Java tutorial
/** * 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.hadoop.hdfs.security.token.block; import org.apache.hadoop.classification.InterfaceAudience; /** * A little struct class to contain all fields required to perform encryption of * the DataTransferProtocol. */ @InterfaceAudience.Private public class DataEncryptionKey { public final int keyId; public final String blockPoolId; public final byte[] nonce; public final byte[] encryptionKey; public final long expiryDate; public final String encryptionAlgorithm; public DataEncryptionKey(int keyId, String blockPoolId, byte[] nonce, byte[] encryptionKey, long expiryDate, String encryptionAlgorithm) { this.keyId = keyId; this.blockPoolId = blockPoolId; this.nonce = nonce; this.encryptionKey = encryptionKey; this.expiryDate = expiryDate; this.encryptionAlgorithm = encryptionAlgorithm; } @Override public String toString() { return keyId + "/" + blockPoolId + "/" + nonce.length + "/" + encryptionKey.length; } }