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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
|
/*
* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Crypto.h"
#include <QMutex>
#include <gcrypt.h>
#include "config-keepassx.h"
#include "crypto/CryptoHash.h"
#include "crypto/SymmetricCipher.h"
bool Crypto::m_initalized(false);
QString Crypto::m_errorStr;
QString Crypto::m_backendVersion;
Crypto::Crypto()
{
}
bool Crypto::init()
{
if (m_initalized) {
qWarning("Crypto::init: already initalized");
return true;
}
m_backendVersion = QString::fromLocal8Bit(gcry_check_version(0));
gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
if (!checkAlgorithms()) {
return false;
}
// has to be set before testing Crypto classes
m_initalized = true;
if (!selfTest()) {
m_initalized = false;
return false;
}
return true;
}
bool Crypto::initalized()
{
return m_initalized;
}
QString Crypto::errorString()
{
return m_errorStr;
}
QString Crypto::backendVersion()
{
return QString("libgcrypt ").append(m_backendVersion);
}
bool Crypto::backendSelfTest()
{
return (gcry_control(GCRYCTL_SELFTEST) == 0);
}
bool Crypto::checkAlgorithms()
{
if (gcry_cipher_algo_info(GCRY_CIPHER_AES256, GCRYCTL_TEST_ALGO, nullptr, nullptr) != 0) {
m_errorStr = "GCRY_CIPHER_AES256 not found.";
qWarning("Crypto::checkAlgorithms: %s", qPrintable(m_errorStr));
return false;
}
if (gcry_cipher_algo_info(GCRY_CIPHER_TWOFISH, GCRYCTL_TEST_ALGO, nullptr, nullptr) != 0) {
m_errorStr = "GCRY_CIPHER_TWOFISH not found.";
qWarning("Crypto::checkAlgorithms: %s", qPrintable(m_errorStr));
return false;
}
if (gcry_cipher_algo_info(GCRY_CIPHER_SALSA20, GCRYCTL_TEST_ALGO, nullptr, nullptr) != 0) {
m_errorStr = "GCRY_CIPHER_SALSA20 not found.";
qWarning("Crypto::checkAlgorithms: %s", qPrintable(m_errorStr));
return false;
}
if (gcry_md_test_algo(GCRY_MD_SHA256) != 0) {
m_errorStr = "GCRY_MD_SHA256 not found.";
qWarning("Crypto::checkAlgorithms: %s", qPrintable(m_errorStr));
return false;
}
return true;
}
bool Crypto::selfTest()
{
return testSha256() && testAes256Cbc() && testAes256Ecb() && testTwofish() && testSalsa20();
}
void Crypto::raiseError(const QString& str)
{
m_errorStr = str;
qWarning("Crypto::selfTest: %s", qPrintable(m_errorStr));
}
bool Crypto::testSha256()
{
QByteArray sha256Test = CryptoHash::hash("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
CryptoHash::Sha256);
if (sha256Test != QByteArray::fromHex("248D6A61D20638B8E5C026930C3E6039A33CE45964FF2167F6ECEDD419DB06C1")) {
raiseError("SHA-256 mismatch.");
return false;
}
return true;
}
bool Crypto::testAes256Cbc()
{
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
QByteArray cipherText = QByteArray::fromHex("f58c4c04d6e5f1ba779eabfb5f7bfbd6");
cipherText.append(QByteArray::fromHex("9cfc4e967edb808d679f777bc6702c7d"));
bool ok;
SymmetricCipher aes256Encrypt(SymmetricCipher::Aes256, SymmetricCipher::Cbc, SymmetricCipher::Encrypt);
if (!aes256Encrypt.init(key, iv)) {
raiseError(aes256Encrypt.errorString());
return false;
}
QByteArray encryptedText = aes256Encrypt.process(plainText, &ok);
if (!ok) {
raiseError(aes256Encrypt.errorString());
return false;
}
if (encryptedText != cipherText) {
raiseError("AES-256 CBC encryption mismatch.");
return false;
}
SymmetricCipher aes256Descrypt(SymmetricCipher::Aes256, SymmetricCipher::Cbc, SymmetricCipher::Decrypt);
if (!aes256Descrypt.init(key, iv)) {
raiseError(aes256Descrypt.errorString());
return false;
}
QByteArray decryptedText = aes256Descrypt.process(cipherText, &ok);
if (!ok) {
raiseError(aes256Descrypt.errorString());
return false;
}
if (decryptedText != plainText) {
raiseError("AES-256 CBC decryption mismatch.");
return false;
}
