author | wetmore |
Tue, 12 Mar 2013 15:31:49 -0700 | |
changeset 16067 | 36055e4b5305 |
parent 10336 | 0bb1999251f8 |
child 18810 | 76a7cd9041d5 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
5506
diff
changeset
|
2 |
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
|
5 |
* This code is free software; you can redistribute it and/or modify it |
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
|
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 10 |
* |
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
2 | 24 |
*/ |
25 |
||
26 |
package com.sun.crypto.provider; |
|
27 |
||
28 |
import javax.crypto.SecretKey; |
|
29 |
import javax.crypto.SecretKeyFactorySpi; |
|
30 |
import javax.crypto.spec.DESedeKeySpec; |
|
31 |
import java.security.InvalidKeyException; |
|
32 |
import java.security.spec.KeySpec; |
|
33 |
import java.security.spec.InvalidKeySpecException; |
|
34 |
||
35 |
/** |
|
36 |
* This class implements the DES-EDE key factory of the Sun provider. |
|
37 |
* |
|
38 |
* @author Jan Luehe |
|
39 |
* |
|
40 |
*/ |
|
41 |
||
42 |
public final class DESedeKeyFactory extends SecretKeyFactorySpi { |
|
43 |
||
44 |
/** |
|
3353
ddbd63234844
6647452: Remove obfuscation, framework and provider self-verification checking
wetmore
parents:
2
diff
changeset
|
45 |
* Empty constructor |
2 | 46 |
*/ |
47 |
public DESedeKeyFactory() { |
|
48 |
} |
|
49 |
||
50 |
/** |
|
51 |
* Generates a <code>SecretKey</code> object from the provided key |
|
52 |
* specification (key material). |
|
53 |
* |
|
54 |
* @param keySpec the specification (key material) of the secret key |
|
55 |
* |
|
56 |
* @return the secret key |
|
57 |
* |
|
58 |
* @exception InvalidKeySpecException if the given key specification |
|
59 |
* is inappropriate for this key factory to produce a public key. |
|
60 |
*/ |
|
61 |
protected SecretKey engineGenerateSecret(KeySpec keySpec) |
|
62 |
throws InvalidKeySpecException { |
|
63 |
DESedeKey desEdeKey = null; |
|
64 |
||
65 |
try { |
|
66 |
if (keySpec instanceof DESedeKeySpec) { |
|
67 |
DESedeKeySpec desEdeKeySpec = (DESedeKeySpec)keySpec; |
|
68 |
desEdeKey = new DESedeKey(desEdeKeySpec.getKey()); |
|
69 |
||
70 |
} else { |
|
71 |
throw new InvalidKeySpecException |
|
72 |
("Inappropriate key specification"); |
|
73 |
} |
|
74 |
} catch (InvalidKeyException e) { |
|
75 |
} |
|
76 |
return desEdeKey; |
|
77 |
} |
|
78 |
||
79 |
/** |
|
80 |
* Returns a specification (key material) of the given key |
|
81 |
* in the requested format. |
|
82 |
* |
|
83 |
* @param key the key |
|
84 |
* |
|
85 |
* @param keySpec the requested format in which the key material shall be |
|
86 |
* returned |
|
87 |
* |
|
88 |
* @return the underlying key specification (key material) in the |
|
89 |
* requested format |
|
90 |
* |
|
91 |
* @exception InvalidKeySpecException if the requested key specification is |
|
92 |
* inappropriate for the given key, or the given key cannot be processed |
|
93 |
* (e.g., the given key has an unrecognized algorithm or format). |
|
94 |
*/ |
|
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
5506
diff
changeset
|
95 |
protected KeySpec engineGetKeySpec(SecretKey key, Class<?> keySpec) |
2 | 96 |
throws InvalidKeySpecException { |
97 |
||
98 |
try { |
|
99 |
if ((key instanceof SecretKey) |
|
100 |
&& (key.getAlgorithm().equalsIgnoreCase("DESede")) |
|
101 |
&& (key.getFormat().equalsIgnoreCase("RAW"))) { |
|
102 |
||
103 |
// Check if requested key spec is amongst the valid ones |
|
104 |
if (DESedeKeySpec.class.isAssignableFrom(keySpec)) { |
|
105 |
return new DESedeKeySpec(key.getEncoded()); |
|
106 |
||
107 |
} else { |
|
108 |
throw new InvalidKeySpecException |
|
109 |
("Inappropriate key specification"); |
|
110 |
} |
|
111 |
||
112 |
} else { |
|
113 |
throw new InvalidKeySpecException |
|
114 |
("Inappropriate key format/algorithm"); |
|
115 |
} |
|
116 |
} catch (InvalidKeyException e) { |
|
117 |
throw new InvalidKeySpecException("Secret key has wrong size"); |
|
118 |
} |
|
119 |
} |
|
120 |
||
121 |
/** |
|
122 |
* Translates a <code>SecretKey</code> object, whose provider may be |
|
123 |
* unknown or potentially untrusted, into a corresponding |
|
124 |
* <code>SecretKey</code> object of this key factory. |
|
125 |
* |
|
126 |
* @param key the key whose provider is unknown or untrusted |
|
127 |
* |
|
128 |
* @return the translated key |
|
129 |
* |
|
130 |
* @exception InvalidKeyException if the given key cannot be processed by |
|
131 |
* this key factory. |
|
132 |
*/ |
|
133 |
protected SecretKey engineTranslateKey(SecretKey key) |
|
134 |
throws InvalidKeyException { |
|
135 |
||
136 |
try { |
|
137 |
||
138 |
if ((key != null) |
|
139 |
&& (key.getAlgorithm().equalsIgnoreCase("DESede")) |
|
140 |
&& (key.getFormat().equalsIgnoreCase("RAW"))) { |
|
141 |
// Check if key originates from this factory |
|
142 |
if (key instanceof com.sun.crypto.provider.DESedeKey) { |
|
143 |
return key; |
|
144 |
} |
|
145 |
// Convert key to spec |
|
146 |
DESedeKeySpec desEdeKeySpec |
|
147 |
= (DESedeKeySpec)engineGetKeySpec(key, |
|
148 |
DESedeKeySpec.class); |
|
149 |
// Create key from spec, and return it |
|
150 |
return engineGenerateSecret(desEdeKeySpec); |
|
151 |
||
152 |
} else { |
|
153 |
throw new InvalidKeyException |
|
154 |
("Inappropriate key format/algorithm"); |
|
155 |
} |
|
156 |
||
157 |
} catch (InvalidKeySpecException e) { |
|
158 |
throw new InvalidKeyException("Cannot translate key"); |
|
159 |
} |
|
160 |
} |
|
161 |
} |