blob: 72294e8ce7ebb5013d53b6968d1df471bcbb2912 (
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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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.thialfihar.android.apg.helper;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Vector;
import org.spongycastle.openpgp.PGPObjectFactory;
import org.spongycastle.openpgp.PGPPublicKeyRing;
import org.spongycastle.openpgp.PGPSecretKey;
import org.spongycastle.openpgp.PGPSecretKeyRing;
import org.thialfihar.android.apg.Constants;
import org.thialfihar.android.apg.util.Log;
public class PGPConversionHelper {
/**
* Converts Vector<PGPSecretKey> to a byte[]
*
* @param keys
* @return
*/
public static byte[] PGPSecretKeyListToBytes(Vector<PGPSecretKey> keys) {
ByteArrayOutputStream os = new ByteArrayOutputStream();
for (PGPSecretKey key : keys) {
try {
key.encode(os);
} catch (IOException e) {
Log.e(Constants.TAG,
"Error while converting PGPSecretKey to byte[]: " + e.getMessage());
e.printStackTrace();
}
}
byte[] keysBytes = os.toByteArray();
return keysBytes;
}
/**
* Convert from byte[] to PGPSecretKeyRing
*
* @param keysBytes
* @return
*/
public static PGPSecretKeyRing BytesToPGPSecretKeyRing(byte[] keysBytes) {
PGPObjectFactory factory = new PGPObjectFactory(keysBytes);
PGPSecretKeyRing keyRing = null;
try {
if ((keyRing = (PGPSecretKeyRing) factory.nextObject()) == null) {
Log.e(Constants.TAG, "No keys given!");
}
} catch (IOException e) {
e.printStackTrace();
}
return keyRing;
}
/**
* Convert from byte[] to PGPPublicKeyRing
*
* @param keysBytes
* @return
*/
public static PGPPublicKeyRing BytesToPGPPublicKeyRing(byte[] keysBytes) {
PGPObjectFactory factory = new PGPObjectFactory(keysBytes);
PGPPublicKeyRing keyRing = null;
try {
if ((keyRing = (PGPPublicKeyRing) factory.nextObject()) == null) {
Log.e(Constants.TAG, "No keys given!");
}
} catch (IOException e) {
e.printStackTrace();
}
return keyRing;
}
/**
* Convert from byte[] to ArrayList<PGPSecretKey>
*
* @param keysBytes
* @return
*/
public static ArrayList<PGPSecretKey> BytesToPGPSecretKeyList(byte[] keysBytes) {
PGPSecretKeyRing keyRing = BytesToPGPSecretKeyRing(keysBytes);
ArrayList<PGPSecretKey> keys = new ArrayList<PGPSecretKey>();
@SuppressWarnings("unchecked")
Iterator<PGPSecretKey> itr = keyRing.getSecretKeys();
while (itr.hasNext()) {
keys.add(itr.next());
}
return keys;
}
/**
* Convert from byte[] to PGPSecretKey
*
* @param keysBytes
* @return
*/
public static PGPSecretKey BytesToPGPSecretKey(byte[] keyBytes) {
PGPSecretKey key = BytesToPGPSecretKeyList(keyBytes).get(0);
return key;
}
/**
* Convert from PGPSecretKey to byte[]
*
* @param keysBytes
* @return
*/
public static byte[] PGPSecretKeyToBytes(PGPSecretKey key) {
try {
return key.getEncoded();
} catch (IOException e) {
Log.e(Constants.TAG, "Encoding failed: ", e);
return null;
}
}
/**
* Convert from PGPSecretKeyRing to byte[]
*
* @param keysBytes
* @return
*/
public static byte[] PGPSecretKeyRingToBytes(PGPSecretKeyRing keyRing) {
try {
return keyRing.getEncoded();
} catch (IOException e) {
Log.e(Constants.TAG, "Encoding failed: ", e);
return null;
}
}
}
|
