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/**
 * Copyright 2010-2014 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.kuali.common.util.encrypt.provider;

import static org.kuali.common.util.base.Precondition.checkNotBlank;

public final class EnvironmentVariableEncryptionContextProvider extends AbstractEncryptionContextProvider {

	public EnvironmentVariableEncryptionContextProvider(String passwordKey, String strengthKey) {
		super(passwordKey, strengthKey);
	}

	@Override
	protected String getValueFromSource(String key) {
		return System.getenv(checkNotBlank(key, "key"));
	}

}