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/*
* 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.spark.network.util;
import java.util.Map;
import java.util.Properties;
/**
* Utility methods related to the commons-crypto library.
*/
public class CryptoUtils {
// The prefix for the configurations passing to Apache Commons Crypto library.
public static final String COMMONS_CRYPTO_CONFIG_PREFIX = "commons.crypto.";
/**
* Extract the commons-crypto configuration embedded in a list of config values.
*
* @param prefix Prefix in the given configuration that identifies the commons-crypto configs.
* @param conf List of configuration values.
*/
public static Properties toCryptoConf(String prefix, Iterable> conf) {
Properties props = new Properties();
for (Map.Entry e : conf) {
String key = e.getKey();
if (key.startsWith(prefix)) {
props.setProperty(COMMONS_CRYPTO_CONFIG_PREFIX + key.substring(prefix.length()),
e.getValue());
}
}
return props;
}
}