/*
 * 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.nifi.processors.aws.s3.encryption;

import java.util.Base64;
import java.util.Random;

final class S3EncryptionTestUtil {

    private static Random RANDOM = new Random();

    private S3EncryptionTestUtil() {
    }

    static String createKey(int keySize) {
        if (keySize % 8 != 0) {
            throw new IllegalArgumentException("Invalid test data");
        }

        byte[] keyMaterial = new byte[keySize / 8];
        RANDOM.nextBytes(keyMaterial);
        return new String(Base64.getEncoder().encode(keyMaterial));
    }
}