return true;
}
bool Crypto::testAes256Ecb()
{
QByteArray key = QByteArray::fromHex("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F");
QByteArray iv = QByteArray::fromHex("00000000000000000000000000000000");
QByteArray plainText = QByteArray::fromHex("00112233445566778899AABBCCDDEEFF");
plainText.append(QByteArray::fromHex("00112233445566778899AABBCCDDEEFF"));
QByteArray cipherText = QByteArray::fromHex("8EA2B7CA516745BFEAFC49904B496089");
cipherText.append(QByteArray::fromHex("8EA2B7CA516745BFEAFC49904B496089"));
bool ok;
SymmetricCipher aes256Encrypt(SymmetricCipher::Aes256, SymmetricCipher::Ecb, SymmetricCipher::Encrypt);
if (!aes256Encrypt.init(key, iv)) {
raiseError(aes256Encrypt.errorString());
return false;
}
QByteArray encryptedText = aes256Encrypt.process(plainText, &ok);
if (!ok) {
raiseError(aes256Encrypt.errorString());
return false;
}
if (encryptedText != cipherText) {
raiseError("AES-256 ECB encryption mismatch.");
return false;
}
SymmetricCipher aes256Descrypt(SymmetricCipher::Aes256, SymmetricCipher::Ecb, SymmetricCipher::Decrypt);
if (!aes256Descrypt.init(key, iv)) {
raiseError(aes256Descrypt.errorString());
return false;
}
QByteArray decryptedText = aes256Descrypt.process(cipherText, &ok);
if (!ok) {
raiseError(aes256Descrypt.errorString());
return false;
}
if (decryptedText != plainText) {
raiseError("AES-256 ECB decryption mismatch.");
return false;
}
return true;
}
bool Crypto::testTwofish()
{
QByteArray key = QByteArray::fromHex("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4");
QByteArray iv = QByteArray::fromHex("000102030405060708090a0b0c0d0e0f");
QByteArray plainText = QByteArray::fromHex("6bc1bee22e409f96e93d7e117393172a");
plainText.append(QByteArray::fromHex("ae2d8a571e03ac9c9eb76fac45af8e51"));
QByteArray cipherText = QByteArray::fromHex("e0227c3cc80f3cb1b2ed847cc6f57d3c");
cipherText.append(QByteArray::fromHex("657b1e7960b30fb7c8d62e72ae37c3a0"));
bool ok;
SymmetricCipher twofishEncrypt(SymmetricCipher::Twofish, SymmetricCipher::Cbc, SymmetricCipher::Encrypt);
if (!twofishEncrypt.init(key, iv)) {
raiseError(twofishEncrypt.errorString());
return false;
}
QByteArray encryptedText = twofishEncrypt.process(plainText, &ok);
if (!ok) {
raiseError(twofishEncrypt.errorString());
return false;
}
if (encryptedText != cipherText) {
raiseError("Twofish encryption mismatch.");
return false;
}
SymmetricCipher twofishDecrypt(SymmetricCipher::Twofish, SymmetricCipher::Cbc, SymmetricCipher::Decrypt);
if (!twofishDecrypt.init(key, iv)) {
raiseError(twofishEncrypt.errorString());
return false;
}
QByteArray decryptedText = twofishDecrypt.process(cipherText, &ok);
if (!ok) {
raiseError(twofishDecrypt.errorString());
return false;
}
if (decryptedText != plainText) {
raiseError("Twofish encryption mismatch.");
return false;
}
return true;
}
bool Crypto::testSalsa20()
{
QByteArray salsa20Key = QByteArray::fromHex("F3F4F5F6F7F8F9FAFBFCFDFEFF000102030405060708090A0B0C0D0E0F101112");
QByteArray salsa20iv = QByteArray::fromHex("0000000000000000");
QByteArray salsa20Plain = QByteArray::fromHex("00000000000000000000000000000000");
QByteArray salsa20Cipher = QByteArray::fromHex("B4C0AFA503BE7FC29A62058166D56F8F");
bool ok;
SymmetricCipher salsa20Stream(SymmetricCipher::Salsa20, SymmetricCipher::Stream,
SymmetricCipher::Encrypt);
if (!salsa20Stream.init(salsa20Key, salsa20iv)) {
raiseError(salsa20Stream.errorString());
return false;
}
QByteArray salsaProcessed = salsa20Stream.process(salsa20Plain, &ok);
if (!ok) {
raiseError(salsa20Stream.errorString());
return false;
}
if (salsaProcessed != salsa20Cipher) {
raiseError("Salsa20 stream cipher mismatch.");
return false;
}
return true;
}
|
