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 | } | ||