author | valeriep |
Tue, 08 May 2012 17:57:48 -0700 | |
changeset 12685 | 8a448b5b9006 |
parent 10336 | 0bb1999251f8 |
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) 2002, 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 java.io.*; |
|
29 |
import sun.security.util.*; |
|
30 |
import sun.misc.HexDumpEncoder; |
|
31 |
import java.security.spec.AlgorithmParameterSpec; |
|
32 |
import java.security.spec.InvalidParameterSpecException; |
|
33 |
import javax.crypto.spec.IvParameterSpec; |
|
34 |
||
35 |
/** |
|
36 |
* This class implements the parameter (IV) used with Block Ciphers |
|
37 |
* in feedback-mode. IV is defined in the standards as follows: |
|
38 |
* |
|
39 |
* <pre> |
|
40 |
* IV ::= OCTET STRING -- length depends on the block size of the |
|
41 |
* block ciphers |
|
42 |
* </pre> |
|
43 |
* |
|
44 |
* @author Valerie Peng |
|
45 |
* |
|
46 |
*/ |
|
47 |
final class BlockCipherParamsCore { |
|
48 |
private int block_size = 0; |
|
49 |
private byte[] iv = null; |
|
50 |
||
51 |
BlockCipherParamsCore(int blksize) { |
|
52 |
block_size = blksize; |
|
53 |
} |
|
54 |
||
55 |
void init(AlgorithmParameterSpec paramSpec) |
|
56 |
throws InvalidParameterSpecException { |
|
57 |
if (!(paramSpec instanceof IvParameterSpec)) { |
|
58 |
throw new InvalidParameterSpecException |
|
59 |
("Inappropriate parameter specification"); |
|
60 |
} |
|
61 |
byte[] tmpIv = ((IvParameterSpec)paramSpec).getIV(); |
|
62 |
if (tmpIv.length != block_size) { |
|
63 |
throw new InvalidParameterSpecException("IV not " + |
|
64 |
block_size + " bytes long"); |
|
65 |
} |
|
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
5506
diff
changeset
|
66 |
iv = tmpIv.clone(); |
2 | 67 |
} |
68 |
||
69 |
void init(byte[] encoded) throws IOException { |
|
70 |
DerInputStream der = new DerInputStream(encoded); |
|
71 |
||
72 |
byte[] tmpIv = der.getOctetString(); |
|
73 |
if (der.available() != 0) { |
|
74 |
throw new IOException("IV parsing error: extra data"); |
|
75 |
} |
|
76 |
if (tmpIv.length != block_size) { |
|
77 |
throw new IOException("IV not " + block_size + |
|
78 |
" bytes long"); |
|
79 |
} |
|
80 |
iv = tmpIv; |
|
81 |
} |
|
82 |
||
83 |
void init(byte[] encoded, String decodingMethod) |
|
84 |
throws IOException { |
|
85 |
if ((decodingMethod != null) && |
|
86 |
(!decodingMethod.equalsIgnoreCase("ASN.1"))) { |
|
87 |
throw new IllegalArgumentException("Only support ASN.1 format"); |
|
88 |
} |
|
89 |
init(encoded); |
|
90 |
} |
|
91 |
||
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
5506
diff
changeset
|
92 |
<T extends AlgorithmParameterSpec> T getParameterSpec(Class<T> paramSpec) |
2 | 93 |
throws InvalidParameterSpecException |
94 |
{ |
|
95 |
if (IvParameterSpec.class.isAssignableFrom(paramSpec)) { |
|
10336
0bb1999251f8
7064075: Security libraries don't build with javac -Xlint:all,-deprecation -Werror
jjg
parents:
5506
diff
changeset
|
96 |
return paramSpec.cast(new IvParameterSpec(this.iv)); |
2 | 97 |
} else { |
98 |
throw new InvalidParameterSpecException |
|
99 |
("Inappropriate parameter specification"); |
|
100 |
} |
|
101 |
} |
|
102 |
||
103 |
byte[] getEncoded() throws IOException { |
|
104 |
DerOutputStream out = new DerOutputStream(); |
|
105 |
out.putOctetString(this.iv); |
|
106 |
return out.toByteArray(); |
|
107 |
} |
|
108 |
||
109 |
byte[] getEncoded(String encodingMethod) |
|
110 |
throws IOException { |
|
111 |
return getEncoded(); |
|
112 |
} |
|
113 |
||
114 |
/* |
|
115 |
* Returns a formatted string describing the parameters. |
|
116 |
*/ |
|
117 |
public String toString() { |
|
118 |
String LINE_SEP = System.getProperty("line.separator"); |
|
119 |
||
120 |
String ivString = LINE_SEP + " iv:" + LINE_SEP + "["; |
|
121 |
HexDumpEncoder encoder = new HexDumpEncoder(); |
|
122 |
ivString += encoder.encodeBuffer(this.iv); |
|
123 |
ivString += "]" + LINE_SEP; |
|
124 |
return ivString; |
|
125 |
} |
|
126 |
} |