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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
*
* 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 org.apache.qpid.server.security.encryption;
import java.nio.charset.StandardCharsets;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.HashSet;
import java.util.Random;
import java.util.Set;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.qpid.test.utils.QpidTestCase;
public class AESKeyFileEncrypterTest extends QpidTestCase
{
private final SecureRandom _random = new SecureRandom();
public static final String PLAINTEXT = "notaverygoodpassword";
public void testSimpleEncryptDecrypt() throws Exception
{
if(isStrongEncryptionEnabled())
{
doTestSimpleEncryptDecrypt(PLAINTEXT);
}
}
public void testRepeatedEncryptionsReturnDifferentValues() throws Exception
{
if(isStrongEncryptionEnabled())
{
SecretKeySpec secretKey = createSecretKey();
AESKeyFileEncrypter encrypter = new AESKeyFileEncrypter(secretKey);
Set<String> encryptions = new HashSet<>();
int iterations = 100;
for (int i = 0; i < iterations; i++)
{
encryptions.add(encrypter.encrypt(PLAINTEXT));
}
assertEquals("Not all encryptions were distinct", iterations, encryptions.size());
for (String encrypted : encryptions)
{
assertEquals("Not all encryptions decrypt correctly", PLAINTEXT, encrypter.decrypt(encrypted));
}
}
}
public void testCreationFailsOnInvalidSecret() throws Exception
{
if(isStrongEncryptionEnabled())
{
try
{
new AESKeyFileEncrypter(null);
fail("An encrypter should not be creatable from a null key");
}
catch (NullPointerException e)
{
// pass
}
try
{
PBEKeySpec keySpec = new PBEKeySpec("password".toCharArray());
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
new AESKeyFileEncrypter(factory.generateSecret(keySpec));
fail("An encrypter should not be creatable from the wrong type of secret key");
}
catch (IllegalArgumentException e)
{
// pass
}
}
}
public void testEncryptionOfEmptyString() throws Exception
{
if(isStrongEncryptionEnabled())
{
String text = "";
doTestSimpleEncryptDecrypt(text);
}
}
private void doTestSimpleEncryptDecrypt(final String text)
{
SecretKeySpec secretKey = createSecretKey();
AESKeyFileEncrypter encrypter = new AESKeyFileEncrypter(secretKey);
String encrypted = encrypter.encrypt(text);
assertNotNull("Encrypter did not return a result from encryption", encrypted);
assertFalse("Plain text and encrypted version are equal", text.equals(encrypted));
String decrypted = encrypter.decrypt(encrypted);
assertNotNull("Encrypter did not return a result from decryption",decrypted);
assertTrue("Encryption was not reversible", text.equals(decrypted));
}
public void testEncryptingNullFails() throws Exception
{
if(isStrongEncryptionEnabled())
{
try
{
SecretKeySpec secretKey = createSecretKey();
AESKeyFileEncrypter encrypter = new AESKeyFileEncrypter(secretKey);
String encrypted = encrypter.encrypt(null);
fail("Attempting to encrypt null should fail");
}
catch (NullPointerException e)
{
// pass
}
}
}
public void testEncryptingVeryLargeSecret() throws Exception
{
if(isStrongEncryptionEnabled())
{
Random random = new Random();
byte[] data = new byte[4096];
random.nextBytes(data);
for (int i = 0; i < data.length; i++)
{
data[i] = (byte) (data[i] & 0xEF);
}
doTestSimpleEncryptDecrypt(new String(data, StandardCharsets.US_ASCII));
}
}
private boolean isStrongEncryptionEnabled() throws NoSuchAlgorithmException
{
return Cipher.getMaxAllowedKeyLength("AES")>=256;
}
public void testDecryptNonsense() throws Exception
{
if(isStrongEncryptionEnabled())
{
SecretKeySpec secretKey = createSecretKey();
AESKeyFileEncrypter encrypter = new AESKeyFileEncrypter(secretKey);
try
{
encrypter.decrypt(null);
fail("Should not decrypt a null value");
}
catch (NullPointerException e)
{
// pass
}
try
{
encrypter.decrypt("");
fail("Should not decrypt the empty String");
}
catch (IllegalArgumentException e)
{
// pass
}
try
{
encrypter.decrypt("thisisnonsense");
fail("Should not decrypt a small amount of nonsense");
}
catch (IllegalArgumentException e)
{
// pass
}
try
{
String answer = encrypter.decrypt("thisisn'tvalidBase64!soitshouldfailwithanIllegalArgumentException");
fail("Should not decrypt a larger amount of nonsense");
}
catch (IllegalArgumentException e)
{
// pass
}
}
}
private SecretKeySpec createSecretKey()
{
final byte[] keyData = new byte[32];
_random.nextBytes(keyData);
return new SecretKeySpec(keyData, "AES");
}
}
|
