Showing the changes to java/pkg/sun/security/pkcs11/KeyCache.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2003, 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.pkcs11; | |
| 27 | + | |
| 28 | +import java.util.*; | |
| 29 | +import java.lang.ref.*; | |
| 30 | + | |
| 31 | +import java.security.Key; | |
| 32 | + | |
| 33 | +import sun.security.util.Cache; | |
| 34 | + | |
| 35 | +/** | |
| 36 | + * Key to P11Key translation cache. The PKCS#11 token can only perform | |
| 37 | + * operations on keys stored on the token (permanently or temporarily). That | |
| 38 | + * means that in order to allow the PKCS#11 provider to use keys from other | |
| 39 | + * providers, we need to transparently convert them to P11Keys. The engines | |
| 40 | + * do that using (Secret)KeyFactories, which in turn use this class as a | |
| 41 | + * cache. | |
| 42 | + * | |
| 43 | + * There are two KeyCache instances per provider, one for secret keys and | |
| 44 | + * one for public and private keys. | |
| 45 | + * | |
| 46 | + * @author Andreas Sterbenz | |
| 47 | + * @since 1.5 | |
| 48 | + */ | |
| 49 | +final class KeyCache { | |
| 50 | + | |
| 51 | + private final Cache strongCache; | |
| 52 | + | |
| 53 | + private WeakReference<Map<Key,P11Key>> cacheReference; | |
| 54 | + | |
| 55 | + KeyCache() { | |
| 56 | + strongCache = Cache.newHardMemoryCache(16); | |
| 57 | + } | |
| 58 | + | |
| 59 | + private static final class IdentityWrapper { | |
| 60 | + final Object obj; | |
| 61 | + IdentityWrapper(Object obj) { | |
| 62 | + this.obj = obj; | |
| 63 | + } | |
| 64 | + public boolean equals(Object o) { | |
| 65 | + if (this == o) { | |
| 66 | + return true; | |
| 67 | + } | |
| 68 | + if (o instanceof IdentityWrapper == false) { | |
| 69 | + return false; | |
| 70 | + } | |
| 71 | + IdentityWrapper other = (IdentityWrapper)o; | |
| 72 | + return this.obj == other.obj; | |
| 73 | + } | |
| 74 | + public int hashCode() { | |
| 75 | + return System.identityHashCode(obj); | |
| 76 | + } | |
| 77 | + } | |
| 78 | + | |
| 79 | + synchronized P11Key get(Key key) { | |
| 80 | + P11Key p11Key = (P11Key)strongCache.get(new IdentityWrapper(key)); | |
| 81 | + if (p11Key != null) { | |
| 82 | + return p11Key; | |
| 83 | + } | |
| 84 | + Map<Key,P11Key> map = | |
| 85 | + (cacheReference == null) ? null : cacheReference.get(); | |
| 86 | + if (map == null) { | |
| 87 | + return null; | |
| 88 | + } | |
| 89 | + return map.get(key); | |
| 90 | + } | |
| 91 | + | |
| 92 | + synchronized void put(Key key, P11Key p11Key) { | |
| 93 | + strongCache.put(new IdentityWrapper(key), p11Key); | |
| 94 | + Map<Key,P11Key> map = | |
| 95 | + (cacheReference == null) ? null : cacheReference.get(); | |
| 96 | + if (map == null) { | |
| 97 | + map = new IdentityHashMap<Key,P11Key>(); | |
| 98 | + cacheReference = new WeakReference<Map<Key,P11Key>>(map); | |
| 99 | + } | |
| 100 | + map.put(key, p11Key); | |
| 101 | + } | |
| 102 | + | |
| 103 | +} | |