| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cassandra.security; |
| |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.security.Key; |
| import java.security.KeyStore; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.config.TransparentDataEncryptionOptions; |
| |
| /** |
| * A {@code KeyProvider} that retrieves keys from a java keystore. |
| */ |
| public class JKSKeyProvider implements KeyProvider |
| { |
| private static final Logger logger = LoggerFactory.getLogger(JKSKeyProvider.class); |
| static final String PROP_KEYSTORE = "keystore"; |
| static final String PROP_KEYSTORE_PW = "keystore_password"; |
| static final String PROP_KEYSTORE_TYPE = "store_type"; |
| static final String PROP_KEY_PW = "key_password"; |
| |
| private final KeyStore store; |
| private final boolean isJceks; |
| private final TransparentDataEncryptionOptions options; |
| |
| public JKSKeyProvider(TransparentDataEncryptionOptions options) |
| { |
| this.options = options; |
| logger.info("initializing keystore from file {}", options.get(PROP_KEYSTORE)); |
| try (FileInputStream inputStream = new FileInputStream(options.get(PROP_KEYSTORE))) |
| { |
| store = KeyStore.getInstance(options.get(PROP_KEYSTORE_TYPE)); |
| store.load(inputStream, options.get(PROP_KEYSTORE_PW).toCharArray()); |
| isJceks = store.getType().equalsIgnoreCase("jceks"); |
| } |
| catch (Exception e) |
| { |
| throw new RuntimeException("couldn't load keystore", e); |
| } |
| } |
| |
| public Key getSecretKey(String keyAlias) throws IOException |
| { |
| // there's a lovely behavior with jceks files that all aliases are lower-cased |
| if (isJceks) |
| keyAlias = keyAlias.toLowerCase(); |
| |
| Key key; |
| try |
| { |
| String password = options.get(PROP_KEY_PW); |
| if (password == null || password.isEmpty()) |
| password = options.get(PROP_KEYSTORE_PW); |
| key = store.getKey(keyAlias, password.toCharArray()); |
| } |
| catch (Exception e) |
| { |
| throw new IOException("unable to load key from keystore"); |
| } |
| if (key == null) |
| throw new IOException(String.format("key %s was not found in keystore", keyAlias)); |
| return key; |
| } |
| } |