1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.conscrypt; 18 19 import java.security.InvalidKeyException; 20 import java.security.NoSuchAlgorithmException; 21 import java.security.PrivateKey; 22 import javax.crypto.SecretKey; 23 24 public class OpenSSLEngine { 25 static { NativeCrypto.ENGINE_load_dynamic()26 NativeCrypto.ENGINE_load_dynamic(); 27 } 28 29 private static final Object mLoadingLock = new Object(); 30 31 /** The ENGINE's native handle. */ 32 private final long ctx; 33 getInstance(String engine)34 public static OpenSSLEngine getInstance(String engine) throws IllegalArgumentException { 35 if (engine == null) { 36 throw new NullPointerException("engine == null"); 37 } 38 39 final long engineCtx; 40 synchronized (mLoadingLock) { 41 engineCtx = NativeCrypto.ENGINE_by_id(engine); 42 if (engineCtx == 0) { 43 throw new IllegalArgumentException("Unknown ENGINE id: " + engine); 44 } 45 46 NativeCrypto.ENGINE_add(engineCtx); 47 } 48 49 return new OpenSSLEngine(engineCtx); 50 } 51 OpenSSLEngine(long engineCtx)52 private OpenSSLEngine(long engineCtx) { 53 ctx = engineCtx; 54 55 if (NativeCrypto.ENGINE_init(engineCtx) == 0) { 56 NativeCrypto.ENGINE_free(engineCtx); 57 throw new IllegalArgumentException("Could not initialize engine"); 58 } 59 } 60 getPrivateKeyById(String id)61 public PrivateKey getPrivateKeyById(String id) throws InvalidKeyException { 62 if (id == null) { 63 throw new NullPointerException("id == null"); 64 } 65 66 final long keyRef = NativeCrypto.ENGINE_load_private_key(ctx, id); 67 if (keyRef == 0) { 68 return null; 69 } 70 71 OpenSSLKey pkey = new OpenSSLKey(keyRef, this, id); 72 try { 73 return pkey.getPrivateKey(); 74 } catch (NoSuchAlgorithmException e) { 75 throw new InvalidKeyException(e); 76 } 77 } 78 getSecretKeyById(String id, String algorithm)79 public SecretKey getSecretKeyById(String id, String algorithm) throws InvalidKeyException { 80 if (id == null) { 81 throw new NullPointerException("id == null"); 82 } 83 84 final long keyRef = NativeCrypto.ENGINE_load_private_key(ctx, id); 85 if (keyRef == 0) { 86 return null; 87 } 88 89 OpenSSLKey pkey = new OpenSSLKey(keyRef, this, id); 90 try { 91 return pkey.getSecretKey(algorithm); 92 } catch (NoSuchAlgorithmException e) { 93 throw new InvalidKeyException(e); 94 } 95 } 96 getEngineContext()97 long getEngineContext() { 98 return ctx; 99 } 100 101 @Override finalize()102 protected void finalize() throws Throwable { 103 try { 104 NativeCrypto.ENGINE_finish(ctx); 105 NativeCrypto.ENGINE_free(ctx); 106 } finally { 107 super.finalize(); 108 } 109 } 110 111 @Override equals(Object o)112 public boolean equals(Object o) { 113 if (o == this) { 114 return true; 115 } 116 117 if (!(o instanceof OpenSSLEngine)) { 118 return false; 119 } 120 121 OpenSSLEngine other = (OpenSSLEngine) o; 122 123 if (other.getEngineContext() == ctx) { 124 return true; 125 } 126 127 final String id = NativeCrypto.ENGINE_get_id(ctx); 128 if (id == null) { 129 return false; 130 } 131 132 return id.equals(NativeCrypto.ENGINE_get_id(other.getEngineContext())); 133 } 134 135 @Override hashCode()136 public int hashCode() { 137 return (int) ctx; 138 } 139 } 140