hunt.shiro.crypto.AbstractSymmetricCipherService source code

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,
13  * software distributed under the License is distributed on an
14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15  * KIND, either express or implied.  See the License for the
16  * specific language governing permissions and limitations
17  * under the License.
18  */
19 module hunt.shiro.crypto.AbstractSymmetricCipherService;
20 
21 import hunt.shiro.crypto.JcaCipherService;
22 
23 // import javax.crypto.KeyGenerator;
24 import hunt.security.Key;
25 // import java.security.NoSuchAlgorithmException;
26 import hunt.Exceptions;
27 
28 /**
29  * Base abstract class for supporting symmetric key cipher algorithms.
30  *
31  * @since 1.0
32  */
33 abstract class AbstractSymmetricCipherService : JcaCipherService {
34 
35     protected this(string algorithmName) {
36         super(algorithmName);
37     }
38 
39     /**
40      * Generates a new {@link java.security.Key Key} suitable for this CipherService's {@link #getAlgorithmName() algorithm}
41      * by calling {@link #generateNewKey(int) generateNewKey(128)} (uses a 128 bit size by default).
42      *
43      * @return a new {@link java.security.Key Key}, 128 bits in length.
44      */
45     Key generateNewKey() {
46         return generateNewKey(getKeySize());
47     }
48 
49     /**
50      * Generates a new {@link Key Key} of the specified size suitable for this CipherService
51      * (based on the {@link #getAlgorithmName() algorithmName} using the JDK {@link javax.crypto.KeyGenerator KeyGenerator}.
52      *
53      * @param keyBitSize the bit size of the key to create
54      * @return the created key suitable for use with this CipherService
55      */
56     Key generateNewKey(int keyBitSize) {
57         // KeyGenerator kg;
58         // try {
59         //     kg = KeyGenerator.getInstance(getAlgorithmName());
60         // } catch (NoSuchAlgorithmException e) {
61         //     string msg = "Unable to acquire " ~ getAlgorithmName() ~ " algorithm.  This is required to function.";
62         //     throw new IllegalStateException(msg, e);
63         // }
64         // kg.init(keyBitSize);
65         // return kg.generateKey();
66         implementationMissing(false);
67         return null;
68     }
69 
70 }