blob: 3dc70599a55e43feb0275957a5f287d74d974946 (
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
79
80
|
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed 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 org.bouncycastle.crypto.digests;
import org.bouncycastle.crypto.Digest;
/**
* Level of indirection to let us select OpenSSLDigest implementations
* for libcore but fallback to BouncyCastle ones on the RI.
*/
public final class AndroidDigestFactory {
private static final String OpenSSLFactoryClassName
= AndroidDigestFactory.class.getName() + "OpenSSL";
private static final String BouncyCastleFactoryClassName
= AndroidDigestFactory.class.getName() + "BouncyCastle";
private static final AndroidDigestFactoryInterface FACTORY;
static {
Class factoryImplementationClass;
try {
factoryImplementationClass = Class.forName(OpenSSLFactoryClassName);
// Double check for NativeCrypto in case we are running on RI for testing
Class.forName("org.apache.harmony.xnet.provider.jsse.NativeCrypto");
} catch (ClassNotFoundException e1) {
try {
factoryImplementationClass = Class.forName(BouncyCastleFactoryClassName);
} catch (ClassNotFoundException e2) {
throw new AssertionError("Failed to load AndroidDigestFactoryInterface "
+ "implementation. Looked for "
+ OpenSSLFactoryClassName + " and "
+ BouncyCastleFactoryClassName);
}
}
if (!AndroidDigestFactoryInterface.class.isAssignableFrom(factoryImplementationClass)) {
throw new AssertionError(factoryImplementationClass
+ "does not implement AndroidDigestFactoryInterface");
}
try {
FACTORY = (AndroidDigestFactoryInterface) factoryImplementationClass.newInstance();
} catch (InstantiationException e) {
throw new AssertionError(e);
} catch (IllegalAccessException e) {
throw new AssertionError(e);
}
}
public static Digest getMD5() {
return FACTORY.getMD5();
}
public static Digest getSHA1() {
return FACTORY.getSHA1();
}
public static Digest getSHA256() {
return FACTORY.getSHA256();
}
public static Digest getSHA384() {
return FACTORY.getSHA384();
}
public static Digest getSHA512() {
return FACTORY.getSHA512();
}
}
|