1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.commons.crypto.utils;
19
20 import javax.crypto.spec.SecretKeySpec;
21
22 /**
23 * Creates AES objects
24 *
25 * @since 1.2.0
26 */
27 public class AES {
28
29 /** The AES algorithm name. */
30 public static final String ALGORITHM = "AES";
31
32 /**
33 * Defines {@value}.
34 */
35 public static final String CBC_NO_PADDING = "AES/CBC/NoPadding";
36
37 /**
38 * Defines {@value}.
39 */
40 public static final String CBC_PKCS5_PADDING = "AES/CBC/PKCS5Padding";
41
42 /**
43 * Defines {@value}.
44 */
45 public static final String CTR_NO_PADDING = "AES/CTR/NoPadding";
46
47 /**
48 * Creates a new SecretKeySpec for the given key and {@link #ALGORITHM}.
49 *
50 * @param key a key.
51 * @return a new SecretKeySpec.
52 */
53 public static SecretKeySpec newSecretKeySpec(final byte[] key) {
54 return new SecretKeySpec(key, ALGORITHM);
55 }
56
57 }