blob: 5d7764ed8185f04c5822cccadcdbf8739e51dabb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/*
* 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 javax.crypto;
import java.security.InvalidKeyException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
/**
* The <i>Service Provider Interface</i> (<b>SPI</b>) definition for the {@code
* SecretKeyFactory} class.
*/
public abstract class SecretKeyFactorySpi {
/**
* Creates a new {@code SecretKeyFactorySpi} instance.
*/
public SecretKeyFactorySpi() {
}
/**
* Generate a secret key from the specified key specification.
*
* @param keySpec
* the key specification.
* @return a secret key.
* @throws InvalidKeySpecException
* if the specified key specification cannot be used to generate
* a secret key.
*/
protected abstract SecretKey engineGenerateSecret(KeySpec keySpec)
throws InvalidKeySpecException;
/**
* Returns the key specification of the specified secret key.
*
* @param key
* the secret key to get the specification from.
* @param keySpec
* the target key specification class.
* @return an instance of the specified key specification class.
* @throws InvalidKeySpecException
* if the specified secret key cannot be transformed into the
* requested key specification.
*/
@SuppressWarnings("unchecked")
protected abstract KeySpec engineGetKeySpec(SecretKey key, Class keySpec)
throws InvalidKeySpecException;
/**
* Translates the specified secret key into an instance of the corresponding
* key from the provider of this key factory.
*
* @param key
* the secret key to translate.
* @return the corresponding translated key.
* @throws InvalidKeyException
* if the specified key cannot be translated using this key
* factory.
*/
protected abstract SecretKey engineTranslateKey(SecretKey key)
throws InvalidKeyException;
}
|
