } return map.get(key); } synchronized void put(Key key, P11Key p11Key) { strongCache.put(new IdentityWrapper(key), p11Key); Map<Key,P11Key> map = (cacheReference == null) ? null : cacheReference.get(); if (map == null) { map = new IdentityHashMap<Key,P11Key>(); cacheReference = new WeakReference<Map<Key,P11Key>>(map); } map.put(key, p11Key); }}
/*
* Copyright (c) 2003, 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.pkcs11;
import java.util.*;
import java.lang.ref.*;
import java.security.Key;
import sun.security.util.Cache;
/**
* Key to P11Key translation cache. The PKCS#11 token can only perform
* operations on keys stored on the token (permanently or temporarily). That
* means that in order to allow the PKCS#11 provider to use keys from other
* providers, we need to transparently convert them to P11Keys. The engines
* do that using (Secret)KeyFactories, which in turn use this class as a
* cache.
*
* There are two KeyCache instances per provider, one for secret keys and
* one for public and private keys.
*
* @author Andreas Sterbenz
* @since 1.5
*/
final class KeyCache {
private final Cache strongCache;
private WeakReference<Map<Key,P11Key>> cacheReference;
KeyCache() {
strongCache = Cache.newHardMemoryCache(16);
}
private static final class IdentityWrapper {
final Object obj;
IdentityWrapper(Object obj) {
this.obj = obj;
}
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o instanceof IdentityWrapper == false) {
return false;
}
IdentityWrapper other = (IdentityWrapper)o;
return this.obj == other.obj;
}
public int hashCode() {
return System.identityHashCode(obj);
}
}
synchronized P11Key get(Key key) {
P11Key p11Key = (P11Key)strongCache.get(new IdentityWrapper(key));
if (p11Key != null) {
return p11Key;
}
Map<Key,P11Key> map =
(cacheReference == null) ? null : cacheReference.get();
if (map == null) {
return null;
}
return map.get(key);
}
synchronized void put(Key key, P11Key p11Key) {
strongCache.put(new IdentityWrapper(key), p11Key);
Map<Key,P11Key> map =
(cacheReference == null) ? null : cacheReference.get();
if (map == null) {
map = new IdentityHashMap<Key,P11Key>();
cacheReference = new WeakReference<Map<Key,P11Key>>(map);
}
map.put(key, p11Key);
}
}