001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.commons.crypto.utils;
019
020import javax.crypto.spec.SecretKeySpec;
021
022/**
023 * Creates AES objects
024 *
025 * @since 1.2.0
026 */
027public class AES {
028
029    /** The AES algorithm name. */
030    public static final String ALGORITHM = "AES";
031
032    /**
033     * Defines {@value}.
034     */
035    public static final String CBC_NO_PADDING = "AES/CBC/NoPadding";
036
037    /**
038     * Defines {@value}.
039     */
040    public static final String CBC_PKCS5_PADDING = "AES/CBC/PKCS5Padding";
041
042    /**
043     * Defines {@value}.
044     */
045    public static final String CTR_NO_PADDING = "AES/CTR/NoPadding";
046
047    /**
048     * Creates a new SecretKeySpec for the given key and {@link #ALGORITHM}.
049     *
050     * @param key a key.
051     * @return a new SecretKeySpec.
052     */
053    public static SecretKeySpec newSecretKeySpec(final byte[] key) {
054        return new SecretKeySpec(key, ALGORITHM);
055    }
056
057}